diff options
Diffstat (limited to 'core/lib/libtomcrypt/src/pk')
119 files changed, 14666 insertions, 0 deletions
diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_bit_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_bit_string.c new file mode 100644 index 0000000..9d16d90 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_bit_string.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a BIT STRING + @param in The DER encoded BIT STRING + @param inlen The size of the DER BIT STRING + @param out [out] The array of bits stored (one per char) + @param outlen [in/out] The number of bits stored + @return CRYPT_OK if successful +*/ +int der_decode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long dlen, blen, x, y; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* packet must be at least 4 bytes */ + if (inlen < 4) { + return CRYPT_INVALID_ARG; + } + + /* check for 0x03 */ + if ((in[0]&0x1F) != 0x03) { + return CRYPT_INVALID_PACKET; + } + + /* offset in the data */ + x = 1; + + /* get the length of the data */ + if (in[x] & 0x80) { + /* long format get number of length bytes */ + y = in[x++] & 0x7F; + + /* invalid if 0 or > 2 */ + if (y == 0 || y > 2) { + return CRYPT_INVALID_PACKET; + } + + /* read the data len */ + dlen = 0; + while (y--) { + dlen = (dlen << 8) | (unsigned long)in[x++]; + } + } else { + /* short format */ + dlen = in[x++] & 0x7F; + } + + /* is the data len too long or too short? */ + if ((dlen == 0) || (dlen + x > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* get padding count */ + blen = ((dlen - 1) << 3) - (in[x++] & 7); + + /* too many bits? */ + if (blen > *outlen) { + *outlen = blen; + return CRYPT_BUFFER_OVERFLOW; + } + + /* decode/store the bits */ + for (y = 0; y < blen; y++) { + out[y] = (in[x] & (1 << (7 - (y & 7)))) ? 1 : 0; + if ((y & 7) == 7) { + ++x; + } + } + + /* we done */ + *outlen = blen; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_decode_bit_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_raw_bit_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_raw_bit_string.c new file mode 100644 index 0000000..a857933 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_decode_raw_bit_string.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +#define SETBIT(v, n) (v=((unsigned char)(v) | (1U << (unsigned char)(n)))) + +/** + Store a BIT STRING + @param in The DER encoded BIT STRING + @param inlen The size of the DER BIT STRING + @param out [out] The array of bits stored (8 per char) + @param outlen [in/out] The number of bits stored + @return CRYPT_OK if successful +*/ +int der_decode_raw_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long dlen, blen, x, y; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* packet must be at least 4 bytes */ + if (inlen < 4) { + return CRYPT_INVALID_ARG; + } + + /* check for 0x03 */ + if ((in[0]&0x1F) != 0x03) { + return CRYPT_INVALID_PACKET; + } + + /* offset in the data */ + x = 1; + + /* get the length of the data */ + if (in[x] & 0x80) { + /* long format get number of length bytes */ + y = in[x++] & 0x7F; + + /* invalid if 0 or > 2 */ + if (y == 0 || y > 2) { + return CRYPT_INVALID_PACKET; + } + + /* read the data len */ + dlen = 0; + while (y--) { + dlen = (dlen << 8) | (unsigned long)in[x++]; + } + } else { + /* short format */ + dlen = in[x++] & 0x7F; + } + + /* is the data len too long or too short? */ + if ((dlen == 0) || (dlen + x > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* get padding count */ + blen = ((dlen - 1) << 3) - (in[x++] & 7); + + /* too many bits? */ + if (blen > *outlen) { + *outlen = blen; + return CRYPT_BUFFER_OVERFLOW; + } + + /* decode/store the bits */ + for (y = 0; y < blen; y++) { + if (in[x] & (1 << (7 - (y & 7)))) { + SETBIT(out[y/8], 7-(y%8)); + } + if ((y & 7) == 7) { + ++x; + } + } + + /* we done */ + *outlen = blen; + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_bit_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_bit_string.c new file mode 100644 index 0000000..1776fc0 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_bit_string.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a BIT STRING + @param in The array of bits to store (one per char) + @param inlen The number of bits tostore + @param out [out] The destination for the DER encoded BIT STRING + @param outlen [in/out] The max size and resulting size of the DER BIT STRING + @return CRYPT_OK if successful +*/ +int der_encode_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long len, x, y; + unsigned char buf; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* avoid overflows */ + if ((err = der_length_bit_string(inlen, &len)) != CRYPT_OK) { + return err; + } + + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* store header (include bit padding count in length) */ + x = 0; + y = (inlen >> 3) + ((inlen&7) ? 1 : 0) + 1; + + out[x++] = 0x03; + if (y < 128) { + out[x++] = (unsigned char)y; + } else if (y < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)y; + } else if (y < 65536) { + out[x++] = 0x82; + out[x++] = (unsigned char)((y>>8)&255); + out[x++] = (unsigned char)(y&255); + } + + /* store number of zero padding bits */ + out[x++] = (unsigned char)((8 - inlen) & 7); + + /* store the bits in big endian format */ + for (y = buf = 0; y < inlen; y++) { + buf |= (in[y] ? 1 : 0) << (7 - (y & 7)); + if ((y & 7) == 7) { + out[x++] = buf; + buf = 0; + } + } + /* store last byte */ + if (inlen & 7) { + out[x++] = buf; + } + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_encode_bit_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_raw_bit_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_raw_bit_string.c new file mode 100644 index 0000000..8035e44 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_encode_raw_bit_string.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_bit_string.c + ASN.1 DER, encode a BIT STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +#define getbit(n, k) (((n) & ( 1 << (k) )) >> (k)) + +/** + Store a BIT STRING + @param in The array of bits to store (8 per char) + @param inlen The number of bits tostore + @param out [out] The destination for the DER encoded BIT STRING + @param outlen [in/out] The max size and resulting size of the DER BIT STRING + @return CRYPT_OK if successful +*/ +int der_encode_raw_bit_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long len, x, y; + unsigned char buf; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* avoid overflows */ + if ((err = der_length_bit_string(inlen, &len)) != CRYPT_OK) { + return err; + } + + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* store header (include bit padding count in length) */ + x = 0; + y = (inlen >> 3) + ((inlen&7) ? 1 : 0) + 1; + + out[x++] = 0x03; + if (y < 128) { + out[x++] = (unsigned char)y; + } else if (y < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)y; + } else if (y < 65536) { + out[x++] = 0x82; + out[x++] = (unsigned char)((y>>8)&255); + out[x++] = (unsigned char)(y&255); + } + + /* store number of zero padding bits */ + out[x++] = (unsigned char)((8 - inlen) & 7); + + /* store the bits in big endian format */ + for (y = buf = 0; y < inlen; y++) { + buf |= (getbit(in[y/8],7-y%8)?1:0) << (7 - (y & 7)); + if ((y & 7) == 7) { + out[x++] = buf; + buf = 0; + } + } + /* store last byte */ + if (inlen & 7) { + out[x++] = buf; + } + + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_length_bit_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_length_bit_string.c new file mode 100644 index 0000000..3966716 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/der_length_bit_string.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_bit_string.c + ASN.1 DER, get length of BIT STRING, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of BIT STRING + @param nbits The number of bits in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_bit_string(unsigned long nbits, unsigned long *outlen) +{ + unsigned long nbytes; + LTC_ARGCHK(outlen != NULL); + + /* get the number of the bytes */ + nbytes = (nbits >> 3) + ((nbits & 7) ? 1 : 0) + 1; + + if (nbytes < 128) { + /* 03 LL PP DD DD DD ... */ + *outlen = 2 + nbytes; + } else if (nbytes < 256) { + /* 03 81 LL PP DD DD DD ... */ + *outlen = 3 + nbytes; + } else if (nbytes < 65536) { + /* 03 82 LL LL PP DD DD DD ... */ + *outlen = 4 + nbytes; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/bit/der_length_bit_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/bit/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/bit/sub.mk new file mode 100644 index 0000000..4cf829e --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/bit/sub.mk @@ -0,0 +1,5 @@ +srcs-y += der_decode_bit_string.c +srcs-y += der_encode_bit_string.c +srcs-y += der_length_bit_string.c +srcs-y += der_decode_raw_bit_string.c +srcs-y += der_encode_raw_bit_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c new file mode 100644 index 0000000..96c31fe --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_boolean.c + ASN.1 DER, decode a BOOLEAN, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a BOOLEAN + @param in The destination for the DER encoded BOOLEAN + @param inlen The size of the DER BOOLEAN + @param out [out] The boolean to decode + @return CRYPT_OK if successful +*/ +int der_decode_boolean(const unsigned char *in, unsigned long inlen, + int *out) +{ + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + + if (inlen < 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) { + return CRYPT_INVALID_ARG; + } + + *out = (in[2]==0xFF) ? 1 : 0; + + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c new file mode 100644 index 0000000..90bf24b --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_boolean.c + ASN.1 DER, encode a BOOLEAN, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a BOOLEAN + @param in The boolean to encode + @param out [out] The destination for the DER encoded BOOLEAN + @param outlen [in/out] The max size and resulting size of the DER BOOLEAN + @return CRYPT_OK if successful +*/ +int der_encode_boolean(int in, + unsigned char *out, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(out != NULL); + + if (*outlen < 3) { + *outlen = 3; + return CRYPT_BUFFER_OVERFLOW; + } + + *outlen = 3; + out[0] = 0x01; + out[1] = 0x01; + out[2] = in ? 0xFF : 0x00; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_length_boolean.c b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_length_boolean.c new file mode 100644 index 0000000..3f677c5 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/der_length_boolean.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_boolean.c + ASN.1 DER, get length of a BOOLEAN, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of a BOOLEAN + @param outlen [out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_length_boolean(unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + *outlen = 3; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_length_boolean.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/boolean/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/sub.mk new file mode 100644 index 0000000..3761249 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/boolean/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_boolean.c +srcs-y += der_encode_boolean.c +srcs-y += der_length_boolean.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/choice/der_decode_choice.c b/core/lib/libtomcrypt/src/pk/asn1/der/choice/der_decode_choice.c new file mode 100644 index 0000000..b2b8bc0 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/choice/der_decode_choice.c @@ -0,0 +1,245 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_choice.c + ASN.1 DER, decode a CHOICE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a CHOICE + @param in The DER encoded input + @param inlen [in/out] The size of the input and resulting size of read type + @param list The list of items to decode + @param outlen The number of items in the list + @return CRYPT_OK on success +*/ +int der_decode_choice(const unsigned char *in, unsigned long *inlen, + ltc_asn1_list *list, unsigned long outlen) +{ + unsigned long size, x, z; + void *data; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(list != NULL); + + /* get blk size */ + if (*inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* set all of the "used" flags to zero */ + for (x = 0; x < outlen; x++) { + list[x].used = 0; + } + + /* now scan until we have a winner */ + for (x = 0; x < outlen; x++) { + size = list[x].size; + data = list[x].data; + + switch (list[x].type) { + case LTC_ASN1_BOOLEAN: + if (der_decode_boolean(in, *inlen, data) == CRYPT_OK) { + if (der_length_boolean(&z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_INTEGER: + if (der_decode_integer(in, *inlen, data) == CRYPT_OK) { + if (der_length_integer(data, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_SHORT_INTEGER: + if (der_decode_short_integer(in, *inlen, data) == CRYPT_OK) { + if (der_length_short_integer(size, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_BIT_STRING: + if (der_decode_bit_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_bit_string(size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_RAW_BIT_STRING: + if (der_decode_raw_bit_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_bit_string(size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_OCTET_STRING: + if (der_decode_octet_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_octet_string(size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_NULL: + if (*inlen == 2 && in[x] == 0x05 && in[x+1] == 0x00) { + *inlen = 2; + list[x].used = 1; + return CRYPT_OK; + } + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if (der_decode_object_identifier(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_object_identifier(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_TELETEX_STRING: + if (der_decode_teletex_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_teletex_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_IA5_STRING: + if (der_decode_ia5_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_ia5_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_PRINTABLE_STRING: + if (der_decode_printable_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_printable_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_UTF8_STRING: + if (der_decode_utf8_string(in, *inlen, data, &size) == CRYPT_OK) { + if (der_length_utf8_string(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + list[x].size = size; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_UTCTIME: + z = *inlen; + if (der_decode_utctime(in, &z, data) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if (der_decode_sequence(in, *inlen, data, size) == CRYPT_OK) { + if (der_length_sequence(data, size, &z) == CRYPT_OK) { + list[x].used = 1; + *inlen = z; + return CRYPT_OK; + } + } + break; + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + return CRYPT_INVALID_ARG; + default: + return CRYPT_INVALID_ARG; + } + } + + return CRYPT_INVALID_PACKET; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/choice/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/choice/sub.mk new file mode 100644 index 0000000..d3b95ec --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/choice/sub.mk @@ -0,0 +1 @@ +srcs-y += der_decode_choice.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_decode_ia5_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_decode_ia5_string.c new file mode 100644 index 0000000..d1dc468 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_decode_ia5_string.c @@ -0,0 +1,123 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_ia5_string.c + ASN.1 DER, encode a IA5 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a IA5 STRING + @param in The DER encoded IA5 STRING + @param inlen The size of the DER IA5 STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int t; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x16 */ + if ((in[0] & 0x1F) != 0x16) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + t = der_ia5_value_decode(in[x++]); + if (t == -1) { + return CRYPT_INVALID_ARG; + } + out[y] = t; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_decode_ia5_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.c new file mode 100644 index 0000000..17a6354 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.c @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_ia5_string.c + ASN.1 DER, encode a IA5 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Store an IA5 STRING + @param in The array of IA5 to store (one per char) + @param inlen The number of IA5 to store + @param out [out] The destination for the DER encoded IA5 STRING + @param outlen [in/out] The max size and resulting size of the DER IA5 STRING + @return CRYPT_OK if successful +*/ +int der_encode_ia5_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_ia5_string(in, inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x16; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = der_ia5_char_encode(in[y]); + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_length_ia5_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_length_ia5_string.c new file mode 100644 index 0000000..7acea72 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/der_length_ia5_string.c @@ -0,0 +1,221 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_ia5_string.c + ASN.1 DER, get length of IA5 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +static const struct { + int code, value; +} ia5_table[] = { +{ '\0', 0 }, +{ '\a', 7 }, +{ '\b', 8 }, +{ '\t', 9 }, +{ '\n', 10 }, +{ '\f', 12 }, +{ '\r', 13 }, +{ ' ', 32 }, +{ '!', 33 }, +{ '"', 34 }, +{ '#', 35 }, +{ '$', 36 }, +{ '%', 37 }, +{ '&', 38 }, +{ '\'', 39 }, +{ '(', 40 }, +{ ')', 41 }, +{ '*', 42 }, +{ '+', 43 }, +{ ',', 44 }, +{ '-', 45 }, +{ '.', 46 }, +{ '/', 47 }, +{ '0', 48 }, +{ '1', 49 }, +{ '2', 50 }, +{ '3', 51 }, +{ '4', 52 }, +{ '5', 53 }, +{ '6', 54 }, +{ '7', 55 }, +{ '8', 56 }, +{ '9', 57 }, +{ ':', 58 }, +{ ';', 59 }, +{ '<', 60 }, +{ '=', 61 }, +{ '>', 62 }, +{ '?', 63 }, +{ '@', 64 }, +{ 'A', 65 }, +{ 'B', 66 }, +{ 'C', 67 }, +{ 'D', 68 }, +{ 'E', 69 }, +{ 'F', 70 }, +{ 'G', 71 }, +{ 'H', 72 }, +{ 'I', 73 }, +{ 'J', 74 }, +{ 'K', 75 }, +{ 'L', 76 }, +{ 'M', 77 }, +{ 'N', 78 }, +{ 'O', 79 }, +{ 'P', 80 }, +{ 'Q', 81 }, +{ 'R', 82 }, +{ 'S', 83 }, +{ 'T', 84 }, +{ 'U', 85 }, +{ 'V', 86 }, +{ 'W', 87 }, +{ 'X', 88 }, +{ 'Y', 89 }, +{ 'Z', 90 }, +{ '[', 91 }, +{ '\\', 92 }, +{ ']', 93 }, +{ '^', 94 }, +{ '_', 95 }, +{ '`', 96 }, +{ 'a', 97 }, +{ 'b', 98 }, +{ 'c', 99 }, +{ 'd', 100 }, +{ 'e', 101 }, +{ 'f', 102 }, +{ 'g', 103 }, +{ 'h', 104 }, +{ 'i', 105 }, +{ 'j', 106 }, +{ 'k', 107 }, +{ 'l', 108 }, +{ 'm', 109 }, +{ 'n', 110 }, +{ 'o', 111 }, +{ 'p', 112 }, +{ 'q', 113 }, +{ 'r', 114 }, +{ 's', 115 }, +{ 't', 116 }, +{ 'u', 117 }, +{ 'v', 118 }, +{ 'w', 119 }, +{ 'x', 120 }, +{ 'y', 121 }, +{ 'z', 122 }, +{ '{', 123 }, +{ '|', 124 }, +{ '}', 125 }, +{ '~', 126 } +}; + +int der_ia5_char_encode(int c) +{ + int x; + for (x = 0; x < (int)(sizeof(ia5_table)/sizeof(ia5_table[0])); x++) { + if (ia5_table[x].code == c) { + return ia5_table[x].value; + } + } + return -1; +} + +int der_ia5_value_decode(int v) +{ + int x; + for (x = 0; x < (int)(sizeof(ia5_table)/sizeof(ia5_table[0])); x++) { + if (ia5_table[x].value == v) { + return ia5_table[x].code; + } + } + return -1; +} + +/** + Gets length of DER encoding of IA5 STRING + @param octets The values you want to encode + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_ia5_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x; + + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(octets != NULL); + + /* scan string for validity */ + for (x = 0; x < noctets; x++) { + if (der_ia5_char_encode(octets[x]) == -1) { + return CRYPT_INVALID_ARG; + } + } + + if (noctets < 128) { + /* 16 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 16 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 16 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 16 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/ia5/der_length_ia5_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/ia5/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/sub.mk new file mode 100644 index 0000000..dc32a5d --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/ia5/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_ia5_string.c +srcs-y += der_encode_ia5_string.c +srcs-y += der_length_ia5_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c new file mode 100644 index 0000000..195ba0f --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_integer.c + ASN.1 DER, decode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a mp_int integer + @param in The DER encoded data + @param inlen Size of DER encoded data + @param num The first mp_int to decode + @return CRYPT_OK if successful +*/ +int der_decode_integer(const unsigned char *in, unsigned long inlen, void *num) +{ + unsigned long x, y, z; + int err; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(in != NULL); + + /* min DER INTEGER is 0x02 01 00 == 0 */ + if (inlen < (1 + 1 + 1)) { + return CRYPT_INVALID_PACKET; + } + + /* ok expect 0x02 when we AND with 0001 1111 [1F] */ + x = 0; + if ((in[x++] & 0x1F) != 0x02) { + return CRYPT_INVALID_PACKET; + } + + /* now decode the len stuff */ + z = in[x++]; + + if ((z & 0x80) == 0x00) { + /* short form */ + + /* will it overflow? */ + if (x + z > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* no so read it */ + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, z)) != CRYPT_OK) { + return err; + } + } else { + /* long form */ + z &= 0x7F; + + /* will number of length bytes overflow? (or > 4) */ + if (((x + z) > inlen) || (z > 4) || (z == 0)) { + return CRYPT_INVALID_PACKET; + } + + /* now read it in */ + y = 0; + while (z--) { + y = ((unsigned long)(in[x++])) | (y << 8); + } + + /* now will reading y bytes overrun? */ + if ((x + y) > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* no so read it */ + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, y)) != CRYPT_OK) { + return err; + } + } + + /* see if it's negative */ + if (in[x] & 0x80) { + void *tmp; + if (mp_init(&tmp) != CRYPT_OK) { + return CRYPT_MEM; + } + + if (mp_2expt(tmp, mp_count_bits(num)) != CRYPT_OK || mp_sub(num, tmp, num) != CRYPT_OK) { + mp_clear(tmp); + return CRYPT_MEM; + } + mp_clear(tmp); + } + + return CRYPT_OK; + +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c new file mode 100644 index 0000000..466522b --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_integer.c + ASN.1 DER, encode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/* Exports a positive bignum as DER format (upto 2^32 bytes in size) */ +/** + Store a mp_int integer + @param num The first mp_int to encode + @param out [out] The destination for the DER encoded integers + @param outlen [in/out] The max size and resulting size of the DER encoded integers + @return CRYPT_OK if successful +*/ +int der_encode_integer(void *num, unsigned char *out, unsigned long *outlen) +{ + unsigned long tmplen, y; + int err, leading_zero; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* find out how big this will be */ + if ((err = der_length_integer(num, &tmplen)) != CRYPT_OK) { + return err; + } + + if (*outlen < tmplen) { + *outlen = tmplen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (mp_cmp_d(num, 0) != LTC_MP_LT) { + /* we only need a leading zero if the msb of the first byte is one */ + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { + leading_zero = 1; + } else { + leading_zero = 0; + } + + /* get length of num in bytes (plus 1 since we force the msbyte to zero) */ + y = mp_unsigned_bin_size(num) + leading_zero; + } else { + leading_zero = 0; + y = mp_count_bits(num); + y = y + (8 - (y & 7)); + y = y >> 3; + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --y; + } + + /* now store initial data */ + *out++ = 0x02; + if (y < 128) { + /* short form */ + *out++ = (unsigned char)y; + } else if (y < 256) { + *out++ = 0x81; + *out++ = (unsigned char)y; + } else if (y < 65536UL) { + *out++ = 0x82; + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; + } else if (y < 16777216UL) { + *out++ = 0x83; + *out++ = (unsigned char)((y>>16)&255); + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; + } else { + return CRYPT_INVALID_ARG; + } + + /* now store msbyte of zero if num is non-zero */ + if (leading_zero) { + *out++ = 0x00; + } + + /* if it's not zero store it as big endian */ + if (mp_cmp_d(num, 0) == LTC_MP_GT) { + /* now store the mpint */ + if ((err = mp_to_unsigned_bin(num, out)) != CRYPT_OK) { + return err; + } + } else if (mp_iszero(num) != LTC_MP_YES) { + void *tmp; + + /* negative */ + if (mp_init(&tmp) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* 2^roundup and subtract */ + y = mp_count_bits(num); + y = y + (8 - (y & 7)); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) y -= 8; + if (mp_2expt(tmp, y) != CRYPT_OK || mp_add(tmp, num, tmp) != CRYPT_OK) { + mp_clear(tmp); + return CRYPT_MEM; + } + if ((err = mp_to_unsigned_bin(tmp, out)) != CRYPT_OK) { + mp_clear(tmp); + return err; + } + mp_clear(tmp); + } + + /* we good */ + *outlen = tmplen; + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c new file mode 100644 index 0000000..7205a9d --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_integer.c + ASN.1 DER, get length of encoding, Tom St Denis +*/ + + +#ifdef LTC_DER +/** + Gets length of DER encoding of num + @param num The int to get the size of + @param outlen [out] The length of the DER encoding for the given integer + @return CRYPT_OK if successful +*/ +int der_length_integer(void *num, unsigned long *outlen) +{ + unsigned long z, len; + int leading_zero; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(outlen != NULL); + + if (mp_cmp_d(num, 0) != LTC_MP_LT) { + /* positive */ + + /* we only need a leading zero if the msb of the first byte is one */ + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { + leading_zero = 1; + } else { + leading_zero = 0; + } + + /* size for bignum */ + z = len = leading_zero + mp_unsigned_bin_size(num); + } else { + /* it's negative */ + /* find power of 2 that is a multiple of eight and greater than count bits */ + z = mp_count_bits(num); + z = z + (8 - (z & 7)); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --z; + len = z = z >> 3; + } + + /* now we need a length */ + if (z < 128) { + /* short form */ + ++len; + } else { + /* long form (relies on z != 0), assumes length bytes < 128 */ + ++len; + + while (z) { + ++len; + z >>= 8; + } + } + + /* we need a 0x02 to indicate it's INTEGER */ + ++len; + + /* return length */ + *outlen = len; + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/integer/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/integer/sub.mk new file mode 100644 index 0000000..d319f91 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/integer/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_integer.c +srcs-y += der_encode_integer.c +srcs-y += der_length_integer.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c new file mode 100644 index 0000000..13d5f1c --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_object_identifier.c + ASN.1 DER, Decode Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Decode OID data and store the array of integers in words + @param in The OID DER encoded data + @param inlen The length of the OID data + @param words [out] The destination of the OID words + @param outlen [in/out] The number of OID words + @return CRYPT_OK if successful +*/ +int der_decode_object_identifier(const unsigned char *in, unsigned long inlen, + unsigned long *words, unsigned long *outlen) +{ + unsigned long x, y, t, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(outlen != NULL); + + /* header is at least 3 bytes */ + if (inlen < 3) { + return CRYPT_INVALID_PACKET; + } + + /* must be room for at least two words */ + if (*outlen < 2) { + return CRYPT_BUFFER_OVERFLOW; + } + + /* decode the packet header */ + x = 0; + if ((in[x++] & 0x1F) != 0x06) { + return CRYPT_INVALID_PACKET; + } + + /* get the length */ + if (in[x] < 128) { + len = in[x++]; + } else { + if (in[x] < 0x81 || in[x] > 0x82) { + return CRYPT_INVALID_PACKET; + } + y = in[x++] & 0x7F; + len = 0; + while (y--) { + len = (len << 8) | (unsigned long)in[x++]; + } + } + + if (len < 1 || (len + x) > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* decode words */ + y = 0; + t = 0; + while (len--) { + t = (t << 7) | (in[x] & 0x7F); + if (!(in[x++] & 0x80)) { + /* store t */ + if (y >= *outlen) { + return CRYPT_BUFFER_OVERFLOW; + } + if (y == 0) { + words[0] = t / 40; + words[1] = t % 40; + y = 2; + } else { + words[y++] = t; + } + t = 0; + } + } + + *outlen = y; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_encode_object_identifier.c b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_encode_object_identifier.c new file mode 100644 index 0000000..890114d --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_encode_object_identifier.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_object_identifier.c + ASN.1 DER, Encode Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Encode an OID + @param words The words to encode (upto 32-bits each) + @param nwords The number of words in the OID + @param out [out] Destination of OID data + @param outlen [in/out] The max and resulting size of the OID + @return CRYPT_OK if successful +*/ +int der_encode_object_identifier(unsigned long *words, unsigned long nwords, + unsigned char *out, unsigned long *outlen) +{ + unsigned long i, x, y, z, t, mask, wordbuf; + int err; + + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* check length */ + if ((err = der_length_object_identifier(words, nwords, &x)) != CRYPT_OK) { + return err; + } + if (x > *outlen) { + *outlen = x; + return CRYPT_BUFFER_OVERFLOW; + } + + /* compute length to store OID data */ + z = 0; + wordbuf = words[0] * 40 + words[1]; + for (y = 1; y < nwords; y++) { + t = der_object_identifier_bits(wordbuf); + z += t/7 + ((t%7) ? 1 : 0) + (wordbuf == 0 ? 1 : 0); + if (y < nwords - 1) { + wordbuf = words[y + 1]; + } + } + + /* store header + length */ + x = 0; + out[x++] = 0x06; + if (z < 128) { + out[x++] = (unsigned char)z; + } else if (z < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)z; + } else if (z < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((z>>8)&255); + out[x++] = (unsigned char)(z&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store first byte */ + wordbuf = words[0] * 40 + words[1]; + for (i = 1; i < nwords; i++) { + /* store 7 bit words in little endian */ + t = wordbuf & 0xFFFFFFFF; + if (t) { + y = x; + mask = 0; + while (t) { + out[x++] = (unsigned char)((t & 0x7F) | mask); + t >>= 7; + mask |= 0x80; /* upper bit is set on all but the last byte */ + } + /* now swap bytes y...x-1 */ + z = x - 1; + while (y < z) { + t = out[y]; out[y] = out[z]; out[z] = (unsigned char)t; + ++y; + --z; + } + } else { + /* zero word */ + out[x++] = 0x00; + } + + if (i < nwords - 1) { + wordbuf = words[i + 1]; + } + } + + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_encode_object_identifier.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_length_object_identifier.c b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_length_object_identifier.c new file mode 100644 index 0000000..d2fd0e0 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/der_length_object_identifier.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_object_identifier.c + ASN.1 DER, get length of Object Identifier, Tom St Denis +*/ + +#ifdef LTC_DER + +unsigned long der_object_identifier_bits(unsigned long x) +{ + unsigned long c; + x &= 0xFFFFFFFF; + c = 0; + while (x) { + ++c; + x >>= 1; + } + return c; +} + + +/** + Gets length of DER encoding of Object Identifier + @param nwords The number of OID words + @param words The actual OID words to get the size of + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_object_identifier(unsigned long *words, unsigned long nwords, unsigned long *outlen) +{ + unsigned long y, z, t, wordbuf; + + LTC_ARGCHK(words != NULL); + LTC_ARGCHK(outlen != NULL); + + + /* must be >= 2 words */ + if (nwords < 2) { + return CRYPT_INVALID_ARG; + } + + /* word1 = 0,1,2,3 and word2 0..39 */ + if (words[0] > 3 || (words[0] < 2 && words[1] > 39)) { + return CRYPT_INVALID_ARG; + } + + /* leading word is the first two */ + z = 0; + wordbuf = words[0] * 40 + words[1]; + for (y = 1; y < nwords; y++) { + t = der_object_identifier_bits(wordbuf); + z += t/7 + ((t%7) ? 1 : 0) + (wordbuf == 0 ? 1 : 0); + if (y < nwords - 1) { + /* grab next word */ + wordbuf = words[y+1]; + } + } + + /* now depending on the length our length encoding changes */ + if (z < 128) { + z += 2; + } else if (z < 256) { + z += 3; + } else if (z < 65536UL) { + z += 4; + } else { + return CRYPT_INVALID_ARG; + } + + *outlen = z; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_length_object_identifier.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/sub.mk new file mode 100644 index 0000000..b56efb0 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/object_identifier/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_object_identifier.c +srcs-y += der_encode_object_identifier.c +srcs-y += der_length_object_identifier.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_decode_octet_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_decode_octet_string.c new file mode 100644 index 0000000..bae4760 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_decode_octet_string.c @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_octet_string.c + ASN.1 DER, encode a OCTET STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a OCTET STRING + @param in The DER encoded OCTET STRING + @param inlen The size of the DER OCTET STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x04 */ + if ((in[0] & 0x1F) != 0x04) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + out[y] = in[x++]; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_decode_octet_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c new file mode 100644 index 0000000..395774c --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_octet_string.c + ASN.1 DER, encode a OCTET STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store an OCTET STRING + @param in The array of OCTETS to store (one per char) + @param inlen The number of OCTETS to store + @param out [out] The destination for the DER encoded OCTET STRING + @param outlen [in/out] The max size and resulting size of the DER OCTET STRING + @return CRYPT_OK if successful +*/ +int der_encode_octet_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_octet_string(inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x04; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = in[y]; + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_length_octet_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_length_octet_string.c new file mode 100644 index 0000000..25ff5f8 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/octet/der_length_octet_string.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_octet_string.c + ASN.1 DER, get length of OCTET STRING, Tom St Denis +*/ + +#ifdef LTC_DER +/** + Gets length of DER encoding of OCTET STRING + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_octet_string(unsigned long noctets, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + + if (noctets < 128) { + /* 04 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 04 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 04 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 04 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/octet/der_length_octet_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/octet/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/octet/sub.mk new file mode 100644 index 0000000..04607ee --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/octet/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_octet_string.c +srcs-y += der_encode_octet_string.c +srcs-y += der_length_octet_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_decode_printable_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_decode_printable_string.c new file mode 100644 index 0000000..4688c38 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_decode_printable_string.c @@ -0,0 +1,123 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_printable_string.c + ASN.1 DER, encode a printable STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a printable STRING + @param in The DER encoded printable STRING + @param inlen The size of the DER printable STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int t; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x13 */ + if ((in[0] & 0x1F) != 0x13) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + t = der_printable_value_decode(in[x++]); + if (t == -1) { + return CRYPT_INVALID_ARG; + } + out[y] = t; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_decode_printable_string.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c new file mode 100644 index 0000000..f94bd5e --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_printable_string.c + ASN.1 DER, encode a printable STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Store an printable STRING + @param in The array of printable to store (one per char) + @param inlen The number of printable to store + @param out [out] The destination for the DER encoded printable STRING + @param outlen [in/out] The max size and resulting size of the DER printable STRING + @return CRYPT_OK if successful +*/ +int der_encode_printable_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + if ((err = der_length_printable_string(in, inlen, &len)) != CRYPT_OK) { + return err; + } + + /* too big? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x13; + if (inlen < 128) { + out[x++] = (unsigned char)inlen; + } else if (inlen < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)inlen; + } else if (inlen < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else if (inlen < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((inlen>>16)&255); + out[x++] = (unsigned char)((inlen>>8)&255); + out[x++] = (unsigned char)(inlen&255); + } else { + return CRYPT_INVALID_ARG; + } + + /* store octets */ + for (y = 0; y < inlen; y++) { + out[x++] = der_printable_char_encode(in[y]); + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_length_printable_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_length_printable_string.c new file mode 100644 index 0000000..73cd8ee --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/der_length_printable_string.c @@ -0,0 +1,193 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_printable_string.c + ASN.1 DER, get length of Printable STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +static const struct { + int code, value; +} printable_table[] = { +{ ' ', 32 }, +{ '\'', 39 }, +{ '(', 40 }, +{ ')', 41 }, +{ '+', 43 }, +{ ',', 44 }, +{ '-', 45 }, +{ '.', 46 }, +{ '/', 47 }, +{ '0', 48 }, +{ '1', 49 }, +{ '2', 50 }, +{ '3', 51 }, +{ '4', 52 }, +{ '5', 53 }, +{ '6', 54 }, +{ '7', 55 }, +{ '8', 56 }, +{ '9', 57 }, +{ ':', 58 }, +{ '=', 61 }, +{ '?', 63 }, +{ 'A', 65 }, +{ 'B', 66 }, +{ 'C', 67 }, +{ 'D', 68 }, +{ 'E', 69 }, +{ 'F', 70 }, +{ 'G', 71 }, +{ 'H', 72 }, +{ 'I', 73 }, +{ 'J', 74 }, +{ 'K', 75 }, +{ 'L', 76 }, +{ 'M', 77 }, +{ 'N', 78 }, +{ 'O', 79 }, +{ 'P', 80 }, +{ 'Q', 81 }, +{ 'R', 82 }, +{ 'S', 83 }, +{ 'T', 84 }, +{ 'U', 85 }, +{ 'V', 86 }, +{ 'W', 87 }, +{ 'X', 88 }, +{ 'Y', 89 }, +{ 'Z', 90 }, +{ 'a', 97 }, +{ 'b', 98 }, +{ 'c', 99 }, +{ 'd', 100 }, +{ 'e', 101 }, +{ 'f', 102 }, +{ 'g', 103 }, +{ 'h', 104 }, +{ 'i', 105 }, +{ 'j', 106 }, +{ 'k', 107 }, +{ 'l', 108 }, +{ 'm', 109 }, +{ 'n', 110 }, +{ 'o', 111 }, +{ 'p', 112 }, +{ 'q', 113 }, +{ 'r', 114 }, +{ 's', 115 }, +{ 't', 116 }, +{ 'u', 117 }, +{ 'v', 118 }, +{ 'w', 119 }, +{ 'x', 120 }, +{ 'y', 121 }, +{ 'z', 122 }, +}; + +int der_printable_char_encode(int c) +{ + int x; + for (x = 0; x < (int)(sizeof(printable_table)/sizeof(printable_table[0])); x++) { + if (printable_table[x].code == c) { + return printable_table[x].value; + } + } + return -1; +} + +int der_printable_value_decode(int v) +{ + int x; + for (x = 0; x < (int)(sizeof(printable_table)/sizeof(printable_table[0])); x++) { + if (printable_table[x].value == v) { + return printable_table[x].code; + } + } + return -1; +} + +/** + Gets length of DER encoding of Printable STRING + @param octets The values you want to encode + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_printable_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x; + + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(octets != NULL); + + /* scan string for validity */ + for (x = 0; x < noctets; x++) { + if (der_printable_char_encode(octets[x]) == -1) { + return CRYPT_INVALID_ARG; + } + } + + if (noctets < 128) { + /* 16 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 16 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 16 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 16 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_length_printable_string.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/sub.mk new file mode 100644 index 0000000..b509209 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/printable_string/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_printable_string.c +srcs-y += der_encode_printable_string.c +srcs-y += der_length_printable_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_ex.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_ex.c new file mode 100644 index 0000000..2973361 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_ex.c @@ -0,0 +1,347 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <stdarg.h> + + +/** + @file der_decode_sequence_ex.c + ASN.1 DER, decode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a SEQUENCE + @param in The DER encoded input + @param inlen The size of the input + @param list The list of items to decode + @param outlen The number of items in the list + @param ordered Search an unordeded or ordered list + @return CRYPT_OK on success +*/ +int der_decode_sequence_ex(const unsigned char *in, unsigned long inlen, + ltc_asn1_list *list, unsigned long outlen, int ordered) +{ + int err, i; + ltc_asn1_type type; + unsigned long size, x, y, z, blksize; + void *data; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(list != NULL); + + /* get blk size */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* sequence type? We allow 0x30 SEQUENCE and 0x31 SET since fundamentally they're the same structure */ + x = 0; + if (in[x] != 0x30 && in[x] != 0x31) { + return CRYPT_INVALID_PACKET; + } + ++x; + + /* check if the msb is set, which signals that the + * 7 lsb bits represent the number of bytes of the length + */ + if (in[x] < 128) { + blksize = in[x++]; + } else { + if (in[x] < 0x81 || in[x] > 0x83) { + return CRYPT_INVALID_PACKET; + } + y = in[x++] & 0x7F; + + /* would reading the len bytes overrun? */ + if (x + y > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read len */ + blksize = 0; + while (y--) { + blksize = (blksize << 8) | (unsigned long)in[x++]; + } + } + + /* would this blksize overflow? */ + if (x + blksize > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* mark all as unused */ + for (i = 0; i < (int)outlen; i++) { + list[i].used = 0; + } + + /* ok read data */ + inlen = blksize; + for (i = 0; i < (int)outlen; i++) { + z = 0; + type = list[i].type; + size = list[i].size; + data = list[i].data; + if (!ordered && list[i].used == 1) { continue; } + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + z = inlen; + if ((err = der_decode_boolean(in + x, z, ((int *)data))) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = der_length_boolean(&z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_INTEGER: + z = inlen; + if ((err = der_decode_integer(in + x, z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_integer(data, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_SHORT_INTEGER: + z = inlen; + if ((err = der_decode_short_integer(in + x, z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_short_integer(((unsigned long*)data)[0], &z)) != CRYPT_OK) { + goto LBL_ERR; + } + + break; + + case LTC_ASN1_BIT_STRING: + z = inlen; + if ((err = der_decode_bit_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_bit_string(size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_RAW_BIT_STRING: + z = inlen; + if ((err = der_decode_raw_bit_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_bit_string(size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_OCTET_STRING: + z = inlen; + if ((err = der_decode_octet_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_octet_string(size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_NULL: + if (inlen < 2 || in[x] != 0x05 || in[x+1] != 0x00) { + if (!ordered) { continue; } + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + z = 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + z = inlen; + if ((err = der_decode_object_identifier(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_object_identifier(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_TELETEX_STRING: + z = inlen; + if ((err = der_decode_teletex_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_teletex_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_IA5_STRING: + z = inlen; + if ((err = der_decode_ia5_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_ia5_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + + case LTC_ASN1_PRINTABLE_STRING: + z = inlen; + if ((err = der_decode_printable_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_printable_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_UTF8_STRING: + z = inlen; + if ((err = der_decode_utf8_string(in + x, z, data, &size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + list[i].size = size; + if ((err = der_length_utf8_string(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_UTCTIME: + z = inlen; + if ((err = der_decode_utctime(in + x, &z, data)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + break; + + case LTC_ASN1_SET: + z = inlen; + if ((err = der_decode_set(in + x, z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_sequence(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + /* detect if we have the right type */ + if ((type == LTC_ASN1_SETOF && (in[x] & 0x3F) != 0x31) || (type == LTC_ASN1_SEQUENCE && (in[x] & 0x3F) != 0x30)) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + z = inlen; + if ((err = der_decode_sequence(in + x, z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + if ((err = der_length_sequence(data, size, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + break; + + + case LTC_ASN1_CHOICE: + z = inlen; + if ((err = der_decode_choice(in + x, &z, data, size)) != CRYPT_OK) { + if (!ordered) { continue; } + goto LBL_ERR; + } + break; + + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + x += z; + inlen -= z; + list[i].used = 1; + if (!ordered) { + /* restart the decoder */ + i = -1; + } + } + + for (i = 0; i < (int)outlen; i++) { + if (list[i].used == 0) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + } + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_flexi.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_flexi.c new file mode 100644 index 0000000..e8969ed --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_flexi.c @@ -0,0 +1,460 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_sequence_flexi.c + ASN.1 DER, decode an array of ASN.1 types with a flexi parser, Tom St Denis +*/ + +#ifdef LTC_DER + +static unsigned long fetch_length(const unsigned char *in, unsigned long inlen, unsigned long *data_offset) +{ + unsigned long x, z; + + *data_offset = 0; + + /* skip type and read len */ + if (inlen < 2) { + return 0xFFFFFFFF; + } + ++in; ++(*data_offset); + + /* read len */ + x = *in++; ++(*data_offset); + + /* <128 means literal */ + if (x < 128) { + return x+*data_offset; + } + x &= 0x7F; /* the lower 7 bits are the length of the length */ + inlen -= 2; + + /* len means len of len! */ + if (x == 0 || x > 4 || x > inlen) { + return 0xFFFFFFFF; + } + + *data_offset += x; + z = 0; + while (x--) { + z = (z<<8) | ((unsigned long)*in); + ++in; + } + return z+*data_offset; +} + +/** + ASN.1 DER Flexi(ble) decoder will decode arbitrary DER packets and create a linked list of the decoded elements. + @param in The input buffer + @param inlen [in/out] The length of the input buffer and on output the amount of decoded data + @param out [out] A pointer to the linked list + @return CRYPT_OK on success. +*/ +int der_decode_sequence_flexi(const unsigned char *in, unsigned long *inlen, ltc_asn1_list **out) +{ + ltc_asn1_list *l; + unsigned long err, type, len, totlen, data_offset; + void *realloc_tmp; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(out != NULL); + + l = NULL; + totlen = 0; + + /* scan the input and and get lengths and what not */ + while (*inlen) { + /* read the type byte */ + type = *in; + + /* fetch length */ + len = fetch_length(in, *inlen, &data_offset); + if (len > *inlen) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* alloc new link */ + if (l == NULL) { + l = XCALLOC(1, sizeof(*l)); + if (l == NULL) { + err = CRYPT_MEM; + goto error; + } + } else { + l->next = XCALLOC(1, sizeof(*l)); + if (l->next == NULL) { + err = CRYPT_MEM; + goto error; + } + l->next->prev = l; + l = l->next; + } + + if ((type & 0x20) && (type != 0x30) && (type != 0x31)) { + /* constructed, use the 'used' field to store the original identifier */ + l->used = type; + /* treat constructed elements like SETs */ + type = 0x20; + } + else if ((type & 0xC0) == 0x80) { + /* context-specific, use the 'used' field to store the original identifier */ + l->used = type; + /* context-specific elements are treated as opaque data */ + type = 0x80; + } + + /* now switch on type */ + switch (type) { + case 0x01: /* BOOLEAN */ + l->type = LTC_ASN1_BOOLEAN; + l->size = 1; + l->data = XCALLOC(1, sizeof(int)); + + if ((err = der_decode_boolean(in, *inlen, l->data)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_boolean(&len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x02: /* INTEGER */ + /* init field */ + l->type = LTC_ASN1_INTEGER; + l->size = 1; + if ((err = mp_init(&l->data)) != CRYPT_OK) { + goto error; + } + + /* decode field */ + if ((err = der_decode_integer(in, *inlen, l->data)) != CRYPT_OK) { + goto error; + } + + /* calc length of object */ + if ((err = der_length_integer(l->data, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x03: /* BIT */ + /* init field */ + l->type = LTC_ASN1_BIT_STRING; + l->size = len * 8; /* *8 because we store decoded bits one per char and they are encoded 8 per char. */ + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_bit_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_bit_string(l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x04: /* OCTET */ + + /* init field */ + l->type = LTC_ASN1_OCTET_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_octet_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_octet_string(l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x05: /* NULL */ + + /* valid NULL is 0x05 0x00 */ + if (in[0] != 0x05 || in[1] != 0x00) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* simple to store ;-) */ + l->type = LTC_ASN1_NULL; + l->data = NULL; + l->size = 0; + len = 2; + + break; + + case 0x06: /* OID */ + + /* init field */ + l->type = LTC_ASN1_OBJECT_IDENTIFIER; + l->size = len; + + if ((l->data = XCALLOC(len, sizeof(unsigned long))) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_object_identifier(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_object_identifier(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + + /* resize it to save a bunch of mem */ + if ((realloc_tmp = XREALLOC(l->data, l->size * sizeof(unsigned long))) == NULL) { + /* out of heap but this is not an error */ + break; + } + l->data = realloc_tmp; + break; + + case 0x0C: /* UTF8 */ + + /* init field */ + l->type = LTC_ASN1_UTF8_STRING; + l->size = len; + + if ((l->data = XCALLOC(sizeof(wchar_t), l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_utf8_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_utf8_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x13: /* PRINTABLE */ + + /* init field */ + l->type = LTC_ASN1_PRINTABLE_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_printable_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_printable_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x14: /* TELETEXT */ + + /* init field */ + l->type = LTC_ASN1_TELETEX_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_teletex_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_teletex_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x16: /* IA5 */ + + /* init field */ + l->type = LTC_ASN1_IA5_STRING; + l->size = len; + + if ((l->data = XCALLOC(1, l->size)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + if ((err = der_decode_ia5_string(in, *inlen, l->data, &l->size)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_ia5_string(l->data, l->size, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x17: /* UTC TIME */ + + /* init field */ + l->type = LTC_ASN1_UTCTIME; + l->size = 1; + + if ((l->data = XCALLOC(1, sizeof(ltc_utctime))) == NULL) { + err = CRYPT_MEM; + goto error; + } + + len = *inlen; + if ((err = der_decode_utctime(in, &len, l->data)) != CRYPT_OK) { + goto error; + } + + if ((err = der_length_utctime(l->data, &len)) != CRYPT_OK) { + goto error; + } + break; + + case 0x20: /* Any CONSTRUCTED element that is neither SEQUENCE nor SET */ + case 0x30: /* SEQUENCE */ + case 0x31: /* SET */ + + /* init field */ + if (type == 0x20) { + l->type = LTC_ASN1_CONSTRUCTED; + } + else if (type == 0x30) { + l->type = LTC_ASN1_SEQUENCE; + } + else { + l->type = LTC_ASN1_SET; + } + + /* jump to the start of the data */ + in += data_offset; + *inlen -= data_offset; + len = len - data_offset; + + /* Sequence elements go as child */ + if ((err = der_decode_sequence_flexi(in, &len, &(l->child))) != CRYPT_OK) { + goto error; + } + + /* len update */ + totlen += data_offset; + + /* the flexi decoder can also do nothing, so make sure a child has been allocated */ + if (l->child) { + /* link them up y0 */ + l->child->parent = l; + } + + break; + + case 0x80: /* Context-specific */ + l->type = LTC_ASN1_CONTEXT_SPECIFIC; + + if ((l->data = XCALLOC(1, len - data_offset)) == NULL) { + err = CRYPT_MEM; + goto error; + } + + XMEMCPY(l->data, in + data_offset, len - data_offset); + l->size = len - data_offset; + + break; + + default: + /* invalid byte ... this is a soft error */ + /* remove link */ + if (l->prev) { + l = l->prev; + XFREE(l->next); + l->next = NULL; + } + goto outside; + } + + /* advance pointers */ + totlen += len; + in += len; + *inlen -= len; + } + +outside: + + /* in case we processed anything */ + if (totlen) { + /* rewind l please */ + while (l->prev != NULL || l->parent != NULL) { + if (l->parent != NULL) { + l = l->parent; + } else { + l = l->prev; + } + } + } + + /* return */ + *out = l; + *inlen = totlen; + return CRYPT_OK; + +error: + /* free list */ + der_sequence_free(l); + + return err; +} + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c new file mode 100644 index 0000000..ea23558 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c @@ -0,0 +1,180 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <stdarg.h> + + +/** + @file der_decode_sequence_multi.c + ASN.1 DER, decode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Decode a SEQUENCE type using a VA list + @param in Input buffer + @param inlen Length of input in octets + @remark <...> is of the form <type, size, data> (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_decode_sequence_multi(const unsigned char *in, unsigned long inlen, ...) +{ + int err; + ltc_asn1_type type; + unsigned long size, x; + void *data; + va_list args; + ltc_asn1_list *list; + + LTC_ARGCHK(in != NULL); + + /* get size of output that will be required */ + va_start(args, inlen); + x = 0; + for (;;) { + type = va_arg(args, ltc_asn1_type); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + LTC_UNUSED_PARAM(size); + LTC_UNUSED_PARAM(data); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_CHOICE: + case LTC_ASN1_RAW_BIT_STRING: + case LTC_ASN1_TELETEX_STRING: + ++x; + break; + + case LTC_ASN1_EOL: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + va_end(args); + return CRYPT_INVALID_ARG; + default: + va_end(args); + return CRYPT_INVALID_ARG; + } + } + va_end(args); + + /* allocate structure for x elements */ + if (x == 0) { + return CRYPT_NOP; + } + + list = XCALLOC(sizeof(*list), x); + if (list == NULL) { + return CRYPT_MEM; + } + + /* fill in the structure */ + va_start(args, inlen); + x = 0; + for (;;) { + type = va_arg(args, ltc_asn1_type); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_CHOICE: + case LTC_ASN1_RAW_BIT_STRING: + case LTC_ASN1_TELETEX_STRING: + LTC_SET_ASN1(list, x++, type, data, size); + break; + /* coverity[dead_error_line] */ + case LTC_ASN1_EOL: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + break; + default: + va_end(args); + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + va_end(args); + + err = der_decode_sequence(in, inlen, list, x); +LBL_ERR: + XFREE(list); + return err; +} + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_subject_public_key_info.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_subject_public_key_info.c new file mode 100644 index 0000000..22569bb --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_decode_subject_public_key_info.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + */ +#include "tomcrypt.h" +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a Subject Public Key structure --nmav +*/ + +#ifdef LTC_DER + +/* AlgorithmIdentifier := SEQUENCE { + * algorithm OBJECT IDENTIFIER, + * parameters ANY DEFINED BY algorithm + * } + * + * SubjectPublicKeyInfo := SEQUENCE { + * algorithm AlgorithmIdentifier, + * subjectPublicKey BIT STRING + * } + */ +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form <type, size, data> (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_decode_subject_public_key_info(const unsigned char *in, unsigned long inlen, + unsigned int algorithm, void* public_key, unsigned long* public_key_len, + unsigned long parameters_type, ltc_asn1_list* parameters, unsigned long parameters_len) +{ + int err; + unsigned long len; + oid_st oid; + unsigned char *tmpbuf; + unsigned long tmpoid[16]; + ltc_asn1_list alg_id[2]; + ltc_asn1_list subject_pubkey[2]; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != 0); + LTC_ARGCHK(public_key_len != NULL); + + err = pk_get_oid(algorithm, &oid); + if (err != CRYPT_OK) { + return err; + } + + /* see if the OpenSSL DER format RSA public key will work */ + tmpbuf = XCALLOC(1, LTC_DER_MAX_PUBKEY_SIZE*8); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + /* this includes the internal hash ID and optional params (NULL in this case) */ + LTC_SET_ASN1(alg_id, 0, LTC_ASN1_OBJECT_IDENTIFIER, tmpoid, sizeof(tmpoid)/sizeof(tmpoid[0])); + LTC_SET_ASN1(alg_id, 1, parameters_type, parameters, parameters_len); + + /* the actual format of the SSL DER key is odd, it stores a RSAPublicKey + * in a **BIT** string ... so we have to extract it then proceed to convert bit to octet + */ + LTC_SET_ASN1(subject_pubkey, 0, LTC_ASN1_SEQUENCE, alg_id, 2); + LTC_SET_ASN1(subject_pubkey, 1, LTC_ASN1_RAW_BIT_STRING, tmpbuf, LTC_DER_MAX_PUBKEY_SIZE*8); + + err=der_decode_sequence(in, inlen, subject_pubkey, 2UL); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + if ((alg_id[0].size != oid.OIDlen) || + XMEMCMP(oid.OID, alg_id[0].data, oid.OIDlen * sizeof(oid.OID[0]))) { + /* OID mismatch */ + err = CRYPT_PK_INVALID_TYPE; + goto LBL_ERR; + } + + len = subject_pubkey[1].size/8; + if (*public_key_len > len) { + XMEMCPY(public_key, subject_pubkey[1].data, len); + *public_key_len = len; + } else { + *public_key_len = len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + err = CRYPT_OK; + +LBL_ERR: + + XFREE(tmpbuf); + + return err; +} + +#endif diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_ex.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_ex.c new file mode 100644 index 0000000..69ae0f1 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_ex.c @@ -0,0 +1,387 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <stdarg.h> + + +/** + @file der_encode_sequence_ex.c + ASN.1 DER, encode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Encode a SEQUENCE + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @param type_of LTC_ASN1_SEQUENCE or LTC_ASN1_SET/LTC_ASN1_SETOF + @return CRYPT_OK on success +*/ +int der_encode_sequence_ex(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int type_of) +{ + int err; + ltc_asn1_type type; + unsigned long size, x, y, z, i; + void *data; + + LTC_ARGCHK(list != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + y = 0; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + if ((err = der_length_boolean(&x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_INTEGER: + if ((err = der_length_integer(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SHORT_INTEGER: + if ((err = der_length_short_integer(*((unsigned long*)data), &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_RAW_BIT_STRING: + if ((err = der_length_bit_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_OCTET_STRING: + if ((err = der_length_octet_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_NULL: + y += 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if ((err = der_length_object_identifier(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_IA5_STRING: + if ((err = der_length_ia5_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_PRINTABLE_STRING: + if ((err = der_length_printable_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTF8_STRING: + if ((err = der_length_utf8_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTCTIME: + if ((err = der_length_utctime(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if ((err = der_length_sequence(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + case LTC_ASN1_TELETEX_STRING: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + + /* calc header size */ + z = y; + if (y < 128) { + y += 2; + } else if (y < 256) { + /* 0x30 0x81 LL */ + y += 3; + } else if (y < 65536UL) { + /* 0x30 0x82 LL LL */ + y += 4; + } else if (y < 16777216UL) { + /* 0x30 0x83 LL LL LL */ + y += 5; + } else { + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + + /* too big ? */ + if (*outlen < y) { + *outlen = y; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* store header */ + x = 0; + out[x++] = (type_of == LTC_ASN1_SEQUENCE) ? 0x30 : 0x31; + + if (z < 128) { + out[x++] = (unsigned char)z; + } else if (z < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)z; + } else if (z < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((z>>8UL)&255); + out[x++] = (unsigned char)(z&255); + } else if (z < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((z>>16UL)&255); + out[x++] = (unsigned char)((z>>8UL)&255); + out[x++] = (unsigned char)(z&255); + } + + /* store data */ + *outlen -= x; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + z = *outlen; + if ((err = der_encode_boolean(*((int *)data), out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_INTEGER: + z = *outlen; + if ((err = der_encode_integer(data, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SHORT_INTEGER: + z = *outlen; + if ((err = der_encode_short_integer(*((unsigned long*)data), out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_BIT_STRING: + z = *outlen; + if ((err = der_encode_bit_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_RAW_BIT_STRING: + z = *outlen; + if ((err = der_encode_raw_bit_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_OCTET_STRING: + z = *outlen; + if ((err = der_encode_octet_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_NULL: + out[x++] = 0x05; + out[x++] = 0x00; + *outlen -= 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + z = *outlen; + if ((err = der_encode_object_identifier(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_IA5_STRING: + z = *outlen; + if ((err = der_encode_ia5_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_PRINTABLE_STRING: + z = *outlen; + if ((err = der_encode_printable_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_UTF8_STRING: + z = *outlen; + if ((err = der_encode_utf8_string(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_UTCTIME: + z = *outlen; + if ((err = der_encode_utctime(data, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SET: + z = *outlen; + if ((err = der_encode_set(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SETOF: + z = *outlen; + if ((err = der_encode_setof(data, size, out + x, &z)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_SEQUENCE: + z = *outlen; + if ((err = der_encode_sequence_ex(data, size, out + x, &z, type)) != CRYPT_OK) { + goto LBL_ERR; + } + x += z; + *outlen -= z; + break; + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + case LTC_ASN1_TELETEX_STRING: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + *outlen = x; + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_multi.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_multi.c new file mode 100644 index 0000000..8bfc9ae --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_multi.c @@ -0,0 +1,183 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <stdarg.h> + + +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form <type, size, data> (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...) +{ + int err; + ltc_asn1_type type; + unsigned long size, x; + void *data; + va_list args; + ltc_asn1_list *list; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + va_start(args, outlen); + x = 0; + for (;;) { + type = va_arg(args, ltc_asn1_type); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + LTC_UNUSED_PARAM(size); + LTC_UNUSED_PARAM(data); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_RAW_BIT_STRING: + ++x; + break; + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + case LTC_ASN1_TELETEX_STRING: + va_end(args); + return CRYPT_INVALID_ARG; + default: + va_end(args); + return CRYPT_INVALID_ARG; + } + } + va_end(args); + + /* allocate structure for x elements */ + if (x == 0) { + return CRYPT_NOP; + } + + list = XCALLOC(sizeof(*list), x); + if (list == NULL) { + return CRYPT_MEM; + } + + /* fill in the structure */ + va_start(args, outlen); + x = 0; + for (;;) { + type = va_arg(args, ltc_asn1_type); + size = va_arg(args, unsigned long); + data = va_arg(args, void*); + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_OCTET_STRING: + case LTC_ASN1_NULL: + case LTC_ASN1_OBJECT_IDENTIFIER: + case LTC_ASN1_IA5_STRING: + case LTC_ASN1_PRINTABLE_STRING: + case LTC_ASN1_UTF8_STRING: + case LTC_ASN1_UTCTIME: + case LTC_ASN1_SEQUENCE: + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_RAW_BIT_STRING: + LTC_SET_ASN1(list, x++, type, data, size); + break; + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + case LTC_ASN1_TELETEX_STRING: + va_end(args); + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + default: + va_end(args); + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + va_end(args); + + err = der_encode_sequence(list, x, out, outlen); +LBL_ERR: + XFREE(list); + return err; +} + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_subject_public_key_info.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_subject_public_key_info.c new file mode 100644 index 0000000..a075e7c --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_encode_subject_public_key_info.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + */ +#include "tomcrypt.h" + +/** + @file der_encode_sequence_multi.c + ASN.1 DER, encode a Subject Public Key structure --nmav +*/ + +#ifdef LTC_DER + +/* AlgorithmIdentifier := SEQUENCE { + * algorithm OBJECT IDENTIFIER, + * parameters ANY DEFINED BY algorithm + * } + * + * SubjectPublicKeyInfo := SEQUENCE { + * algorithm AlgorithmIdentifier, + * subjectPublicKey BIT STRING + * } + */ +/** + Encode a SEQUENCE type using a VA list + @param out [out] Destination for data + @param outlen [in/out] Length of buffer and resulting length of output + @remark <...> is of the form <type, size, data> (int, unsigned long, void*) + @return CRYPT_OK on success +*/ +int der_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen, + unsigned int algorithm, void* public_key, unsigned long public_key_len, + unsigned long parameters_type, void* parameters, unsigned long parameters_len) +{ + int err; + ltc_asn1_list alg_id[2]; + oid_st oid; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + err = pk_get_oid(algorithm, &oid); + if (err != CRYPT_OK) { + return err; + } + + LTC_SET_ASN1(alg_id, 0, LTC_ASN1_OBJECT_IDENTIFIER, oid.OID, oid.OIDlen); + LTC_SET_ASN1(alg_id, 1, parameters_type, parameters, parameters_len); + + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SEQUENCE, (unsigned long)sizeof(alg_id)/sizeof(alg_id[0]), alg_id, + LTC_ASN1_RAW_BIT_STRING, (unsigned long)(public_key_len*8), public_key, + LTC_ASN1_EOL, 0UL, NULL); + +} + +#endif + + diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_length_sequence.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_length_sequence.c new file mode 100644 index 0000000..6f9d688 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_length_sequence.c @@ -0,0 +1,210 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_sequence.c + ASN.1 DER, length a SEQUENCE, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Get the length of a DER sequence + @param list The sequences of items in the SEQUENCE + @param inlen The number of items + @param outlen [out] The length required in octets to store it + @return CRYPT_OK on success +*/ +int der_length_sequence(ltc_asn1_list *list, unsigned long inlen, + unsigned long *outlen) +{ + int err; + ltc_asn1_type type; + unsigned long size, x, y, i; + void *data; + + LTC_ARGCHK(list != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get size of output that will be required */ + y = 0; + for (i = 0; i < inlen; i++) { + type = list[i].type; + size = list[i].size; + data = list[i].data; + + if (type == LTC_ASN1_EOL) { + break; + } + + switch (type) { + case LTC_ASN1_BOOLEAN: + if ((err = der_length_boolean(&x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_INTEGER: + if ((err = der_length_integer(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SHORT_INTEGER: + if ((err = der_length_short_integer(*((unsigned long *)data), &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_BIT_STRING: + case LTC_ASN1_RAW_BIT_STRING: + if ((err = der_length_bit_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_OCTET_STRING: + if ((err = der_length_octet_string(size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_NULL: + y += 2; + break; + + case LTC_ASN1_OBJECT_IDENTIFIER: + if ((err = der_length_object_identifier(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_IA5_STRING: + if ((err = der_length_ia5_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_TELETEX_STRING: + if ((err = der_length_teletex_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_PRINTABLE_STRING: + if ((err = der_length_printable_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTCTIME: + if ((err = der_length_utctime(data, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_UTF8_STRING: + if ((err = der_length_utf8_string(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: + if ((err = der_length_sequence(data, size, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + y += x; + break; + + + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + default: + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + } + + /* calc header size */ + if (y < 128) { + y += 2; + } else if (y < 256) { + /* 0x30 0x81 LL */ + y += 3; + } else if (y < 65536UL) { + /* 0x30 0x82 LL LL */ + y += 4; + } else if (y < 16777216UL) { + /* 0x30 0x83 LL LL LL */ + y += 5; + } else { + err = CRYPT_INVALID_ARG; + goto LBL_ERR; + } + + /* store size */ + *outlen = y; + err = CRYPT_OK; + +LBL_ERR: + return err; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c new file mode 100644 index 0000000..d2ded80 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_sequence_free.c + ASN.1 DER, free's a structure allocated by der_decode_sequence_flexi(), Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Free memory allocated by der_decode_sequence_flexi() + @param in The list to free +*/ +void der_sequence_free(ltc_asn1_list *in) +{ + ltc_asn1_list *l; + + if (!in) return; + + /* walk to the start of the chain */ + while (in->prev != NULL || in->parent != NULL) { + if (in->parent != NULL) { + in = in->parent; + } else { + in = in->prev; + } + } + + /* now walk the list and free stuff */ + while (in != NULL) { + /* is there a child? */ + if (in->child) { + /* disconnect */ + in->child->parent = NULL; + der_sequence_free(in->child); + } + + switch (in->type) { + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: + case LTC_ASN1_SEQUENCE: break; + case LTC_ASN1_INTEGER : if (in->data != NULL) { mp_clear(in->data); } break; + default : if (in->data != NULL) { XFREE(in->data); } + } + + /* move to next and free current */ + l = in->next; + XFREE(in); + in = l; + } +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sequence/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/sub.mk new file mode 100644 index 0000000..a50b4ba --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sequence/sub.mk @@ -0,0 +1,9 @@ +srcs-y += der_decode_sequence_ex.c +srcs-y += der_decode_sequence_flexi.c +srcs-y += der_decode_sequence_multi.c +srcs-y += der_encode_sequence_ex.c +srcs-y += der_encode_sequence_multi.c +srcs-y += der_length_sequence.c +srcs-y += der_sequence_free.c +srcs-y += der_decode_subject_public_key_info.c +srcs-y += der_encode_subject_public_key_info.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_set.c b/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_set.c new file mode 100644 index 0000000..881a226 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_set.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_set.c + ASN.1 DER, Encode a SET, Tom St Denis +*/ + +#ifdef LTC_DER + +/* LTC define to ASN.1 TAG */ +static int ltc_to_asn1(ltc_asn1_type v) +{ + switch (v) { + case LTC_ASN1_BOOLEAN: return 0x01; + case LTC_ASN1_INTEGER: + case LTC_ASN1_SHORT_INTEGER: return 0x02; + case LTC_ASN1_RAW_BIT_STRING: + case LTC_ASN1_BIT_STRING: return 0x03; + case LTC_ASN1_OCTET_STRING: return 0x04; + case LTC_ASN1_NULL: return 0x05; + case LTC_ASN1_OBJECT_IDENTIFIER: return 0x06; + case LTC_ASN1_UTF8_STRING: return 0x0C; + case LTC_ASN1_PRINTABLE_STRING: return 0x13; + case LTC_ASN1_TELETEX_STRING: return 0x14; + case LTC_ASN1_IA5_STRING: return 0x16; + case LTC_ASN1_UTCTIME: return 0x17; + case LTC_ASN1_SEQUENCE: return 0x30; + case LTC_ASN1_SET: + case LTC_ASN1_SETOF: return 0x31; + case LTC_ASN1_CHOICE: + case LTC_ASN1_CONSTRUCTED: + case LTC_ASN1_CONTEXT_SPECIFIC: + case LTC_ASN1_EOL: return -1; + default: return -1; + } + return -1; +} + + +static int qsort_helper(const void *a, const void *b) +{ + ltc_asn1_list *A = (ltc_asn1_list *)a, *B = (ltc_asn1_list *)b; + int r; + + r = ltc_to_asn1(A->type) - ltc_to_asn1(B->type); + + /* for QSORT the order is UNDEFINED if they are "equal" which means it is NOT DETERMINISTIC. So we force it to be :-) */ + if (r == 0) { + /* their order in the original list now determines the position */ + return A->used - B->used; + } else { + return r; + } +} + +/* + Encode a SET type + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @return CRYPT_OK on success +*/ +int der_encode_set(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + ltc_asn1_list *copy; + unsigned long x; + int err; + + /* make copy of list */ + copy = XCALLOC(inlen, sizeof(*copy)); + if (copy == NULL) { + return CRYPT_MEM; + } + + /* fill in used member with index so we can fully sort it */ + for (x = 0; x < inlen; x++) { + copy[x] = list[x]; + copy[x].used = x; + } + + /* sort it by the "type" field */ + XQSORT(copy, inlen, sizeof(*copy), &qsort_helper); + + /* call der_encode_sequence_ex() */ + err = der_encode_sequence_ex(copy, inlen, out, outlen, LTC_ASN1_SET); + + /* free list */ + XFREE(copy); + + return err; +} + + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_setof.c b/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_setof.c new file mode 100644 index 0000000..66fe72f --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/set/der_encode_setof.c @@ -0,0 +1,190 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_setof.c + ASN.1 DER, Encode SET OF, Tom St Denis +*/ + +#ifdef LTC_DER + +struct edge { + unsigned char *start; + unsigned long size; +}; + +static int qsort_helper(const void *a, const void *b) +{ + struct edge *A = (struct edge *)a, *B = (struct edge *)b; + int r; + unsigned long x; + + /* compare min length */ + r = XMEMCMP(A->start, B->start, MIN(A->size, B->size)); + + if (r == 0 && A->size != B->size) { + if (A->size > B->size) { + for (x = B->size; x < A->size; x++) { + if (A->start[x]) { + return 1; + } + } + } else { + for (x = A->size; x < B->size; x++) { + if (B->start[x]) { + return -1; + } + } + } + } + + return r; +} + +/** + Encode a SETOF stucture + @param list The list of items to encode + @param inlen The number of items in the list + @param out [out] The destination + @param outlen [in/out] The size of the output + @return CRYPT_OK on success +*/ +int der_encode_setof(ltc_asn1_list *list, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, z; + ptrdiff_t hdrlen; + int err; + struct edge *edges; + unsigned char *ptr, *buf; + + /* check that they're all the same type */ + for (x = 1; x < inlen; x++) { + if (list[x].type != list[x-1].type) { + return CRYPT_INVALID_ARG; + } + } + + /* alloc buffer to store copy of output */ + buf = XCALLOC(1, *outlen); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* encode list */ + if ((err = der_encode_sequence_ex(list, inlen, buf, outlen, LTC_ASN1_SETOF)) != CRYPT_OK) { + XFREE(buf); + return err; + } + + /* allocate edges */ + edges = XCALLOC(inlen, sizeof(*edges)); + if (edges == NULL) { + XFREE(buf); + return CRYPT_MEM; + } + + /* skip header */ + ptr = buf + 1; + + /* now skip length data */ + x = *ptr++; + if (x >= 0x80) { + ptr += (x & 0x7F); + } + + /* get the size of the static header */ + hdrlen = ptr - buf; + + + /* scan for edges */ + x = 0; + while (ptr < (buf + *outlen)) { + /* store start */ + edges[x].start = ptr; + + /* skip type */ + z = 1; + + /* parse length */ + y = ptr[z++]; + if (y < 128) { + edges[x].size = y; + } else { + y &= 0x7F; + edges[x].size = 0; + while (y--) { + edges[x].size = (edges[x].size << 8) | ((unsigned long)ptr[z++]); + } + } + + /* skip content */ + edges[x].size += z; + ptr += edges[x].size; + ++x; + } + + /* sort based on contents (using edges) */ + XQSORT(edges, inlen, sizeof(*edges), &qsort_helper); + + /* copy static header */ + XMEMCPY(out, buf, hdrlen); + + /* copy+sort using edges+indecies to output from buffer */ + for (y = hdrlen, x = 0; x < inlen; x++) { + XMEMCPY(out+y, edges[x].start, edges[x].size); + y += edges[x].size; + } + +#ifdef LTC_CLEAN_STACK + zeromem(buf, *outlen); +#endif + + /* free buffers */ + XFREE(edges); + XFREE(buf); + + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/set/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/set/sub.mk new file mode 100644 index 0000000..52525d6 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/set/sub.mk @@ -0,0 +1,2 @@ +srcs-y += der_encode_set.c +srcs-y += der_encode_setof.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_decode_short_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_decode_short_integer.c new file mode 100644 index 0000000..462f750 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_decode_short_integer.c @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_short_integer.c + ASN.1 DER, decode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a short integer + @param in The DER encoded data + @param inlen Size of data + @param num [out] The integer to decode + @return CRYPT_OK if successful +*/ +int der_decode_short_integer(const unsigned char *in, unsigned long inlen, unsigned long *num) +{ + unsigned long len, x, y; + + LTC_ARGCHK(num != NULL); + LTC_ARGCHK(in != NULL); + + /* check length */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check header */ + x = 0; + if ((in[x++] & 0x1F) != 0x02) { + return CRYPT_INVALID_PACKET; + } + + /* get the packet len */ + len = in[x++]; + + if (x + len > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read number */ + y = 0; + while (len--) { + y = (y<<8) | (unsigned long)in[x++]; + } + *num = y; + + return CRYPT_OK; + +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_decode_short_integer.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_encode_short_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_encode_short_integer.c new file mode 100644 index 0000000..2f2cf33 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_encode_short_integer.c @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_short_integer.c + ASN.1 DER, encode an integer, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a short integer in the range (0,2^32-1) + @param num The integer to encode + @param out [out] The destination for the DER encoded integers + @param outlen [in/out] The max size and resulting size of the DER encoded integers + @return CRYPT_OK if successful +*/ +int der_encode_short_integer(unsigned long num, unsigned char *out, unsigned long *outlen) +{ + unsigned long len, x, y, z; + int err; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* force to 32 bits */ + num &= 0xFFFFFFFFUL; + + /* find out how big this will be */ + if ((err = der_length_short_integer(num, &len)) != CRYPT_OK) { + return err; + } + + if (*outlen < len) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* get len of output */ + z = 0; + y = num; + while (y) { + ++z; + y >>= 8; + } + + /* handle zero */ + if (z == 0) { + z = 1; + } + + /* see if msb is set */ + z += (num&(1UL<<((z<<3) - 1))) ? 1 : 0; + + /* adjust the number so the msB is non-zero */ + for (x = 0; (z <= 4) && (x < (4 - z)); x++) { + num <<= 8; + } + + /* store header */ + x = 0; + out[x++] = 0x02; + out[x++] = (unsigned char)z; + + /* if 31st bit is set output a leading zero and decrement count */ + if (z == 5) { + out[x++] = 0; + --z; + } + + /* store values */ + for (y = 0; y < z; y++) { + out[x++] = (unsigned char)((num >> 24) & 0xFF); + num <<= 8; + } + + /* we good */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_encode_short_integer.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_length_short_integer.c b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_length_short_integer.c new file mode 100644 index 0000000..1672697 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/der_length_short_integer.c @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_short_integer.c + ASN.1 DER, get length of encoding, Tom St Denis +*/ + + +#ifdef LTC_DER +/** + Gets length of DER encoding of num + @param num The integer to get the size of + @param outlen [out] The length of the DER encoding for the given integer + @return CRYPT_OK if successful +*/ +int der_length_short_integer(unsigned long num, unsigned long *outlen) +{ + unsigned long z, y, len; + + LTC_ARGCHK(outlen != NULL); + + /* force to 32 bits */ + num &= 0xFFFFFFFFUL; + + /* get the number of bytes */ + z = 0; + y = num; + while (y) { + ++z; + y >>= 8; + } + + /* handle zero */ + if (z == 0) { + z = 1; + } + + /* we need a 0x02 to indicate it's INTEGER */ + len = 1; + + /* length byte */ + ++len; + + /* bytes in value */ + len += z; + + /* see if msb is set */ + len += (num&(1UL<<((z<<3) - 1))) ? 1 : 0; + + /* return length */ + *outlen = len; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/short_integer/der_length_short_integer.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/sub.mk new file mode 100644 index 0000000..fae1f08 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/short_integer/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_short_integer.c +srcs-y += der_encode_short_integer.c +srcs-y += der_length_short_integer.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/sub.mk new file mode 100644 index 0000000..b704c65 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/sub.mk @@ -0,0 +1,14 @@ +subdirs-y += bit +subdirs-y += boolean +subdirs-y += choice +subdirs-y += ia5 +subdirs-y += integer +subdirs-y += object_identifier +subdirs-y += octet +subdirs-y += printable_string +subdirs-y += sequence +subdirs-y += set +subdirs-y += short_integer +subdirs-y += utctime +subdirs-y += utf8 +subdirs-y += teletex_string diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_decode_teletex_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_decode_teletex_string.c new file mode 100644 index 0000000..a8eaecf --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_decode_teletex_string.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_teletex_string.c + ASN.1 DER, encode a teletex STRING +*/ + +#ifdef LTC_DER + +/** + Store a teletex STRING + @param in The DER encoded teletex STRING + @param inlen The size of the DER teletex STRING + @param out [out] The array of octets stored (one per char) + @param outlen [in/out] The number of octets stored + @return CRYPT_OK if successful +*/ +int der_decode_teletex_string(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + int t; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x14 */ + if ((in[0] & 0x1F) != 0x14) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + /* is it too long? */ + if (len > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* read the data */ + for (y = 0; y < len; y++) { + t = der_teletex_value_decode(in[x++]); + if (t == -1) { + return CRYPT_INVALID_ARG; + } + out[y] = t; + } + + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_length_teletex_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_length_teletex_string.c new file mode 100644 index 0000000..7435e72 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/der_length_teletex_string.c @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_teletex_string.c + ASN.1 DER, get length of teletex STRING +*/ + +#ifdef LTC_DER + +static const struct { + int code, value; +} teletex_table[] = { +{ '\0', 0 }, +{ '\a', 7 }, +{ '\b', 8 }, +{ '\t', 9 }, +{ '\n', 10 }, +{ '\v', 11 }, +{ '\f', 12 }, +{ '\r', 13 }, +{ ' ', 32 }, +{ '!', 33 }, +{ '"', 34 }, +{ '%', 37 }, +{ '&', 38 }, +{ '\'', 39 }, +{ '(', 40 }, +{ ')', 41 }, +{ '+', 43 }, +{ ',', 44 }, +{ '-', 45 }, +{ '.', 46 }, +{ '/', 47 }, +{ '0', 48 }, +{ '1', 49 }, +{ '2', 50 }, +{ '3', 51 }, +{ '4', 52 }, +{ '5', 53 }, +{ '6', 54 }, +{ '7', 55 }, +{ '8', 56 }, +{ '9', 57 }, +{ ':', 58 }, +{ ';', 59 }, +{ '<', 60 }, +{ '=', 61 }, +{ '>', 62 }, +{ '?', 63 }, +{ '@', 64 }, +{ 'A', 65 }, +{ 'B', 66 }, +{ 'C', 67 }, +{ 'D', 68 }, +{ 'E', 69 }, +{ 'F', 70 }, +{ 'G', 71 }, +{ 'H', 72 }, +{ 'I', 73 }, +{ 'J', 74 }, +{ 'K', 75 }, +{ 'L', 76 }, +{ 'M', 77 }, +{ 'N', 78 }, +{ 'O', 79 }, +{ 'P', 80 }, +{ 'Q', 81 }, +{ 'R', 82 }, +{ 'S', 83 }, +{ 'T', 84 }, +{ 'U', 85 }, +{ 'V', 86 }, +{ 'W', 87 }, +{ 'X', 88 }, +{ 'Y', 89 }, +{ 'Z', 90 }, +{ '[', 91 }, +{ ']', 93 }, +{ '_', 95 }, +{ 'a', 97 }, +{ 'b', 98 }, +{ 'c', 99 }, +{ 'd', 100 }, +{ 'e', 101 }, +{ 'f', 102 }, +{ 'g', 103 }, +{ 'h', 104 }, +{ 'i', 105 }, +{ 'j', 106 }, +{ 'k', 107 }, +{ 'l', 108 }, +{ 'm', 109 }, +{ 'n', 110 }, +{ 'o', 111 }, +{ 'p', 112 }, +{ 'q', 113 }, +{ 'r', 114 }, +{ 's', 115 }, +{ 't', 116 }, +{ 'u', 117 }, +{ 'v', 118 }, +{ 'w', 119 }, +{ 'x', 120 }, +{ 'y', 121 }, +{ 'z', 122 }, +{ '|', 124 }, +{ ' ', 160 }, +{ 0xa1, 161 }, +{ 0xa2, 162 }, +{ 0xa3, 163 }, +{ '$', 164 }, +{ 0xa5, 165 }, +{ '#', 166 }, +{ 0xa7, 167 }, +{ 0xa4, 168 }, +{ 0xab, 171 }, +{ 0xb0, 176 }, +{ 0xb1, 177 }, +{ 0xb2, 178 }, +{ 0xb3, 179 }, +{ 0xd7, 180 }, +{ 0xb5, 181 }, +{ 0xb6, 182 }, +{ 0xb7, 183 }, +{ 0xf7, 184 }, +{ 0xbb, 187 }, +{ 0xbc, 188 }, +{ 0xbd, 189 }, +{ 0xbe, 190 }, +{ 0xbf, 191 }, +}; + +int der_teletex_char_encode(int c) +{ + int x; + for (x = 0; x < (int)(sizeof(teletex_table)/sizeof(teletex_table[0])); x++) { + if (teletex_table[x].code == c) { + return teletex_table[x].value; + } + } + return -1; +} + +int der_teletex_value_decode(int v) +{ + int x; + for (x = 0; x < (int)(sizeof(teletex_table)/sizeof(teletex_table[0])); x++) { + if (teletex_table[x].value == v) { + return teletex_table[x].code; + } + } + return -1; +} + +/** + Gets length of DER encoding of teletex STRING + @param octets The values you want to encode + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_teletex_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x; + + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(octets != NULL); + + /* scan string for validity */ + for (x = 0; x < noctets; x++) { + if (der_teletex_char_encode(octets[x]) == -1) { + return CRYPT_INVALID_ARG; + } + } + + if (noctets < 128) { + /* 16 LL DD DD DD ... */ + *outlen = 2 + noctets; + } else if (noctets < 256) { + /* 16 81 LL DD DD DD ... */ + *outlen = 3 + noctets; + } else if (noctets < 65536UL) { + /* 16 82 LL LL DD DD DD ... */ + *outlen = 4 + noctets; + } else if (noctets < 16777216UL) { + /* 16 83 LL LL LL DD DD DD ... */ + *outlen = 5 + noctets; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/sub.mk new file mode 100644 index 0000000..8f47f07 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/teletex_string/sub.mk @@ -0,0 +1,2 @@ +srcs-y += der_decode_teletex_string.c +srcs-y += der_length_teletex_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_decode_utctime.c b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_decode_utctime.c new file mode 100644 index 0000000..328051d --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_decode_utctime.c @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_utctime.c + ASN.1 DER, decode a UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +static int char_to_int(unsigned char x) +{ + switch (x) { + case '0': return 0; + case '1': return 1; + case '2': return 2; + case '3': return 3; + case '4': return 4; + case '5': return 5; + case '6': return 6; + case '7': return 7; + case '8': return 8; + case '9': return 9; + default: + return 100; + } + return 100; +} + +#define DECODE_V(y, max) \ + y = char_to_int(buf[x])*10 + char_to_int(buf[x+1]); \ + if (y >= max) return CRYPT_INVALID_PACKET; \ + x += 2; + +/** + Decodes a UTC time structure in DER format (reads all 6 valid encoding formats) + @param in Input buffer + @param inlen Length of input buffer in octets + @param out [out] Destination of UTC time structure + @return CRYPT_OK if successful +*/ +int der_decode_utctime(const unsigned char *in, unsigned long *inlen, + ltc_utctime *out) +{ + unsigned char buf[32]; + unsigned long x; + int y; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(inlen != NULL); + LTC_ARGCHK(out != NULL); + + /* check header */ + if (*inlen < 2UL || (in[1] >= sizeof(buf)) || ((in[1] + 2UL) > *inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* decode the string */ + for (x = 0; x < in[1]; x++) { + y = der_ia5_value_decode(in[x+2]); + if (y == -1) { + return CRYPT_INVALID_PACKET; + } + buf[x] = y; + } + *inlen = 2 + x; + + + /* possible encodings are +YYMMDDhhmmZ +YYMMDDhhmm+hh'mm' +YYMMDDhhmm-hh'mm' +YYMMDDhhmmssZ +YYMMDDhhmmss+hh'mm' +YYMMDDhhmmss-hh'mm' + + So let's do a trivial decode upto [including] mm + */ + + x = 0; + DECODE_V(out->YY, 100); + DECODE_V(out->MM, 13); + DECODE_V(out->DD, 32); + DECODE_V(out->hh, 24); + DECODE_V(out->mm, 60); + + /* clear timezone and seconds info */ + out->off_dir = out->off_hh = out->off_mm = out->ss = 0; + + /* now is it Z, +, - or 0-9 */ + if (buf[x] == 'Z') { + return CRYPT_OK; + } else if (buf[x] == '+' || buf[x] == '-') { + out->off_dir = (buf[x++] == '+') ? 0 : 1; + DECODE_V(out->off_hh, 24); + DECODE_V(out->off_mm, 60); + return CRYPT_OK; + } + + /* decode seconds */ + DECODE_V(out->ss, 60); + + /* now is it Z, +, - */ + if (buf[x] == 'Z') { + return CRYPT_OK; + } else if (buf[x] == '+' || buf[x] == '-') { + out->off_dir = (buf[x++] == '+') ? 0 : 1; + DECODE_V(out->off_hh, 24); + DECODE_V(out->off_mm, 60); + return CRYPT_OK; + } else { + return CRYPT_INVALID_PACKET; + } +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_decode_utctime.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c new file mode 100644 index 0000000..e22b294 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_utctime.c + ASN.1 DER, encode a UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +static const char *baseten = "0123456789"; + +#define STORE_V(y) \ + out[x++] = der_ia5_char_encode(baseten[(y/10) % 10]); \ + out[x++] = der_ia5_char_encode(baseten[y % 10]); + +/** + Encodes a UTC time structure in DER format + @param utctime The UTC time structure to encode + @param out The destination of the DER encoding of the UTC time structure + @param outlen [in/out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_encode_utctime(ltc_utctime *utctime, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, tmplen; + int err; + + LTC_ARGCHK(utctime != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = der_length_utctime(utctime, &tmplen)) != CRYPT_OK) { + return err; + } + if (tmplen > *outlen) { + *outlen = tmplen; + return CRYPT_BUFFER_OVERFLOW; + } + + /* store header */ + out[0] = 0x17; + + /* store values */ + x = 2; + STORE_V(utctime->YY); + STORE_V(utctime->MM); + STORE_V(utctime->DD); + STORE_V(utctime->hh); + STORE_V(utctime->mm); + STORE_V(utctime->ss); + + if (utctime->off_mm || utctime->off_hh) { + out[x++] = der_ia5_char_encode(utctime->off_dir ? '-' : '+'); + STORE_V(utctime->off_hh); + STORE_V(utctime->off_mm); + } else { + out[x++] = der_ia5_char_encode('Z'); + } + + /* store length */ + out[1] = (unsigned char)(x - 2); + + /* all good let's return */ + *outlen = x; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c new file mode 100644 index 0000000..055b726 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_utctime.c + ASN.1 DER, get length of UTCTIME, Tom St Denis +*/ + +#ifdef LTC_DER + +/** + Gets length of DER encoding of UTCTIME + @param utctime The UTC time structure to get the size of + @param outlen [out] The length of the DER encoding + @return CRYPT_OK if successful +*/ +int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen) +{ + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(utctime != NULL); + + if (utctime->off_hh == 0 && utctime->off_mm == 0) { + /* we encode as YYMMDDhhmmssZ */ + *outlen = 2 + 13; + } else { + /* we encode as YYMMDDhhmmss{+|-}hh'mm' */ + *outlen = 2 + 17; + } + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utctime/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/sub.mk new file mode 100644 index 0000000..afb3e1b --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utctime/sub.mk @@ -0,0 +1,3 @@ +srcs-y += der_decode_utctime.c +srcs-y += der_encode_utctime.c +srcs-y += der_length_utctime.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c new file mode 100644 index 0000000..6226dd5 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_decode_utf8_string.c + ASN.1 DER, encode a UTF8 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store a UTF8 STRING + @param in The DER encoded UTF8 STRING + @param inlen The size of the DER UTF8 STRING + @param out [out] The array of utf8s stored (one per char) + @param outlen [in/out] The number of utf8s stored + @return CRYPT_OK if successful +*/ +int der_decode_utf8_string(const unsigned char *in, unsigned long inlen, + wchar_t *out, unsigned long *outlen) +{ + wchar_t tmp; + unsigned long x, y, z, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* must have header at least */ + if (inlen < 2) { + return CRYPT_INVALID_PACKET; + } + + /* check for 0x0C */ + if ((in[0] & 0x1F) != 0x0C) { + return CRYPT_INVALID_PACKET; + } + x = 1; + + /* decode the length */ + if (in[x] & 0x80) { + /* valid # of bytes in length are 1,2,3 */ + y = in[x] & 0x7F; + if ((y == 0) || (y > 3) || ((x + y) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* read the length in */ + len = 0; + ++x; + while (y--) { + len = (len << 8) | in[x++]; + } + } else { + len = in[x++] & 0x7F; + } + + if (len + x > inlen) { + return CRYPT_INVALID_PACKET; + } + + /* proceed to decode */ + for (y = 0; x < inlen; ) { + /* get first byte */ + tmp = in[x++]; + + /* count number of bytes */ + for (z = 0; (tmp & 0x80) && (z <= 4); z++, tmp = (tmp << 1) & 0xFF); + + if (z > 4 || (x + (z - 1) > inlen)) { + return CRYPT_INVALID_PACKET; + } + + /* decode, grab upper bits */ + tmp >>= z; + + /* grab remaining bytes */ + if (z > 1) { --z; } + while (z-- != 0) { + if ((in[x] & 0xC0) != 0x80) { + return CRYPT_INVALID_PACKET; + } + tmp = (tmp << 6) | ((wchar_t)in[x++] & 0x3F); + } + + if (y > *outlen) { + *outlen = y; + return CRYPT_BUFFER_OVERFLOW; + } + out[y++] = tmp; + } + *outlen = y; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_encode_utf8_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_encode_utf8_string.c new file mode 100644 index 0000000..684f31b --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_encode_utf8_string.c @@ -0,0 +1,134 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_encode_utf8_string.c + ASN.1 DER, encode a UTF8 STRING, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Store an UTF8 STRING + @param in The array of UTF8 to store (one per wchar_t) + @param inlen The number of UTF8 to store + @param out [out] The destination for the DER encoded UTF8 STRING + @param outlen [in/out] The max size and resulting size of the DER UTF8 STRING + @return CRYPT_OK if successful +*/ +int der_encode_utf8_string(const wchar_t *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x, y, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* get the size */ + for (x = len = 0; x < inlen; x++) { + if (in[x] < 0 || in[x] > 0x1FFFF) { + return CRYPT_INVALID_ARG; + } + len += der_utf8_charsize(in[x]); + } + + if (len < 128) { + y = 2 + len; + } else if (len < 256) { + y = 3 + len; + } else if (len < 65536UL) { + y = 4 + len; + } else if (len < 16777216UL) { + y = 5 + len; + } else { + return CRYPT_INVALID_ARG; + } + + /* too big? */ + if (y > *outlen) { + *outlen = len; + return CRYPT_BUFFER_OVERFLOW; + } + + /* encode the header+len */ + x = 0; + out[x++] = 0x0C; + if (len < 128) { + out[x++] = (unsigned char)len; + } else if (len < 256) { + out[x++] = 0x81; + out[x++] = (unsigned char)len; + } else if (len < 65536UL) { + out[x++] = 0x82; + out[x++] = (unsigned char)((len>>8)&255); + out[x++] = (unsigned char)(len&255); + } else if (len < 16777216UL) { + out[x++] = 0x83; + out[x++] = (unsigned char)((len>>16)&255); + out[x++] = (unsigned char)((len>>8)&255); + out[x++] = (unsigned char)(len&255); + } else { + /* coverity[dead_error_line] */ + return CRYPT_INVALID_ARG; + } + + /* store UTF8 */ + for (y = 0; y < inlen; y++) { + switch (der_utf8_charsize(in[y])) { + case 1: out[x++] = (unsigned char)in[y]; break; + case 2: out[x++] = 0xC0 | ((in[y] >> 6) & 0x1F); out[x++] = 0x80 | (in[y] & 0x3F); break; + case 3: out[x++] = 0xE0 | ((in[y] >> 12) & 0x0F); out[x++] = 0x80 | ((in[y] >> 6) & 0x3F); out[x++] = 0x80 | (in[y] & 0x3F); break; + case 4: out[x++] = 0xF0 | ((in[y] >> 18) & 0x07); out[x++] = 0x80 | ((in[y] >> 12) & 0x3F); out[x++] = 0x80 | ((in[y] >> 6) & 0x3F); out[x++] = 0x80 | (in[y] & 0x3F); break; + default: break; + } + } + + /* retun length */ + *outlen = x; + + return CRYPT_OK; +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_length_utf8_string.c b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_length_utf8_string.c new file mode 100644 index 0000000..17dd672 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_length_utf8_string.c @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file der_length_utf8_string.c + ASN.1 DER, get length of UTF8 STRING, Tom St Denis +*/ + +#ifdef LTC_DER + +/** Return the size in bytes of a UTF-8 character + @param c The UTF-8 character to measure + @return The size in bytes +*/ +unsigned long der_utf8_charsize(const wchar_t c) +{ + if (c <= 0x7F) { + return 1; + } else if (c <= 0x7FF) { + return 2; + } else if (c <= 0xFFFF) { + return 3; + } else { + return 4; + } +} + +/** + Gets length of DER encoding of UTF8 STRING + @param in The characters to measure the length of + @param noctets The number of octets in the string to encode + @param outlen [out] The length of the DER encoding for the given string + @return CRYPT_OK if successful +*/ +int der_length_utf8_string(const wchar_t *in, unsigned long noctets, unsigned long *outlen) +{ + unsigned long x, len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(outlen != NULL); + + len = 0; + for (x = 0; x < noctets; x++) { + if (in[x] < 0 || in[x] > 0x10FFFF) { + return CRYPT_INVALID_ARG; + } + len += der_utf8_charsize(in[x]); + } + + if (len < 128) { + /* 0C LL DD DD DD ... */ + *outlen = 2 + len; + } else if (len < 256) { + /* 0C 81 LL DD DD DD ... */ + *outlen = 3 + len; + } else if (len < 65536UL) { + /* 0C 82 LL LL DD DD DD ... */ + *outlen = 4 + len; + } else if (len < 16777216UL) { + /* 0C 83 LL LL LL DD DD DD ... */ + *outlen = 5 + len; + } else { + return CRYPT_INVALID_ARG; + } + + return CRYPT_OK; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utf8/der_length_utf8_string.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2006/12/28 01:27:24 $ */ diff --git a/core/lib/libtomcrypt/src/pk/asn1/der/utf8/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/sub.mk new file mode 100644 index 0000000..3538929 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/der/utf8/sub.mk @@ -0,0 +1,4 @@ +cflags-remove-y += -Wextra +srcs-y += der_decode_utf8_string.c +srcs-y += der_encode_utf8_string.c +srcs-y += der_length_utf8_string.c diff --git a/core/lib/libtomcrypt/src/pk/asn1/sub.mk b/core/lib/libtomcrypt/src/pk/asn1/sub.mk new file mode 100644 index 0000000..c93e1f1 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/asn1/sub.mk @@ -0,0 +1 @@ +subdirs-y += der diff --git a/core/lib/libtomcrypt/src/pk/dh/dh.c b/core/lib/libtomcrypt/src/pk/dh/dh.c new file mode 100644 index 0000000..d97f704 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dh/dh.c @@ -0,0 +1,217 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * Copyright (c) 2014, STMicroelectronics International N.V. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <tomcrypt.h> + +#ifdef LTC_LINARO_FIX_DH + +#include <stdint.h> +/* + * Make a DH key [private key pair] + * @param prng An active PRNG state + * @param wprng The index for the PRNG you desire to use + * @param keysize The key size (octets) desired of the private key + * @param q If not null, then the private key is in the range + * [2, q-2] where q is called the subprime + * @param xbits If not 0, then the private key has 'xbits' bits + * @note The private key must always be less than p-1 + * @param key [in/out] Where the newly created DH key will be stored + * g and p are provided as input in the key + * type, x and y are output of this function + * @return CRYPT_OK if successful, note: on error all allocated memory will be + * freed automatically. +*/ + +int dh_make_key(prng_state *prng, int wprng, void *q, int xbits, dh_key *key) +{ + const int limit = 500; /* number of tries */ + int err, i; + int key_size = 0; /* max key size, in bytes */ + int key_size_p = 0; /* key size of p */ + int key_size_q = 0; /* key size of p */ + void *arg_mod; + uint8_t *buf = 0; /* intermediate buffer to have a raw random */ + int found = 0; + + /* + * Check the arguments + */ + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(key->g != NULL); + LTC_ARGCHK(key->p != NULL); + err = prng_is_valid(wprng); + if (err != CRYPT_OK) + return err; + + /* + * Set the key size and check constraints + */ + if (xbits) { + LTC_ARGCHK((xbits % 8) == 0); + key_size = xbits / 8; + } + key_size_p = mp_unsigned_bin_size(key->p); + if (q) + key_size_q = mp_unsigned_bin_size(q); + if (key_size) { + /* check the constraints */ + LTC_ARGCHK(key_size <= key_size_p); + LTC_ARGCHK((q == NULL) || (key_size <= key_size_q)); + } else { + if (q) + key_size = MIN(key_size_p, key_size_q); + else + key_size =key_size_p; + } + + /* Set the argument we will make the modulo against to */ + if ((q != NULL) && (key_size_q < key_size_p)) + arg_mod = q; + else + arg_mod = key->p; + + /* initialize the key */ + key->x = NULL; + key->y = NULL; + err = mp_init_multi(&key->x, &key->y, NULL); + if (err != CRYPT_OK) + goto error; + + /* Initialize the buffer used to store the random number */ + buf = XMALLOC(key_size); + if (buf == NULL) { + err = CRYPT_MEM; + goto error; + } + + for (i = 0; (i < limit) && (!found); i++) { + /* generate the private key in a raw-buffer */ + if (prng_descriptor[wprng]->read(buf, key_size, prng) != + (unsigned long)key_size) { + err = CRYPT_ERROR_READPRNG; + goto error; + } + + /* make sure it is on the right number of bits */ + if (xbits) + buf[0] |= 0x80; + + /* transform it as a Big Number */ + err = mp_read_unsigned_bin(key->x, buf, key_size); + if (err != CRYPT_OK) + goto error; + + /* + * Transform it as a Big Number compatible with p and q + */ + err = mp_read_unsigned_bin(key->y, buf, key_size); + if (err != CRYPT_OK) + goto error; + err = mp_mod(key->y, arg_mod, key->x); + if (err != CRYPT_OK) + goto error; + + /* + * Check the constraints + * - x < p is ok by construction + * - x < q-1: + * - x contains xbits + */ + if (xbits) { + if (mp_count_bits(key->x) != xbits) + continue; + } + + /* we found a suitable private key key->x */ + found = 1; + } + + if (!found) { + /* key is not found */ + err = CRYPT_PK_NOT_FOUND; + goto error; + } + + /* generate the public key key->y */ + err = mp_exptmod(key->g, key->x, key->p, key->y); + if (err != CRYPT_OK) + goto error; + + /* no error */ + err = CRYPT_OK; + +error: + if (err != CRYPT_OK) + mp_clear_multi(key->x, key->y, NULL); + if (buf) + XFREE(buf); + + return err; +} + +/* + * Free the allocated ram for a DH key + * @param key The key which you wish to free + */ +void dh_free(dh_key *key) +{ + /* + * g and p are not cleared on purpose as they are provided when + * generating the key + */ + if (key->x) { + mp_clear(key->x); + key->x = NULL; + } + if (key->y) { + mp_clear(key->y); + key->y = NULL; + } +} + +/* + * Create a DH shared secret. + * @param private_key The private DH key in the pair + * @param public_key The public DH key in the pair, as a big number + * @param secret The secret (as a big number) + * @return CRYPT_OK if successful + */ +int dh_shared_secret(dh_key *private_key, void *public_key, void *secret) +{ + LTC_ARGCHK(private_key != NULL); + LTC_ARGCHK(public_key != NULL); + LTC_ARGCHK(secret != NULL); + + /* types valid? */ + if (private_key->type != PK_PRIVATE) + return CRYPT_PK_NOT_PRIVATE; + + return mp_exptmod(public_key, private_key->x, private_key->p, secret); +} + +#endif diff --git a/core/lib/libtomcrypt/src/pk/dh/sub.mk b/core/lib/libtomcrypt/src/pk/dh/sub.mk new file mode 100644 index 0000000..7c36ef1 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dh/sub.mk @@ -0,0 +1,2 @@ +srcs-y += dh.c +cflags-dh.c-y += -Wno-unused-variable diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_decrypt_key.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_decrypt_key.c new file mode 100644 index 0000000..fde55da --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_decrypt_key.c @@ -0,0 +1,165 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_decrypt_key.c + DSA Crypto, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Decrypt an DSA encrypted key + @param in The ciphertext + @param inlen The length of the ciphertext (octets) + @param out [out] The plaintext + @param outlen [in/out] The max size and resulting size of the plaintext + @param key The corresponding private DSA key + @return CRYPT_OK if successful +*/ +int dsa_decrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + dsa_key *key) +{ + unsigned char *skey, *expt; + void *g_pub; + unsigned long x, y, hashOID[32]; + int hash, err; + ltc_asn1_list decode[3]; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* right key type? */ + if (key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* decode to find out hash */ + LTC_SET_ASN1(decode, 0, LTC_ASN1_OBJECT_IDENTIFIER, hashOID, sizeof(hashOID)/sizeof(hashOID[0])); + + if ((err = der_decode_sequence(in, inlen, decode, 1)) != CRYPT_OK) { + return err; + } + + hash = find_hash_oid(hashOID, decode[0].size); + if (hash_is_valid(hash) != CRYPT_OK) { + return CRYPT_INVALID_PACKET; + } + + /* we now have the hash! */ + + if ((err = mp_init(&g_pub)) != CRYPT_OK) { + return err; + } + + /* allocate memory */ + expt = XMALLOC(mp_unsigned_bin_size(key->p) + 1); + skey = XMALLOC(MAXBLOCKSIZE); + if (expt == NULL || skey == NULL) { + if (expt != NULL) { + XFREE(expt); + } + if (skey != NULL) { + XFREE(skey); + } + mp_clear(g_pub); + return CRYPT_MEM; + } + + LTC_SET_ASN1(decode, 1, LTC_ASN1_INTEGER, g_pub, 1UL); + LTC_SET_ASN1(decode, 2, LTC_ASN1_OCTET_STRING, skey, MAXBLOCKSIZE); + + /* read the structure in now */ + if ((err = der_decode_sequence(in, inlen, decode, 3)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* make shared key */ + x = mp_unsigned_bin_size(key->p) + 1; + if ((err = dsa_shared_secret(key->x, g_pub, key, expt, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + + y = MIN(mp_unsigned_bin_size(key->p) + 1, MAXBLOCKSIZE); + if ((err = hash_memory(hash, expt, x, expt, &y)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* ensure the hash of the shared secret is at least as big as the encrypt itself */ + if (decode[2].size > y) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* avoid buffer overflow */ + if (*outlen < decode[2].size) { + *outlen = decode[2].size; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* Decrypt the key */ + for (x = 0; x < decode[2].size; x++) { + out[x] = expt[x] ^ skey[x]; + } + *outlen = x; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(expt, mp_unsigned_bin_size(key->p) + 1); + zeromem(skey, MAXBLOCKSIZE); +#endif + + XFREE(expt); + XFREE(skey); + + mp_clear(g_pub); + + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_decrypt_key.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_encrypt_key.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_encrypt_key.c new file mode 100644 index 0000000..d69a624 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_encrypt_key.c @@ -0,0 +1,158 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_encrypt_key.c + DSA Crypto, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Encrypt a symmetric key with DSA + @param in The symmetric key you want to encrypt + @param inlen The length of the key to encrypt (octets) + @param out [out] The destination for the ciphertext + @param outlen [in/out] The max size and resulting size of the ciphertext + @param prng An active PRNG state + @param wprng The index of the PRNG you wish to use + @param hash The index of the hash you want to use + @param key The DSA key you want to encrypt to + @return CRYPT_OK if successful +*/ +int dsa_encrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + prng_state *prng, int wprng, int hash, + dsa_key *key) +{ + unsigned char *expt, *skey; + void *g_pub, *g_priv; + unsigned long x, y; + int err, qbits; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* check that wprng/cipher/hash are not invalid */ + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + if (inlen > hash_descriptor[hash]->hashsize) { + return CRYPT_INVALID_HASH; + } + + /* make a random key and export the public copy */ + if ((err = mp_init_multi(&g_pub, &g_priv, NULL)) != CRYPT_OK) { + return err; + } + + expt = XMALLOC(mp_unsigned_bin_size(key->p) + 1); + skey = XMALLOC(MAXBLOCKSIZE); + if (expt == NULL || skey == NULL) { + if (expt != NULL) { + XFREE(expt); + } + if (skey != NULL) { + XFREE(skey); + } + mp_clear_multi(g_pub, g_priv, NULL); + return CRYPT_MEM; + } + + /* make a random g_priv, g_pub = g^x pair */ + qbits = mp_count_bits(key->q); + do { + if ((err = rand_bn_bits(g_priv, qbits, prng, wprng)) != CRYPT_OK) { + goto LBL_ERR; + } + /* private key x should be from range: 1 <= x <= q-1 (see FIPS 186-4 B.1.2) */ + } while (mp_cmp_d(g_priv, 0) != LTC_MP_GT || mp_cmp(g_priv, key->q) != LTC_MP_LT); + + /* compute y */ + if ((err = mp_exptmod(key->g, g_priv, key->p, g_pub)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* make random key */ + x = mp_unsigned_bin_size(key->p) + 1; + if ((err = dsa_shared_secret(g_priv, key->y, key, expt, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + + y = MAXBLOCKSIZE; + if ((err = hash_memory(hash, expt, x, skey, &y)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* Encrypt key */ + for (x = 0; x < inlen; x++) { + skey[x] ^= in[x]; + } + + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_OBJECT_IDENTIFIER, hash_descriptor[hash]->OIDlen, hash_descriptor[hash]->OID, + LTC_ASN1_INTEGER, 1UL, g_pub, + LTC_ASN1_OCTET_STRING, inlen, skey, + LTC_ASN1_EOL, 0UL, NULL); + +LBL_ERR: +#ifdef LTC_CLEAN_STACK + /* clean up */ + zeromem(expt, mp_unsigned_bin_size(key->p) + 1); + zeromem(skey, MAXBLOCKSIZE); +#endif + + XFREE(skey); + XFREE(expt); + + mp_clear_multi(g_pub, g_priv, NULL); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_encrypt_key.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_export.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_export.c new file mode 100644 index 0000000..9424de4 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_export.c @@ -0,0 +1,145 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_export.c + DSA implementation, export key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Export a DSA key to a binary packet + @param out [out] Where to store the packet + @param outlen [in/out] The max size and resulting size of the packet + @param type The type of key to export (PK_PRIVATE or PK_PUBLIC) + @param key The key to export + @return CRYPT_OK if successful +*/ +int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key) +{ + unsigned long zero=0; + int err, std; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + std = type & PK_STD; + type &= ~PK_STD; + + /* can we store the static header? */ + if (type == PK_PRIVATE && key->type != PK_PRIVATE) { + return CRYPT_PK_TYPE_MISMATCH; + } + + if (type != PK_PUBLIC && type != PK_PRIVATE) { + return CRYPT_INVALID_ARG; + } + + if (type == PK_PRIVATE) { + if (std) { + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_INTEGER, 1UL, key->x, + LTC_ASN1_EOL, 0UL, NULL); + } + else { + unsigned char flags[1]; + flags[0] = 1; + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_INTEGER, 1UL, key->x, + LTC_ASN1_EOL, 0UL, NULL); + } + } else { + if (std) { + unsigned long tmplen = (mp_count_bits(key->y) / 8) + 8; + unsigned char* tmp = XMALLOC(tmplen); + ltc_asn1_list int_list[3]; + + if (tmp == NULL) { + return CRYPT_MEM; + } + + err = der_encode_integer(key->y, tmp, &tmplen); + if (err != CRYPT_OK) { + goto error; + } + + LTC_SET_ASN1(int_list, 0, LTC_ASN1_INTEGER, key->p, 1UL); + LTC_SET_ASN1(int_list, 1, LTC_ASN1_INTEGER, key->q, 1UL); + LTC_SET_ASN1(int_list, 2, LTC_ASN1_INTEGER, key->g, 1UL); + + err = der_encode_subject_public_key_info(out, outlen, PKA_DSA, tmp, + tmplen, LTC_ASN1_SEQUENCE, int_list, + sizeof(int_list) / sizeof(int_list[0])); + +error: + XFREE(tmp); + return err; + } + else { + unsigned char flags[1]; + flags[0] = 0; + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_EOL, 0UL, NULL); + } + } +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_export.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_free.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_free.c new file mode 100644 index 0000000..ca5b887 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_free.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_free.c + DSA implementation, free a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Free a DSA key + @param key The key to free from memory +*/ +void dsa_free(dsa_key *key) +{ + LTC_ARGCHKVD(key != NULL); + mp_clear_multi(key->g, key->q, key->p, key->x, key->y, NULL); +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_free.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_import.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_import.c new file mode 100644 index 0000000..83c8ce5 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_import.c @@ -0,0 +1,164 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_import.c + DSA implementation, import a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Import a DSA key + @param in The binary packet to import from + @param inlen The length of the binary packet + @param key [out] Where to store the imported key + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +int dsa_import(const unsigned char *in, unsigned long inlen, dsa_key *key) +{ + int err; + unsigned long zero = 0; + unsigned char* tmpbuf = NULL; + unsigned char flags[1]; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(ltc_mp.name != NULL); + + /* init key */ + if (mp_init_multi(&key->p, &key->g, &key->q, &key->x, &key->y, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* try to match the old libtomcrypt format */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_EOL, 0UL, NULL)) == CRYPT_OK) { + /* private key */ + if (flags[0]) { + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_INTEGER, 1UL, key->x, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + key->type = PK_PRIVATE; + goto LBL_OK; + } + /* public key */ + else { + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + key->type = PK_PUBLIC; + goto LBL_OK; + } + } + /* get key type */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->g, + LTC_ASN1_INTEGER, 1UL, key->y, + LTC_ASN1_INTEGER, 1UL, key->x, + LTC_ASN1_EOL, 0UL, NULL)) == CRYPT_OK) { + + key->type = PK_PRIVATE; + } else { /* public */ + ltc_asn1_list params[3]; + unsigned long tmpbuf_len = MAX_RSA_SIZE*8; + + LTC_SET_ASN1(params, 0, LTC_ASN1_INTEGER, key->p, 1UL); + LTC_SET_ASN1(params, 1, LTC_ASN1_INTEGER, key->q, 1UL); + LTC_SET_ASN1(params, 2, LTC_ASN1_INTEGER, key->g, 1UL); + + tmpbuf = XCALLOC(1, tmpbuf_len); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + err = der_decode_subject_public_key_info(in, inlen, + PKA_DSA, tmpbuf, &tmpbuf_len, + LTC_ASN1_SEQUENCE, params, 3); + if (err != CRYPT_OK) { + goto LBL_ERR; + } + + if ((err=der_decode_integer(tmpbuf, tmpbuf_len, key->y)) != CRYPT_OK) { + goto LBL_ERR; + } + + XFREE(tmpbuf); + key->type = PK_PUBLIC; + } + +LBL_OK: + key->qord = mp_unsigned_bin_size(key->q); + + if (key->qord >= LTC_MDSA_MAX_GROUP || key->qord <= 15 || + (unsigned long)key->qord >= mp_unsigned_bin_size(key->p) || (mp_unsigned_bin_size(key->p) - key->qord) >= LTC_MDSA_DELTA) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + return CRYPT_OK; +LBL_ERR: + XFREE(tmpbuf); + mp_clear_multi(key->p, key->g, key->q, key->x, key->y, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_import.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_make_key.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_make_key.c new file mode 100644 index 0000000..1b02db8 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_make_key.c @@ -0,0 +1,295 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_make_key.c + DSA implementation, generate a DSA key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Create DSA parameters + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param group_size Size of the multiplicative group (octets) + @param modulus_size Size of the modulus (octets) + @param p [out] bignum where generated 'p' is stored (must be initialized by caller) + @param q [out] bignum where generated 'q' is stored (must be initialized by caller) + @param g [out] bignum where generated 'g' is stored (must be initialized by caller) + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +static int dsa_make_params(prng_state *prng, int wprng, int group_size, int modulus_size, void *p, void *q, void *g) +{ + unsigned long L, N, n, outbytes, seedbytes, counter, j, i; + int err, res, mr_tests_q, mr_tests_p, found_p, found_q, hash; + unsigned char *wbuf, *sbuf, digest[MAXBLOCKSIZE]; + void *t2L1, *t2N1, *t2q, *t2seedlen, *U, *W, *X, *c, *h, *e, *seedinc; + + /* check size */ + if (group_size >= LTC_MDSA_MAX_GROUP || group_size < 1 || group_size >= modulus_size) { + return CRYPT_INVALID_ARG; + } + + /* FIPS-186-4 A.1.1.2 Generation of the Probable Primes p and q Using an Approved Hash Function + * + * L = The desired length of the prime p (in bits e.g. L = 1024) + * N = The desired length of the prime q (in bits e.g. N = 160) + * seedlen = The desired bit length of the domain parameter seed; seedlen shallbe equal to or greater than N + * outlen = The bit length of Hash function + * + * 1. Check that the (L, N) + * 2. If (seedlen <N), then return INVALID. + * 3. n = ceil(L / outlen) - 1 + * 4. b = L- 1 - (n * outlen) + * 5. domain_parameter_seed = an arbitrary sequence of seedlen bits + * 6. U = Hash (domain_parameter_seed) mod 2^(N-1) + * 7. q = 2^(N-1) + U + 1 - (U mod 2) + * 8. Test whether or not q is prime as specified in Appendix C.3 + * 9. If qis not a prime, then go to step 5. + * 10. offset = 1 + * 11. For counter = 0 to (4L- 1) do { + * For j=0 to n do { + * Vj = Hash ((domain_parameter_seed+ offset + j) mod 2^seedlen + * } + * W = V0 + (V1 *2^outlen) + ... + (Vn-1 * 2^((n-1) * outlen)) + ((Vn mod 2^b) * 2^(n * outlen)) + * X = W + 2^(L-1) Comment: 0 <= W < 2^(L-1); hence 2^(L-1) <= X < 2^L + * c = X mod 2*q + * p = X - (c - 1) Comment: p ~ 1 (mod 2*q) + * If (p >= 2^(L-1)) { + * Test whether or not p is prime as specified in Appendix C.3. + * If p is determined to be prime, then return VALID and the values of p, qand (optionally) the values of domain_parameter_seed and counter + * } + * offset = offset + n + 1 Comment: Increment offset + * } + */ + + seedbytes = group_size; + L = modulus_size * 8; + N = group_size * 8; + + /* M-R tests (when followed by one Lucas test) according FIPS-186-4 - Appendix C.3 - table C.1 */ + mr_tests_p = (L <= 2048) ? 3 : 2; + if (N <= 160) { mr_tests_q = 19; } + else if (N <= 224) { mr_tests_q = 24; } + else { mr_tests_q = 27; } + + if (N <= 256) { + hash = register_hash(&sha256_desc); + } + else if (N <= 384) { + hash = register_hash(&sha384_desc); + } + else if (N <= 512) { + hash = register_hash(&sha512_desc); + } + else { + return CRYPT_INVALID_ARG; /* group_size too big */ + } + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { return err; } + outbytes = hash_descriptor[hash]->hashsize; + + n = ((L + outbytes*8 - 1) / (outbytes*8)) - 1; + + if ((wbuf = XMALLOC((n+1)*outbytes)) == NULL) { err = CRYPT_MEM; goto cleanup3; } + if ((sbuf = XMALLOC(seedbytes)) == NULL) { err = CRYPT_MEM; goto cleanup2; } + + err = mp_init_multi(&t2L1, &t2N1, &t2q, &t2seedlen, &U, &W, &X, &c, &h, &e, &seedinc, NULL); + if (err != CRYPT_OK) { goto cleanup1; } + + if ((err = mp_2expt(t2L1, L-1)) != CRYPT_OK) { goto cleanup; } + /* t2L1 = 2^(L-1) */ + if ((err = mp_2expt(t2N1, N-1)) != CRYPT_OK) { goto cleanup; } + /* t2N1 = 2^(N-1) */ + if ((err = mp_2expt(t2seedlen, seedbytes*8)) != CRYPT_OK) { goto cleanup; } + /* t2seedlen = 2^seedlen */ + + for(found_p=0; !found_p;) { + /* q */ + for(found_q=0; !found_q;) { + if (prng_descriptor[wprng]->read(sbuf, seedbytes, prng) != seedbytes) { err = CRYPT_ERROR_READPRNG; goto cleanup; } + i = outbytes; + if ((err = hash_memory(hash, sbuf, seedbytes, digest, &i)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_read_unsigned_bin(U, digest, outbytes)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_mod(U, t2N1, U)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_add(t2N1, U, q)) != CRYPT_OK) { goto cleanup; } + if (!mp_isodd(q)) mp_add_d(q, 1, q); + if ((err = mp_prime_is_prime(q, mr_tests_q, &res)) != CRYPT_OK) { goto cleanup; } /* XXX-TODO rounds are ignored; no Lucas test */ + if (res == LTC_MP_YES) found_q = 1; + } + + /* p */ + if ((err = mp_read_unsigned_bin(seedinc, sbuf, seedbytes)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_add(q, q, t2q)) != CRYPT_OK) { goto cleanup; } + for(counter=0; counter < 4*L && !found_p; counter++) { + for(j=0; j<=n; j++) { + if ((err = mp_add_d(seedinc, 1, seedinc)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_mod(seedinc, t2seedlen, seedinc)) != CRYPT_OK) { goto cleanup; } + /* seedinc = (seedinc+1) % 2^seed_bitlen */ + if ((i = mp_unsigned_bin_size(seedinc)) > seedbytes) { err = CRYPT_INVALID_ARG; goto cleanup; } + zeromem(sbuf, seedbytes); + if ((err = mp_to_unsigned_bin(seedinc, sbuf + seedbytes-i)) != CRYPT_OK) { goto cleanup; } + i = outbytes; + err = hash_memory(hash, sbuf, seedbytes, wbuf+(n-j)*outbytes, &i); + if (err != CRYPT_OK) { goto cleanup; } + } + if ((err = mp_read_unsigned_bin(W, wbuf, (n+1)*outbytes)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_mod(W, t2L1, W)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_add(W, t2L1, X)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_mod(X, t2q, c)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub_d(c, 1, p)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub(X, p, p)) != CRYPT_OK) { goto cleanup; } + if (mp_cmp(p, t2L1) != LTC_MP_LT) { + /* p >= 2^(L-1) */ + if ((err = mp_prime_is_prime(p, mr_tests_p, &res)) != CRYPT_OK) { goto cleanup; } /* XXX-TODO rounds are ignored; no Lucas test */ + if (res == LTC_MP_YES) { + found_p = 1; + } + } + } + } + + /* FIPS-186-4 A.2.1 Unverifiable Generation of the Generator g + * 1. e = (p - 1)/q + * 2. h = any integer satisfying: 1 < h < (p - 1) + * h could be obtained from a random number generator or from a counter that changes after each use + * 3. g = h^e mod p + * 4. if (g == 1), then go to step 2. + * + */ + + if ((err = mp_sub_d(p, 1, e)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_div(e, q, e, c)) != CRYPT_OK) { goto cleanup; } + /* e = (p - 1)/q */ + i = mp_count_bits(p); + do { + do { + if ((err = rand_bn_bits(h, i, prng, wprng)) != CRYPT_OK) { goto cleanup; } + } while (mp_cmp(h, p) != LTC_MP_LT || mp_cmp_d(h, 2) != LTC_MP_GT); + if ((err = mp_sub_d(h, 1, h)) != CRYPT_OK) { goto cleanup; } + /* h is randon and 1 < h < (p-1) */ + if ((err = mp_exptmod(h, e, p, g)) != CRYPT_OK) { goto cleanup; } + } while (mp_cmp_d(g, 1) == LTC_MP_EQ); + + err = CRYPT_OK; +cleanup: + mp_clear_multi(t2L1, t2N1, t2q, t2seedlen, U, W, X, c, h, e, seedinc, NULL); +cleanup1: + XFREE(sbuf); +cleanup2: + XFREE(wbuf); +cleanup3: + return err; +} + +/** + Create a DSA key (with given params) + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param group_size Size of the multiplicative group (octets) + @param modulus_size Size of the modulus (octets) + @param key [out] Where to store the created key + @param p_hex Hexadecimal string 'p' + @param q_hex Hexadecimal string 'q' + @param g_hex Hexadecimal string 'g' + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +static int dsa_make_key_ex(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key, char* p_hex, char* q_hex, char* g_hex) +{ + int err, qbits; + + LTC_ARGCHK(key != NULL); + + /* init mp_ints */ + if ((err = mp_init_multi(&key->g, &key->q, &key->p, &key->x, &key->y, NULL)) != CRYPT_OK) { + return err; + } + + if (p_hex == NULL || q_hex == NULL || g_hex == NULL) { + /* generate params */ + err = dsa_make_params(prng, wprng, group_size, modulus_size, key->p, key->q, key->g); + if (err != CRYPT_OK) { goto cleanup; } + } + else { + /* read params */ + if ((err = mp_read_radix(key->p, p_hex, 16)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_read_radix(key->q, q_hex, 16)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_read_radix(key->g, g_hex, 16)) != CRYPT_OK) { goto cleanup; } + /* XXX-TODO maybe do some validity check for p, q, g */ + } + + /* so now we have our DH structure, generator g, order q, modulus p + Now we need a random exponent [mod q] and it's power g^x mod p + */ + qbits = mp_count_bits(key->q); + do { + if ((err = rand_bn_bits(key->x, qbits, prng, wprng)) != CRYPT_OK) { goto cleanup; } + /* private key x should be from range: 1 <= x <= q-1 (see FIPS 186-4 B.1.2) */ + } while (mp_cmp_d(key->x, 0) != LTC_MP_GT || mp_cmp(key->x, key->q) != LTC_MP_LT); + if ((err = mp_exptmod(key->g, key->x, key->p, key->y)) != CRYPT_OK) { goto cleanup; } + key->type = PK_PRIVATE; + key->qord = group_size; + + return CRYPT_OK; + +cleanup: + mp_clear_multi(key->g, key->q, key->p, key->x, key->y, NULL); + return err; +} + +/** + Create a DSA key + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param group_size Size of the multiplicative group (octets) + @param modulus_size Size of the modulus (octets) + @param key [out] Where to store the created key + @return CRYPT_OK if successful, upon error this function will free all allocated memory +*/ +int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key) +{ + return dsa_make_key_ex(prng, wprng, group_size, modulus_size, key, NULL, NULL, NULL); +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_make_key.c,v $ */ +/* $Revision: 1.12 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_shared_secret.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_shared_secret.c new file mode 100644 index 0000000..449af93 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_shared_secret.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_shared_secret.c + DSA Crypto, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Create a DSA shared secret between two keys + @param private_key The private DSA key (the exponent) + @param base The base of the exponentiation (allows this to be used for both encrypt and decrypt) + @param public_key The public key + @param out [out] Destination of the shared secret + @param outlen [in/out] The max size and resulting size of the shared secret + @return CRYPT_OK if successful +*/ +int dsa_shared_secret(void *private_key, void *base, + dsa_key *public_key, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x; + void *res; + int err; + + LTC_ARGCHK(private_key != NULL); + LTC_ARGCHK(public_key != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* make new point */ + if ((err = mp_init(&res)) != CRYPT_OK) { + return err; + } + + if ((err = mp_exptmod(base, private_key, public_key->p, res)) != CRYPT_OK) { + mp_clear(res); + return err; + } + + x = (unsigned long)mp_unsigned_bin_size(res); + if (*outlen < x) { + *outlen = x; + err = CRYPT_BUFFER_OVERFLOW; + goto done; + } + zeromem(out, x); + if ((err = mp_to_unsigned_bin(res, out + (x - mp_unsigned_bin_size(res)))) != CRYPT_OK) { goto done; } + + err = CRYPT_OK; + *outlen = x; +done: + mp_clear(res); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_shared_secret.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_sign_hash.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_sign_hash.c new file mode 100644 index 0000000..0c89967 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_sign_hash.c @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_sign_hash.c + DSA implementation, sign a hash, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Sign a hash with DSA + @param in The hash to sign + @param inlen The length of the hash to sign + @param r The "r" integer of the signature (caller must initialize with mp_init() first) + @param s The "s" integer of the signature (caller must initialize with mp_init() first) + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param key A private DSA key + @return CRYPT_OK if successful +*/ +int dsa_sign_hash_raw(const unsigned char *in, unsigned long inlen, + void *r, void *s, + prng_state *prng, int wprng, dsa_key *key) +{ + void *k, *kinv, *tmp; + unsigned char *buf; + int err, qbits; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(key != NULL); + + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + if (key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* check group order size */ + if (key->qord >= LTC_MDSA_MAX_GROUP) { + return CRYPT_INVALID_ARG; + } + + buf = XMALLOC(LTC_MDSA_MAX_GROUP); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* Init our temps */ + if ((err = mp_init_multi(&k, &kinv, &tmp, NULL)) != CRYPT_OK) { goto ERRBUF; } + + qbits = mp_count_bits(key->q); +retry: + + do { + /* gen random k */ + if ((err = rand_bn_bits(k, qbits, prng, wprng)) != CRYPT_OK) { goto error; } + + /* k should be from range: 1 <= k <= q-1 (see FIPS 186-4 B.2.2) */ + if (mp_cmp_d(k, 0) != LTC_MP_GT || mp_cmp(k, key->q) != LTC_MP_LT) { goto retry; } + + /* test gcd */ + if ((err = mp_gcd(k, key->q, tmp)) != CRYPT_OK) { goto error; } + } while (mp_cmp_d(tmp, 1) != LTC_MP_EQ); + + /* now find 1/k mod q */ + if ((err = mp_invmod(k, key->q, kinv)) != CRYPT_OK) { goto error; } + + /* now find r = g^k mod p mod q */ + if ((err = mp_exptmod(key->g, k, key->p, r)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(r, key->q, r)) != CRYPT_OK) { goto error; } + + if (mp_iszero(r) == LTC_MP_YES) { goto retry; } + + /* now find s = (in + xr)/k mod q */ + if ((err = mp_read_unsigned_bin(tmp, (unsigned char *)in, inlen)) != CRYPT_OK) { goto error; } + if ((err = mp_mul(key->x, r, s)) != CRYPT_OK) { goto error; } + if ((err = mp_add(s, tmp, s)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(s, kinv, key->q, s)) != CRYPT_OK) { goto error; } + + if (mp_iszero(s) == LTC_MP_YES) { goto retry; } + + err = CRYPT_OK; +error: + mp_clear_multi(k, kinv, tmp, NULL); +ERRBUF: +#ifdef LTC_CLEAN_STACK + zeromem(buf, LTC_MDSA_MAX_GROUP); +#endif + XFREE(buf); + return err; +} + +/** + Sign a hash with DSA + @param in The hash to sign + @param inlen The length of the hash to sign + @param out [out] Where to store the signature + @param outlen [in/out] The max size and resulting size of the signature + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param key A private DSA key + @return CRYPT_OK if successful +*/ +int dsa_sign_hash(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + prng_state *prng, int wprng, dsa_key *key) +{ + void *r, *s; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + if (mp_init_multi(&r, &s, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + if ((err = dsa_sign_hash_raw(in, inlen, r, s, prng, wprng, key)) != CRYPT_OK) { + goto error; + } + + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_INTEGER, 1UL, r, + LTC_ASN1_INTEGER, 1UL, s, + LTC_ASN1_EOL, 0UL, NULL); + +error: + mp_clear_multi(r, s, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_sign_hash.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_hash.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_hash.c new file mode 100644 index 0000000..50ccaa7 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_hash.c @@ -0,0 +1,154 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_verify_hash.c + DSA implementation, verify a signature, Tom St Denis +*/ + + +#ifdef LTC_MDSA +/** + Verify a DSA signature + @param r DSA "r" parameter + @param s DSA "s" parameter + @param hash The hash that was signed + @param hashlen The length of the hash that was signed + @param stat [out] The result of the signature verification, 1==valid, 0==invalid + @param key The corresponding public DH key + @return CRYPT_OK if successful (even if the signature is invalid) +*/ +int dsa_verify_hash_raw( void *r, void *s, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key) +{ + void *w, *v, *u1, *u2; + int err; + + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(hash != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* default to invalid signature */ + *stat = 0; + + /* init our variables */ + if ((err = mp_init_multi(&w, &v, &u1, &u2, NULL)) != CRYPT_OK) { + return err; + } + + /* neither r or s can be null or >q*/ + if (mp_iszero(r) == LTC_MP_YES || mp_iszero(s) == LTC_MP_YES || mp_cmp(r, key->q) != LTC_MP_LT || mp_cmp(s, key->q) != LTC_MP_LT) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* w = 1/s mod q */ + if ((err = mp_invmod(s, key->q, w)) != CRYPT_OK) { goto error; } + + /* u1 = m * w mod q */ + if ((err = mp_read_unsigned_bin(u1, (unsigned char *)hash, hashlen)) != CRYPT_OK) { goto error; } + + if ((err = mp_mulmod(u1, w, key->q, u1)) != CRYPT_OK) { goto error; } + + /* u2 = r*w mod q */ + if ((err = mp_mulmod(r, w, key->q, u2)) != CRYPT_OK) { goto error; } + + /* v = g^u1 * y^u2 mod p mod q */ + if ((err = mp_exptmod(key->g, u1, key->p, u1)) != CRYPT_OK) { goto error; } + if ((err = mp_exptmod(key->y, u2, key->p, u2)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(u1, u2, key->p, v)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(v, key->q, v)) != CRYPT_OK) { goto error; } + + /* if r = v then we're set */ + if (mp_cmp(r, v) == LTC_MP_EQ) { + *stat = 1; + } + + err = CRYPT_OK; +error: + mp_clear_multi(w, v, u1, u2, NULL); + return err; +} + +/** + Verify a DSA signature + @param sig The signature + @param siglen The length of the signature (octets) + @param hash The hash that was signed + @param hashlen The length of the hash that was signed + @param stat [out] The result of the signature verification, 1==valid, 0==invalid + @param key The corresponding public DH key + @return CRYPT_OK if successful (even if the signature is invalid) +*/ +int dsa_verify_hash(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int *stat, dsa_key *key) +{ + int err; + void *r, *s; + + if ((err = mp_init_multi(&r, &s, NULL)) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* decode the sequence */ + if ((err = der_decode_sequence_multi(sig, siglen, + LTC_ASN1_INTEGER, 1UL, r, + LTC_ASN1_INTEGER, 1UL, s, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* do the op */ + err = dsa_verify_hash_raw(r, s, hash, hashlen, stat, key); + +LBL_ERR: + mp_clear_multi(r, s, NULL); + return err; +} + +#endif + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_verify_hash.c,v $ */ +/* $Revision: 1.15 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_key.c b/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_key.c new file mode 100644 index 0000000..c413a4e --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/dsa_verify_key.c @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file dsa_verify_key.c + DSA implementation, verify a key, Tom St Denis +*/ + +#ifdef LTC_MDSA + +/** + Verify a DSA key for validity + @param key The key to verify + @param stat [out] Result of test, 1==valid, 0==invalid + @return CRYPT_OK if successful +*/ +int dsa_verify_key(dsa_key *key, int *stat) +{ + void *tmp, *tmp2; + int res, err; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(stat != NULL); + + /* default to an invalid key */ + *stat = 0; + + /* first make sure key->q and key->p are prime */ + if ((err = mp_prime_is_prime(key->q, 8, &res)) != CRYPT_OK) { + return err; + } + if (res == 0) { + return CRYPT_OK; + } + + if ((err = mp_prime_is_prime(key->p, 8, &res)) != CRYPT_OK) { + return err; + } + if (res == 0) { + return CRYPT_OK; + } + + /* now make sure that g is not -1, 0 or 1 and <p */ + if (mp_cmp_d(key->g, 0) == LTC_MP_EQ || mp_cmp_d(key->g, 1) == LTC_MP_EQ) { + return CRYPT_OK; + } + if ((err = mp_init_multi(&tmp, &tmp2, NULL)) != CRYPT_OK) { return err; } + if ((err = mp_sub_d(key->p, 1, tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp(tmp, key->g) == LTC_MP_EQ || mp_cmp(key->g, key->p) != LTC_MP_LT) { + err = CRYPT_OK; + goto error; + } + + /* 1 < y < p-1 */ + if (!(mp_cmp_d(key->y, 1) == LTC_MP_GT && mp_cmp(key->y, tmp) == LTC_MP_LT)) { + err = CRYPT_OK; + goto error; + } + + /* now we have to make sure that g^q = 1, and that p-1/q gives 0 remainder */ + if ((err = mp_div(tmp, key->q, tmp, tmp2)) != CRYPT_OK) { goto error; } + if (mp_iszero(tmp2) != LTC_MP_YES) { + err = CRYPT_OK; + goto error; + } + + if ((err = mp_exptmod(key->g, key->q, key->p, tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp_d(tmp, 1) != LTC_MP_EQ) { + err = CRYPT_OK; + goto error; + } + + /* now we have to make sure that y^q = 1, this makes sure y \in g^x mod p */ + if ((err = mp_exptmod(key->y, key->q, key->p, tmp)) != CRYPT_OK) { goto error; } + if (mp_cmp_d(tmp, 1) != LTC_MP_EQ) { + err = CRYPT_OK; + goto error; + } + + /* at this point we are out of tests ;-( */ + err = CRYPT_OK; + *stat = 1; +error: + mp_clear_multi(tmp, tmp2, NULL); + return err; +} +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_verify_key.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/dsa/sub.mk b/core/lib/libtomcrypt/src/pk/dsa/sub.mk new file mode 100644 index 0000000..bd1d2df --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/dsa/sub.mk @@ -0,0 +1,10 @@ +srcs-y += dsa_decrypt_key.c +srcs-y += dsa_encrypt_key.c +srcs-y += dsa_export.c +srcs-y += dsa_free.c +srcs-y += dsa_import.c +srcs-y += dsa_make_key.c +srcs-y += dsa_shared_secret.c +srcs-y += dsa_sign_hash.c +srcs-y += dsa_verify_hash.c +srcs-y += dsa_verify_key.c diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc.c b/core/lib/libtomcrypt/src/pk/ecc/ecc.c new file mode 100644 index 0000000..5b321b7 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/* This holds the key settings. ***MUST*** be organized by size from smallest to largest. */ +const ltc_ecc_set_type ltc_ecc_sets[] = { +#ifdef LTC_ECC112 +{ + 14, + "SECP112R1", + "DB7C2ABF62E35E668076BEAD208B", + "659EF8BA043916EEDE8911702B22", + "DB7C2ABF62E35E7628DFAC6561C5", + "09487239995A5EE76B55F9C2F098", + "A89CE5AF8724C0A23E0E0FF77500" +}, +#endif +#ifdef LTC_ECC128 +{ + 16, + "SECP128R1", + "FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF", + "E87579C11079F43DD824993C2CEE5ED3", + "FFFFFFFE0000000075A30D1B9038A115", + "161FF7528B899B2D0C28607CA52C5B86", + "CF5AC8395BAFEB13C02DA292DDED7A83", +}, +#endif +#ifdef LTC_ECC160 +{ + 20, + "SECP160R1", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF", + "1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45", + "0100000000000000000001F4C8F927AED3CA752257", + "4A96B5688EF573284664698968C38BB913CBFC82", + "23A628553168947D59DCC912042351377AC5FB32", +}, +#endif +#ifdef LTC_ECC192 +{ + 24, + "ECC-192", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF", + "64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1", + "FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831", + "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012", + "7192B95FFC8DA78631011ED6B24CDD573F977A11E794811", +}, +#endif +#ifdef LTC_ECC224 +{ + 28, + "ECC-224", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001", + "B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D", + "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21", + "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34", +}, +#endif +#ifdef LTC_ECC256 +{ + 32, + "ECC-256", + "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF", + "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B", + "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551", + "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296", + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5", +}, +#endif +#ifdef LTC_ECC384 +{ + 48, + "ECC-384", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF", + "B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973", + "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7", + "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F", +}, +#endif +#ifdef LTC_ECC521 +{ + 66, + "ECC-521", + "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", + "51953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00", + "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409", + "C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66", + "11839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650", +}, +#endif +{ + 0, + NULL, NULL, NULL, NULL, NULL, NULL +} +}; + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc.c,v $ */ +/* $Revision: 1.40 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_export.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_export.c new file mode 100644 index 0000000..b35b041 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_export.c @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_ansi_x963_export.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** ECC X9.63 (Sec. 4.3.6) uncompressed export + @param key Key to export + @param out [out] destination of export + @param outlen [in/out] Length of destination and final output size + Return CRYPT_OK on success +*/ +int ecc_ansi_x963_export(ecc_key *key, unsigned char *out, unsigned long *outlen) +{ + unsigned char buf[ECC_BUF_SIZE]; + unsigned long numlen, xlen, ylen; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(outlen != NULL); + + if (ltc_ecc_is_valid_idx(key->idx) == 0) { + return CRYPT_INVALID_ARG; + } + numlen = key->dp->size; + xlen = mp_unsigned_bin_size(key->pubkey.x); + ylen = mp_unsigned_bin_size(key->pubkey.y); + + if (xlen > numlen || ylen > numlen || sizeof(buf) < numlen) { + return CRYPT_BUFFER_OVERFLOW; + } + + if (*outlen < (1 + 2*numlen)) { + *outlen = 1 + 2*numlen; + return CRYPT_BUFFER_OVERFLOW; + } + + LTC_ARGCHK(out != NULL); + + /* store byte 0x04 */ + out[0] = 0x04; + + /* pad and store x */ + zeromem(buf, sizeof(buf)); + mp_to_unsigned_bin(key->pubkey.x, buf + (numlen - xlen)); + XMEMCPY(out+1, buf, numlen); + + /* pad and store y */ + zeromem(buf, sizeof(buf)); + mp_to_unsigned_bin(key->pubkey.y, buf + (numlen - ylen)); + XMEMCPY(out+1+numlen, buf, numlen); + + *outlen = 1 + 2*numlen; + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_ansi_x963_export.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_import.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_import.c new file mode 100644 index 0000000..cafbd07 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_ansi_x963_import.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_ansi_x963_import.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** Import an ANSI X9.63 format public key + @param in The input data to read + @param inlen The length of the input data + @param key [out] destination to store imported key \ +*/ +int ecc_ansi_x963_import(const unsigned char *in, unsigned long inlen, ecc_key *key) +{ + return ecc_ansi_x963_import_ex(in, inlen, key, NULL); +} + +int ecc_ansi_x963_import_ex(const unsigned char *in, unsigned long inlen, ecc_key *key, ltc_ecc_set_type *dp) +{ + int x, err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + + /* must be odd */ + if ((inlen & 1) == 0) { + return CRYPT_INVALID_ARG; + } + + /* init key */ + if (mp_init_multi(&key->pubkey.x, &key->pubkey.y, &key->pubkey.z, &key->k, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* check for 4, 6 or 7 */ + if (in[0] != 4 && in[0] != 6 && in[0] != 7) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* read data */ + if ((err = mp_read_unsigned_bin(key->pubkey.x, (unsigned char *)in+1, (inlen-1)>>1)) != CRYPT_OK) { + goto error; + } + + if ((err = mp_read_unsigned_bin(key->pubkey.y, (unsigned char *)in+1+((inlen-1)>>1), (inlen-1)>>1)) != CRYPT_OK) { + goto error; + } + if ((err = mp_set(key->pubkey.z, 1)) != CRYPT_OK) { goto error; } + + if (dp == NULL) { + /* determine the idx */ + for (x = 0; ltc_ecc_sets[x].size != 0; x++) { + if ((unsigned)ltc_ecc_sets[x].size >= ((inlen-1)>>1)) { + break; + } + } + if (ltc_ecc_sets[x].size == 0) { + err = CRYPT_INVALID_PACKET; + goto error; + } + /* set the idx */ + key->idx = x; + key->dp = <c_ecc_sets[x]; + } else { + if (((inlen-1)>>1) != (unsigned long) dp->size) { + err = CRYPT_INVALID_PACKET; + goto error; + } + key->idx = -1; + key->dp = dp; + } + key->type = PK_PUBLIC; + + /* we're done */ + return CRYPT_OK; +error: + mp_clear_multi(key->pubkey.x, key->pubkey.y, key->pubkey.z, key->k, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_ansi_x963_import.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_decrypt_key.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_decrypt_key.c new file mode 100644 index 0000000..b928dce --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_decrypt_key.c @@ -0,0 +1,176 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_decrypt_key.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Decrypt an ECC encrypted key + @param in The ciphertext + @param inlen The length of the ciphertext (octets) + @param out [out] The plaintext + @param outlen [in/out] The max size and resulting size of the plaintext + @param key The corresponding private ECC key + @return CRYPT_OK if successful +*/ +int ecc_decrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + ecc_key *key) +{ + unsigned char *ecc_shared, *skey, *pub_expt; + unsigned long x, y, hashOID[32]; + int hash, err; + ecc_key pubkey; + ltc_asn1_list decode[3]; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* right key type? */ + if (key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* decode to find out hash */ + LTC_SET_ASN1(decode, 0, LTC_ASN1_OBJECT_IDENTIFIER, hashOID, sizeof(hashOID)/sizeof(hashOID[0])); + + if ((err = der_decode_sequence(in, inlen, decode, 1)) != CRYPT_OK) { + return err; + } + + hash = find_hash_oid(hashOID, decode[0].size); + if (hash_is_valid(hash) != CRYPT_OK) { + return CRYPT_INVALID_PACKET; + } + + /* we now have the hash! */ + + /* allocate memory */ + pub_expt = XMALLOC(ECC_BUF_SIZE); + ecc_shared = XMALLOC(ECC_BUF_SIZE); + skey = XMALLOC(MAXBLOCKSIZE); + if (pub_expt == NULL || ecc_shared == NULL || skey == NULL) { + if (pub_expt != NULL) { + XFREE(pub_expt); + } + if (ecc_shared != NULL) { + XFREE(ecc_shared); + } + if (skey != NULL) { + XFREE(skey); + } + return CRYPT_MEM; + } + LTC_SET_ASN1(decode, 1, LTC_ASN1_OCTET_STRING, pub_expt, ECC_BUF_SIZE); + LTC_SET_ASN1(decode, 2, LTC_ASN1_OCTET_STRING, skey, MAXBLOCKSIZE); + + /* read the structure in now */ + if ((err = der_decode_sequence(in, inlen, decode, 3)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* import ECC key from packet */ + if ((err = ecc_import(decode[1].data, decode[1].size, &pubkey)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* make shared key */ + x = ECC_BUF_SIZE; + if ((err = ecc_shared_secret(key, &pubkey, ecc_shared, &x)) != CRYPT_OK) { + ecc_free(&pubkey); + goto LBL_ERR; + } + ecc_free(&pubkey); + + y = MIN(ECC_BUF_SIZE, MAXBLOCKSIZE); + if ((err = hash_memory(hash, ecc_shared, x, ecc_shared, &y)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* ensure the hash of the shared secret is at least as big as the encrypt itself */ + if (decode[2].size > y) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* avoid buffer overflow */ + if (*outlen < decode[2].size) { + *outlen = decode[2].size; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* Decrypt the key */ + for (x = 0; x < decode[2].size; x++) { + out[x] = skey[x] ^ ecc_shared[x]; + } + *outlen = x; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(pub_expt, ECC_BUF_SIZE); + zeromem(ecc_shared, ECC_BUF_SIZE); + zeromem(skey, MAXBLOCKSIZE); +#endif + + XFREE(pub_expt); + XFREE(ecc_shared); + XFREE(skey); + + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_decrypt_key.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_encrypt_key.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_encrypt_key.c new file mode 100644 index 0000000..f37f374 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_encrypt_key.c @@ -0,0 +1,162 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_encrypt_key.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Encrypt a symmetric key with ECC + @param in The symmetric key you want to encrypt + @param inlen The length of the key to encrypt (octets) + @param out [out] The destination for the ciphertext + @param outlen [in/out] The max size and resulting size of the ciphertext + @param prng An active PRNG state + @param wprng The index of the PRNG you wish to use + @param hash The index of the hash you want to use + @param key The ECC key you want to encrypt to + @return CRYPT_OK if successful +*/ +int ecc_encrypt_key(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + prng_state *prng, int wprng, int hash, + ecc_key *key) +{ + unsigned char *pub_expt, *ecc_shared, *skey; + ecc_key pubkey; + unsigned long x, y, pubkeysize; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* check that wprng/cipher/hash are not invalid */ + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + if (inlen > hash_descriptor[hash].hashsize) { + return CRYPT_INVALID_HASH; + } + + /* make a random key and export the public copy */ + if ((err = ecc_make_key_ex(prng, wprng, &pubkey, key->dp)) != CRYPT_OK) { + return err; + } + + pub_expt = XMALLOC(ECC_BUF_SIZE); + ecc_shared = XMALLOC(ECC_BUF_SIZE); + skey = XMALLOC(MAXBLOCKSIZE); + if (pub_expt == NULL || ecc_shared == NULL || skey == NULL) { + if (pub_expt != NULL) { + XFREE(pub_expt); + } + if (ecc_shared != NULL) { + XFREE(ecc_shared); + } + if (skey != NULL) { + XFREE(skey); + } + ecc_free(&pubkey); + return CRYPT_MEM; + } + + pubkeysize = ECC_BUF_SIZE; + if ((err = ecc_export(pub_expt, &pubkeysize, PK_PUBLIC, &pubkey)) != CRYPT_OK) { + ecc_free(&pubkey); + goto LBL_ERR; + } + + /* make random key */ + x = ECC_BUF_SIZE; + if ((err = ecc_shared_secret(&pubkey, key, ecc_shared, &x)) != CRYPT_OK) { + ecc_free(&pubkey); + goto LBL_ERR; + } + ecc_free(&pubkey); + y = MAXBLOCKSIZE; + if ((err = hash_memory(hash, ecc_shared, x, skey, &y)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* Encrypt key */ + for (x = 0; x < inlen; x++) { + skey[x] ^= in[x]; + } + + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_OBJECT_IDENTIFIER, hash_descriptor[hash].OIDlen, hash_descriptor[hash].OID, + LTC_ASN1_OCTET_STRING, pubkeysize, pub_expt, + LTC_ASN1_OCTET_STRING, inlen, skey, + LTC_ASN1_EOL, 0UL, NULL); + +LBL_ERR: +#ifdef LTC_CLEAN_STACK + /* clean up */ + zeromem(pub_expt, ECC_BUF_SIZE); + zeromem(ecc_shared, ECC_BUF_SIZE); + zeromem(skey, MAXBLOCKSIZE); +#endif + + XFREE(skey); + XFREE(ecc_shared); + XFREE(pub_expt); + + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_encrypt_key.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_export.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_export.c new file mode 100644 index 0000000..70baedd --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_export.c @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_export.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Export an ECC key as a binary packet + @param out [out] Destination for the key + @param outlen [in/out] Max size and resulting size of the exported key + @param type The type of key you want to export (PK_PRIVATE or PK_PUBLIC) + @param key The key to export + @return CRYPT_OK if successful +*/ +int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key) +{ + int err; + unsigned char flags[1]; + unsigned long key_size; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* type valid? */ + if (key->type != PK_PRIVATE && type == PK_PRIVATE) { + return CRYPT_PK_TYPE_MISMATCH; + } + + if (ltc_ecc_is_valid_idx(key->idx) == 0) { + return CRYPT_INVALID_ARG; + } + + /* we store the NIST byte size */ + key_size = key->dp->size; + + if (type == PK_PRIVATE) { + flags[0] = 1; + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_SHORT_INTEGER, 1UL, &key_size, + LTC_ASN1_INTEGER, 1UL, key->pubkey.x, + LTC_ASN1_INTEGER, 1UL, key->pubkey.y, + LTC_ASN1_INTEGER, 1UL, key->k, + LTC_ASN1_EOL, 0UL, NULL); + } else { + flags[0] = 0; + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_SHORT_INTEGER, 1UL, &key_size, + LTC_ASN1_INTEGER, 1UL, key->pubkey.x, + LTC_ASN1_INTEGER, 1UL, key->pubkey.y, + LTC_ASN1_EOL, 0UL, NULL); + } + + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_export.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_free.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_free.c new file mode 100644 index 0000000..5de73ca --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_free.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_free.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Free an ECC key from memory + @param key The key you wish to free +*/ +void ecc_free(ecc_key *key) +{ + LTC_ARGCHKVD(key != NULL); + mp_clear_multi(key->pubkey.x, key->pubkey.y, key->pubkey.z, key->k, NULL); +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_free.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_get_size.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_get_size.c new file mode 100644 index 0000000..5e4e382 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_get_size.c @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_get_size.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Get the size of an ECC key + @param key The key to get the size of + @return The size (octets) of the key or INT_MAX on error +*/ +int ecc_get_size(ecc_key *key) +{ + LTC_ARGCHK(key != NULL); + if (ltc_ecc_is_valid_idx(key->idx)) + return key->dp->size; + else + return INT_MAX; /* large value known to cause it to fail when passed to ecc_make_key() */ +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_get_size.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_import.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_import.c new file mode 100644 index 0000000..41b3fe5 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_import.c @@ -0,0 +1,198 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_import.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +static int is_point(ecc_key *key) +{ + void *prime, *b, *t1, *t2; + int err; + + if ((err = mp_init_multi(&prime, &b, &t1, &t2, NULL)) != CRYPT_OK) { + return err; + } + + /* load prime and b */ + if ((err = mp_read_radix(prime, key->dp->prime, 16)) != CRYPT_OK) { goto error; } + if ((err = mp_read_radix(b, key->dp->B, 16)) != CRYPT_OK) { goto error; } + + /* compute y^2 */ + if ((err = mp_sqr(key->pubkey.y, t1)) != CRYPT_OK) { goto error; } + + /* compute x^3 */ + if ((err = mp_sqr(key->pubkey.x, t2)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(t2, prime, t2)) != CRYPT_OK) { goto error; } + if ((err = mp_mul(key->pubkey.x, t2, t2)) != CRYPT_OK) { goto error; } + + /* compute y^2 - x^3 */ + if ((err = mp_sub(t1, t2, t1)) != CRYPT_OK) { goto error; } + + /* compute y^2 - x^3 + 3x */ + if ((err = mp_add(t1, key->pubkey.x, t1)) != CRYPT_OK) { goto error; } + if ((err = mp_add(t1, key->pubkey.x, t1)) != CRYPT_OK) { goto error; } + if ((err = mp_add(t1, key->pubkey.x, t1)) != CRYPT_OK) { goto error; } + if ((err = mp_mod(t1, prime, t1)) != CRYPT_OK) { goto error; } + while (mp_cmp_d(t1, 0) == LTC_MP_LT) { + if ((err = mp_add(t1, prime, t1)) != CRYPT_OK) { goto error; } + } + while (mp_cmp(t1, prime) != LTC_MP_LT) { + if ((err = mp_sub(t1, prime, t1)) != CRYPT_OK) { goto error; } + } + + /* compare to b */ + if (mp_cmp(t1, b) != LTC_MP_EQ) { + err = CRYPT_INVALID_PACKET; + } else { + err = CRYPT_OK; + } + +error: + mp_clear_multi(prime, b, t1, t2, NULL); + return err; +} + +/** + Import an ECC key from a binary packet + @param in The packet to import + @param inlen The length of the packet + @param key [out] The destination of the import + @return CRYPT_OK if successful, upon error all allocated memory will be freed +*/ +int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key) +{ + return ecc_import_ex(in, inlen, key, NULL); +} + +/** + Import an ECC key from a binary packet, using user supplied domain params rather than one of the NIST ones + @param in The packet to import + @param inlen The length of the packet + @param key [out] The destination of the import + @param dp pointer to user supplied params; must be the same as the params used when exporting + @return CRYPT_OK if successful, upon error all allocated memory will be freed +*/ +int ecc_import_ex(const unsigned char *in, unsigned long inlen, ecc_key *key, const ltc_ecc_set_type *dp) +{ + unsigned long key_size; + unsigned char flags[1]; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(ltc_mp.name != NULL); + + /* init key */ + if (mp_init_multi(&key->pubkey.x, &key->pubkey.y, &key->pubkey.z, &key->k, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* find out what type of key it is */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, &flags, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto done; + } + + + if (flags[0] == 1) { + /* private key */ + key->type = PK_PRIVATE; + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_SHORT_INTEGER, 1UL, &key_size, + LTC_ASN1_INTEGER, 1UL, key->pubkey.x, + LTC_ASN1_INTEGER, 1UL, key->pubkey.y, + LTC_ASN1_INTEGER, 1UL, key->k, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto done; + } + } else { + /* public key */ + key->type = PK_PUBLIC; + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_BIT_STRING, 1UL, flags, + LTC_ASN1_SHORT_INTEGER, 1UL, &key_size, + LTC_ASN1_INTEGER, 1UL, key->pubkey.x, + LTC_ASN1_INTEGER, 1UL, key->pubkey.y, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto done; + } + } + + if (dp == NULL) { + /* find the idx */ + for (key->idx = 0; ltc_ecc_sets[key->idx].size && (unsigned long)ltc_ecc_sets[key->idx].size != key_size; ++key->idx); + if (ltc_ecc_sets[key->idx].size == 0) { + err = CRYPT_INVALID_PACKET; + goto done; + } + key->dp = <c_ecc_sets[key->idx]; + } else { + key->idx = -1; + key->dp = dp; + } + /* set z */ + if ((err = mp_set(key->pubkey.z, 1)) != CRYPT_OK) { goto done; } + + /* is it a point on the curve? */ + if ((err = is_point(key)) != CRYPT_OK) { + goto done; + } + + /* we're good */ + return CRYPT_OK; +done: + mp_clear_multi(key->pubkey.x, key->pubkey.y, key->pubkey.z, key->k, NULL); + return err; +} +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_import.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_make_key.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_make_key.c new file mode 100644 index 0000000..4e9f547 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_make_key.c @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_make_key.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Make a new ECC key + @param prng An active PRNG state + @param wprng The index of the PRNG you wish to use + @param keysize The keysize for the new key (in octets from 20 to 65 bytes) + @param key [out] Destination of the newly created key + @return CRYPT_OK if successful, upon error all allocated memory will be freed +*/ +int ecc_make_key(prng_state *prng, int wprng, int keysize, ecc_key *key) +{ + int x, err; + + /* find key size */ + for (x = 0; (keysize > ltc_ecc_sets[x].size) && (ltc_ecc_sets[x].size != 0); x++); + keysize = ltc_ecc_sets[x].size; + + if (keysize > ECC_MAXSIZE || ltc_ecc_sets[x].size == 0) { + return CRYPT_INVALID_KEYSIZE; + } + err = ecc_make_key_ex(prng, wprng, key, <c_ecc_sets[x]); + key->idx = x; + return err; +} + +int ecc_make_key_ex(prng_state *prng, int wprng, ecc_key *key, const ltc_ecc_set_type *dp) +{ + int err; + ecc_point *base; + void *prime, *order; + unsigned char *buf; + int keysize; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(ltc_mp.name != NULL); + LTC_ARGCHK(dp != NULL); + + /* good prng? */ + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + + key->idx = -1; + key->dp = dp; + keysize = dp->size; + + /* allocate ram */ + base = NULL; + buf = XMALLOC(ECC_MAXSIZE); + if (buf == NULL) { + return CRYPT_MEM; + } + + /* make up random string */ + if (prng_descriptor[wprng]->read(buf, (unsigned long)keysize, prng) != (unsigned long)keysize) { + err = CRYPT_ERROR_READPRNG; + goto ERR_BUF; + } + + /* setup the key variables */ + if ((err = mp_init_multi(&key->pubkey.x, &key->pubkey.y, &key->pubkey.z, &key->k, &prime, &order, NULL)) != CRYPT_OK) { + goto ERR_BUF; + } + base = ltc_ecc_new_point(); + if (base == NULL) { + err = CRYPT_MEM; + goto errkey; + } + + /* read in the specs for this key */ + if ((err = mp_read_radix(prime, (char *)key->dp->prime, 16)) != CRYPT_OK) { goto errkey; } + if ((err = mp_read_radix(order, (char *)key->dp->order, 16)) != CRYPT_OK) { goto errkey; } + if ((err = mp_read_radix(base->x, (char *)key->dp->Gx, 16)) != CRYPT_OK) { goto errkey; } + if ((err = mp_read_radix(base->y, (char *)key->dp->Gy, 16)) != CRYPT_OK) { goto errkey; } + if ((err = mp_set(base->z, 1)) != CRYPT_OK) { goto errkey; } + if ((err = mp_read_unsigned_bin(key->k, (unsigned char *)buf, keysize)) != CRYPT_OK) { goto errkey; } + + /* the key should be smaller than the order of base point */ + if (mp_cmp(key->k, order) != LTC_MP_LT) { + if((err = mp_mod(key->k, order, key->k)) != CRYPT_OK) { goto errkey; } + } + /* make the public key */ + if ((err = ltc_mp.ecc_ptmul(key->k, base, &key->pubkey, prime, 1)) != CRYPT_OK) { goto errkey; } + key->type = PK_PRIVATE; + + /* free up ram */ + err = CRYPT_OK; + goto cleanup; +errkey: + mp_clear_multi(key->pubkey.x, key->pubkey.y, key->pubkey.z, key->k, NULL); +cleanup: + ltc_ecc_del_point(base); + mp_clear_multi(prime, order, NULL); +ERR_BUF: +#ifdef LTC_CLEAN_STACK + zeromem(buf, ECC_MAXSIZE); +#endif + XFREE(buf); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_make_key.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_shared_secret.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_shared_secret.c new file mode 100644 index 0000000..5c0b563 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_shared_secret.c @@ -0,0 +1,121 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_shared_secret.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Create an ECC shared secret between two keys + @param private_key The private ECC key + @param public_key The public key + @param out [out] Destination of the shared secret (Conforms to EC-DH from ANSI X9.63) + @param outlen [in/out] The max size and resulting size of the shared secret + @return CRYPT_OK if successful +*/ +int ecc_shared_secret(ecc_key *private_key, ecc_key *public_key, + unsigned char *out, unsigned long *outlen) +{ + unsigned long x; + ecc_point *result; + void *prime; + int err; + + LTC_ARGCHK(private_key != NULL); + LTC_ARGCHK(public_key != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* type valid? */ + if (private_key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + if (ltc_ecc_is_valid_idx(private_key->idx) == 0 || ltc_ecc_is_valid_idx(public_key->idx) == 0) { + return CRYPT_INVALID_ARG; + } + + if (XSTRCMP(private_key->dp->name, public_key->dp->name) != 0) { + return CRYPT_PK_TYPE_MISMATCH; + } + + /* make new point */ + result = ltc_ecc_new_point(); + if (result == NULL) { + return CRYPT_MEM; + } + + if ((err = mp_init(&prime)) != CRYPT_OK) { + ltc_ecc_del_point(result); + return err; + } + + if ((err = mp_read_radix(prime, (char *)private_key->dp->prime, 16)) != CRYPT_OK) { goto done; } + if ((err = ltc_mp.ecc_ptmul(private_key->k, &public_key->pubkey, result, prime, 1)) != CRYPT_OK) { goto done; } + + x = (unsigned long)mp_unsigned_bin_size(prime); + if (*outlen < x) { + *outlen = x; + err = CRYPT_BUFFER_OVERFLOW; + goto done; + } + zeromem(out, x); + if ((err = mp_to_unsigned_bin(result->x, out + (x - mp_unsigned_bin_size(result->x)))) != CRYPT_OK) { goto done; } + + err = CRYPT_OK; + *outlen = x; +done: + mp_clear(prime); + ltc_ecc_del_point(result); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_shared_secret.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_sign_hash.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_sign_hash.c new file mode 100644 index 0000000..0f5f3ae --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_sign_hash.c @@ -0,0 +1,179 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_sign_hash.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Sign a hash with ECC + @param in The hash to sign + @param inlen The length of the hash to sign + @param r The "r" integer of the signature (caller must initialize with mp_init() first) + @param s The "s" integer of the signature (caller must initialize with mp_init() first) + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param key A private ECC key + @return CRYPT_OK if successful +*/ +int ecc_sign_hash_raw(const unsigned char *in, unsigned long inlen, + void *r, void *s, + prng_state *prng, int wprng, ecc_key *key) +{ + ecc_key pubkey; + void *e, *p; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(key != NULL); + + /* is this a private key? */ + if (key->type != PK_PRIVATE) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* is the IDX valid ? */ + if (ltc_ecc_is_valid_idx(key->idx) != 1) { + return CRYPT_PK_INVALID_TYPE; + } + + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + + /* get the hash and load it as a bignum into 'e' */ + /* init the bignums */ + if ((err = mp_init_multi(&p, &e, NULL)) != CRYPT_OK) { + return err; + } + if ((err = mp_read_radix(p, (char *)key->dp->order, 16)) != CRYPT_OK) { goto errnokey; } + if ((err = mp_read_unsigned_bin(e, (unsigned char *)in, (int)inlen)) != CRYPT_OK) { goto errnokey; } + + /* make up a key and export the public copy */ + for (;;) { + if ((err = ecc_make_key_ex(prng, wprng, &pubkey, key->dp)) != CRYPT_OK) { + goto errnokey; + } + + /* find r = x1 mod n */ + if ((err = mp_mod(pubkey.pubkey.x, p, r)) != CRYPT_OK) { goto error; } + + if (mp_iszero(r) == LTC_MP_YES) { + ecc_free(&pubkey); + } else { + /* find s = (e + xr)/k */ + if ((err = mp_invmod(pubkey.k, p, pubkey.k)) != CRYPT_OK) { goto error; } /* k = 1/k */ + if ((err = mp_mulmod(key->k, r, p, s)) != CRYPT_OK) { goto error; } /* s = xr */ + if ((err = mp_add(e, s, s)) != CRYPT_OK) { goto error; } /* s = e + xr */ + if ((err = mp_mod(s, p, s)) != CRYPT_OK) { goto error; } /* s = e + xr */ + if ((err = mp_mulmod(s, pubkey.k, p, s)) != CRYPT_OK) { goto error; } /* s = (e + xr)/k */ + ecc_free(&pubkey); + if (mp_iszero(s) == LTC_MP_NO) { + break; + } + } + } + + err = CRYPT_OK; + goto errnokey; + +error: + ecc_free(&pubkey); +errnokey: + mp_clear_multi(p, e, NULL); + return err; +} + +/** + Sign a message digest + @param in The message digest to sign + @param inlen The length of the digest + @param out [out] The destination for the signature + @param outlen [in/out] The max size and resulting size of the signature + @param prng An active PRNG state + @param wprng The index of the PRNG you wish to use + @param key A private ECC key + @return CRYPT_OK if successful +*/ +int ecc_sign_hash(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + prng_state *prng, int wprng, ecc_key *key) +{ + void *r, *s; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + if (mp_init_multi(&r, &s, NULL) != CRYPT_OK) { + return CRYPT_MEM; + } + + if ((err = ecc_sign_hash_raw(in, inlen, r, s, prng, wprng, key)) != CRYPT_OK) { + goto error; + } + + /* store as SEQUENCE { r, s -- integer } */ + err = der_encode_sequence_multi(out, outlen, + LTC_ASN1_INTEGER, 1UL, r, + LTC_ASN1_INTEGER, 1UL, s, + LTC_ASN1_EOL, 0UL, NULL); + +error: + mp_clear_multi(r, s, NULL); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_sign_hash.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_sizes.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_sizes.c new file mode 100644 index 0000000..da8a45d --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_sizes.c @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_sizes.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +void ecc_sizes(int *low, int *high) +{ + int i; + LTC_ARGCHKVD(low != NULL); + LTC_ARGCHKVD(high != NULL); + + *low = INT_MAX; + *high = 0; + for (i = 0; ltc_ecc_sets[i].size != 0; i++) { + if (ltc_ecc_sets[i].size < *low) { + *low = ltc_ecc_sets[i].size; + } + if (ltc_ecc_sets[i].size > *high) { + *high = ltc_ecc_sets[i].size; + } + } +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_sizes.c,v $ */ +/* $Revision: 1.6 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ecc_verify_hash.c b/core/lib/libtomcrypt/src/pk/ecc/ecc_verify_hash.c new file mode 100644 index 0000000..2ee3609 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ecc_verify_hash.c @@ -0,0 +1,228 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ecc_verify_hash.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/* verify + * + * w = s^-1 mod n + * u1 = xw + * u2 = rw + * X = u1*G + u2*Q + * v = X_x1 mod n + * accept if v == r + */ + +/** + Verify a ECC signature + @param r ECC "r" parameter + @param s ECC "s" parameter + @param hash The hash that was signed + @param hashlen The length of the hash that was signed + @param stat [out] The result of the signature verification, 1==valid, 0==invalid + @param key The corresponding public DH key + @return CRYPT_OK if successful (even if the signature is invalid) +*/ +int ecc_verify_hash_raw( void *r, void *s, + const unsigned char *hash, unsigned long hashlen, + int *stat, ecc_key *key) +{ + ecc_point *mG, *mQ; + void *v, *w, *u1, *u2, *e, *p, *m; + void *mp = NULL; + int err; + + LTC_ARGCHK(r != NULL); + LTC_ARGCHK(s != NULL); + LTC_ARGCHK(hash != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* default to invalid signature */ + *stat = 0; + mp = NULL; + + /* is the IDX valid ? */ + if (ltc_ecc_is_valid_idx(key->idx) != 1) { + return CRYPT_PK_INVALID_TYPE; + } + + /* allocate ints */ + if ((err = mp_init_multi(&v, &w, &u1, &u2, &p, &e, &m, NULL)) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* allocate points */ + mG = ltc_ecc_new_point(); + mQ = ltc_ecc_new_point(); + if (mQ == NULL || mG == NULL) { + err = CRYPT_MEM; + goto error; + } + + /* get the order */ + if ((err = mp_read_radix(p, (char *)key->dp->order, 16)) != CRYPT_OK) { goto error; } + + /* get the modulus */ + if ((err = mp_read_radix(m, (char *)key->dp->prime, 16)) != CRYPT_OK) { goto error; } + + /* check for zero */ + if (mp_iszero(r) || mp_iszero(s) || mp_cmp(r, p) != LTC_MP_LT || mp_cmp(s, p) != LTC_MP_LT) { + err = CRYPT_INVALID_PACKET; + goto error; + } + + /* read hash */ + if ((err = mp_read_unsigned_bin(e, (unsigned char *)hash, (int)hashlen)) != CRYPT_OK) { goto error; } + + /* w = s^-1 mod n */ + if ((err = mp_invmod(s, p, w)) != CRYPT_OK) { goto error; } + + /* u1 = ew */ + if ((err = mp_mulmod(e, w, p, u1)) != CRYPT_OK) { goto error; } + + /* u2 = rw */ + if ((err = mp_mulmod(r, w, p, u2)) != CRYPT_OK) { goto error; } + + /* find mG and mQ */ + if ((err = mp_read_radix(mG->x, (char *)key->dp->Gx, 16)) != CRYPT_OK) { goto error; } + if ((err = mp_read_radix(mG->y, (char *)key->dp->Gy, 16)) != CRYPT_OK) { goto error; } + if ((err = mp_set(mG->z, 1)) != CRYPT_OK) { goto error; } + + if ((err = mp_copy(key->pubkey.x, mQ->x)) != CRYPT_OK) { goto error; } + if ((err = mp_copy(key->pubkey.y, mQ->y)) != CRYPT_OK) { goto error; } + if ((err = mp_copy(key->pubkey.z, mQ->z)) != CRYPT_OK) { goto error; } + + /* compute u1*mG + u2*mQ = mG */ + if (ltc_mp.ecc_mul2add == NULL) { + if ((err = ltc_mp.ecc_ptmul(u1, mG, mG, m, 0)) != CRYPT_OK) { goto error; } + if ((err = ltc_mp.ecc_ptmul(u2, mQ, mQ, m, 0)) != CRYPT_OK) { goto error; } + + /* find the montgomery mp */ + if ((err = mp_montgomery_setup(m, &mp)) != CRYPT_OK) { goto error; } + + /* add them */ + if ((err = ltc_mp.ecc_ptadd(mQ, mG, mG, m, mp)) != CRYPT_OK) { goto error; } + + /* reduce */ + if ((err = ltc_mp.ecc_map(mG, m, mp)) != CRYPT_OK) { goto error; } + } else { + /* use Shamir's trick to compute u1*mG + u2*mQ using half of the doubles */ + if ((err = ltc_mp.ecc_mul2add(mG, u1, mQ, u2, mG, m)) != CRYPT_OK) { goto error; } + } + + /* v = X_x1 mod n */ + if ((err = mp_mod(mG->x, p, v)) != CRYPT_OK) { goto error; } + + /* does v == r */ + if (mp_cmp(v, r) == LTC_MP_EQ) { + *stat = 1; + } + + /* clear up and return */ + err = CRYPT_OK; +error: + ltc_ecc_del_point(mG); + ltc_ecc_del_point(mQ); + mp_clear_multi(v, w, u1, u2, p, e, m, NULL); + if (mp != NULL) { + mp_montgomery_free(mp); + } + return err; +} + +/** + Verify an ECC signature + @param sig The signature to verify + @param siglen The length of the signature (octets) + @param hash The hash (message digest) that was signed + @param hashlen The length of the hash (octets) + @param stat Result of signature, 1==valid, 0==invalid + @param key The corresponding public ECC key + @return CRYPT_OK if successful (even if the signature is not valid) +*/ + +int ecc_verify_hash(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int *stat, ecc_key *key) +{ + void *r, *s; + int err; + + LTC_ARGCHK(sig != NULL); + LTC_ARGCHK(hash != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* allocate ints */ + if ((err = mp_init_multi(&r, &s, NULL)) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* parse header */ + if ((err = der_decode_sequence_multi(sig, siglen, + LTC_ASN1_INTEGER, 1UL, r, + LTC_ASN1_INTEGER, 1UL, s, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto error; + } + + /* do the op */ + err = ecc_verify_hash_raw(r, s, hash, hashlen, stat, key); + +error: + mp_clear_multi(r, s, NULL); + return err; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_verify_hash.c,v $ */ +/* $Revision: 1.14 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c new file mode 100644 index 0000000..2509273 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_is_valid_idx.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** Returns whether an ECC idx is valid or not + @param n The idx number to check + @return 1 if valid, 0 if not +*/ +int ltc_ecc_is_valid_idx(int n) +{ + int x; + + for (x = 0; ltc_ecc_sets[x].size != 0; x++); + /* -1 is a valid index --- indicating that the domain params were supplied by the user */ + if ((n >= -1) && (n < x)) { + return 1; + } + return 0; +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_map.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_map.c new file mode 100644 index 0000000..7f5447a --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_map.c @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_map.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Map a projective jacbobian point back to affine space + @param P [in/out] The point to map + @param modulus The modulus of the field the ECC curve is in + @param mp The "b" value from montgomery_setup() + @return CRYPT_OK on success +*/ +int ltc_ecc_map(ecc_point *P, void *modulus, void *mp) +{ + void *t1, *t2; + int err; + + LTC_ARGCHK(P != NULL); + LTC_ARGCHK(modulus != NULL); + LTC_ARGCHK(mp != NULL); + + if ((err = mp_init_multi(&t1, &t2, NULL)) != CRYPT_OK) { + return CRYPT_MEM; + } + + /* first map z back to normal */ + if ((err = mp_montgomery_reduce(P->z, modulus, mp)) != CRYPT_OK) { goto done; } + + /* get 1/z */ + if ((err = mp_invmod(P->z, modulus, t1)) != CRYPT_OK) { goto done; } + + /* get 1/z^2 and 1/z^3 */ + if ((err = mp_sqr(t1, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_mod(t2, modulus, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_mul(t1, t2, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_mod(t1, modulus, t1)) != CRYPT_OK) { goto done; } + + /* multiply against x/y */ + if ((err = mp_mul(P->x, t2, P->x)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(P->x, modulus, mp)) != CRYPT_OK) { goto done; } + if ((err = mp_mul(P->y, t1, P->y)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(P->y, modulus, mp)) != CRYPT_OK) { goto done; } + if ((err = mp_set(P->z, 1)) != CRYPT_OK) { goto done; } + + err = CRYPT_OK; +done: + mp_clear_multi(t1, t2, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_map.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c new file mode 100644 index 0000000..dc4cb6b --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c @@ -0,0 +1,234 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_mul2add.c + ECC Crypto, Shamir's Trick, Tom St Denis +*/ + +#ifdef LTC_MECC + +#ifdef LTC_ECC_SHAMIR + +/** Computes kA*A + kB*B = C using Shamir's Trick + @param A First point to multiply + @param kA What to multiple A by + @param B Second point to multiply + @param kB What to multiple B by + @param C [out] Destination point (can overlap with A or B + @param modulus Modulus for curve + @return CRYPT_OK on success +*/ +int ltc_ecc_mul2add(ecc_point *A, void *kA, + ecc_point *B, void *kB, + ecc_point *C, + void *modulus) +{ + ecc_point *precomp[16]; + unsigned bitbufA, bitbufB, lenA, lenB, len, x, y, nA, nB, nibble; + unsigned char *tA, *tB; + int err, first; + void *mp, *mu; + + /* argchks */ + LTC_ARGCHK(A != NULL); + LTC_ARGCHK(B != NULL); + LTC_ARGCHK(C != NULL); + LTC_ARGCHK(kA != NULL); + LTC_ARGCHK(kB != NULL); + LTC_ARGCHK(modulus != NULL); + + /* allocate memory */ + tA = XCALLOC(1, ECC_BUF_SIZE); + if (tA == NULL) { + return CRYPT_MEM; + } + tB = XCALLOC(1, ECC_BUF_SIZE); + if (tB == NULL) { + XFREE(tA); + return CRYPT_MEM; + } + + /* get sizes */ + lenA = mp_unsigned_bin_size(kA); + lenB = mp_unsigned_bin_size(kB); + len = MAX(lenA, lenB); + + /* sanity check */ + if ((lenA > ECC_BUF_SIZE) || (lenB > ECC_BUF_SIZE)) { + err = CRYPT_INVALID_ARG; + goto ERR_T; + } + + /* extract and justify kA */ + mp_to_unsigned_bin(kA, (len - lenA) + tA); + + /* extract and justify kB */ + mp_to_unsigned_bin(kB, (len - lenB) + tB); + + /* allocate the table */ + for (x = 0; x < 16; x++) { + precomp[x] = ltc_ecc_new_point(); + if (precomp[x] == NULL) { + for (y = 0; y < x; ++y) { + ltc_ecc_del_point(precomp[y]); + } + err = CRYPT_MEM; + goto ERR_T; + } + } + + /* init montgomery reduction */ + if ((err = mp_montgomery_setup(modulus, &mp)) != CRYPT_OK) { + goto ERR_P; + } + if ((err = mp_init(&mu)) != CRYPT_OK) { + goto ERR_MP; + } + if ((err = mp_montgomery_normalization(mu, modulus)) != CRYPT_OK) { + goto ERR_MU; + } + + /* copy ones ... */ + if ((err = mp_mulmod(A->x, mu, modulus, precomp[1]->x)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_mulmod(A->y, mu, modulus, precomp[1]->y)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_mulmod(A->z, mu, modulus, precomp[1]->z)) != CRYPT_OK) { goto ERR_MU; } + + if ((err = mp_mulmod(B->x, mu, modulus, precomp[1<<2]->x)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_mulmod(B->y, mu, modulus, precomp[1<<2]->y)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_mulmod(B->z, mu, modulus, precomp[1<<2]->z)) != CRYPT_OK) { goto ERR_MU; } + + /* precomp [i,0](A + B) table */ + if ((err = ltc_mp.ecc_ptdbl(precomp[1], precomp[2], modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + if ((err = ltc_mp.ecc_ptadd(precomp[1], precomp[2], precomp[3], modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + + /* precomp [0,i](A + B) table */ + if ((err = ltc_mp.ecc_ptdbl(precomp[1<<2], precomp[2<<2], modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + if ((err = ltc_mp.ecc_ptadd(precomp[1<<2], precomp[2<<2], precomp[3<<2], modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + + /* precomp [i,j](A + B) table (i != 0, j != 0) */ + for (x = 1; x < 4; x++) { + for (y = 1; y < 4; y++) { + if ((err = ltc_mp.ecc_ptadd(precomp[x], precomp[(y<<2)], precomp[x+(y<<2)], modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + } + } + + nibble = 3; + first = 1; + bitbufA = tA[0]; + bitbufB = tB[0]; + + /* for every byte of the multiplicands */ + for (x = -1;; ) { + /* grab a nibble */ + if (++nibble == 4) { + ++x; if (x == len) break; + bitbufA = tA[x]; + bitbufB = tB[x]; + nibble = 0; + } + + /* extract two bits from both, shift/update */ + nA = (bitbufA >> 6) & 0x03; + nB = (bitbufB >> 6) & 0x03; + bitbufA = (bitbufA << 2) & 0xFF; + bitbufB = (bitbufB << 2) & 0xFF; + + /* if both zero, if first, continue */ + if ((nA == 0) && (nB == 0) && (first == 1)) { + continue; + } + + /* double twice, only if this isn't the first */ + if (first == 0) { + /* double twice */ + if ((err = ltc_mp.ecc_ptdbl(C, C, modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + if ((err = ltc_mp.ecc_ptdbl(C, C, modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + } + + /* if not both zero */ + if ((nA != 0) || (nB != 0)) { + if (first == 1) { + /* if first, copy from table */ + first = 0; + if ((err = mp_copy(precomp[nA + (nB<<2)]->x, C->x)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_copy(precomp[nA + (nB<<2)]->y, C->y)) != CRYPT_OK) { goto ERR_MU; } + if ((err = mp_copy(precomp[nA + (nB<<2)]->z, C->z)) != CRYPT_OK) { goto ERR_MU; } + } else { + /* if not first, add from table */ + if ((err = ltc_mp.ecc_ptadd(C, precomp[nA + (nB<<2)], C, modulus, mp)) != CRYPT_OK) { goto ERR_MU; } + } + } + } + + /* reduce to affine */ + err = ltc_ecc_map(C, modulus, mp); + + /* clean up */ +ERR_MU: + mp_clear(mu); +ERR_MP: + mp_montgomery_free(mp); +ERR_P: + for (x = 0; x < 16; x++) { + ltc_ecc_del_point(precomp[x]); + } +ERR_T: +#ifdef LTC_CLEAN_STACK + zeromem(tA, ECC_BUF_SIZE); + zeromem(tB, ECC_BUF_SIZE); +#endif + XFREE(tA); + XFREE(tB); + + return err; +} + +#endif +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod.c new file mode 100644 index 0000000..dfd59aa --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod.c @@ -0,0 +1,251 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_mulmod.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC +#ifndef LTC_ECC_TIMING_RESISTANT + +/* size of sliding window, don't change this! MUST BE A POWER OF TWO */ +#define WINSIZE 4 +#define WINVARS (1 << (WINSIZE - 1)) + +/** + Perform a point multiplication + @param k The scalar to multiply by + @param G The base point + @param R [out] Destination for kG + @param modulus The modulus of the field the ECC curve is in + @param map Boolean whether to map back to affine or not (1==map, 0 == leave in projective) + @return CRYPT_OK on success +*/ +int ltc_ecc_mulmod(void *k, ecc_point *G, ecc_point *R, void *modulus, int map) +{ + ecc_point *tG, *M[WINVARS]; + int i, j, err; + void *mu, *mp; + ltc_mp_digit buf; + int first, bitbuf, bitcpy, bitcnt, mode, digidx; + + LTC_ARGCHK(k != NULL); + LTC_ARGCHK(G != NULL); + LTC_ARGCHK(R != NULL); + LTC_ARGCHK(modulus != NULL); + + /* init montgomery reduction */ + if ((err = mp_montgomery_setup(modulus, &mp)) != CRYPT_OK) { + return err; + } + if ((err = mp_init(&mu)) != CRYPT_OK) { + mp_montgomery_free(mp); + return err; + } + if ((err = mp_montgomery_normalization(mu, modulus)) != CRYPT_OK) { + mp_montgomery_free(mp); + mp_clear(mu); + return err; + } + + /* alloc ram for window temps */ + for (i = 0; i < WINVARS; i++) { + M[i] = ltc_ecc_new_point(); + if (M[i] == NULL) { + for (j = 0; j < i; j++) { + ltc_ecc_del_point(M[j]); + } + mp_montgomery_free(mp); + mp_clear(mu); + return CRYPT_MEM; + } + } + + /* make a copy of G incase R==G */ + tG = ltc_ecc_new_point(); + if (tG == NULL) { err = CRYPT_MEM; goto done; } + + /* tG = G and convert to montgomery */ + if (mp_cmp_d(mu, 1) == LTC_MP_EQ) { + if ((err = mp_copy(G->x, tG->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(G->y, tG->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(G->z, tG->z)) != CRYPT_OK) { goto done; } + } else { + if ((err = mp_mulmod(G->x, mu, modulus, tG->x)) != CRYPT_OK) { goto done; } + if ((err = mp_mulmod(G->y, mu, modulus, tG->y)) != CRYPT_OK) { goto done; } + if ((err = mp_mulmod(G->z, mu, modulus, tG->z)) != CRYPT_OK) { goto done; } + } + mp_clear(mu); + mu = NULL; + + /* calc the M tab, which holds kG for k==8..15 */ + /* M[0] == [WINVARS].G */ + if ((err = ltc_mp.ecc_ptdbl(tG, M[0], modulus, mp)) != CRYPT_OK) { goto done; } + for (j = 1; j < (WINSIZE-1); ++j) { + if ((err = ltc_mp.ecc_ptdbl(M[0], M[0], modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* now find (WINVARS+k)G for k=1..(WINVARS-1) */ + for (j = (WINVARS + 1); j < (2*WINVARS); j++) { + if ((err = ltc_mp.ecc_ptadd(M[j-(WINVARS + 1)], tG, M[j-WINVARS], modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* setup sliding window */ + mode = 0; + bitcnt = 1; + buf = 0; + digidx = mp_get_digit_count(k) - 1; + bitcpy = bitbuf = 0; + first = 1; + + /* perform ops */ + for (;;) { + /* grab next digit as required */ + if (--bitcnt == 0) { + if (digidx == -1) { + break; + } + buf = mp_get_digit(k, digidx); + bitcnt = (int) ltc_mp.bits_per_digit; + --digidx; + } + + /* grab the next msb from the ltiplicand */ + i = (buf >> (ltc_mp.bits_per_digit - 1)) & 1; + buf <<= 1; + + /* skip leading zero bits */ + if (mode == 0 && i == 0) { + continue; + } + + /* if the bit is zero and mode == 1 then we double */ + if (mode == 1 && i == 0) { + if ((err = ltc_mp.ecc_ptdbl(R, R, modulus, mp)) != CRYPT_OK) { goto done; } + continue; + } + + /* else we add it to the window */ + bitbuf |= (i << (WINSIZE - ++bitcpy)); + mode = 2; + + if (bitcpy == WINSIZE) { + /* if this is the first window we do a simple copy */ + if (first == 1) { + /* R = kG [k = first window] */ + if ((err = mp_copy(M[bitbuf-WINVARS]->x, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(M[bitbuf-WINVARS]->y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(M[bitbuf-WINVARS]->z, R->z)) != CRYPT_OK) { goto done; } + first = 0; + } else { + /* normal window */ + /* ok window is filled so double as required and add */ + /* double first */ + for (j = 0; j < WINSIZE; j++) { + if ((err = ltc_mp.ecc_ptdbl(R, R, modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* then add, bitbuf will be WINVARS..(2*WINVARS - 1) guaranteed */ + if ((err = ltc_mp.ecc_ptadd(R, M[bitbuf-WINVARS], R, modulus, mp)) != CRYPT_OK) { goto done; } + } + /* empty window and reset */ + bitcpy = bitbuf = 0; + mode = 1; + } + } + + /* if bits remain then double/add */ + if (mode == 2 && bitcpy > 0) { + /* double then add */ + for (j = 0; j < bitcpy; j++) { + /* only double if we have had at least one add first */ + if (first == 0) { + if ((err = ltc_mp.ecc_ptdbl(R, R, modulus, mp)) != CRYPT_OK) { goto done; } + } + + bitbuf <<= 1; + if ((bitbuf & (1 << WINSIZE)) != 0) { + if (first == 1){ + /* first add, so copy */ + if ((err = mp_copy(tG->x, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(tG->y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(tG->z, R->z)) != CRYPT_OK) { goto done; } + first = 0; + } else { + /* then add */ + if ((err = ltc_mp.ecc_ptadd(R, tG, R, modulus, mp)) != CRYPT_OK) { goto done; } + } + } + } + } + + /* map R back from projective space */ + if (map) { + err = ltc_ecc_map(R, modulus, mp); + } else { + err = CRYPT_OK; + } +done: + if (mu != NULL) { + mp_clear(mu); + } + mp_montgomery_free(mp); + ltc_ecc_del_point(tG); + for (i = 0; i < WINVARS; i++) { + ltc_ecc_del_point(M[i]); + } + return err; +} + +#endif + +#undef WINSIZE + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod.c,v $ */ +/* $Revision: 1.26 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c new file mode 100644 index 0000000..38af150 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c @@ -0,0 +1,191 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_mulmod_timing.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +#ifdef LTC_ECC_TIMING_RESISTANT + +/** + Perform a point multiplication (timing resistant) + @param k The scalar to multiply by + @param G The base point + @param R [out] Destination for kG + @param modulus The modulus of the field the ECC curve is in + @param map Boolean whether to map back to affine or not (1==map, 0 == leave in projective) + @return CRYPT_OK on success +*/ +int ltc_ecc_mulmod(void *k, ecc_point *G, ecc_point *R, void *modulus, int map) +{ + ecc_point *tG, *M[3]; + int i, j, err; + void *mu, *mp; + ltc_mp_digit buf; + int bitcnt, mode, digidx; + + LTC_ARGCHK(k != NULL); + LTC_ARGCHK(G != NULL); + LTC_ARGCHK(R != NULL); + LTC_ARGCHK(modulus != NULL); + + /* init montgomery reduction */ + if ((err = mp_montgomery_setup(modulus, &mp)) != CRYPT_OK) { + return err; + } + if ((err = mp_init(&mu)) != CRYPT_OK) { + mp_montgomery_free(mp); + return err; + } + if ((err = mp_montgomery_normalization(mu, modulus)) != CRYPT_OK) { + mp_clear(mu); + mp_montgomery_free(mp); + return err; + } + + /* alloc ram for window temps */ + for (i = 0; i < 3; i++) { + M[i] = ltc_ecc_new_point(); + if (M[i] == NULL) { + for (j = 0; j < i; j++) { + ltc_ecc_del_point(M[j]); + } + mp_clear(mu); + mp_montgomery_free(mp); + return CRYPT_MEM; + } + } + + /* make a copy of G incase R==G */ + tG = ltc_ecc_new_point(); + if (tG == NULL) { err = CRYPT_MEM; goto done; } + + /* tG = G and convert to montgomery */ + if ((err = mp_mulmod(G->x, mu, modulus, tG->x)) != CRYPT_OK) { goto done; } + if ((err = mp_mulmod(G->y, mu, modulus, tG->y)) != CRYPT_OK) { goto done; } + if ((err = mp_mulmod(G->z, mu, modulus, tG->z)) != CRYPT_OK) { goto done; } + mp_clear(mu); + mu = NULL; + + /* calc the M tab */ + /* M[0] == G */ + if ((err = mp_copy(tG->x, M[0]->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(tG->y, M[0]->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(tG->z, M[0]->z)) != CRYPT_OK) { goto done; } + /* M[1] == 2G */ + if ((err = ltc_mp.ecc_ptdbl(tG, M[1], modulus, mp)) != CRYPT_OK) { goto done; } + + /* setup sliding window */ + mode = 0; + bitcnt = 1; + buf = 0; + digidx = mp_get_digit_count(k) - 1; + + /* perform ops */ + for (;;) { + /* grab next digit as required */ + if (--bitcnt == 0) { + if (digidx == -1) { + break; + } + buf = mp_get_digit(k, digidx); + bitcnt = (int) MP_DIGIT_BIT; + --digidx; + } + + /* grab the next msb from the ltiplicand */ + i = (buf >> (MP_DIGIT_BIT - 1)) & 1; + buf <<= 1; + + if (mode == 0 && i == 0) { + /* dummy operations */ + if ((err = ltc_mp.ecc_ptadd(M[0], M[1], M[2], modulus, mp)) != CRYPT_OK) { goto done; } + if ((err = ltc_mp.ecc_ptdbl(M[1], M[2], modulus, mp)) != CRYPT_OK) { goto done; } + continue; + } + + if (mode == 0 && i == 1) { + mode = 1; + /* dummy operations */ + if ((err = ltc_mp.ecc_ptadd(M[0], M[1], M[2], modulus, mp)) != CRYPT_OK) { goto done; } + if ((err = ltc_mp.ecc_ptdbl(M[1], M[2], modulus, mp)) != CRYPT_OK) { goto done; } + continue; + } + + if ((err = ltc_mp.ecc_ptadd(M[0], M[1], M[i^1], modulus, mp)) != CRYPT_OK) { goto done; } + if ((err = ltc_mp.ecc_ptdbl(M[i], M[i], modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* copy result out */ + if ((err = mp_copy(M[0]->x, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(M[0]->y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(M[0]->z, R->z)) != CRYPT_OK) { goto done; } + + /* map R back from projective space */ + if (map) { + err = ltc_ecc_map(R, modulus, mp); + } else { + err = CRYPT_OK; + } +done: + if (mu != NULL) { + mp_clear(mu); + } + mp_montgomery_free(mp); + ltc_ecc_del_point(tG); + for (i = 0; i < 3; i++) { + ltc_ecc_del_point(M[i]); + } + return err; +} + +#endif +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_points.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_points.c new file mode 100644 index 0000000..1f4a002 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_points.c @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_points.c + ECC Crypto, Tom St Denis +*/ + +#ifdef LTC_MECC + +/** + Allocate a new ECC point + @return A newly allocated point or NULL on error +*/ +ecc_point *ltc_ecc_new_point(void) +{ + ecc_point *p; + p = XCALLOC(1, sizeof(*p)); + if (p == NULL) { + return NULL; + } + if (mp_init_multi_size(LTC_MAX_ECC * 2, + &p->x, &p->y, &p->z, NULL) != CRYPT_OK) { + XFREE(p); + return NULL; + } + return p; +} + +/** Free an ECC point from memory + @param p The point to free +*/ +void ltc_ecc_del_point(ecc_point *p) +{ + /* prevents free'ing null arguments */ + if (p != NULL) { + mp_clear_multi(p->x, p->y, p->z, NULL); /* note: p->z may be NULL but that's ok with this function anyways */ + XFREE(p); + } +} + +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_points.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c new file mode 100644 index 0000000..7c89a89 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c @@ -0,0 +1,222 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_projective_add_point.c + ECC Crypto, Tom St Denis +*/ + +#if defined(LTC_MECC) && (!defined(LTC_MECC_ACCEL) || defined(LTM_DESC)) + +/** + Add two ECC points + @param P The point to add + @param Q The point to add + @param R [out] The destination of the double + @param modulus The modulus of the field the ECC curve is in + @param mp The "b" value from montgomery_setup() + @return CRYPT_OK on success +*/ +int ltc_ecc_projective_add_point(ecc_point *P, ecc_point *Q, ecc_point *R, void *modulus, void *mp) +{ + void *t1, *t2, *x, *y, *z; + int err; + + LTC_ARGCHK(P != NULL); + LTC_ARGCHK(Q != NULL); + LTC_ARGCHK(R != NULL); + LTC_ARGCHK(modulus != NULL); + LTC_ARGCHK(mp != NULL); + + if ((err = mp_init_multi(&t1, &t2, &x, &y, &z, NULL)) != CRYPT_OK) { + return err; + } + + /* should we dbl instead? */ + if ((err = mp_sub(modulus, Q->y, t1)) != CRYPT_OK) { goto done; } + + if ( (mp_cmp(P->x, Q->x) == LTC_MP_EQ) && + (Q->z != NULL && mp_cmp(P->z, Q->z) == LTC_MP_EQ) && + (mp_cmp(P->y, Q->y) == LTC_MP_EQ || mp_cmp(P->y, t1) == LTC_MP_EQ)) { + mp_clear_multi(t1, t2, x, y, z, NULL); + return ltc_ecc_projective_dbl_point(P, R, modulus, mp); + } + + if ((err = mp_copy(P->x, x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(P->y, y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(P->z, z)) != CRYPT_OK) { goto done; } + + /* if Z is one then these are no-operations */ + if (Q->z != NULL) { + /* T1 = Z' * Z' */ + if ((err = mp_sqr(Q->z, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* X = X * T1 */ + if ((err = mp_mul(t1, x, x)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(x, modulus, mp)) != CRYPT_OK) { goto done; } + /* T1 = Z' * T1 */ + if ((err = mp_mul(Q->z, t1, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* Y = Y * T1 */ + if ((err = mp_mul(t1, y, y)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(y, modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* T1 = Z*Z */ + if ((err = mp_sqr(z, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* T2 = X' * T1 */ + if ((err = mp_mul(Q->x, t1, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t2, modulus, mp)) != CRYPT_OK) { goto done; } + /* T1 = Z * T1 */ + if ((err = mp_mul(z, t1, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* T1 = Y' * T1 */ + if ((err = mp_mul(Q->y, t1, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + + /* Y = Y - T1 */ + if ((err = mp_sub(y, t1, y)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(y, 0) == LTC_MP_LT) { + if ((err = mp_add(y, modulus, y)) != CRYPT_OK) { goto done; } + } + /* T1 = 2T1 */ + if ((err = mp_add(t1, t1, t1)) != CRYPT_OK) { goto done; } + if (mp_cmp(t1, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t1, modulus, t1)) != CRYPT_OK) { goto done; } + } + /* T1 = Y + T1 */ + if ((err = mp_add(t1, y, t1)) != CRYPT_OK) { goto done; } + if (mp_cmp(t1, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t1, modulus, t1)) != CRYPT_OK) { goto done; } + } + /* X = X - T2 */ + if ((err = mp_sub(x, t2, x)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(x, 0) == LTC_MP_LT) { + if ((err = mp_add(x, modulus, x)) != CRYPT_OK) { goto done; } + } + /* T2 = 2T2 */ + if ((err = mp_add(t2, t2, t2)) != CRYPT_OK) { goto done; } + if (mp_cmp(t2, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + /* T2 = X + T2 */ + if ((err = mp_add(t2, x, t2)) != CRYPT_OK) { goto done; } + if (mp_cmp(t2, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + + /* if Z' != 1 */ + if (Q->z != NULL) { + /* Z = Z * Z' */ + if ((err = mp_mul(z, Q->z, z)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(z, modulus, mp)) != CRYPT_OK) { goto done; } + } + + /* Z = Z * X */ + if ((err = mp_mul(z, x, z)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(z, modulus, mp)) != CRYPT_OK) { goto done; } + + /* T1 = T1 * X */ + if ((err = mp_mul(t1, x, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* X = X * X */ + if ((err = mp_sqr(x, x)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(x, modulus, mp)) != CRYPT_OK) { goto done; } + /* T2 = T2 * x */ + if ((err = mp_mul(t2, x, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t2, modulus, mp)) != CRYPT_OK) { goto done; } + /* T1 = T1 * X */ + if ((err = mp_mul(t1, x, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + + /* X = Y*Y */ + if ((err = mp_sqr(y, x)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(x, modulus, mp)) != CRYPT_OK) { goto done; } + /* X = X - T2 */ + if ((err = mp_sub(x, t2, x)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(x, 0) == LTC_MP_LT) { + if ((err = mp_add(x, modulus, x)) != CRYPT_OK) { goto done; } + } + + /* T2 = T2 - X */ + if ((err = mp_sub(t2, x, t2)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(t2, 0) == LTC_MP_LT) { + if ((err = mp_add(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + /* T2 = T2 - X */ + if ((err = mp_sub(t2, x, t2)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(t2, 0) == LTC_MP_LT) { + if ((err = mp_add(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + /* T2 = T2 * Y */ + if ((err = mp_mul(t2, y, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t2, modulus, mp)) != CRYPT_OK) { goto done; } + /* Y = T2 - T1 */ + if ((err = mp_sub(t2, t1, y)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(y, 0) == LTC_MP_LT) { + if ((err = mp_add(y, modulus, y)) != CRYPT_OK) { goto done; } + } + /* Y = Y/2 */ + if (mp_isodd(y)) { + if ((err = mp_add(y, modulus, y)) != CRYPT_OK) { goto done; } + } + if ((err = mp_div_2(y, y)) != CRYPT_OK) { goto done; } + + if ((err = mp_copy(x, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(z, R->z)) != CRYPT_OK) { goto done; } + + err = CRYPT_OK; +done: + mp_clear_multi(t1, t2, x, y, z, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c,v $ */ +/* $Revision: 1.16 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c new file mode 100644 index 0000000..6cd0da9 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c @@ -0,0 +1,173 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b + * + * All curves taken from NIST recommendation paper of July 1999 + * Available at http://csrc.nist.gov/cryptval/dss.htm + */ +#include "tomcrypt.h" + +/** + @file ltc_ecc_projective_dbl_point.c + ECC Crypto, Tom St Denis +*/ + +#if defined(LTC_MECC) && (!defined(LTC_MECC_ACCEL) || defined(LTM_DESC)) + +/** + Double an ECC point + @param P The point to double + @param R [out] The destination of the double + @param modulus The modulus of the field the ECC curve is in + @param mp The "b" value from montgomery_setup() + @return CRYPT_OK on success +*/ +int ltc_ecc_projective_dbl_point(ecc_point *P, ecc_point *R, void *modulus, void *mp) +{ + void *t1, *t2; + int err; + + LTC_ARGCHK(P != NULL); + LTC_ARGCHK(R != NULL); + LTC_ARGCHK(modulus != NULL); + LTC_ARGCHK(mp != NULL); + + if ((err = mp_init_multi(&t1, &t2, NULL)) != CRYPT_OK) { + return err; + } + + if (P != R) { + if ((err = mp_copy(P->x, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(P->y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_copy(P->z, R->z)) != CRYPT_OK) { goto done; } + } + + /* t1 = Z * Z */ + if ((err = mp_sqr(R->z, t1)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t1, modulus, mp)) != CRYPT_OK) { goto done; } + /* Z = Y * Z */ + if ((err = mp_mul(R->z, R->y, R->z)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(R->z, modulus, mp)) != CRYPT_OK) { goto done; } + /* Z = 2Z */ + if ((err = mp_add(R->z, R->z, R->z)) != CRYPT_OK) { goto done; } + if (mp_cmp(R->z, modulus) != LTC_MP_LT) { + if ((err = mp_sub(R->z, modulus, R->z)) != CRYPT_OK) { goto done; } + } + + /* T2 = X - T1 */ + if ((err = mp_sub(R->x, t1, t2)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(t2, 0) == LTC_MP_LT) { + if ((err = mp_add(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + /* T1 = X + T1 */ + if ((err = mp_add(t1, R->x, t1)) != CRYPT_OK) { goto done; } + if (mp_cmp(t1, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t1, modulus, t1)) != CRYPT_OK) { goto done; } + } + /* T2 = T1 * T2 */ + if ((err = mp_mul(t1, t2, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t2, modulus, mp)) != CRYPT_OK) { goto done; } + /* T1 = 2T2 */ + if ((err = mp_add(t2, t2, t1)) != CRYPT_OK) { goto done; } + if (mp_cmp(t1, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t1, modulus, t1)) != CRYPT_OK) { goto done; } + } + /* T1 = T1 + T2 */ + if ((err = mp_add(t1, t2, t1)) != CRYPT_OK) { goto done; } + if (mp_cmp(t1, modulus) != LTC_MP_LT) { + if ((err = mp_sub(t1, modulus, t1)) != CRYPT_OK) { goto done; } + } + + /* Y = 2Y */ + if ((err = mp_add(R->y, R->y, R->y)) != CRYPT_OK) { goto done; } + if (mp_cmp(R->y, modulus) != LTC_MP_LT) { + if ((err = mp_sub(R->y, modulus, R->y)) != CRYPT_OK) { goto done; } + } + /* Y = Y * Y */ + if ((err = mp_sqr(R->y, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(R->y, modulus, mp)) != CRYPT_OK) { goto done; } + /* T2 = Y * Y */ + if ((err = mp_sqr(R->y, t2)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(t2, modulus, mp)) != CRYPT_OK) { goto done; } + /* T2 = T2/2 */ + if (mp_isodd(t2)) { + if ((err = mp_add(t2, modulus, t2)) != CRYPT_OK) { goto done; } + } + if ((err = mp_div_2(t2, t2)) != CRYPT_OK) { goto done; } + /* Y = Y * X */ + if ((err = mp_mul(R->y, R->x, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(R->y, modulus, mp)) != CRYPT_OK) { goto done; } + + /* X = T1 * T1 */ + if ((err = mp_sqr(t1, R->x)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(R->x, modulus, mp)) != CRYPT_OK) { goto done; } + /* X = X - Y */ + if ((err = mp_sub(R->x, R->y, R->x)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(R->x, 0) == LTC_MP_LT) { + if ((err = mp_add(R->x, modulus, R->x)) != CRYPT_OK) { goto done; } + } + /* X = X - Y */ + if ((err = mp_sub(R->x, R->y, R->x)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(R->x, 0) == LTC_MP_LT) { + if ((err = mp_add(R->x, modulus, R->x)) != CRYPT_OK) { goto done; } + } + + /* Y = Y - X */ + if ((err = mp_sub(R->y, R->x, R->y)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(R->y, 0) == LTC_MP_LT) { + if ((err = mp_add(R->y, modulus, R->y)) != CRYPT_OK) { goto done; } + } + /* Y = Y * T1 */ + if ((err = mp_mul(R->y, t1, R->y)) != CRYPT_OK) { goto done; } + if ((err = mp_montgomery_reduce(R->y, modulus, mp)) != CRYPT_OK) { goto done; } + /* Y = Y - T2 */ + if ((err = mp_sub(R->y, t2, R->y)) != CRYPT_OK) { goto done; } + if (mp_cmp_d(R->y, 0) == LTC_MP_LT) { + if ((err = mp_add(R->y, modulus, R->y)) != CRYPT_OK) { goto done; } + } + + err = CRYPT_OK; +done: + mp_clear_multi(t1, t2, NULL); + return err; +} +#endif +/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/ecc/sub.mk b/core/lib/libtomcrypt/src/pk/ecc/sub.mk new file mode 100644 index 0000000..6d38dbc --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/ecc/sub.mk @@ -0,0 +1,14 @@ +srcs-y += ecc.c +srcs-y += ecc_free.c +srcs-y += ecc_make_key.c +srcs-y += ecc_shared_secret.c +srcs-y += ecc_sign_hash.c +srcs-y += ecc_verify_hash.c +srcs-y += ltc_ecc_is_valid_idx.c +srcs-y += ltc_ecc_map.c +srcs-y += ltc_ecc_mulmod.c +srcs-y += ltc_ecc_mulmod_timing.c +srcs-y += ltc_ecc_mul2add.c +srcs-y += ltc_ecc_points.c +srcs-y += ltc_ecc_projective_add_point.c +srcs-y += ltc_ecc_projective_dbl_point.c diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c new file mode 100644 index 0000000..5e40bcb --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_i2osp.c + Integer to Octet I2OSP, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/* always stores the same # of bytes, pads with leading zero bytes + as required + */ + +/** + LTC_PKCS #1 Integer to binary + @param n The integer to store + @param modulus_len The length of the RSA modulus + @param out [out] The destination for the integer + @return CRYPT_OK if successful +*/ +int pkcs_1_i2osp(void *n, unsigned long modulus_len, unsigned char *out) +{ + unsigned long size; + + size = mp_unsigned_bin_size(n); + + if (size > modulus_len) { + return CRYPT_BUFFER_OVERFLOW; + } + + /* store it */ + zeromem(out, modulus_len); + return mp_to_unsigned_bin(n, out+(modulus_len-size)); +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_mgf1.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_mgf1.c new file mode 100644 index 0000000..393e146 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_mgf1.c @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_mgf1.c + The Mask Generation Function (MGF1) for PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + Perform PKCS #1 MGF1 (internal) + @param seed The seed for MGF1 + @param seedlen The length of the seed + @param hash_idx The index of the hash desired + @param mask [out] The destination + @param masklen The length of the mask desired + @return CRYPT_OK if successful +*/ +int pkcs_1_mgf1(int hash_idx, + const unsigned char *seed, unsigned long seedlen, + unsigned char *mask, unsigned long masklen) +{ + unsigned long hLen, x; + ulong32 counter; + int err; + hash_state *md; + unsigned char *buf; + + LTC_ARGCHK(seed != NULL); + LTC_ARGCHK(mask != NULL); + + /* ensure valid hash */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + /* get hash output size */ + hLen = hash_descriptor[hash_idx]->hashsize; + + /* allocate memory */ + md = XMALLOC(sizeof(hash_state)); + buf = XMALLOC(hLen); + if (md == NULL || buf == NULL) { + if (md != NULL) { + XFREE(md); + } + if (buf != NULL) { + XFREE(buf); + } + return CRYPT_MEM; + } + + /* start counter */ + counter = 0; + + while (masklen > 0) { + /* handle counter */ + STORE32H(counter, buf); + ++counter; + + /* get hash of seed || counter */ + if ((err = hash_descriptor[hash_idx]->init(md)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(md, seed, seedlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(md, buf, 4)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->done(md, buf)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* store it */ + for (x = 0; x < hLen && masklen > 0; x++, masklen--) { + *mask++ = buf[x]; + } + } + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(buf, hLen); + zeromem(md, sizeof(hash_state)); +#endif + + XFREE(buf); + XFREE(md); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_mgf1.c,v $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c new file mode 100644 index 0000000..f5e1d98 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c @@ -0,0 +1,215 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_oaep_decode.c + OAEP Padding for PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + PKCS #1 v2.00 OAEP decode + @param msg The encoded data to decode + @param msglen The length of the encoded data (octets) + @param lparam The session or system data (can be NULL) + @param lparamlen The length of the lparam + @param modulus_bitlen The bit length of the RSA modulus + @param hash_idx The index of the hash desired + @param out [out] Destination of decoding + @param outlen [in/out] The max size and resulting size of the decoding + @param res [out] Result of decoding, 1==valid, 0==invalid + @return CRYPT_OK if successful +*/ +int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, int hash_idx, + unsigned char *out, unsigned long *outlen, + int *res) +{ + unsigned char *DB, *seed, *mask; + unsigned long hLen, x, y, modulus_len; + int err, ret; + + LTC_ARGCHK(msg != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(res != NULL); + + /* default to invalid packet */ + *res = 0; + + /* test valid hash */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + hLen = hash_descriptor[hash_idx]->hashsize; + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test hash/message size */ + if ((2*hLen >= (modulus_len - 2)) || (msglen != modulus_len)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + seed = XMALLOC(hLen); + if (DB == NULL || mask == NULL || seed == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (seed != NULL) { + XFREE(seed); + } + return CRYPT_MEM; + } + + /* ok so it's now in the form + + 0x00 || maskedseed || maskedDB + + 1 || hLen || modulus_len - hLen - 1 + + */ + + ret = CRYPT_OK; + + /* must have leading 0x00 byte */ + if (msg[0] != 0x00) { + ret = CRYPT_INVALID_PACKET; + } + + /* now read the masked seed */ + x = 1; + XMEMCPY(seed, msg + x, hLen); + x += hLen; + + /* now read the masked DB */ + XMEMCPY(DB, msg + x, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + /* compute MGF1 of maskedDB (hLen) */ + if ((err = pkcs_1_mgf1(hash_idx, DB, modulus_len - hLen - 1, mask, hLen)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* XOR against seed */ + for (y = 0; y < hLen; y++) { + seed[y] ^= mask[y]; + } + + /* compute MGF1 of seed (k - hlen - 1) */ + if ((err = pkcs_1_mgf1(hash_idx, seed, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* now DB == lhash || PS || 0x01 || M, PS == k - mlen - 2hlen - 2 zeroes */ + + /* compute lhash and store it in seed [reuse temps!] */ + x = modulus_len; + if (lparam != NULL) { + if ((err = hash_memory(hash_idx, lparam, lparamlen, seed, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } else { + /* can't pass hash_memory a NULL so use DB with zero length */ + if ((err = hash_memory(hash_idx, DB, 0, seed, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } + + /* compare the lhash'es */ + if (XMEM_NEQ(seed, DB, hLen) != 0) { + ret = CRYPT_INVALID_PACKET; + } + + /* now zeroes before a 0x01 */ + for (x = hLen; x < (modulus_len - hLen - 1) && DB[x] == 0x00; x++) { + /* step... */ + } + + /* error if wasn't 0x01 */ + if (x == (modulus_len - hLen - 1) || DB[x] != 0x01) { + ret = CRYPT_INVALID_PACKET; + } + + /* rest is the message (and skip 0x01) */ + if ((modulus_len - hLen - 1 - ++x) > *outlen) { + ret = CRYPT_INVALID_PACKET; + } + + if (ret == CRYPT_OK) { + /* copy message */ + *outlen = modulus_len - hLen - 1 - x; + XMEMCPY(out, DB + x, modulus_len - hLen - 1 - x); + x += modulus_len - hLen - 1; + + /* valid packet */ + *res = 1; + } + err = ret; + +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(seed, hLen); + zeromem(mask, modulus_len); +#endif + + XFREE(seed); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_encode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_encode.c new file mode 100644 index 0000000..6bd3e1f --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_encode.c @@ -0,0 +1,200 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_oaep_encode.c + OAEP Padding for PKCS #1, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + PKCS #1 v2.00 OAEP encode + @param msg The data to encode + @param msglen The length of the data to encode (octets) + @param lparam A session or system parameter (can be NULL) + @param lparamlen The length of the lparam data + @param modulus_bitlen The bit length of the RSA modulus + @param prng An active PRNG state + @param prng_idx The index of the PRNG desired + @param hash_idx The index of the hash desired + @param out [out] The destination for the encoded data + @param outlen [in/out] The max size and resulting size of the encoded data + @return CRYPT_OK if successful +*/ +int pkcs_1_oaep_encode(const unsigned char *msg, unsigned long msglen, + const unsigned char *lparam, unsigned long lparamlen, + unsigned long modulus_bitlen, prng_state *prng, + int prng_idx, int hash_idx, + unsigned char *out, unsigned long *outlen) +{ + unsigned char *DB, *seed, *mask; + unsigned long hLen, x, y, modulus_len; + int err; + + LTC_ARGCHK(msg != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* test valid hash */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + /* valid prng */ + if ((err = prng_is_valid(prng_idx)) != CRYPT_OK) { + return err; + } + + hLen = hash_descriptor[hash_idx]->hashsize; + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + if ((2*hLen >= (modulus_len - 2)) || (msglen > (modulus_len - 2*hLen - 2))) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + seed = XMALLOC(hLen); + if (DB == NULL || mask == NULL || seed == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (seed != NULL) { + XFREE(seed); + } + return CRYPT_MEM; + } + + /* get lhash */ + /* DB == lhash || PS || 0x01 || M, PS == k - mlen - 2hlen - 2 zeroes */ + x = modulus_len; + if (lparam != NULL) { + if ((err = hash_memory(hash_idx, lparam, lparamlen, DB, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } else { + /* can't pass hash_memory a NULL so use DB with zero length */ + if ((err = hash_memory(hash_idx, DB, 0, DB, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } + + /* append PS then 0x01 (to lhash) */ + x = hLen; + y = modulus_len - msglen - 2*hLen - 2; + XMEMSET(DB+x, 0, y); + x += y; + + /* 0x01 byte */ + DB[x++] = 0x01; + + /* message (length = msglen) */ + XMEMCPY(DB+x, msg, msglen); + x += msglen; + + /* now choose a random seed */ + if (prng_descriptor[prng_idx]->read(seed, hLen, prng) != hLen) { + err = CRYPT_ERROR_READPRNG; + goto LBL_ERR; + } + + /* compute MGF1 of seed (k - hlen - 1) */ + if ((err = pkcs_1_mgf1(hash_idx, seed, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* compute MGF1 of maskedDB (hLen) */ + if ((err = pkcs_1_mgf1(hash_idx, DB, modulus_len - hLen - 1, mask, hLen)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* XOR against seed */ + for (y = 0; y < hLen; y++) { + seed[y] ^= mask[y]; + } + + /* create string of length modulus_len */ + if (*outlen < modulus_len) { + *outlen = modulus_len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* start output which is 0x00 || maskedSeed || maskedDB */ + x = 0; + out[x++] = 0x00; + XMEMCPY(out+x, seed, hLen); + x += hLen; + XMEMCPY(out+x, DB, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + *outlen = x; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(seed, hLen); + zeromem(mask, modulus_len); +#endif + + XFREE(seed); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_encode.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c new file mode 100644 index 0000000..ee4d947 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_os2ip.c + Octet to Integer OS2IP, Tom St Denis +*/ +#ifdef LTC_PKCS_1 + +/** + Read a binary string into an mp_int + @param n [out] The mp_int destination + @param in The binary string to read + @param inlen The length of the binary string + @return CRYPT_OK if successful +*/ +int pkcs_1_os2ip(void *n, unsigned char *in, unsigned long inlen) +{ + return mp_read_unsigned_bin(n, in, inlen); +} + +#endif /* LTC_PKCS_1 */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_decode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_decode.c new file mode 100644 index 0000000..f79f79e --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_decode.c @@ -0,0 +1,205 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_pss_decode.c + PKCS #1 PSS Signature Padding, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + PKCS #1 v2.00 PSS decode + @param msghash The hash to verify + @param msghashlen The length of the hash (octets) + @param sig The signature data (encoded data) + @param siglen The length of the signature data (octets) + @param saltlen The length of the salt used (octets) + @param hash_idx The index of the hash desired + @param modulus_bitlen The bit length of the RSA modulus + @param res [out] The result of the comparison, 1==valid, 0==invalid + @return CRYPT_OK if successful (even if the comparison failed) +*/ +int pkcs_1_pss_decode(const unsigned char *msghash, unsigned long msghashlen, + const unsigned char *sig, unsigned long siglen, + unsigned long saltlen, int hash_idx, + unsigned long modulus_bitlen, int *res) +{ + unsigned char *DB, *mask, *salt, *hash; + unsigned long x, y, hLen, modulus_len; + int err; + hash_state md; + + LTC_ARGCHK(msghash != NULL); + LTC_ARGCHK(res != NULL); + + /* default to invalid */ + *res = 0; + + /* ensure hash is valid */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + hLen = hash_descriptor[hash_idx]->hashsize; + modulus_bitlen--; + modulus_len = (modulus_bitlen>>3) + (modulus_bitlen & 7 ? 1 : 0); + + /* check sizes */ + if ((saltlen > modulus_len) || + (modulus_len < hLen + saltlen + 2)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt/hash of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + salt = XMALLOC(modulus_len); + hash = XMALLOC(modulus_len); + if (DB == NULL || mask == NULL || salt == NULL || hash == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (salt != NULL) { + XFREE(salt); + } + if (hash != NULL) { + XFREE(hash); + } + return CRYPT_MEM; + } + + /* ensure the 0xBC byte */ + if (sig[siglen-1] != 0xBC) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* copy out the DB */ + x = 0; + XMEMCPY(DB, sig + x, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; + + /* copy out the hash */ + XMEMCPY(hash, sig + x, hLen); + /* x += hLen; */ + + /* check the MSB */ + if ((sig[0] & ~(0xFF >> ((modulus_len<<3) - (modulus_bitlen)))) != 0) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* generate mask of length modulus_len - hLen - 1 from hash */ + if ((err = pkcs_1_mgf1(hash_idx, hash, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* now clear the first byte [make sure smaller than modulus] */ + DB[0] &= 0xFF >> ((modulus_len<<3) - (modulus_bitlen)); + + /* DB = PS || 0x01 || salt, PS == modulus_len - saltlen - hLen - 2 zero bytes */ + + /* check for zeroes and 0x01 */ + for (x = 0; x < modulus_len - saltlen - hLen - 2; x++) { + if (DB[x] != 0x00) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + } + + /* check for the 0x01 */ + if (DB[x++] != 0x01) { + err = CRYPT_INVALID_PACKET; + goto LBL_ERR; + } + + /* M = (eight) 0x00 || msghash || salt, mask = H(M) */ + if ((err = hash_descriptor[hash_idx]->init(&md)) != CRYPT_OK) { + goto LBL_ERR; + } + zeromem(mask, 8); + if ((err = hash_descriptor[hash_idx]->process(&md, mask, 8)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(&md, msghash, msghashlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(&md, DB+x, saltlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->done(&md, mask)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* mask == hash means valid signature */ + if (XMEM_NEQ(mask, hash, hLen) == 0) { + *res = 1; + } + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(mask, modulus_len); + zeromem(salt, modulus_len); + zeromem(hash, modulus_len); +#endif + + XFREE(hash); + XFREE(salt); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_decode.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_encode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_encode.c new file mode 100644 index 0000000..b975213 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_encode.c @@ -0,0 +1,203 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file pkcs_1_pss_encode.c + PKCS #1 PSS Signature Padding, Tom St Denis +*/ + +#ifdef LTC_PKCS_1 + +/** + PKCS #1 v2.00 Signature Encoding + @param msghash The hash to encode + @param msghashlen The length of the hash (octets) + @param saltlen The length of the salt desired (octets) + @param prng An active PRNG context + @param prng_idx The index of the PRNG desired + @param hash_idx The index of the hash desired + @param modulus_bitlen The bit length of the RSA modulus + @param out [out] The destination of the encoding + @param outlen [in/out] The max size and resulting size of the encoded data + @return CRYPT_OK if successful +*/ +int pkcs_1_pss_encode(const unsigned char *msghash, unsigned long msghashlen, + unsigned long saltlen, prng_state *prng, + int prng_idx, int hash_idx, + unsigned long modulus_bitlen, + unsigned char *out, unsigned long *outlen) +{ + unsigned char *DB, *mask, *salt, *hash; + unsigned long x, y, hLen, modulus_len; + int err; + hash_state md; + + LTC_ARGCHK(msghash != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* ensure hash and PRNG are valid */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + if ((err = prng_is_valid(prng_idx)) != CRYPT_OK) { + return err; + } + + hLen = hash_descriptor[hash_idx]->hashsize; + modulus_bitlen--; + modulus_len = (modulus_bitlen>>3) + (modulus_bitlen & 7 ? 1 : 0); + + /* check sizes */ + if ((saltlen > modulus_len) || (modulus_len < hLen + saltlen + 2)) { + return CRYPT_PK_INVALID_SIZE; + } + + /* allocate ram for DB/mask/salt/hash of size modulus_len */ + DB = XMALLOC(modulus_len); + mask = XMALLOC(modulus_len); + salt = XMALLOC(modulus_len); + hash = XMALLOC(modulus_len); + if (DB == NULL || mask == NULL || salt == NULL || hash == NULL) { + if (DB != NULL) { + XFREE(DB); + } + if (mask != NULL) { + XFREE(mask); + } + if (salt != NULL) { + XFREE(salt); + } + if (hash != NULL) { + XFREE(hash); + } + return CRYPT_MEM; + } + + + /* generate random salt */ + if (saltlen > 0) { + if (prng_descriptor[prng_idx]->read(salt, saltlen, prng) != saltlen) { + err = CRYPT_ERROR_READPRNG; + goto LBL_ERR; + } + } + + /* M = (eight) 0x00 || msghash || salt, hash = H(M) */ + if ((err = hash_descriptor[hash_idx]->init(&md)) != CRYPT_OK) { + goto LBL_ERR; + } + zeromem(DB, 8); + if ((err = hash_descriptor[hash_idx]->process(&md, DB, 8)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(&md, msghash, msghashlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->process(&md, salt, saltlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx]->done(&md, hash)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* generate DB = PS || 0x01 || salt, PS == modulus_len - saltlen - hLen - 2 zero bytes */ + x = 0; + XMEMSET(DB + x, 0, modulus_len - saltlen - hLen - 2); + x += modulus_len - saltlen - hLen - 2; + DB[x++] = 0x01; + XMEMCPY(DB + x, salt, saltlen); + /* x += saltlen; */ + + /* generate mask of length modulus_len - hLen - 1 from hash */ + if ((err = pkcs_1_mgf1(hash_idx, hash, hLen, mask, modulus_len - hLen - 1)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* xor against DB */ + for (y = 0; y < (modulus_len - hLen - 1); y++) { + DB[y] ^= mask[y]; + } + + /* output is DB || hash || 0xBC */ + if (*outlen < modulus_len) { + *outlen = modulus_len; + err = CRYPT_BUFFER_OVERFLOW; + goto LBL_ERR; + } + + /* DB len = modulus_len - hLen - 1 */ + y = 0; + XMEMCPY(out + y, DB, modulus_len - hLen - 1); + y += modulus_len - hLen - 1; + + /* hash */ + XMEMCPY(out + y, hash, hLen); + y += hLen; + + /* 0xBC */ + out[y] = 0xBC; + + /* now clear the 8*modulus_len - modulus_bitlen most significant bits */ + out[0] &= 0xFF >> ((modulus_len<<3) - modulus_bitlen); + + /* store output size */ + *outlen = modulus_len; + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(DB, modulus_len); + zeromem(mask, modulus_len); + zeromem(salt, modulus_len); + zeromem(hash, modulus_len); +#endif + + XFREE(hash); + XFREE(salt); + XFREE(mask); + XFREE(DB); + + return err; +} + +#endif /* LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_pss_encode.c,v $ */ +/* $Revision: 1.9 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_decode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_decode.c new file mode 100644 index 0000000..3f5eff7 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_decode.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** @file pkcs_1_v1_5_decode.c + * + * PKCS #1 v1.5 Padding. (Andreas Lange) + */ + +#ifdef LTC_PKCS_1 + +/** @brief PKCS #1 v1.5 decode. + * + * @param msg The encoded data to decode + * @param msglen The length of the encoded data (octets) + * @param block_type Block type to use in padding (\sa ltc_pkcs_1_v1_5_blocks) + * @param modulus_bitlen The bit length of the RSA modulus + * @param out [out] Destination of decoding + * @param outlen [in/out] The max size and resulting size of the decoding + * @param is_valid [out] Boolean whether the padding was valid + * + * @return CRYPT_OK if successful + */ +int pkcs_1_v1_5_decode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + unsigned char *out, + unsigned long *outlen, + int *is_valid) +{ + unsigned long modulus_len, ps_len, i; + int result; + + /* default to invalid packet */ + *is_valid = 0; + + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + + if ((msglen > modulus_len) || (modulus_len < 11)) { + return CRYPT_PK_INVALID_SIZE; + } + + result = CRYPT_OK; + + /* separate encoded message */ + + if ((msg[0] != 0x00) || (msg[1] != (unsigned char)block_type)) { + result = CRYPT_INVALID_PACKET; + } + + if (block_type == LTC_PKCS_1_EME) { + for (i = 2; i < modulus_len; i++) { + /* separator */ + if (msg[i] == 0x00) { break; } + } + ps_len = i++ - 2; + + if (i >= modulus_len) { + /* There was no octet with hexadecimal value 0x00 to separate ps from m. + */ + result = CRYPT_INVALID_PACKET; + } + } else { + for (i = 2; i < modulus_len - 1; i++) { + if (msg[i] != 0xFF) { break; } + } + + /* separator check */ + if (msg[i] != 0) { + /* There was no octet with hexadecimal value 0x00 to separate ps from m. */ + result = CRYPT_INVALID_PACKET; + } + + ps_len = i - 2; + } + + if (ps_len < 8) + { + /* The length of ps is less than 8 octets. + */ + result = CRYPT_INVALID_PACKET; + } + + if (*outlen < (msglen - (2 + ps_len + 1))) { + result = CRYPT_INVALID_PACKET; + } + + if (result == CRYPT_OK) { + *outlen = (msglen - (2 + ps_len + 1)); + XMEMCPY(out, &msg[2 + ps_len + 1], *outlen); + + /* valid packet */ + *is_valid = 1; + } + + return result; +} /* pkcs_1_v1_5_decode */ + +#endif /* #ifdef LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_decode.c,v $ */ +/* $Revision: 1.7 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_encode.c b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_encode.c new file mode 100644 index 0000000..0b1dde3 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_encode.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/*! \file pkcs_1_v1_5_encode.c + * + * PKCS #1 v1.5 Padding (Andreas Lange) + */ + +#ifdef LTC_PKCS_1 + +/*! \brief PKCS #1 v1.5 encode. + * + * \param msg The data to encode + * \param msglen The length of the data to encode (octets) + * \param block_type Block type to use in padding (\sa ltc_pkcs_1_v1_5_blocks) + * \param modulus_bitlen The bit length of the RSA modulus + * \param prng An active PRNG state (only for LTC_PKCS_1_EME) + * \param prng_idx The index of the PRNG desired (only for LTC_PKCS_1_EME) + * \param out [out] The destination for the encoded data + * \param outlen [in/out] The max size and resulting size of the encoded data + * + * \return CRYPT_OK if successful + */ +int pkcs_1_v1_5_encode(const unsigned char *msg, + unsigned long msglen, + int block_type, + unsigned long modulus_bitlen, + prng_state *prng, + int prng_idx, + unsigned char *out, + unsigned long *outlen) +{ + unsigned long modulus_len, ps_len, i; + unsigned char *ps; + int result; + + /* valid block_type? */ + if ((block_type != LTC_PKCS_1_EMSA) && + (block_type != LTC_PKCS_1_EME)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (block_type == LTC_PKCS_1_EME) { /* encryption padding, we need a valid PRNG */ + if ((result = prng_is_valid(prng_idx)) != CRYPT_OK) { + return result; + } + } + + modulus_len = (modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0); + + /* test message size */ + if ((msglen + 11) > modulus_len) { + return CRYPT_PK_INVALID_SIZE; + } + + if (*outlen < modulus_len) { + *outlen = modulus_len; + result = CRYPT_BUFFER_OVERFLOW; + goto bail; + } + + /* generate an octets string PS */ + ps = &out[2]; + ps_len = modulus_len - msglen - 3; + + if (block_type == LTC_PKCS_1_EME) { + /* now choose a random ps */ + if (prng_descriptor[prng_idx]->read(ps, ps_len, prng) != ps_len) { + result = CRYPT_ERROR_READPRNG; + goto bail; + } + + /* transform zero bytes (if any) to non-zero random bytes */ + for (i = 0; i < ps_len; i++) { + while (ps[i] == 0) { + if (prng_descriptor[prng_idx]->read(&ps[i], 1, prng) != 1) { + result = CRYPT_ERROR_READPRNG; + goto bail; + } + } + } + } else { + XMEMSET(ps, 0xFF, ps_len); + } + + /* create string of length modulus_len */ + out[0] = 0x00; + out[1] = (unsigned char)block_type; /* block_type 1 or 2 */ + out[2 + ps_len] = 0x00; + XMEMCPY(&out[2 + ps_len + 1], msg, msglen); + *outlen = modulus_len; + + result = CRYPT_OK; +bail: + return result; +} /* pkcs_1_v1_5_encode */ + +#endif /* #ifdef LTC_PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_v1_5_encode.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/pkcs1/sub.mk b/core/lib/libtomcrypt/src/pk/pkcs1/sub.mk new file mode 100644 index 0000000..43f96b9 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/pkcs1/sub.mk @@ -0,0 +1,9 @@ +srcs-y += pkcs_1_i2osp.c +srcs-y += pkcs_1_mgf1.c +srcs-y += pkcs_1_oaep_decode.c +srcs-y += pkcs_1_oaep_encode.c +srcs-y += pkcs_1_os2ip.c +srcs-y += pkcs_1_pss_decode.c +srcs-y += pkcs_1_pss_encode.c +srcs-y += pkcs_1_v1_5_decode.c +srcs-y += pkcs_1_v1_5_encode.c diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_decrypt_key.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_decrypt_key.c new file mode 100644 index 0000000..f83e047 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_decrypt_key.c @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_decrypt_key.c + RSA PKCS #1 Decryption, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + PKCS #1 decrypt then v1.5 or OAEP depad + @param in The ciphertext + @param inlen The length of the ciphertext (octets) + @param out [out] The plaintext + @param outlen [in/out] The max size and resulting size of the plaintext (octets) + @param lparam The system "lparam" value + @param lparamlen The length of the lparam value (octets) + @param hash_idx The index of the hash desired + @param padding Type of padding (LTC_PKCS_1_OAEP or LTC_PKCS_1_V1_5) + @param stat [out] Result of the decryption, 1==valid, 0==invalid + @param key The corresponding private RSA key + @return CRYPT_OK if succcessul (even if invalid) +*/ +int rsa_decrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + int hash_idx, int padding, + int *stat, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + unsigned char *tmp; + + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(stat != NULL); + + /* default to invalid */ + *stat = 0; + + /* valid padding? */ + + if ((padding != LTC_PKCS_1_V1_5) && + (padding != LTC_PKCS_1_OAEP)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_PKCS_1_OAEP) { + /* valid hash ? */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (key->N)); + if (modulus_bytelen != inlen) { + return CRYPT_INVALID_PACKET; + } + + /* allocate ram */ + tmp = XMALLOC(inlen); + if (tmp == NULL) { + return CRYPT_MEM; + } + + /* rsa decode the packet */ + x = inlen; + if ((err = ltc_mp.rsa_me(in, inlen, tmp, &x, PK_PRIVATE, key)) != CRYPT_OK) { + XFREE(tmp); + return err; + } + + if (padding == LTC_PKCS_1_OAEP) { + /* now OAEP decode the packet */ + err = pkcs_1_oaep_decode(tmp, x, lparam, lparamlen, modulus_bitlen, hash_idx, + out, outlen, stat); + } else { + /* now PKCS #1 v1.5 depad the packet */ + err = pkcs_1_v1_5_decode(tmp, x, LTC_PKCS_1_EME, modulus_bitlen, out, outlen, stat); + } + + XFREE(tmp); + return err; +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_decrypt_key.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_encrypt_key.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_encrypt_key.c new file mode 100644 index 0000000..d01e5b6 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_encrypt_key.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_encrypt_key.c + RSA PKCS #1 encryption, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + (PKCS #1 v2.0) OAEP pad then encrypt + @param in The plaintext + @param inlen The length of the plaintext (octets) + @param out [out] The ciphertext + @param outlen [in/out] The max size and resulting size of the ciphertext + @param lparam The system "lparam" for the encryption + @param lparamlen The length of lparam (octets) + @param prng An active PRNG + @param prng_idx The index of the desired prng + @param hash_idx The index of the desired hash + @param padding Type of padding (LTC_PKCS_1_OAEP or LTC_PKCS_1_V1_5) + @param key The RSA key to encrypt to + @return CRYPT_OK if successful +*/ +int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + prng_state *prng, int prng_idx, int hash_idx, int padding, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* valid padding? */ + if ((padding != LTC_PKCS_1_V1_5) && + (padding != LTC_PKCS_1_OAEP)) { + return CRYPT_PK_INVALID_PADDING; + } + + /* valid prng? */ + if ((err = prng_is_valid(prng_idx)) != CRYPT_OK) { + return err; + } + + if (padding == LTC_PKCS_1_OAEP) { + /* valid hash? */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (key->N)); + if (modulus_bytelen > *outlen) { + *outlen = modulus_bytelen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (padding == LTC_PKCS_1_OAEP) { + /* OAEP pad the key */ + x = *outlen; + if ((err = pkcs_1_oaep_encode(in, inlen, lparam, + lparamlen, modulus_bitlen, prng, prng_idx, hash_idx, + out, &x)) != CRYPT_OK) { + return err; + } + } else { + /* PKCS #1 v1.5 pad the key */ + x = *outlen; + if ((err = pkcs_1_v1_5_encode(in, inlen, LTC_PKCS_1_EME, + modulus_bitlen, prng, prng_idx, + out, &x)) != CRYPT_OK) { + return err; + } + } + + /* rsa exptmod the OAEP or PKCS #1 v1.5 pad */ + return ltc_mp.rsa_me(out, x, out, outlen, PK_PUBLIC, key); +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_encrypt_key.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_export.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_export.c new file mode 100644 index 0000000..6ef370a --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_export.c @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_export.c + Export RSA PKCS keys, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + This will export either an RSAPublicKey or RSAPrivateKey [defined in PKCS #1 v2.1] + @param out [out] Destination of the packet + @param outlen [in/out] The max size and resulting size of the packet + @param type The type of exported key (PK_PRIVATE or PK_PUBLIC) + @param key The RSA key to export + @return CRYPT_OK if successful +*/ +int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key) +{ + unsigned long zero=0; + int err; + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* type valid? */ + if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) { + return CRYPT_PK_INVALID_TYPE; + } + + if (type == PK_PRIVATE) { + /* private key */ + /* output is + Version, n, e, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p + */ + return der_encode_sequence_multi(out, outlen, + LTC_ASN1_SHORT_INTEGER, 1UL, &zero, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_INTEGER, 1UL, key->e, + LTC_ASN1_INTEGER, 1UL, key->d, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->dP, + LTC_ASN1_INTEGER, 1UL, key->dQ, + LTC_ASN1_INTEGER, 1UL, key->qP, + LTC_ASN1_EOL, 0UL, NULL); + } else { + /* public key */ + unsigned long tmplen, *ptmplen; + unsigned char* tmp = NULL; + + if (type & PK_STD) { + tmplen = (mp_count_bits(key->N)/8)*2+8; + tmp = XMALLOC(tmplen); + ptmplen = &tmplen; + if (tmp == NULL) { + return CRYPT_MEM; + } + } + else { + tmp = out; + ptmplen = outlen; + } + + err = der_encode_sequence_multi(tmp, ptmplen, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_INTEGER, 1UL, key->e, + LTC_ASN1_EOL, 0UL, NULL); + + if ((err != CRYPT_OK) || !(type & PK_STD)) { + goto finish; + } + + err = der_encode_subject_public_key_info(out, outlen, + PKA_RSA, tmp, tmplen, LTC_ASN1_NULL, NULL, 0); + +finish: + if (tmp != out) + XFREE(tmp); + return err; + + } +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_export.c,v $ */ +/* $Revision: 1.17 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_exptmod.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_exptmod.c new file mode 100644 index 0000000..1f533fa --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_exptmod.c @@ -0,0 +1,221 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + * + * Added RSA blinding --nmav + */ +#include "tomcrypt.h" + +/** + @file rsa_exptmod.c + RSA PKCS exptmod, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Compute an RSA modular exponentiation + @param in The input data to send into RSA + @param inlen The length of the input (octets) + @param out [out] The destination + @param outlen [in/out] The max size and resulting size of the output + @param which Which exponent to use, e.g. PK_PRIVATE or PK_PUBLIC + @param key The RSA key to use + @return CRYPT_OK if successful +*/ +int rsa_exptmod(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, int which, + rsa_key *key) +{ + void *tmp, *tmpa, *tmpb; +#ifdef LTC_RSA_BLINDING + void *rnd, *rndi /* inverse of rnd */; +#endif + unsigned long x; + int err, no_crt; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* is the key of the right type for the operation? */ + if (which == PK_PRIVATE && (key->type != PK_PRIVATE)) { + return CRYPT_PK_NOT_PRIVATE; + } + + /* must be a private or public operation */ + if (which != PK_PRIVATE && which != PK_PUBLIC) { + return CRYPT_PK_INVALID_TYPE; + } + + /* init and copy into tmp */ + if ((err = mp_init_multi(&tmp, &tmpa, &tmpb, +#ifdef LTC_RSA_BLINDING + &rnd, &rndi, +#endif /* LTC_RSA_BLINDING */ + NULL)) != CRYPT_OK) + { return err; } + if ((err = mp_read_unsigned_bin(tmp, (unsigned char *)in, (int)inlen)) != CRYPT_OK) + { goto error; } + + /* sanity check on the input */ + if (mp_cmp(key->N, tmp) == LTC_MP_LT) { + err = CRYPT_PK_INVALID_SIZE; + goto error; + } + + /* are we using the private exponent and is the key optimized? */ +#ifdef LTC_LINARO_FIX_RSAWITHOUTCRT + if ((which == PK_PRIVATE) && (key->dP == NULL)) { + /* + * Fix when CRT optimization parameters are not there + * In such a case, we directly use the private key + */ + LTC_ARGCHK(key->dQ == NULL); + LTC_ARGCHK(key->qP == NULL); + LTC_ARGCHK(key->p == NULL); + LTC_ARGCHK(key->q == NULL); + /* exptmod it */ + if ((err = mp_exptmod(tmp, key->d, key->N, tmp)) != CRYPT_OK) { goto error; } + } else +#endif + if (which == PK_PRIVATE) { +#ifdef LTC_RSA_BLINDING + /* do blinding */ + err = mp_rand(rnd, mp_get_digit_count(key->N)); + if (err != CRYPT_OK) { + goto error; + } + + /* rndi = 1/rnd mod N */ + err = mp_invmod(rnd, key->N, rndi); + if (err != CRYPT_OK) { + goto error; + } + + /* rnd = rnd^e */ + err = mp_exptmod( rnd, key->e, key->N, rnd); + if (err != CRYPT_OK) { + goto error; + } + + /* tmp = tmp*rnd mod N */ + err = mp_mulmod( tmp, rnd, key->N, tmp); + if (err != CRYPT_OK) { + goto error; + } +#endif /* LTC_RSA_BLINDING */ + + no_crt = (key->dP == NULL) || (mp_get_digit_count(key->dP) == 0); + + if (no_crt) { + /* + * In case CRT optimization parameters are not provided, + * the private key is directly used to exptmod it + */ + if ((err = mp_exptmod(tmp, key->d, key->N, tmp)) != CRYPT_OK) { goto error; } + } else { + /* tmpa = tmp^dP mod p */ + if ((err = mp_exptmod(tmp, key->dP, key->p, tmpa)) != CRYPT_OK) { goto error; } + + /* tmpb = tmp^dQ mod q */ + if ((err = mp_exptmod(tmp, key->dQ, key->q, tmpb)) != CRYPT_OK) { goto error; } + + /* tmp = (tmpa - tmpb) * qInv (mod p) */ + if ((err = mp_sub(tmpa, tmpb, tmp)) != CRYPT_OK) { goto error; } + if ((err = mp_mulmod(tmp, key->qP, key->p, tmp)) != CRYPT_OK) { goto error; } + + /* tmp = tmpb + q * tmp */ + if ((err = mp_mul(tmp, key->q, tmp)) != CRYPT_OK) { goto error; } + if ((err = mp_add(tmp, tmpb, tmp)) != CRYPT_OK) { goto error; } + } + + #ifdef LTC_RSA_BLINDING + /* unblind */ + err = mp_mulmod( tmp, rndi, key->N, tmp); + if (err != CRYPT_OK) { + goto error; + } + #endif + + #ifdef LTC_RSA_CRT_HARDENING + if (!no_crt) { + if ((err = mp_exptmod(tmp, key->e, key->N, tmpa)) != CRYPT_OK) { goto error; } + if ((err = mp_read_unsigned_bin(tmpb, (unsigned char *)in, (int)inlen)) != CRYPT_OK) { goto error; } + if (mp_cmp(tmpa, tmpb) != LTC_MP_EQ) { err = CRYPT_ERROR; goto error; } + } + #endif + } else { + /* exptmod it */ + if ((err = mp_exptmod(tmp, key->e, key->N, tmp)) != CRYPT_OK) { goto error; } + } + + /* read it back */ + x = (unsigned long)mp_unsigned_bin_size(key->N); + if (x > *outlen) { + *outlen = x; + err = CRYPT_BUFFER_OVERFLOW; + goto error; + } + + /* this should never happen ... */ + if (mp_unsigned_bin_size(tmp) > mp_unsigned_bin_size(key->N)) { + err = CRYPT_ERROR; + goto error; + } + *outlen = x; + + /* convert it */ + zeromem(out, x); + if ((err = mp_to_unsigned_bin(tmp, out+(x-mp_unsigned_bin_size(tmp)))) != CRYPT_OK) { goto error; } + + /* clean up and return */ + err = CRYPT_OK; +error: + mp_clear_multi( +#ifdef LTC_RSA_BLINDING + rndi, rnd, +#endif /* LTC_RSA_BLINDING */ + tmpb, tmpa, tmp, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_exptmod.c,v $ */ +/* $Revision: 1.18 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_free.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_free.c new file mode 100644 index 0000000..cfc617c --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_free.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_free.c + Free an RSA key, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Free an RSA key from memory + @param key The RSA key to free +*/ +void rsa_free(rsa_key *key) +{ + LTC_ARGCHKVD(key != NULL); + mp_clear_multi(key->e, key->d, key->N, key->dQ, key->dP, key->qP, key->p, key->q, NULL); +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_free.c,v $ */ +/* $Revision: 1.10 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_import.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_import.c new file mode 100644 index 0000000..7975d2a --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_import.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_import.c + Import a PKCS RSA key, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Import an RSAPublicKey or RSAPrivateKey [two-prime only, only support >= 1024-bit keys, defined in PKCS #1 v2.1] + @param in The packet to import from + @param inlen It's length (octets) + @param key [out] Destination for newly imported key + @return CRYPT_OK if successful, upon error allocated memory is freed +*/ +int rsa_import(const unsigned char *in, unsigned long inlen, rsa_key *key) +{ + int err; + void *zero; + unsigned char *tmpbuf=NULL; + unsigned long tmpbuf_len; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(ltc_mp.name != NULL); + + /* init key */ + if ((err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, + &key->dP, &key->qP, &key->p, &key->q, NULL)) != CRYPT_OK) { + return err; + } + + /* see if the OpenSSL DER format RSA public key will work */ + tmpbuf_len = MAX_RSA_SIZE * 8; + tmpbuf = XCALLOC(1, tmpbuf_len); + if (tmpbuf == NULL) { + err = CRYPT_MEM; + goto LBL_ERR; + } + + err = der_decode_subject_public_key_info(in, inlen, + PKA_RSA, tmpbuf, &tmpbuf_len, + LTC_ASN1_NULL, NULL, 0); + + if (err == CRYPT_OK) { /* SubjectPublicKeyInfo format */ + + /* now it should be SEQUENCE { INTEGER, INTEGER } */ + if ((err = der_decode_sequence_multi(tmpbuf, tmpbuf_len, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_INTEGER, 1UL, key->e, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + key->type = PK_PUBLIC; + err = CRYPT_OK; + goto LBL_FREE; + } + + /* not SSL public key, try to match against PKCS #1 standards */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + + if (mp_cmp_d(key->N, 0) == LTC_MP_EQ) { + if ((err = mp_init(&zero)) != CRYPT_OK) { + goto LBL_ERR; + } + /* it's a private key */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, zero, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_INTEGER, 1UL, key->e, + LTC_ASN1_INTEGER, 1UL, key->d, + LTC_ASN1_INTEGER, 1UL, key->p, + LTC_ASN1_INTEGER, 1UL, key->q, + LTC_ASN1_INTEGER, 1UL, key->dP, + LTC_ASN1_INTEGER, 1UL, key->dQ, + LTC_ASN1_INTEGER, 1UL, key->qP, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + mp_clear(zero); + goto LBL_ERR; + } + mp_clear(zero); + key->type = PK_PRIVATE; + } else if (mp_cmp_d(key->N, 1) == LTC_MP_EQ) { + /* we don't support multi-prime RSA */ + err = CRYPT_PK_INVALID_TYPE; + goto LBL_ERR; + } else { + /* it's a public key and we lack e */ + if ((err = der_decode_sequence_multi(in, inlen, + LTC_ASN1_INTEGER, 1UL, key->N, + LTC_ASN1_INTEGER, 1UL, key->e, + LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { + goto LBL_ERR; + } + key->type = PK_PUBLIC; + } + err = CRYPT_OK; + goto LBL_FREE; + +LBL_ERR: + mp_clear_multi(key->d, key->e, key->N, key->dQ, key->dP, key->qP, key->p, key->q, NULL); + +LBL_FREE: + if (tmpbuf != NULL) + XFREE(tmpbuf); + + return err; +} + +#endif /* LTC_MRSA */ + + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_import.c,v $ */ +/* $Revision: 1.23 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_make_key.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_make_key.c new file mode 100644 index 0000000..163f643 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_make_key.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_make_key.c + RSA key generation, Tom St Denis +*/ + +#ifdef LTC_MRSA + +/** + Create an RSA key + @param prng An active PRNG state + @param wprng The index of the PRNG desired + @param size The size of the modulus (key size) desired (octets) + @param e The "e" value (public key). e==65537 is a good choice + @param key [out] Destination of a newly created private key pair + @return CRYPT_OK if successful, upon error all allocated ram is freed +*/ +int rsa_make_key(prng_state *prng, int wprng, int size, long e, rsa_key *key) +{ + void *p, *q, *tmp1, *tmp2, *tmp3; + int err; + + LTC_ARGCHK(ltc_mp.name != NULL); + LTC_ARGCHK(key != NULL); + + if ((size < (MIN_RSA_SIZE/8)) || (size > (MAX_RSA_SIZE/8))) { + return CRYPT_INVALID_KEYSIZE; + } + + if ((e < 3) || ((e & 1) == 0)) { + return CRYPT_INVALID_ARG; + } + + if ((err = prng_is_valid(wprng)) != CRYPT_OK) { + return err; + } + + if ((err = mp_init_multi(&p, &q, &tmp1, &tmp2, &tmp3, NULL)) != CRYPT_OK) { + return err; + } + + /* make primes p and q (optimization provided by Wayne Scott) */ + if ((err = mp_set_int(tmp3, e)) != CRYPT_OK) { goto cleanup; } /* tmp3 = e */ + + /* make prime "p" */ + do { + if ((err = rand_prime( p, size/2, prng, wprng)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub_d( p, 1, tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = p-1 */ + if ((err = mp_gcd( tmp1, tmp3, tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = gcd(p-1, e) */ + } while (mp_cmp_d( tmp2, 1) != 0); /* while e divides p-1 */ + + /* make prime "q" */ + do { + if ((err = rand_prime( q, size/2, prng, wprng)) != CRYPT_OK) { goto cleanup; } + if ((err = mp_sub_d( q, 1, tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = q-1 */ + if ((err = mp_gcd( tmp1, tmp3, tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = gcd(q-1, e) */ + } while (mp_cmp_d( tmp2, 1) != 0); /* while e divides q-1 */ + + /* tmp1 = lcm(p-1, q-1) */ + if ((err = mp_sub_d( p, 1, tmp2)) != CRYPT_OK) { goto cleanup; } /* tmp2 = p-1 */ + /* tmp1 = q-1 (previous do/while loop) */ + if ((err = mp_lcm( tmp1, tmp2, tmp1)) != CRYPT_OK) { goto cleanup; } /* tmp1 = lcm(p-1, q-1) */ + + /* make key */ + if ((err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL)) != CRYPT_OK) { + goto errkey; + } + + if ((err = mp_set_int( key->e, e)) != CRYPT_OK) { goto errkey; } /* key->e = e */ + if ((err = mp_invmod( key->e, tmp1, key->d)) != CRYPT_OK) { goto errkey; } /* key->d = 1/e mod lcm(p-1,q-1) */ + if ((err = mp_mul( p, q, key->N)) != CRYPT_OK) { goto errkey; } /* key->N = pq */ + + /* optimize for CRT now */ + /* find d mod q-1 and d mod p-1 */ + if ((err = mp_sub_d( p, 1, tmp1)) != CRYPT_OK) { goto errkey; } /* tmp1 = q-1 */ + if ((err = mp_sub_d( q, 1, tmp2)) != CRYPT_OK) { goto errkey; } /* tmp2 = p-1 */ + if ((err = mp_mod( key->d, tmp1, key->dP)) != CRYPT_OK) { goto errkey; } /* dP = d mod p-1 */ + if ((err = mp_mod( key->d, tmp2, key->dQ)) != CRYPT_OK) { goto errkey; } /* dQ = d mod q-1 */ + if ((err = mp_invmod( q, p, key->qP)) != CRYPT_OK) { goto errkey; } /* qP = 1/q mod p */ + + if ((err = mp_copy( p, key->p)) != CRYPT_OK) { goto errkey; } + if ((err = mp_copy( q, key->q)) != CRYPT_OK) { goto errkey; } + + /* set key type (in this case it's CRT optimized) */ + key->type = PK_PRIVATE; + + /* return ok and free temps */ + err = CRYPT_OK; + goto cleanup; +errkey: + mp_clear_multi(key->q, key->p, key->qP, key->dP, key->dQ, key->N, key->d, key->e, NULL); +cleanup: + mp_clear_multi(tmp3, tmp2, tmp1, q, p, NULL); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_make_key.c,v $ */ +/* $Revision: 1.16 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_sign_hash.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_sign_hash.c new file mode 100644 index 0000000..257ddec --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_sign_hash.c @@ -0,0 +1,161 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_sign_hash.c + RSA PKCS #1 v1.5 and v2 PSS sign hash, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + PKCS #1 pad then sign + @param in The hash to sign + @param inlen The length of the hash to sign (octets) + @param out [out] The signature + @param outlen [in/out] The max size and resulting size of the signature + @param padding Type of padding (LTC_PKCS_1_PSS or LTC_PKCS_1_V1_5) + @param prng An active PRNG state + @param prng_idx The index of the PRNG desired + @param hash_idx The index of the hash desired + @param saltlen The length of the salt desired (octets) + @param key The private RSA key to use + @return CRYPT_OK if successful +*/ +int rsa_sign_hash_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + int padding, + prng_state *prng, int prng_idx, + int hash_idx, unsigned long saltlen, + rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x, y; + int err; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); + + /* valid padding? */ + if ((padding != LTC_PKCS_1_V1_5) && (padding != LTC_PKCS_1_PSS)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_PKCS_1_PSS) { + /* valid prng and hash ? */ + if ((err = prng_is_valid(prng_idx)) != CRYPT_OK) { + return err; + } + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits((key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size((key->N)); + if (modulus_bytelen > *outlen) { + *outlen = modulus_bytelen; + return CRYPT_BUFFER_OVERFLOW; + } + + if (padding == LTC_PKCS_1_PSS) { + /* PSS pad the key */ + x = *outlen; + if ((err = pkcs_1_pss_encode(in, inlen, saltlen, prng, prng_idx, + hash_idx, modulus_bitlen, out, &x)) != CRYPT_OK) { + return err; + } + } else { + /* PKCS #1 v1.5 pad the hash */ + unsigned char *tmpin; + ltc_asn1_list digestinfo[2], siginfo[2]; + + /* not all hashes have OIDs... so sad */ + if (hash_descriptor[hash_idx]->OIDlen == 0) { + return CRYPT_INVALID_ARG; + } + + /* construct the SEQUENCE + SEQUENCE { + SEQUENCE {hashoid OID + blah NULL + } + hash OCTET STRING + } + */ + LTC_SET_ASN1(digestinfo, 0, LTC_ASN1_OBJECT_IDENTIFIER, hash_descriptor[hash_idx]->OID, hash_descriptor[hash_idx]->OIDlen); + LTC_SET_ASN1(digestinfo, 1, LTC_ASN1_NULL, NULL, 0); + LTC_SET_ASN1(siginfo, 0, LTC_ASN1_SEQUENCE, digestinfo, 2); + LTC_SET_ASN1(siginfo, 1, LTC_ASN1_OCTET_STRING, in, inlen); + + /* allocate memory for the encoding */ + y = mp_unsigned_bin_size(key->N); + tmpin = XMALLOC(y); + if (tmpin == NULL) { + return CRYPT_MEM; + } + + if ((err = der_encode_sequence(siginfo, 2, tmpin, &y)) != CRYPT_OK) { + XFREE(tmpin); + return err; + } + + x = *outlen; + if ((err = pkcs_1_v1_5_encode(tmpin, y, LTC_PKCS_1_EMSA, + modulus_bitlen, NULL, 0, + out, &x)) != CRYPT_OK) { + XFREE(tmpin); + return err; + } + XFREE(tmpin); + } + + /* RSA encode it */ + return ltc_mp.rsa_me(out, x, out, outlen, PK_PRIVATE, key); +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_sign_hash.c,v $ */ +/* $Revision: 1.11 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/rsa_verify_hash.c b/core/lib/libtomcrypt/src/pk/rsa/rsa_verify_hash.c new file mode 100644 index 0000000..a3c86d3 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/rsa_verify_hash.c @@ -0,0 +1,207 @@ +/* + * Copyright (c) 2001-2007, Tom St Denis + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file rsa_verify_hash.c + RSA PKCS #1 v1.5 or v2 PSS signature verification, Tom St Denis and Andreas Lange +*/ + +#ifdef LTC_MRSA + +/** + PKCS #1 de-sign then v1.5 or PSS depad + @param sig The signature data + @param siglen The length of the signature data (octets) + @param hash The hash of the message that was signed + @param hashlen The length of the hash of the message that was signed (octets) + @param padding Type of padding (LTC_PKCS_1_PSS or LTC_PKCS_1_V1_5) + @param hash_idx The index of the desired hash + @param saltlen The length of the salt used during signature + @param stat [out] The result of the signature comparison, 1==valid, 0==invalid + @param key The public RSA key corresponding to the key that performed the signature + @return CRYPT_OK on success (even if the signature is invalid) +*/ +int rsa_verify_hash_ex(const unsigned char *sig, unsigned long siglen, + const unsigned char *hash, unsigned long hashlen, + int padding, + int hash_idx, unsigned long saltlen, + int *stat, rsa_key *key) +{ + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; + unsigned char *tmpbuf; + + LTC_ARGCHK(hash != NULL); + LTC_ARGCHK(sig != NULL); + LTC_ARGCHK(stat != NULL); + LTC_ARGCHK(key != NULL); + + /* default to invalid */ + *stat = 0; + + /* valid padding? */ + + if ((padding != LTC_PKCS_1_V1_5) && + (padding != LTC_PKCS_1_PSS)) { + return CRYPT_PK_INVALID_PADDING; + } + + if (padding == LTC_PKCS_1_PSS) { + /* valid hash ? */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + } + + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits( (key->N)); + + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size( (key->N)); + if (modulus_bytelen != siglen) { + return CRYPT_INVALID_PACKET; + } + + /* allocate temp buffer for decoded sig */ + tmpbuf = XMALLOC(siglen); + if (tmpbuf == NULL) { + return CRYPT_MEM; + } + + /* RSA decode it */ + x = siglen; + if ((err = ltc_mp.rsa_me(sig, siglen, tmpbuf, &x, PK_PUBLIC, key)) != CRYPT_OK) { + XFREE(tmpbuf); + return err; + } + + /* make sure the output is the right size */ + if (x != siglen) { + XFREE(tmpbuf); + return CRYPT_INVALID_PACKET; + } + + if (padding == LTC_PKCS_1_PSS) { + /* PSS decode and verify it */ + + if(modulus_bitlen%8 == 1){ + err = pkcs_1_pss_decode(hash, hashlen, tmpbuf+1, x-1, saltlen, hash_idx, modulus_bitlen, stat); + } + else{ + err = pkcs_1_pss_decode(hash, hashlen, tmpbuf, x, saltlen, hash_idx, modulus_bitlen, stat); + } + + } else { + /* PKCS #1 v1.5 decode it */ + unsigned char *out; + unsigned long outlen, loid[16], reallen; + int decoded; + ltc_asn1_list digestinfo[2], siginfo[2]; + + /* not all hashes have OIDs... so sad */ + if (hash_descriptor[hash_idx]->OIDlen == 0) { + err = CRYPT_INVALID_ARG; + goto bail_2; + } + + /* allocate temp buffer for decoded hash */ + outlen = ((modulus_bitlen >> 3) + (modulus_bitlen & 7 ? 1 : 0)) - 3; + out = XMALLOC(outlen); + if (out == NULL) { + err = CRYPT_MEM; + goto bail_2; + } + + if ((err = pkcs_1_v1_5_decode(tmpbuf, x, LTC_PKCS_1_EMSA, modulus_bitlen, out, &outlen, &decoded)) != CRYPT_OK) { + XFREE(out); + goto bail_2; + } + + /* now we must decode out[0...outlen-1] using ASN.1, test the OID and then test the hash */ + /* construct the SEQUENCE + SEQUENCE { + SEQUENCE {hashoid OID + blah NULL + } + hash OCTET STRING + } + */ + LTC_SET_ASN1(digestinfo, 0, LTC_ASN1_OBJECT_IDENTIFIER, loid, sizeof(loid)/sizeof(loid[0])); + LTC_SET_ASN1(digestinfo, 1, LTC_ASN1_NULL, NULL, 0); + LTC_SET_ASN1(siginfo, 0, LTC_ASN1_SEQUENCE, digestinfo, 2); + LTC_SET_ASN1(siginfo, 1, LTC_ASN1_OCTET_STRING, tmpbuf, siglen); + + if ((err = der_decode_sequence(out, outlen, siginfo, 2)) != CRYPT_OK) { + XFREE(out); + goto bail_2; + } + + if ((err = der_length_sequence(siginfo, 2, &reallen)) != CRYPT_OK) { + XFREE(out); + goto bail_2; + } + + /* test OID */ + if ((reallen == outlen) && + (digestinfo[0].size == hash_descriptor[hash_idx]->OIDlen) && + (XMEM_NEQ(digestinfo[0].data, hash_descriptor[hash_idx]->OID, sizeof(unsigned long) * hash_descriptor[hash_idx]->OIDlen) == 0) && + (siginfo[1].size == hashlen) && + (XMEM_NEQ(siginfo[1].data, hash, hashlen) == 0)) { + *stat = 1; + } + +#ifdef LTC_CLEAN_STACK + zeromem(out, outlen); +#endif + XFREE(out); + } + +bail_2: +#ifdef LTC_CLEAN_STACK + zeromem(tmpbuf, siglen); +#endif + XFREE(tmpbuf); + return err; +} + +#endif /* LTC_MRSA */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_verify_hash.c,v $ */ +/* $Revision: 1.13 $ */ +/* $Date: 2007/05/12 14:32:35 $ */ diff --git a/core/lib/libtomcrypt/src/pk/rsa/sub.mk b/core/lib/libtomcrypt/src/pk/rsa/sub.mk new file mode 100644 index 0000000..b72a7c0 --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/rsa/sub.mk @@ -0,0 +1,9 @@ +srcs-y += rsa_decrypt_key.c +srcs-y += rsa_encrypt_key.c +srcs-y += rsa_export.c +srcs-y += rsa_exptmod.c +srcs-y += rsa_free.c +srcs-y += rsa_import.c +srcs-y += rsa_make_key.c +srcs-y += rsa_sign_hash.c +srcs-y += rsa_verify_hash.c diff --git a/core/lib/libtomcrypt/src/pk/sub.mk b/core/lib/libtomcrypt/src/pk/sub.mk new file mode 100644 index 0000000..562642c --- /dev/null +++ b/core/lib/libtomcrypt/src/pk/sub.mk @@ -0,0 +1,7 @@ +subdirs-$(_CFG_CRYPTO_WITH_ASN1) += asn1 +subdirs-$(CFG_CRYPTO_DSA) += dsa +# PKCS1 paddings are used with RSA only +subdirs-$(CFG_CRYPTO_RSA) += pkcs1 +subdirs-$(CFG_CRYPTO_RSA) += rsa +subdirs-$(CFG_CRYPTO_DH) += dh +subdirs-$(CFG_CRYPTO_ECC) += ecc |