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Diffstat (limited to 'apps/prime.c')
| -rw-r--r-- | apps/prime.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/apps/prime.c b/apps/prime.c new file mode 100644 index 0000000..f1aaef8 --- /dev/null +++ b/apps/prime.c @@ -0,0 +1,160 @@ +/* ==================================================================== + * Copyright (c) 2004 The OpenSSL Project. 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. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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 <string.h> + +#include "apps.h" +#include <openssl/bn.h> + + +#undef PROG +#define PROG prime_main + +int MAIN(int, char **); + +int MAIN(int argc, char **argv) + { + int hex=0; + int checks=20; + int generate=0; + int bits=0; + int safe=0; + BIGNUM *bn=NULL; + BIO *bio_out; + + apps_startup(); + + if (bio_err == NULL) + if ((bio_err=BIO_new(BIO_s_file())) != NULL) + BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); + + --argc; + ++argv; + while (argc >= 1 && **argv == '-') + { + if(!strcmp(*argv,"-hex")) + hex=1; + else if(!strcmp(*argv,"-generate")) + generate=1; + else if(!strcmp(*argv,"-bits")) + if(--argc < 1) + goto bad; + else + bits=atoi(*++argv); + else if(!strcmp(*argv,"-safe")) + safe=1; + else if(!strcmp(*argv,"-checks")) + if(--argc < 1) + goto bad; + else + checks=atoi(*++argv); + else + { + BIO_printf(bio_err,"Unknown option '%s'\n",*argv); + goto bad; + } + --argc; + ++argv; + } + + if (argv[0] == NULL && !generate) + { + BIO_printf(bio_err,"No prime specified\n"); + goto bad; + } + + if ((bio_out=BIO_new(BIO_s_file())) != NULL) + { + BIO_set_fp(bio_out,stdout,BIO_NOCLOSE); +#ifdef OPENSSL_SYS_VMS + { + BIO *tmpbio = BIO_new(BIO_f_linebuffer()); + bio_out = BIO_push(tmpbio, bio_out); + } +#endif + } + + if(generate) + { + char *s; + + if(!bits) + { + BIO_printf(bio_err,"Specifiy the number of bits.\n"); + return 1; + } + bn=BN_new(); + BN_generate_prime_ex(bn,bits,safe,NULL,NULL,NULL); + s=hex ? BN_bn2hex(bn) : BN_bn2dec(bn); + BIO_printf(bio_out,"%s\n",s); + OPENSSL_free(s); + } + else + { + if(hex) + BN_hex2bn(&bn,argv[0]); + else + BN_dec2bn(&bn,argv[0]); + + BN_print(bio_out,bn); + BIO_printf(bio_out," is %sprime\n", + BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not "); + } + + BN_free(bn); + BIO_free_all(bio_out); + + return 0; + + bad: + BIO_printf(bio_err,"options are\n"); + BIO_printf(bio_err,"%-14s hex\n","-hex"); + BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>"); + return 1; + } |