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Diffstat (limited to 'include/cipher.h')
| -rw-r--r-- | include/cipher.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/include/cipher.h b/include/cipher.h new file mode 100644 index 0000000..5b531cc --- /dev/null +++ b/include/cipher.h @@ -0,0 +1,209 @@ +/* cipher.h + * Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, + * 2006 Free Software Foundation, Inc. + * + * This file is part of GNUPG. + * + * GNUPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GNUPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ +#ifndef G10_CIPHER_H +#define G10_CIPHER_H + +#define DBG_CIPHER g10c_debug_mode + +#include "mpi.h" +#include "../cipher/random.h" + + +#define CIPHER_ALGO_NONE 0 +#define CIPHER_ALGO_IDEA 1 +#define CIPHER_ALGO_3DES 2 +#define CIPHER_ALGO_CAST5 3 +#define CIPHER_ALGO_BLOWFISH 4 /* blowfish 128 bit key */ +/* 5 & 6 are reserved */ +#define CIPHER_ALGO_AES 7 +#define CIPHER_ALGO_AES192 8 +#define CIPHER_ALGO_AES256 9 +#define CIPHER_ALGO_TWOFISH 10 /* twofish 256 bit */ +#define CIPHER_ALGO_DUMMY 110 /* no encryption at all */ + +#define PUBKEY_ALGO_RSA 1 +#define PUBKEY_ALGO_RSA_E 2 /* RSA encrypt only */ +#define PUBKEY_ALGO_RSA_S 3 /* RSA sign only */ +#define PUBKEY_ALGO_ELGAMAL_E 16 /* encrypt only ElGamal (but not for v3)*/ +#define PUBKEY_ALGO_DSA 17 +#define PUBKEY_ALGO_ELGAMAL 20 /* sign and encrypt elgamal */ + +#define PUBKEY_USAGE_SIG 1 /* key is good for signatures */ +#define PUBKEY_USAGE_ENC 2 /* key is good for encryption */ +#define PUBKEY_USAGE_CERT 4 /* key is also good to certify other keys*/ +#define PUBKEY_USAGE_AUTH 8 /* key is good for authentication */ +#define PUBKEY_USAGE_UNKNOWN 128 /* key has an unknown usage bit */ + +#define DIGEST_ALGO_MD5 1 +#define DIGEST_ALGO_SHA1 2 +#define DIGEST_ALGO_RMD160 3 +/* 4, 5, 6, and 7 are reserved */ +#define DIGEST_ALGO_SHA256 8 +#define DIGEST_ALGO_SHA384 9 +#define DIGEST_ALGO_SHA512 10 +#define DIGEST_ALGO_SHA224 11 + +#define COMPRESS_ALGO_NONE 0 +#define COMPRESS_ALGO_ZIP 1 +#define COMPRESS_ALGO_ZLIB 2 +#define COMPRESS_ALGO_BZIP2 3 + +#define is_RSA(a) ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \ + || (a)==PUBKEY_ALGO_RSA_S ) +#define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL_E) +#define is_DSA(a) ((a)==PUBKEY_ALGO_DSA) + +typedef struct +{ + int algo; + int keylen; + int algo_info_printed; + int use_mdc; + int symmetric; + byte key[32]; /* this is the largest used keylen (256 bit) */ +} DEK; + +struct cipher_handle_s; +typedef struct cipher_handle_s *CIPHER_HANDLE; + + +#define CIPHER_MODE_ECB 1 +#define CIPHER_MODE_CFB 2 +#define CIPHER_MODE_PHILS_CFB 3 +#define CIPHER_MODE_AUTO_CFB 4 +#define CIPHER_MODE_DUMMY 5 /* used with algo DUMMY for no encryption */ +#define CIPHER_MODE_CBC 6 + +struct md_digest_list_s; + +struct gcry_md_context { + int secure; + FILE *debug; + int finalized; + struct md_digest_list_s *list; + int bufcount; + int bufsize; + byte buffer[1]; +}; + +typedef struct gcry_md_context *MD_HANDLE; + +#ifndef EXTERN_UNLESS_MAIN_MODULE +#if defined (__riscos__) && !defined (INCLUDED_BY_MAIN_MODULE) +#define EXTERN_UNLESS_MAIN_MODULE extern +#else +#define EXTERN_UNLESS_MAIN_MODULE +#endif +#endif +EXTERN_UNLESS_MAIN_MODULE int g10c_debug_mode; +EXTERN_UNLESS_MAIN_MODULE int g10_opt_verbose; +EXTERN_UNLESS_MAIN_MODULE const char *g10_opt_homedir; + + +/*-- dynload.c --*/ +void register_cipher_extension( const char *mainpgm, const char *fname ); + +/*-- md.c --*/ +int string_to_digest_algo( const char *string ); +const char * digest_algo_to_string( int algo ); +int check_digest_algo( int algo ); +MD_HANDLE md_open( int algo, int secure ); +void md_enable( MD_HANDLE hd, int algo ); +MD_HANDLE md_copy( MD_HANDLE a ); +void md_reset( MD_HANDLE a ); +void md_close(MD_HANDLE a); +void md_write( MD_HANDLE a, const byte *inbuf, size_t inlen); +void md_final(MD_HANDLE a); +byte *md_read( MD_HANDLE a, int algo ); +int md_digest( MD_HANDLE a, int algo, byte *buffer, int buflen ); +int md_get_algo( MD_HANDLE a ); +int md_algo_present( MD_HANDLE a, int algo ); +int md_digest_length( int algo ); +const byte *md_asn_oid( int algo, size_t *asnlen, size_t *mdlen ); +void md_start_debug( MD_HANDLE a, const char *suffix ); +void md_stop_debug( MD_HANDLE a ); +#define md_is_secure(a) ((a)->secure) +#define md_putc(h,c) \ + do { \ + if( (h)->bufcount == (h)->bufsize ) \ + md_write( (h), NULL, 0 ); \ + (h)->buffer[(h)->bufcount++] = (c) & 0xff; \ + } while(0) + +void rmd160_hash_buffer (char *outbuf, const char *buffer, size_t length); + + +/*-- cipher.c --*/ +int string_to_cipher_algo( const char *string ); +const char * cipher_algo_to_string( int algo ); +void disable_cipher_algo( int algo ); +int check_cipher_algo( int algo ); +unsigned cipher_get_keylen( int algo ); +unsigned cipher_get_blocksize( int algo ); +CIPHER_HANDLE cipher_open( int algo, int mode, int secure ); +void cipher_close( CIPHER_HANDLE c ); +int cipher_setkey( CIPHER_HANDLE c, byte *key, unsigned keylen ); +void cipher_setiv( CIPHER_HANDLE c, const byte *iv, unsigned ivlen ); +void cipher_encrypt( CIPHER_HANDLE c, byte *out, byte *in, unsigned nbytes ); +void cipher_decrypt( CIPHER_HANDLE c, byte *out, byte *in, unsigned nbytes ); +void cipher_sync( CIPHER_HANDLE c ); + +/*-- pubkey.c --*/ +#define PUBKEY_MAX_NPKEY 4 +#define PUBKEY_MAX_NSKEY 6 +#define PUBKEY_MAX_NSIG 2 +#define PUBKEY_MAX_NENC 2 + +int string_to_pubkey_algo( const char *string ); +const char * pubkey_algo_to_string( int algo ); +void disable_pubkey_algo( int algo ); +int check_pubkey_algo( int algo ); +int check_pubkey_algo2( int algo, unsigned use ); +int pubkey_get_npkey( int algo ); +int pubkey_get_nskey( int algo ); +int pubkey_get_nsig( int algo ); +int pubkey_get_nenc( int algo ); +unsigned pubkey_nbits( int algo, MPI *pkey ); +int pubkey_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ); +int dsa2_generate( int algo, unsigned nbits, unsigned qbits, + MPI *skey, MPI **retfactors ); +int pubkey_check_secret_key( int algo, MPI *skey ); +int pubkey_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ); +int pubkey_decrypt( int algo, MPI *result, MPI *data, MPI *skey ); +int pubkey_sign( int algo, MPI *resarr, MPI hash, MPI *skey ); +int pubkey_verify( int algo, MPI hash, MPI *data, MPI *pkey ); + +/*-- smallprime.c --*/ +extern ushort small_prime_numbers[]; + +/*-- primegen.c --*/ +void register_primegen_progress ( void (*cb)( void *, int), void *cb_data ); +MPI generate_secret_prime( unsigned nbits ); +MPI generate_public_prime( unsigned nbits ); +MPI generate_elg_prime( int mode, unsigned pbits, unsigned qbits, + MPI g, MPI **factors ); + +/*-- elsewhere --*/ +void register_pk_dsa_progress ( void (*cb)( void *, int), void *cb_data ); +void register_pk_elg_progress ( void (*cb)( void *, int), void *cb_data ); + +#endif /*G10_CIPHER_H*/ |