/* cipher.h * Copyright (C) 1998, 1999, 2000, 2001, 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_RIJNDAEL CIPHER_ALGO_AES #define CIPHER_ALGO_RIJNDAEL192 CIPHER_ALGO_AES192 #define CIPHER_ALGO_RIJNDAEL256 CIPHER_ALGO_AES256 #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 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 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 || (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; 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 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, int (*cmp)(void *, MPI), void *opaque ); /*-- 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*/