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195 lines
6.7 KiB
C
195 lines
6.7 KiB
C
/* cipher.h
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* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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*
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* This file is part of GNUPG.
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*
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* GNUPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GNUPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef G10_CIPHER_H
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#define G10_CIPHER_H
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#define DBG_CIPHER g10c_debug_mode
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#include "mpi.h"
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#include "../cipher/random.h"
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#define CIPHER_ALGO_NONE 0
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#define CIPHER_ALGO_IDEA 1
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#define CIPHER_ALGO_3DES 2
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#define CIPHER_ALGO_CAST5 3
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#define CIPHER_ALGO_BLOWFISH 4 /* blowfish 128 bit key */
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#define CIPHER_ALGO_SAFER_SK128 5
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#define CIPHER_ALGO_DES_SK 6
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#define CIPHER_ALGO_RIJNDAEL 7
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#define CIPHER_ALGO_RIJNDAEL192 8
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#define CIPHER_ALGO_RIJNDAEL256 9
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#define CIPHER_ALGO_TWOFISH 10 /* twofish 256 bit */
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#define CIPHER_ALGO_SKIPJACK 101 /* experimental: skipjack */
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#define CIPHER_ALGO_TWOFISH_OLD 102 /* experimental: twofish 128 bit */
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#define CIPHER_ALGO_DUMMY 110 /* no encryption at all */
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#define PUBKEY_ALGO_RSA 1
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#define PUBKEY_ALGO_RSA_E 2 /* RSA encrypt only */
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#define PUBKEY_ALGO_RSA_S 3 /* RSA sign only */
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#define PUBKEY_ALGO_ELGAMAL_E 16 /* encrypt only ElGamal (but not for v3)*/
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#define PUBKEY_ALGO_DSA 17
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#define PUBKEY_ALGO_ELGAMAL 20 /* sign and encrypt elgamal */
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#define PUBKEY_USAGE_SIG 1 /* key is good for signatures */
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#define PUBKEY_USAGE_ENC 2 /* key is good for encryption */
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#define PUBKEY_USAGE_CERT 4 /* key is also good to certify other keys*/
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#define DIGEST_ALGO_MD5 1
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#define DIGEST_ALGO_SHA1 2
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#define DIGEST_ALGO_RMD160 3
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#define DIGEST_ALGO_TIGER 6
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#define is_RSA(a) ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \
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|| (a)==PUBKEY_ALGO_RSA_S )
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#define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL || (a)==PUBKEY_ALGO_ELGAMAL_E)
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typedef struct {
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int algo;
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int keylen;
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int algo_info_printed;
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int use_mdc;
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byte key[32]; /* this is the largest used keylen (256 bit) */
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} DEK;
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struct cipher_handle_s;
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typedef struct cipher_handle_s *CIPHER_HANDLE;
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#define CIPHER_MODE_ECB 1
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#define CIPHER_MODE_CFB 2
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#define CIPHER_MODE_PHILS_CFB 3
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#define CIPHER_MODE_AUTO_CFB 4
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#define CIPHER_MODE_DUMMY 5 /* used with algo DUMMY for no encryption */
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#define CIPHER_MODE_CBC 6
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struct md_digest_list_s;
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struct gcry_md_context {
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int secure;
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FILE *debug;
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int finalized;
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struct md_digest_list_s *list;
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int bufcount;
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int bufsize;
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byte buffer[1];
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};
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typedef struct gcry_md_context *MD_HANDLE;
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#ifndef EXTERN_UNLESS_MAIN_MODULE
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#if defined (__riscos__) && !defined (INCLUDED_BY_MAIN_MODULE)
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#define EXTERN_UNLESS_MAIN_MODULE extern
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#else
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#define EXTERN_UNLESS_MAIN_MODULE
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#endif
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#endif
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EXTERN_UNLESS_MAIN_MODULE int g10c_debug_mode;
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EXTERN_UNLESS_MAIN_MODULE int g10_opt_verbose;
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EXTERN_UNLESS_MAIN_MODULE const char *g10_opt_homedir;
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/*-- dynload.c --*/
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void register_cipher_extension( const char *mainpgm, const char *fname );
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/*-- md.c --*/
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int string_to_digest_algo( const char *string );
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const char * digest_algo_to_string( int algo );
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int check_digest_algo( int algo );
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MD_HANDLE md_open( int algo, int secure );
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void md_enable( MD_HANDLE hd, int algo );
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MD_HANDLE md_copy( MD_HANDLE a );
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void md_reset( MD_HANDLE a );
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void md_close(MD_HANDLE a);
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void md_write( MD_HANDLE a, const byte *inbuf, size_t inlen);
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void md_final(MD_HANDLE a);
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byte *md_read( MD_HANDLE a, int algo );
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int md_digest( MD_HANDLE a, int algo, byte *buffer, int buflen );
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int md_get_algo( MD_HANDLE a );
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int md_digest_length( int algo );
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const byte *md_asn_oid( int algo, size_t *asnlen, size_t *mdlen );
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void md_start_debug( MD_HANDLE a, const char *suffix );
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void md_stop_debug( MD_HANDLE a );
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#define md_is_secure(a) ((a)->secure)
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#define md_putc(h,c) \
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do { \
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if( (h)->bufcount == (h)->bufsize ) \
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md_write( (h), NULL, 0 ); \
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(h)->buffer[(h)->bufcount++] = (c) & 0xff; \
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} while(0)
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/*-- rmd160.c --*/
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void rmd160_hash_buffer( char *outbuf, const char *buffer, size_t length );
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/*-- cipher.c --*/
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int string_to_cipher_algo( const char *string );
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const char * cipher_algo_to_string( int algo );
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void disable_cipher_algo( int algo );
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int check_cipher_algo( int algo );
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unsigned cipher_get_keylen( int algo );
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unsigned cipher_get_blocksize( int algo );
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CIPHER_HANDLE cipher_open( int algo, int mode, int secure );
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void cipher_close( CIPHER_HANDLE c );
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int cipher_setkey( CIPHER_HANDLE c, byte *key, unsigned keylen );
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void cipher_setiv( CIPHER_HANDLE c, const byte *iv, unsigned ivlen );
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void cipher_encrypt( CIPHER_HANDLE c, byte *out, byte *in, unsigned nbytes );
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void cipher_decrypt( CIPHER_HANDLE c, byte *out, byte *in, unsigned nbytes );
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void cipher_sync( CIPHER_HANDLE c );
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/*-- pubkey.c --*/
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#define PUBKEY_MAX_NPKEY 4
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#define PUBKEY_MAX_NSKEY 6
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#define PUBKEY_MAX_NSIG 2
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#define PUBKEY_MAX_NENC 2
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int string_to_pubkey_algo( const char *string );
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const char * pubkey_algo_to_string( int algo );
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void disable_pubkey_algo( int algo );
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int check_pubkey_algo( int algo );
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int check_pubkey_algo2( int algo, unsigned use );
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int pubkey_get_npkey( int algo );
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int pubkey_get_nskey( int algo );
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int pubkey_get_nsig( int algo );
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int pubkey_get_nenc( int algo );
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unsigned pubkey_nbits( int algo, MPI *pkey );
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int pubkey_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors );
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int pubkey_check_secret_key( int algo, MPI *skey );
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int pubkey_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey );
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int pubkey_decrypt( int algo, MPI *result, MPI *data, MPI *skey );
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int pubkey_sign( int algo, MPI *resarr, MPI hash, MPI *skey );
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int pubkey_verify( int algo, MPI hash, MPI *data, MPI *pkey,
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int (*cmp)(void *, MPI), void *opaque );
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/*-- smallprime.c --*/
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extern ushort small_prime_numbers[];
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/*-- primegen.c --*/
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void register_primegen_progress ( void (*cb)( void *, int), void *cb_data );
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MPI generate_secret_prime( unsigned nbits );
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MPI generate_public_prime( unsigned nbits );
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MPI generate_elg_prime( int mode, unsigned pbits, unsigned qbits,
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MPI g, MPI **factors );
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/*-- elsewhere --*/
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void register_pk_dsa_progress ( void (*cb)( void *, int), void *cb_data );
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void register_pk_elg_progress ( void (*cb)( void *, int), void *cb_data );
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#endif /*G10_CIPHER_H*/
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