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/* Copyright (C) 1998,1999 Nikos Mavroyanopoulos |
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* Encryption/decryption library. This library is free software; |
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* you can redistribute it and/or modify it under the terms of the |
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* GNU Library General Public License as published by the Free Software |
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* Foundation; either version 2 of the License, or (at your option) any |
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* later version. |
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* |
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* This library 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 GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/* $Id: mcrypt.h,v 1.8 1999/11/06 00:29:21 nmav Exp $ */ |
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|
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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#define MCRYPT_FAILED 0x0 |
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|
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#define MCRYPT_BLOWFISH 0 |
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#define MCRYPT_DES 1 |
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#define MCRYPT_TRIPLEDES 2 |
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#define MCRYPT_THREEWAY 3 |
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#define MCRYPT_GOST 4 |
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#define MCRYPT_SAFER_SK64 6 |
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#define MCRYPT_SAFER_SK128 7 |
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#define MCRYPT_CAST_128 8 |
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#define MCRYPT_XTEA 9 |
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#define MCRYPT_RC2 11 |
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#define MCRYPT_TWOFISH 13 |
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#define MCRYPT_CAST_256 17 |
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#define MCRYPT_SAFERPLUS 18 |
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#define MCRYPT_LOKI97 19 |
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#define MCRYPT_SERPENT 22 |
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#define MCRYPT_RIJNDAEL_128 25 |
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#define MCRYPT_RC4 MCRYPT_ARCFOUR |
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#define MCRYPT_ARCFOUR 104 |
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#define MCRYPT_ENIGMA 107 |
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|
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#define MCRYPT_CBC 0 |
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#define MCRYPT_ECB 1 |
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#define MCRYPT_CFB 2 |
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#define MCRYPT_OFB 3 |
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#define MCRYPT_nOFB 4 |
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#define MCRYPT_STREAM 5 |
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|
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struct MCRYPT_INT { |
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word8 *akey; |
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|
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/* For CBC mode */ |
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word32 *previous_ciphertext; |
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word32 *previous_plaintext; |
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word32 *previous_cipher; |
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|
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/* For CFB mode */ |
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word8 *sd_register; |
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word8 *s_register; |
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word8 *enc_s_register; |
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word8 *enc_sd_register; |
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|
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|
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/* hold the key and the algorithm */ |
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word8 *keyword_given; |
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int algorithm_given; |
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int mode_given; |
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}; |
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typedef struct MCRYPT_INT* MCRYPT; |
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|
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typedef struct mcrypt_algorithm_entry mcrypt_algorithm_entry; |
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typedef struct mcrypt_mode_entry mcrypt_mode_entry; |
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|
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#define end_mcrypt_ecb end_mcrypt |
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#define end_mcrypt_stream end_mcrypt |
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|
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/* generic - high level functions. These are a bit slower because |
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* they perform a switch before each call but they have the advantage |
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* of being able to check at run-time which modes are in the library |
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* and use them |
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*/ |
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|
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MCRYPT mcrypt_generic_init(const int mode, |
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const int algorithm, void *key, int lenofkey, void *IV); |
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int mcrypt_generic_end(const MCRYPT td); |
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int mdecrypt_generic(MCRYPT td, void *plaintext, int len); |
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int mcrypt_generic(MCRYPT td, void *plaintext, int len); |
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void mcrypt_generic_term(); |
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|
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/* extra functions */ |
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|
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int mcrypt_get_block_size(int algorithm); |
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int mcrypt_get_key_size(int algorithm); |
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|
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int mcrypt_is_ok_algorithm(int algorithm); /* if this algorithm exists returns 0 */ |
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int mcrypt_is_ok_mode(int mode); /* if this mode exists returns 0 */ |
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int mcrypt_is_block_algorithm(int algorithm); /* If this is a block algorithm returns 1 */ |
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int mcrypt_is_block_algorithm_mode(int mode); |
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int mcrypt_mode_has_iv(int mode); |
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|
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char* mcrypt_get_algorithms_name(int algorithm); |
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char *mcrypt_get_modes_name(int mode); |
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|
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|
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/* Functions used internally and in mcrypt (the program) */ |
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MCRYPT init_mcrypt ( const int mode, const int algorithm, void * key, int lenofkey); |
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int mcrypt(MCRYPT td, void *plaintext); |
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int mdecrypt(MCRYPT td, void *plaintext); |
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int end_mcrypt(MCRYPT td); |
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|
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/* ECB */ |
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MCRYPT init_mcrypt_ecb( const int algorithm, void * key, int lenofkey); |
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int mcrypt_ecb(MCRYPT td, void *plaintext,int len); |
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int mdecrypt_ecb(MCRYPT td, void *plaintext, int); |
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|
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/* CBC */ |
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int end_mcrypt_cbc(MCRYPT td); |
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int mcrypt_cbc(MCRYPT td, void *plaintext, int); |
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int mdecrypt_cbc(MCRYPT td, void *ciphertext, int); |
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MCRYPT init_mcrypt_cbc( const int algorithm, void * key, int lenofkey); |
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MCRYPT init_mcrypt_cbc_iv( const int algorithm, void * key, int lenofkey, void *IV); |
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|
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/* CFB */ |
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int end_mcrypt_cfb(MCRYPT td); |
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int mcrypt_cfb(MCRYPT td, void *plaintext,int len); |
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int mdecrypt_cfb(MCRYPT td, void *ciphertext, int len); |
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MCRYPT init_mcrypt_cfb( const int algorithm, void * key, int lenofkey, void *IV); |
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|
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/* OFB */ |
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int end_mcrypt_ofb(MCRYPT td); |
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int mcrypt_ofb(MCRYPT td, void *plaintext,int len); |
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int mdecrypt_ofb(MCRYPT td, void *ciphertext, int len); |
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MCRYPT init_mcrypt_ofb( const int algorithm, void * key, int lenofkey, void *IV); |
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|
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/* nbit OFB */ |
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MCRYPT init_mcrypt_nofb(const int algorithm, void *key, int lenofkey, void *IV); |
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int mcrypt_nofb(MCRYPT td, void *plaintext, int len); |
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int mdecrypt_nofb(MCRYPT td, void *plaintext, int len); |
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int end_mcrypt_nofb(MCRYPT td); |
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|
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/* STREAM */ |
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MCRYPT init_mcrypt_stream(const int algorithm, void *key, int lenofkey); |
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int mcrypt_stream(MCRYPT td, void *plaintext, int len); |
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int mdecrypt_stream(MCRYPT td, void *ciphertext, int len); |
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|
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#ifdef __cplusplus |
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} |
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#endif |