des3.h

00001 /* des3.h
00002  *
00003  * Copyright (C) 2006-2009 Sawtooth Consulting Ltd.
00004  *
00005  * This file is part of CyaSSL.
00006  *
00007  * CyaSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * CyaSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
00020  */
00021 
00022 #ifndef NO_DES3
00023 
00024 #ifndef CTAO_CRYPT_DES3_H
00025 #define CTAO_CRYPT_DES3_H
00026 
00027 
00028 #include "types.h"
00029 
00030 
00031 #ifdef __cplusplus
00032     extern "C" {
00033 #endif
00034 
00035 enum {
00036     DES_BLOCK_SIZE  = 8,
00037     DES_KS_SIZE     = 32,
00038 
00039     DES_ENCRYPTION  = 0,
00040     DES_DECRYPTION  = 1,
00041 };
00042 
00043 
00044 /* DES encryption and decryption */
00045 typedef struct Des {
00046     word32 key[DES_KS_SIZE];
00047     word32 reg[DES_BLOCK_SIZE / sizeof(word32)];      /* for CBC mode */
00048     word32 tmp[DES_BLOCK_SIZE / sizeof(word32)];      /* same         */
00049 } Des;
00050 
00051 
00052 /* DES3 encryption and decryption */
00053 typedef struct Des3 {
00054     word32 key[3][DES_KS_SIZE];
00055     word32 reg[DES_BLOCK_SIZE / sizeof(word32)];      /* for CBC mode */
00056     word32 tmp[DES_BLOCK_SIZE / sizeof(word32)];      /* same         */
00057 } Des3;
00058 
00059 
00060 void Des_SetKey(Des* des, const byte* key, const byte* iv, int dir);
00061 void Des_CbcEncrypt(Des* des, byte* out, const byte* in, word32 sz);
00062 void Des_CbcDecrypt(Des* des, byte* out, const byte* in, word32 sz);
00063 
00064 void Des3_SetKey(Des3* des, const byte* key, const byte* iv, int dir);
00065 void Des3_CbcEncrypt(Des3* des, byte* out, const byte* in, word32 sz);
00066 void Des3_CbcDecrypt(Des3* des, byte* out, const byte* in, word32 sz);
00067 
00068 
00069 #ifdef __cplusplus
00070     } /* extern "C" */
00071 #endif
00072 
00073 #endif /* NO_DES3 */
00074 #endif /* CTAO_CRYPT_DES3_H */
00075