des3.h

00001 /* des3.h
00002  *
00003  * Copyright (C) 2006-2016 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL 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  * wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 #ifndef WOLF_CRYPT_DES3_H
00024 #define WOLF_CRYPT_DES3_H
00025 
00026 #include <wolfssl/wolfcrypt/types.h>
00027 
00028 #ifndef NO_DES3
00029 
00030 #ifdef HAVE_FIPS
00031 /* included for fips @wc_fips */
00032 #include <cyassl/ctaocrypt/des3.h>
00033 #endif
00034 
00035 #ifdef __cplusplus
00036     extern "C" {
00037 #endif
00038 
00039 #ifndef HAVE_FIPS /* to avoid redefinition of macros */
00040 
00041 #ifdef WOLFSSL_ASYNC_CRYPT
00042     #include <wolfssl/wolfcrypt/async.h>
00043 #endif
00044 
00045 enum {
00046     DES_ENC_TYPE    = 2,     /* cipher unique type */
00047     DES3_ENC_TYPE   = 3,     /* cipher unique type */
00048     DES_BLOCK_SIZE  = 8,
00049     DES_KS_SIZE     = 32,
00050 
00051     DES_ENCRYPTION  = 0,
00052     DES_DECRYPTION  = 1
00053 };
00054 
00055 #define DES_IVLEN 8
00056 #define DES_KEYLEN 8
00057 #define DES3_IVLEN 8
00058 #define DES3_KEYLEN 24
00059 
00060 
00061 #if defined(STM32F2_CRYPTO) || defined(STM32F4_CRYPTO)
00062 enum {
00063     DES_CBC = 0,
00064     DES_ECB = 1
00065 };
00066 #endif
00067 
00068 
00069 /* DES encryption and decryption */
00070 typedef struct Des {
00071     word32 reg[DES_BLOCK_SIZE / sizeof(word32)];      /* for CBC mode */
00072     word32 tmp[DES_BLOCK_SIZE / sizeof(word32)];      /* same         */
00073     word32 key[DES_KS_SIZE];
00074 } Des;
00075 
00076 
00077 /* DES3 encryption and decryption */
00078 typedef struct Des3 {
00079     word32 key[3][DES_KS_SIZE];
00080     word32 reg[DES_BLOCK_SIZE / sizeof(word32)];      /* for CBC mode */
00081     word32 tmp[DES_BLOCK_SIZE / sizeof(word32)];      /* same         */
00082 #ifdef WOLFSSL_ASYNC_CRYPT
00083     const byte* key_raw;
00084     const byte* iv_raw;
00085     WC_ASYNC_DEV asyncDev;
00086 #endif
00087     void* heap;
00088 } Des3;
00089 #endif /* HAVE_FIPS */
00090 
00091 
00092 WOLFSSL_API int  wc_Des_SetKey(Des* des, const byte* key,
00093                                const byte* iv, int dir);
00094 WOLFSSL_API void wc_Des_SetIV(Des* des, const byte* iv);
00095 WOLFSSL_API int  wc_Des_CbcEncrypt(Des* des, byte* out,
00096                                    const byte* in, word32 sz);
00097 WOLFSSL_API int  wc_Des_CbcDecrypt(Des* des, byte* out,
00098                                    const byte* in, word32 sz);
00099 WOLFSSL_API int  wc_Des_EcbEncrypt(Des* des, byte* out,
00100                                    const byte* in, word32 sz);
00101 WOLFSSL_API int wc_Des3_EcbEncrypt(Des3* des, byte* out,
00102                                    const byte* in, word32 sz);
00103 
00104 /* ECB decrypt same process as encrypt but with decrypt key */
00105 #define wc_Des_EcbDecrypt  wc_Des_EcbEncrypt
00106 #define wc_Des3_EcbDecrypt wc_Des3_EcbEncrypt
00107 
00108 WOLFSSL_API int  wc_Des3_SetKey(Des3* des, const byte* key,
00109                                 const byte* iv,int dir);
00110 WOLFSSL_API int  wc_Des3_SetIV(Des3* des, const byte* iv);
00111 WOLFSSL_API int  wc_Des3_CbcEncrypt(Des3* des, byte* out,
00112                                     const byte* in,word32 sz);
00113 WOLFSSL_API int  wc_Des3_CbcDecrypt(Des3* des, byte* out,
00114                                     const byte* in,word32 sz);
00115 
00116 /* These are only required when using either:
00117   static memory (WOLFSSL_STATIC_MEMORY) or asynchronous (WOLFSSL_ASYNC_CRYPT) */
00118 WOLFSSL_API int  wc_Des3Init(Des3*, void*, int);
00119 WOLFSSL_API void wc_Des3Free(Des3*);
00120 
00121 #ifdef __cplusplus
00122     } /* extern "C" */
00123 #endif
00124 
00125 #endif /* NO_DES3 */
00126 #endif /* WOLF_CRYPT_DES3_H */
00127 
00128