sha.h

00001 /* sha.h
00002  *
00003  * Copyright (C) 2006-2012 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 
00023 #ifndef CTAO_CRYPT_SHA_H
00024 #define CTAO_CRYPT_SHA_H
00025 
00026 #include <cyassl/ctaocrypt/types.h>
00027 
00028 #ifdef __cplusplus
00029     extern "C" {
00030 #endif
00031 
00032 
00033 /* in bytes */
00034 enum {
00035 #ifdef STM32F2_CRYPTO
00036     SHA_REG_SIZE     =  4,    /* STM32 register size, bytes */
00037 #endif
00038     SHA              =  1,    /* hash type unique */
00039     SHA_BLOCK_SIZE   = 64,
00040     SHA_DIGEST_SIZE  = 20,
00041     SHA_PAD_SIZE     = 56
00042 };
00043 
00044 
00045 /* Sha digest */
00046 typedef struct Sha {
00047     word32  buffLen;   /* in bytes          */
00048     word32  loLen;     /* length in bytes   */
00049     word32  hiLen;     /* length in bytes   */
00050     word32  digest[SHA_DIGEST_SIZE / sizeof(word32)];
00051     word32  buffer[SHA_BLOCK_SIZE  / sizeof(word32)];
00052 } Sha;
00053 
00054 
00055 CYASSL_API void InitSha(Sha*);
00056 CYASSL_API void ShaUpdate(Sha*, const byte*, word32);
00057 CYASSL_API void ShaFinal(Sha*, byte*);
00058 
00059 
00060 #ifdef __cplusplus
00061     } /* extern "C" */
00062 #endif
00063 
00064 #endif /* CTAO_CRYPT_SHA_H */
00065