sha256.h

00001 /* sha256.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 
00023 /* code submitted by raphael.huck@efixo.com */
00024 
00025 
00026 #ifndef NO_SHA256
00027 
00028 #ifndef CTAO_CRYPT_SHA256_H
00029 #define CTAO_CRYPT_SHA256_H
00030 
00031 #include "types.h"
00032 
00033 #ifdef __cplusplus
00034     extern "C" {
00035 #endif
00036 
00037 
00038 
00039 /* in bytes */
00040 enum {
00041     SHA256              =  2,   /* hash type unique */
00042     SHA256_BLOCK_SIZE   = 64,
00043     SHA256_DIGEST_SIZE  = 32,
00044     SHA256_PAD_SIZE     = 56
00045 };
00046 
00047 
00048 /* Sha256 digest */
00049 typedef struct Sha256 {
00050     word32  buffLen;   /* in bytes          */
00051     word32  loLen;     /* length in bytes   */
00052     word32  hiLen;     /* length in bytes   */
00053     word32  digest[SHA256_DIGEST_SIZE / sizeof(word32)];
00054     word32  buffer[SHA256_BLOCK_SIZE  / sizeof(word32)];
00055 } Sha256;
00056 
00057 
00058 void InitSha256(Sha256*);
00059 void Sha256Update(Sha256*, const byte*, word32);
00060 void Sha256Final(Sha256*, byte*);
00061 
00062 
00063 #ifdef __cplusplus
00064     } /* extern "C" */
00065 #endif
00066 
00067 #endif /* CTAO_CRYPT_SHA256_H */
00068 #endif /* NO_SHA256 */
00069