sha256.h

00001 /* sha256.h
00002  *
00003  * Copyright (C) 2006-2014 wolfSSL Inc.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 <cyassl/ctaocrypt/types.h>
00032 
00033 #ifdef __cplusplus
00034     extern "C" {
00035 #endif
00036 
00037 #ifdef CYASSL_PIC32MZ_HASH
00038 #include "port/pic32/pic32mz-crypt.h"
00039 #endif
00040 
00041 
00042 /* in bytes */
00043 enum {
00044     SHA256              =  2,   /* hash type unique */
00045     SHA256_BLOCK_SIZE   = 64,
00046     SHA256_DIGEST_SIZE  = 32,
00047     SHA256_PAD_SIZE     = 56
00048 };
00049 
00050 
00051 /* Sha256 digest */
00052 typedef struct Sha256 {
00053     word32  buffLen;   /* in bytes          */
00054     word32  loLen;     /* length in bytes   */
00055     word32  hiLen;     /* length in bytes   */
00056     word32  digest[SHA256_DIGEST_SIZE / sizeof(word32)];
00057     word32  buffer[SHA256_BLOCK_SIZE  / sizeof(word32)];
00058     #ifdef CYASSL_PIC32MZ_HASH
00059         pic32mz_desc desc ; /* Crypt Engine descripter */
00060     #endif
00061 } Sha256;
00062 
00063 
00064 CYASSL_API int  InitSha256(Sha256*);
00065 CYASSL_API int  Sha256Update(Sha256*, const byte*, word32);
00066 CYASSL_API int  Sha256Final(Sha256*, byte*);
00067 
00068 
00069 #ifdef HAVE_FIPS
00070     /* fips wrapper calls, user can call direct */
00071     CYASSL_API int InitSha256_fips(Sha256*);
00072     CYASSL_API int Sha256Update_fips(Sha256*, const byte*, word32);
00073     CYASSL_API int Sha256Final_fips(Sha256*, byte*);
00074     #ifndef FIPS_NO_WRAPPERS
00075         /* if not impl or fips.c impl wrapper force fips calls if fips build */
00076         #define InitSha256   InitSha256_fips
00077         #define Sha256Update Sha256Update_fips
00078         #define Sha256Final  Sha256Final_fips
00079     #endif /* FIPS_NO_WRAPPERS */
00080 
00081 #endif /* HAVE_FIPS */
00082 
00083  
00084 #ifdef __cplusplus
00085     } /* extern "C" */
00086 #endif
00087 
00088 #endif /* CTAO_CRYPT_SHA256_H */
00089 #endif /* NO_SHA256 */
00090 
00091