sha256.h

00001 /* sha256.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 /* code submitted by raphael.huck@efixo.com */
00024 
00025 #ifndef WOLF_CRYPT_SHA256_H
00026 #define WOLF_CRYPT_SHA256_H
00027 
00028 #include <wolfssl/wolfcrypt/types.h>
00029 
00030 #ifndef NO_SHA256
00031 
00032 #ifdef HAVE_FIPS
00033     /* for fips @wc_fips */
00034     #include <cyassl/ctaocrypt/sha256.h>
00035 #endif
00036 
00037 
00038 #ifdef __cplusplus
00039     extern "C" {
00040 #endif
00041 
00042 #ifndef HAVE_FIPS /* avoid redefinition of structs */
00043 #ifdef WOLFSSL_PIC32MZ_HASH
00044     #include "port/pic32/pic32mz-crypt.h"
00045 #endif
00046 
00047 /* in bytes */
00048 enum {
00049     SHA256              =  2,   /* hash type unique */
00050     SHA256_BLOCK_SIZE   = 64,
00051     SHA256_DIGEST_SIZE  = 32,
00052     SHA256_PAD_SIZE     = 56
00053 };
00054 
00055 #ifndef WOLFSSL_TI_HASH
00056 
00057 /* Sha256 digest */
00058 typedef struct Sha256 {
00059     word32  buffLen;   /* in bytes          */
00060     word32  loLen;     /* length in bytes   */
00061     word32  hiLen;     /* length in bytes   */
00062     word32  digest[SHA256_DIGEST_SIZE / sizeof(word32)];
00063     word32  buffer[SHA256_BLOCK_SIZE  / sizeof(word32)];
00064     #ifdef WOLFSSL_PIC32MZ_HASH
00065         pic32mz_desc desc ; /* Crypt Engine descriptor */
00066     #endif
00067 } Sha256;
00068 
00069 #else /* WOLFSSL_TI_HASH */
00070     #include "wolfssl/wolfcrypt/port/ti/ti-hash.h"
00071 #endif
00072 
00073 #endif /* HAVE_FIPS */
00074 
00075 WOLFSSL_API int wc_InitSha256(Sha256*);
00076 WOLFSSL_API int wc_Sha256Update(Sha256*, const byte*, word32);
00077 WOLFSSL_API int wc_Sha256Final(Sha256*, byte*);
00078 
00079 #ifdef __cplusplus
00080     } /* extern "C" */
00081 #endif
00082 
00083 #endif /* NO_SHA256 */
00084 #endif /* WOLF_CRYPT_SHA256_H */
00085 
00086