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/* sha256.h
*
* Copyright (C) 2006-2014 wolfSSL Inc.
*
* This file is part of CyaSSL.
*
* CyaSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* CyaSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* code submitted by raphael.huck@efixo.com */
#ifndef NO_SHA256
#ifndef CTAO_CRYPT_SHA256_H
#define CTAO_CRYPT_SHA256_H
#include <cyassl/ctaocrypt/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef CYASSL_PIC32MZ_HASH
#include "port/pic32/pic32mz-crypt.h"
#endif
/* in bytes */
enum {
SHA256 = 2, /* hash type unique */
SHA256_BLOCK_SIZE = 64,
SHA256_DIGEST_SIZE = 32,
SHA256_PAD_SIZE = 56
};
/* Sha256 digest */
typedef struct Sha256 {
word32 buffLen; /* in bytes */
word32 loLen; /* length in bytes */
word32 hiLen; /* length in bytes */
word32 digest[SHA256_DIGEST_SIZE / sizeof(word32)];
word32 buffer[SHA256_BLOCK_SIZE / sizeof(word32)];
#ifdef CYASSL_PIC32MZ_HASH
pic32mz_desc desc ; /* Crypt Engine descripter */
#endif
} Sha256;
CYASSL_API int InitSha256(Sha256*);
CYASSL_API int Sha256Update(Sha256*, const byte*, word32);
CYASSL_API int Sha256Final(Sha256*, byte*);
CYASSL_API int Sha256Hash(const byte*, word32, byte*);
#ifdef HAVE_FIPS
/* fips wrapper calls, user can call direct */
CYASSL_API int InitSha256_fips(Sha256*);
CYASSL_API int Sha256Update_fips(Sha256*, const byte*, word32);
CYASSL_API int Sha256Final_fips(Sha256*, byte*);
#ifndef FIPS_NO_WRAPPERS
/* if not impl or fips.c impl wrapper force fips calls if fips build */
#define InitSha256 InitSha256_fips
#define Sha256Update Sha256Update_fips
#define Sha256Final Sha256Final_fips
#endif /* FIPS_NO_WRAPPERS */
#endif /* HAVE_FIPS */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* CTAO_CRYPT_SHA256_H */
#endif /* NO_SHA256 */