73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
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/**
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* @file sha256.h
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* @brief SHA-256 (Secure Hash Algorithm 256)
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*
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* @section License
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*
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* Copyright (C) 2010-2014 Oryx Embedded. All rights reserved.
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*
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* This file is part of CycloneCrypto Open.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* @author Oryx Embedded (www.oryx-embedded.com)
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* @version 1.5.0
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**/
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#ifndef _SHA256_H
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#define _SHA256_H
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//Dependencies
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#include "crypto.h"
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//SHA-256 block size
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#define SHA256_BLOCK_SIZE 64
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//SHA-256 digest size
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#define SHA256_DIGEST_SIZE 32
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//Common interface for hash algorithms
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#define SHA256_HASH_ALGO (&sha256HashAlgo)
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/**
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* @brief SHA-256 algorithm context
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**/
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typedef struct {
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union {
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u32 h[8];
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u8 digest[32];
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};
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union {
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u32 w[64];
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u8 buffer[64];
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};
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int size;
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u64 totalSize;
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} Sha256Context;
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//SHA-256 related constants
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extern const HashAlgo sha256HashAlgo;
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//SHA-256 related functions
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int sha256Compute(const void *data, int length, u8 *digest);
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void sha256Init(Sha256Context *context);
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void sha256Update(Sha256Context *context, const void *data, int length);
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void sha256Final(Sha256Context *context, u8 *digest);
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void sha256ProcessBlock(Sha256Context *context);
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#endif
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