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90 lines
2.6 KiB
90 lines
2.6 KiB
/** |
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* \file sha2.h |
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* |
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* Copyright (C) 2011, Con Kolivas <kernel@kolivas.org> |
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* Copyright (C) 2006-2010, Brainspark B.V. |
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* |
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* This file is part of PolarSSL (http://www.polarssl.org) |
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
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* |
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* All rights reserved. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (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 along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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#ifndef POLARSSL_SHA2_H |
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#define POLARSSL_SHA2_H |
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#include <stdint.h> |
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/** |
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* \brief SHA-256 context structure |
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*/ |
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typedef struct |
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{ |
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uint32_t total[2]; /*!< number of bytes processed */ |
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uint32_t state[8]; /*!< intermediate digest state */ |
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unsigned char buffer[64]; /*!< data block being processed */ |
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unsigned char ipad[64]; /*!< HMAC: inner padding */ |
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unsigned char opad[64]; /*!< HMAC: outer padding */ |
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int is224; /*!< 0 => SHA-256, else SHA-224 */ |
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} |
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sha2_context; |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/** |
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* \brief SHA-256 context setup |
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* |
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* \param ctx context to be initialized |
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* \param is224 0 = use SHA256, 1 = use SHA224 |
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*/ |
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void sha2_starts( sha2_context *ctx, int is224 ); |
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/** |
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* \brief SHA-256 process buffer |
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* |
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* \param ctx SHA-256 context |
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* \param input buffer holding the data |
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* \param ilen length of the input data |
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*/ |
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void sha2_update( sha2_context *ctx, const unsigned char *input, int ilen ); |
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/** |
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* \brief SHA-256 final digest |
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* |
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* \param ctx SHA-256 context |
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* \param output SHA-224/256 checksum result |
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*/ |
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void sha2_finish( sha2_context *ctx, unsigned char output[32] ); |
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/** |
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* \brief Output = SHA-256( input buffer ) |
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* |
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* \param input buffer holding the data |
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* \param ilen length of the input data |
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* \param output SHA-224/256 checksum result |
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* \param is224 0 = use SHA256, 1 = use SHA224 |
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*/ |
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void sha2( const unsigned char *input, int ilen, |
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unsigned char output[32], int is224 ); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* sha2.h */
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