1 /** 2 * \file sha4.h 3 * 4 * Copyright (C) 2011, Con Kolivas <kernel@kolivas.org> 5 * Copyright (C) 2006-2010, Brainspark B.V. 6 * 7 * This file is part of PolarSSL (http://www.polarssl.org) 8 * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> 9 * 10 * All rights reserved. 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License along 23 * with this program; if not, write to the Free Software Foundation, Inc., 24 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 25 */ 26 #ifndef POLARSSL_SHA4_H 27 #define POLARSSL_SHA4_H 28 29 #if defined(_MSC_VER) || defined(__WATCOMC__) 30 #define UL64(x) x##ui64 31 #define int64 __int64 32 #else 33 #define UL64(x) x##ULL 34 #define int64 long long 35 #endif 36 37 /** 38 * \brief SHA-512 context structure 39 */ 40 typedef struct 41 { 42 unsigned int64 total[2]; /*!< number of bytes processed */ 43 unsigned int64 state[8]; /*!< intermediate digest state */ 44 unsigned char buffer[128]; /*!< data block being processed */ 45 46 unsigned char ipad[128]; /*!< HMAC: inner padding */ 47 unsigned char opad[128]; /*!< HMAC: outer padding */ 48 int is384; /*!< 0 => SHA-512, else SHA-384 */ 49 } 50 sha4_context; 51 52 #ifdef __cplusplus 53 extern "C" { 54 #endif 55 56 /** 57 * \brief SHA-512 context setup 58 * 59 * \param ctx context to be initialized 60 * \param is384 0 = use SHA512, 1 = use SHA384 61 */ 62 void sha4_starts( sha4_context *ctx, int is384 ); 63 64 /** 65 * \brief SHA-512 process buffer 66 * 67 * \param ctx SHA-512 context 68 * \param input buffer holding the data 69 * \param ilen length of the input data 70 */ 71 void sha4_update( sha4_context *ctx, const unsigned char *input, int ilen ); 72 73 /** 74 * \brief SHA-512 final digest 75 * 76 * \param ctx SHA-512 context 77 * \param output SHA-384/512 checksum result 78 */ 79 void sha4_finish( sha4_context *ctx, unsigned char output[64] ); 80 81 /** 82 * \brief Output = SHA-512( input buffer ) 83 * 84 * \param input buffer holding the data 85 * \param ilen length of the input data 86 * \param output SHA-384/512 checksum result 87 * \param is384 0 = use SHA512, 1 = use SHA384 88 */ 89 void sha4( const unsigned char *input, int ilen, 90 unsigned char output[64], int is384 ); 91 92 #ifdef __cplusplus 93 } 94 #endif 95 96 #endif /* sha4.h */ 97