1 /* 2 * FIPS 180-2 SHA-224/256/384/512 implementation 3 * Last update: 02/02/2007 4 * Issue date: 04/30/2005 5 * 6 * Since this code has been incorporated into a GPLv2 project, it is 7 * distributed under GPLv2 inside mmc-utils. The original BSD license 8 * that the code was released under is included below for clarity. 9 * 10 * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay (at) a3.epfl.ch> 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the project nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 #ifndef SHA2_H 39 #define SHA2_H 40 41 #define SHA224_DIGEST_SIZE ( 224 / 8) 42 #define SHA256_DIGEST_SIZE ( 256 / 8) 43 #define SHA384_DIGEST_SIZE ( 384 / 8) 44 #define SHA512_DIGEST_SIZE ( 512 / 8) 45 46 #define SHA256_BLOCK_SIZE ( 512 / 8) 47 #define SHA512_BLOCK_SIZE (1024 / 8) 48 #define SHA384_BLOCK_SIZE SHA512_BLOCK_SIZE 49 #define SHA224_BLOCK_SIZE SHA256_BLOCK_SIZE 50 51 #ifndef SHA2_TYPES 52 #define SHA2_TYPES 53 typedef unsigned char uint8; 54 typedef unsigned int uint32; 55 typedef unsigned long long uint64; 56 #endif 57 58 #ifdef __cplusplus 59 extern "C" { 60 #endif 61 62 typedef struct { 63 unsigned int tot_len; 64 unsigned int len; 65 unsigned char block[2 * SHA256_BLOCK_SIZE]; 66 uint32 h[8]; 67 } sha256_ctx; 68 69 typedef struct { 70 unsigned int tot_len; 71 unsigned int len; 72 unsigned char block[2 * SHA512_BLOCK_SIZE]; 73 uint64 h[8]; 74 } sha512_ctx; 75 76 typedef sha512_ctx sha384_ctx; 77 typedef sha256_ctx sha224_ctx; 78 79 void sha224_init(sha224_ctx *ctx); 80 void sha224_update(sha224_ctx *ctx, const unsigned char *message, 81 unsigned int len); 82 void sha224_final(sha224_ctx *ctx, unsigned char *digest); 83 void sha224(const unsigned char *message, unsigned int len, 84 unsigned char *digest); 85 86 void sha256_init(sha256_ctx * ctx); 87 void sha256_update(sha256_ctx *ctx, const unsigned char *message, 88 unsigned int len); 89 void sha256_final(sha256_ctx *ctx, unsigned char *digest); 90 void sha256(const unsigned char *message, unsigned int len, 91 unsigned char *digest); 92 93 void sha384_init(sha384_ctx *ctx); 94 void sha384_update(sha384_ctx *ctx, const unsigned char *message, 95 unsigned int len); 96 void sha384_final(sha384_ctx *ctx, unsigned char *digest); 97 void sha384(const unsigned char *message, unsigned int len, 98 unsigned char *digest); 99 100 void sha512_init(sha512_ctx *ctx); 101 void sha512_update(sha512_ctx *ctx, const unsigned char *message, 102 unsigned int len); 103 void sha512_final(sha512_ctx *ctx, unsigned char *digest); 104 void sha512(const unsigned char *message, unsigned int len, 105 unsigned char *digest); 106 107 #ifdef __cplusplus 108 } 109 #endif 110 111 #endif /* !SHA2_H */ 112 113
