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