sha2.h (3080B)
1 /* $OpenBSD: sha2.h,v 1.9 2013/04/15 15:54:17 millert Exp $ */ 2 3 /* 4 * FILE: sha2.h 5 * AUTHOR: Aaron D. Gifford <me@aarongifford.com> 6 * 7 * Copyright (c) 2000-2001, Aaron D. Gifford 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the copyright holder nor the names of contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $ 35 */ 36 37 #ifndef _SHA2_H 38 #define _SHA2_H 39 40 #include <stdint.h> 41 42 /*** SHA-256/384/512 Various Length Definitions ***********************/ 43 #define SHA256_BLOCK_LENGTH 64 44 #define SHA256_DIGEST_LENGTH 32 45 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1) 46 #define SHA256_PATTERN "%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x%x" 47 #define SHA512_BLOCK_LENGTH 128 48 #define SHA512_DIGEST_LENGTH 64 49 #define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1) 50 51 52 /*** SHA-224/256/384/512 Context Structure *******************************/ 53 typedef struct _SHA2_CTX { 54 union { 55 uint32_t st32[8]; 56 uint64_t st64[8]; 57 } state; 58 uint64_t bitcount[2]; 59 uint8_t buffer[SHA512_BLOCK_LENGTH]; 60 } SHA2_CTX; 61 62 void SHA256Init(SHA2_CTX *); 63 void SHA256Transform(uint32_t state[8], const uint8_t [SHA256_BLOCK_LENGTH]); 64 void SHA256Update(SHA2_CTX *, const uint8_t *, size_t); 65 void SHA256Pad(SHA2_CTX *); 66 void SHA256Final(uint8_t [SHA256_DIGEST_LENGTH], SHA2_CTX *); 67 68 void SHA512Init(SHA2_CTX *); 69 void SHA512Transform(uint64_t state[8], const uint8_t [SHA512_BLOCK_LENGTH]); 70 void SHA512Update(SHA2_CTX *, const uint8_t *, size_t); 71 void SHA512Pad(SHA2_CTX *); 72 void SHA512Final(uint8_t [SHA512_DIGEST_LENGTH], SHA2_CTX *); 73 74 #endif /* _SHA2_H */