1/* $OpenBSD: sha2.h,v 1.5 2014/11/16 17:39:09 tedu 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 41/*** SHA-256/384/512 Various Length Definitions ***********************/ 42#define SHA256_BLOCK_LENGTH 64 43#define SHA256_DIGEST_LENGTH 32 44#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1) 45#define SHA384_BLOCK_LENGTH 128 46#define SHA384_DIGEST_LENGTH 48 47#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1) 48#define SHA512_BLOCK_LENGTH 128 49#define SHA512_DIGEST_LENGTH 64 50#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1) 51 52 53/*** SHA-256/384/512 Context Structure *******************************/ 54typedef struct _SHA2_CTX { 55 union { 56 u_int32_t st32[8]; 57 u_int64_t st64[8]; 58 } state; 59 u_int64_t bitcount[2]; 60 u_int8_t buffer[SHA512_BLOCK_LENGTH]; 61} SHA2_CTX; 62 63__BEGIN_DECLS 64void SHA256Init(SHA2_CTX *); 65void SHA256Update(SHA2_CTX *, const void *, size_t) 66 __attribute__((__bounded__(__string__,2,3))); 67void SHA256Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA2_CTX *) 68 __attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH))); 69 70void SHA384Init(SHA2_CTX *); 71void SHA384Update(SHA2_CTX *, const void *, size_t) 72 __attribute__((__bounded__(__string__,2,3))); 73void SHA384Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA2_CTX *) 74 __attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH))); 75 76void SHA512Init(SHA2_CTX *); 77void SHA512Update(SHA2_CTX *, const void *, size_t) 78 __attribute__((__bounded__(__string__,2,3))); 79void SHA512Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA2_CTX *) 80 __attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH))); 81__END_DECLS 82 83#endif /* _SHA2_H */ 84