1/* $OpenBSD: sha.h,v 1.25 2024/06/01 08:11:44 tb Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stddef.h> 60 61#ifndef HEADER_SHA_H 62#define HEADER_SHA_H 63#if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__OpenBSD__) 64#define __bounded__(x, y, z) 65#endif 66 67#include <openssl/opensslconf.h> 68 69#ifdef __cplusplus 70extern "C" { 71#endif 72 73#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1) 74#error SHA is disabled. 75#endif 76 77/* 78 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 79 * ! SHA_LONG has to be at least 32 bits wide. ! 80 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 81 */ 82 83#define SHA_LONG unsigned int 84 85#define SHA_LBLOCK 16 86#define SHA_CBLOCK (SHA_LBLOCK*4) /* SHA treats input data as a 87 * contiguous array of 32 bit 88 * wide big-endian values. */ 89#define SHA_LAST_BLOCK (SHA_CBLOCK-8) 90#define SHA_DIGEST_LENGTH 20 91 92typedef struct SHAstate_st { 93 SHA_LONG h0, h1, h2, h3, h4; 94 SHA_LONG Nl, Nh; 95 SHA_LONG data[SHA_LBLOCK]; 96 unsigned int num; 97} SHA_CTX; 98 99#ifndef OPENSSL_NO_SHA1 100int SHA1_Init(SHA_CTX *c); 101int SHA1_Update(SHA_CTX *c, const void *data, size_t len) 102 __attribute__ ((__bounded__(__buffer__, 2, 3))); 103int SHA1_Final(unsigned char *md, SHA_CTX *c); 104unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md) 105 __attribute__ ((__bounded__(__buffer__, 1, 2))) 106 __attribute__ ((__nonnull__(3))); 107void SHA1_Transform(SHA_CTX *c, const unsigned char *data); 108#endif 109 110#define SHA256_CBLOCK (SHA_LBLOCK*4) /* SHA-256 treats input data as a 111 * contiguous array of 32 bit 112 * wide big-endian values. */ 113#define SHA224_DIGEST_LENGTH 28 114#define SHA256_DIGEST_LENGTH 32 115 116typedef struct SHA256state_st { 117 SHA_LONG h[8]; 118 SHA_LONG Nl, Nh; 119 SHA_LONG data[SHA_LBLOCK]; 120 unsigned int num, md_len; 121} SHA256_CTX; 122 123#ifndef OPENSSL_NO_SHA256 124int SHA224_Init(SHA256_CTX *c); 125int SHA224_Update(SHA256_CTX *c, const void *data, size_t len) 126 __attribute__ ((__bounded__(__buffer__, 2, 3))); 127int SHA224_Final(unsigned char *md, SHA256_CTX *c); 128unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md) 129 __attribute__ ((__bounded__(__buffer__, 1, 2))) 130 __attribute__ ((__nonnull__(3))); 131int SHA256_Init(SHA256_CTX *c); 132int SHA256_Update(SHA256_CTX *c, const void *data, size_t len) 133 __attribute__ ((__bounded__(__buffer__, 2, 3))); 134int SHA256_Final(unsigned char *md, SHA256_CTX *c); 135unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md) 136 __attribute__ ((__bounded__(__buffer__, 1, 2))) 137 __attribute__ ((__nonnull__(3))); 138void SHA256_Transform(SHA256_CTX *c, const unsigned char *data); 139#endif 140 141#define SHA384_DIGEST_LENGTH 48 142#define SHA512_DIGEST_LENGTH 64 143 144#ifndef OPENSSL_NO_SHA512 145/* 146 * Unlike 32-bit digest algorithms, SHA-512 *relies* on SHA_LONG64 147 * being exactly 64-bit wide. See Implementation Notes in sha512.c 148 * for further details. 149 */ 150#define SHA512_CBLOCK (SHA_LBLOCK*8) /* SHA-512 treats input data as a 151 * contiguous array of 64 bit 152 * wide big-endian values. */ 153#if defined(_LP64) 154#define SHA_LONG64 unsigned long 155#define U64(C) C##UL 156#else 157#define SHA_LONG64 unsigned long long 158#define U64(C) C##ULL 159#endif 160 161typedef struct SHA512state_st { 162 SHA_LONG64 h[8]; 163 SHA_LONG64 Nl, Nh; 164 union { 165 SHA_LONG64 d[SHA_LBLOCK]; 166 unsigned char p[SHA512_CBLOCK]; 167 } u; 168 unsigned int num, md_len; 169} SHA512_CTX; 170#endif 171 172#ifndef OPENSSL_NO_SHA512 173int SHA384_Init(SHA512_CTX *c); 174int SHA384_Update(SHA512_CTX *c, const void *data, size_t len) 175 __attribute__ ((__bounded__(__buffer__, 2, 3))); 176int SHA384_Final(unsigned char *md, SHA512_CTX *c); 177unsigned char *SHA384(const unsigned char *d, size_t n, unsigned char *md) 178 __attribute__ ((__bounded__(__buffer__, 1, 2))) 179 __attribute__ ((__nonnull__(3))); 180int SHA512_Init(SHA512_CTX *c); 181int SHA512_Update(SHA512_CTX *c, const void *data, size_t len) 182 __attribute__ ((__bounded__(__buffer__, 2, 3))); 183int SHA512_Final(unsigned char *md, SHA512_CTX *c); 184unsigned char *SHA512(const unsigned char *d, size_t n, unsigned char *md) 185 __attribute__ ((__bounded__(__buffer__, 1, 2))) 186 __attribute__ ((__nonnull__(3))); 187void SHA512_Transform(SHA512_CTX *c, const unsigned char *data); 188#endif 189 190#ifdef __cplusplus 191} 192#endif 193 194#endif 195