1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #ifndef OPENSSL_HEADER_SHA_H 58 #define OPENSSL_HEADER_SHA_H 59 60 #include <openssl/base.h> 61 62 #if defined(__cplusplus) 63 extern "C" { 64 #endif 65 66 67 /* The SHA family of hash functions (SHA-1 and SHA-2). */ 68 69 70 /* SHA_CBLOCK is the block size of SHA-1. */ 71 #define SHA_CBLOCK 64 72 73 /* SHA_DIGEST_LENGTH is the length of a SHA-1 digest. */ 74 #define SHA_DIGEST_LENGTH 20 75 76 /* SHA1_Init initialises |sha| and returns one. */ 77 OPENSSL_EXPORT int SHA1_Init(SHA_CTX *sha); 78 79 /* SHA1_Update adds |len| bytes from |data| to |sha| and returns one. */ 80 OPENSSL_EXPORT int SHA1_Update(SHA_CTX *sha, const void *data, size_t len); 81 82 /* SHA1_Final adds the final padding to |sha| and writes the resulting digest 83 * to |md|, which must have at least |SHA_DIGEST_LENGTH| bytes of space. It 84 * returns one. */ 85 OPENSSL_EXPORT int SHA1_Final(uint8_t *md, SHA_CTX *sha); 86 87 /* SHA1 writes the digest of |len| bytes from |data| to |out| and returns 88 * |out|. There must be at least |SHA_DIGEST_LENGTH| bytes of space in 89 * |out|. */ 90 OPENSSL_EXPORT uint8_t *SHA1(const uint8_t *data, size_t len, uint8_t *out); 91 92 /* SHA1_Transform is a low-level function that performs a single, SHA-1 block 93 * transformation using the state from |sha| and |SHA_CBLOCK| bytes from 94 * |block|. */ 95 OPENSSL_EXPORT void SHA1_Transform(SHA_CTX *sha, const uint8_t *block); 96 97 struct sha_state_st { 98 #if defined(OPENSSL_WINDOWS) 99 uint32_t h[5]; 100 #else 101 /* wpa_supplicant accesses |h0|..|h4| so we must support those names 102 * for compatibility with it until it can be updated. */ 103 union { 104 uint32_t h[5]; 105 struct { 106 uint32_t h0; 107 uint32_t h1; 108 uint32_t h2; 109 uint32_t h3; 110 uint32_t h4; 111 }; 112 }; 113 #endif 114 uint32_t Nl, Nh; 115 uint8_t data[SHA_CBLOCK]; 116 unsigned num; 117 }; 118 119 120 /* SHA-224. */ 121 122 /* SHA224_CBLOCK is the block size of SHA-224. */ 123 #define SHA224_CBLOCK 64 124 125 /* SHA224_DIGEST_LENGTH is the length of a SHA-224 digest. */ 126 #define SHA224_DIGEST_LENGTH 28 127 128 /* SHA224_Init initialises |sha| and returns 1. */ 129 OPENSSL_EXPORT int SHA224_Init(SHA256_CTX *sha); 130 131 /* SHA224_Update adds |len| bytes from |data| to |sha| and returns 1. */ 132 OPENSSL_EXPORT int SHA224_Update(SHA256_CTX *sha, const void *data, size_t len); 133 134 /* SHA224_Final adds the final padding to |sha| and writes the resulting digest 135 * to |md|, which must have at least |SHA224_DIGEST_LENGTH| bytes of space. It 136 * returns one on success and zero on programmer error. */ 137 OPENSSL_EXPORT int SHA224_Final(uint8_t *md, SHA256_CTX *sha); 138 139 /* SHA224 writes the digest of |len| bytes from |data| to |out| and returns 140 * |out|. There must be at least |SHA224_DIGEST_LENGTH| bytes of space in 141 * |out|. */ 142 OPENSSL_EXPORT uint8_t *SHA224(const uint8_t *data, size_t len, uint8_t *out); 143 144 145 /* SHA-256. */ 146 147 /* SHA256_CBLOCK is the block size of SHA-256. */ 148 #define SHA256_CBLOCK 64 149 150 /* SHA256_DIGEST_LENGTH is the length of a SHA-256 digest. */ 151 #define SHA256_DIGEST_LENGTH 32 152 153 /* SHA256_Init initialises |sha| and returns 1. */ 154 OPENSSL_EXPORT int SHA256_Init(SHA256_CTX *sha); 155 156 /* SHA256_Update adds |len| bytes from |data| to |sha| and returns 1. */ 157 OPENSSL_EXPORT int SHA256_Update(SHA256_CTX *sha, const void *data, size_t len); 158 159 /* SHA256_Final adds the final padding to |sha| and writes the resulting digest 160 * to |md|, which must have at least |SHA256_DIGEST_LENGTH| bytes of space. It 161 * returns one on success and zero on programmer error. */ 162 OPENSSL_EXPORT int SHA256_Final(uint8_t *md, SHA256_CTX *sha); 163 164 /* SHA256 writes the digest of |len| bytes from |data| to |out| and returns 165 * |out|. There must be at least |SHA256_DIGEST_LENGTH| bytes of space in 166 * |out|. */ 167 OPENSSL_EXPORT uint8_t *SHA256(const uint8_t *data, size_t len, uint8_t *out); 168 169 /* SHA256_Transform is a low-level function that performs a single, SHA-256 170 * block transformation using the state from |sha| and |SHA256_CBLOCK| bytes 171 * from |block|. */ 172 OPENSSL_EXPORT void SHA256_Transform(SHA256_CTX *sha, const uint8_t *block); 173 174 struct sha256_state_st { 175 uint32_t h[8]; 176 uint32_t Nl, Nh; 177 uint8_t data[SHA256_CBLOCK]; 178 unsigned num, md_len; 179 }; 180 181 182 /* SHA-384. */ 183 184 /* SHA384_CBLOCK is the block size of SHA-384. */ 185 #define SHA384_CBLOCK 128 186 187 /* SHA384_DIGEST_LENGTH is the length of a SHA-384 digest. */ 188 #define SHA384_DIGEST_LENGTH 48 189 190 /* SHA384_Init initialises |sha| and returns 1. */ 191 OPENSSL_EXPORT int SHA384_Init(SHA512_CTX *sha); 192 193 /* SHA384_Update adds |len| bytes from |data| to |sha| and returns 1. */ 194 OPENSSL_EXPORT int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len); 195 196 /* SHA384_Final adds the final padding to |sha| and writes the resulting digest 197 * to |md|, which must have at least |SHA384_DIGEST_LENGTH| bytes of space. It 198 * returns one on success and zero on programmer error. */ 199 OPENSSL_EXPORT int SHA384_Final(uint8_t *md, SHA512_CTX *sha); 200 201 /* SHA384 writes the digest of |len| bytes from |data| to |out| and returns 202 * |out|. There must be at least |SHA384_DIGEST_LENGTH| bytes of space in 203 * |out|. */ 204 OPENSSL_EXPORT uint8_t *SHA384(const uint8_t *data, size_t len, uint8_t *out); 205 206 /* SHA384_Transform is a low-level function that performs a single, SHA-384 207 * block transformation using the state from |sha| and |SHA384_CBLOCK| bytes 208 * from |block|. */ 209 OPENSSL_EXPORT void SHA384_Transform(SHA512_CTX *sha, const uint8_t *block); 210 211 212 /* SHA-512. */ 213 214 /* SHA512_CBLOCK is the block size of SHA-512. */ 215 #define SHA512_CBLOCK 128 216 217 /* SHA512_DIGEST_LENGTH is the length of a SHA-512 digest. */ 218 #define SHA512_DIGEST_LENGTH 64 219 220 /* SHA512_Init initialises |sha| and returns 1. */ 221 OPENSSL_EXPORT int SHA512_Init(SHA512_CTX *sha); 222 223 /* SHA512_Update adds |len| bytes from |data| to |sha| and returns 1. */ 224 OPENSSL_EXPORT int SHA512_Update(SHA512_CTX *sha, const void *data, size_t len); 225 226 /* SHA512_Final adds the final padding to |sha| and writes the resulting digest 227 * to |md|, which must have at least |SHA512_DIGEST_LENGTH| bytes of space. It 228 * returns one on success and zero on programmer error. */ 229 OPENSSL_EXPORT int SHA512_Final(uint8_t *md, SHA512_CTX *sha); 230 231 /* SHA512 writes the digest of |len| bytes from |data| to |out| and returns 232 * |out|. There must be at least |SHA512_DIGEST_LENGTH| bytes of space in 233 * |out|. */ 234 OPENSSL_EXPORT uint8_t *SHA512(const uint8_t *data, size_t len, uint8_t *out); 235 236 /* SHA512_Transform is a low-level function that performs a single, SHA-512 237 * block transformation using the state from |sha| and |SHA512_CBLOCK| bytes 238 * from |block|. */ 239 OPENSSL_EXPORT void SHA512_Transform(SHA512_CTX *sha, const uint8_t *block); 240 241 struct sha512_state_st { 242 uint64_t h[8]; 243 uint64_t Nl, Nh; 244 union { 245 uint64_t d[16]; 246 uint8_t p[128]; 247 } u; 248 unsigned num, md_len; 249 }; 250 251 252 #if defined(__cplusplus) 253 } /* extern C */ 254 #endif 255 256 #endif /* OPENSSL_HEADER_SHA_H */ 257
