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 #include <openssl/digest.h> 58 59 #include <assert.h> 60 #include <string.h> 61 62 #include <openssl/md4.h> 63 #include <openssl/md5.h> 64 #include <openssl/obj.h> 65 #include <openssl/sha.h> 66 67 #include "internal.h" 68 69 #if defined(NDEBUG) 70 #define CHECK(x) (void) (x) 71 #else 72 #define CHECK(x) assert(x) 73 #endif 74 75 76 static void md4_init(EVP_MD_CTX *ctx) { 77 CHECK(MD4_Init(ctx->md_data)); 78 } 79 80 static void md4_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 81 CHECK(MD4_Update(ctx->md_data, data, count)); 82 } 83 84 static void md4_final(EVP_MD_CTX *ctx, uint8_t *out) { 85 CHECK(MD4_Final(out, ctx->md_data)); 86 } 87 88 static const EVP_MD md4_md = { 89 NID_md4, MD4_DIGEST_LENGTH, 0 /* flags */, md4_init, 90 md4_update, md4_final, 64 /* block size */, sizeof(MD4_CTX), 91 }; 92 93 const EVP_MD *EVP_md4(void) { return &md4_md; } 94 95 96 static void md5_init(EVP_MD_CTX *ctx) { 97 CHECK(MD5_Init(ctx->md_data)); 98 } 99 100 static void md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 101 CHECK(MD5_Update(ctx->md_data, data, count)); 102 } 103 104 static void md5_final(EVP_MD_CTX *ctx, uint8_t *out) { 105 CHECK(MD5_Final(out, ctx->md_data)); 106 } 107 108 static const EVP_MD md5_md = { 109 NID_md5, MD5_DIGEST_LENGTH, 0 /* flags */, md5_init, 110 md5_update, md5_final, 64 /* block size */, sizeof(MD5_CTX), 111 }; 112 113 const EVP_MD *EVP_md5(void) { return &md5_md; } 114 115 116 static void sha1_init(EVP_MD_CTX *ctx) { 117 CHECK(SHA1_Init(ctx->md_data)); 118 } 119 120 static void sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 121 CHECK(SHA1_Update(ctx->md_data, data, count)); 122 } 123 124 static void sha1_final(EVP_MD_CTX *ctx, uint8_t *md) { 125 CHECK(SHA1_Final(md, ctx->md_data)); 126 } 127 128 static const EVP_MD sha1_md = { 129 NID_sha1, SHA_DIGEST_LENGTH, 0 /* flags */, sha1_init, 130 sha1_update, sha1_final, 64 /* block size */, sizeof(SHA_CTX), 131 }; 132 133 const EVP_MD *EVP_sha1(void) { return &sha1_md; } 134 135 136 static void sha224_init(EVP_MD_CTX *ctx) { 137 CHECK(SHA224_Init(ctx->md_data)); 138 } 139 140 static void sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 141 CHECK(SHA224_Update(ctx->md_data, data, count)); 142 } 143 144 static void sha224_final(EVP_MD_CTX *ctx, uint8_t *md) { 145 CHECK(SHA224_Final(md, ctx->md_data)); 146 } 147 148 static const EVP_MD sha224_md = { 149 NID_sha224, SHA224_DIGEST_LENGTH, 0 /* flags */, 150 sha224_init, sha224_update, sha224_final, 151 64 /* block size */, sizeof(SHA256_CTX), 152 }; 153 154 const EVP_MD *EVP_sha224(void) { return &sha224_md; } 155 156 157 static void sha256_init(EVP_MD_CTX *ctx) { 158 CHECK(SHA256_Init(ctx->md_data)); 159 } 160 161 static void sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 162 CHECK(SHA256_Update(ctx->md_data, data, count)); 163 } 164 165 static void sha256_final(EVP_MD_CTX *ctx, uint8_t *md) { 166 CHECK(SHA256_Final(md, ctx->md_data)); 167 } 168 169 static const EVP_MD sha256_md = { 170 NID_sha256, SHA256_DIGEST_LENGTH, 0 /* flags */, 171 sha256_init, sha256_update, sha256_final, 172 64 /* block size */, sizeof(SHA256_CTX), 173 }; 174 175 const EVP_MD *EVP_sha256(void) { return &sha256_md; } 176 177 178 static void sha384_init(EVP_MD_CTX *ctx) { 179 CHECK(SHA384_Init(ctx->md_data)); 180 } 181 182 static void sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 183 CHECK(SHA384_Update(ctx->md_data, data, count)); 184 } 185 186 static void sha384_final(EVP_MD_CTX *ctx, uint8_t *md) { 187 CHECK(SHA384_Final(md, ctx->md_data)); 188 } 189 190 static const EVP_MD sha384_md = { 191 NID_sha384, SHA384_DIGEST_LENGTH, 0 /* flags */, 192 sha384_init, sha384_update, sha384_final, 193 128 /* block size */, sizeof(SHA512_CTX), 194 }; 195 196 const EVP_MD *EVP_sha384(void) { return &sha384_md; } 197 198 199 static void sha512_init(EVP_MD_CTX *ctx) { 200 CHECK(SHA512_Init(ctx->md_data)); 201 } 202 203 static void sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) { 204 CHECK(SHA512_Update(ctx->md_data, data, count)); 205 } 206 207 static void sha512_final(EVP_MD_CTX *ctx, uint8_t *md) { 208 CHECK(SHA512_Final(md, ctx->md_data)); 209 } 210 211 static const EVP_MD sha512_md = { 212 NID_sha512, SHA512_DIGEST_LENGTH, 0 /* flags */, 213 sha512_init, sha512_update, sha512_final, 214 128 /* block size */, sizeof(SHA512_CTX), 215 }; 216 217 const EVP_MD *EVP_sha512(void) { return &sha512_md; } 218 219 220 typedef struct { 221 MD5_CTX md5; 222 SHA_CTX sha1; 223 } MD5_SHA1_CTX; 224 225 static void md5_sha1_init(EVP_MD_CTX *md_ctx) { 226 MD5_SHA1_CTX *ctx = md_ctx->md_data; 227 CHECK(MD5_Init(&ctx->md5) && SHA1_Init(&ctx->sha1)); 228 } 229 230 static void md5_sha1_update(EVP_MD_CTX *md_ctx, const void *data, 231 size_t count) { 232 MD5_SHA1_CTX *ctx = md_ctx->md_data; 233 CHECK(MD5_Update(&ctx->md5, data, count) && 234 SHA1_Update(&ctx->sha1, data, count)); 235 } 236 237 static void md5_sha1_final(EVP_MD_CTX *md_ctx, uint8_t *out) { 238 MD5_SHA1_CTX *ctx = md_ctx->md_data; 239 CHECK(MD5_Final(out, &ctx->md5) && 240 SHA1_Final(out + MD5_DIGEST_LENGTH, &ctx->sha1)); 241 } 242 243 static const EVP_MD md5_sha1_md = { 244 NID_md5_sha1, 245 MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH, 246 0 /* flags */, 247 md5_sha1_init, 248 md5_sha1_update, 249 md5_sha1_final, 250 64 /* block size */, 251 sizeof(MD5_SHA1_CTX), 252 }; 253 254 const EVP_MD *EVP_md5_sha1(void) { return &md5_sha1_md; } 255 256 257 struct nid_to_digest { 258 int nid; 259 const EVP_MD* (*md_func)(void); 260 const char *short_name; 261 const char *long_name; 262 }; 263 264 static const struct nid_to_digest nid_to_digest_mapping[] = { 265 { NID_md4, EVP_md4, SN_md4, LN_md4 }, 266 { NID_md5, EVP_md5, SN_md5, LN_md5 }, 267 { NID_sha1, EVP_sha1, SN_sha1, LN_sha1 }, 268 { NID_sha224, EVP_sha224, SN_sha224, LN_sha224 }, 269 { NID_sha256, EVP_sha256, SN_sha256, LN_sha256 }, 270 { NID_sha384, EVP_sha384, SN_sha384, LN_sha384 }, 271 { NID_sha512, EVP_sha512, SN_sha512, LN_sha512 }, 272 { NID_md5_sha1, EVP_md5_sha1, SN_md5_sha1, LN_md5_sha1 }, 273 { NID_dsaWithSHA, EVP_sha1, SN_dsaWithSHA, LN_dsaWithSHA }, 274 { NID_dsaWithSHA1, EVP_sha1, SN_dsaWithSHA1, LN_dsaWithSHA1 }, 275 { NID_ecdsa_with_SHA1, EVP_sha1, SN_ecdsa_with_SHA1, NULL }, 276 { NID_md5WithRSAEncryption, EVP_md5, SN_md5WithRSAEncryption, 277 LN_md5WithRSAEncryption }, 278 { NID_sha1WithRSAEncryption, EVP_sha1, SN_sha1WithRSAEncryption, 279 LN_sha1WithRSAEncryption }, 280 { NID_sha224WithRSAEncryption, EVP_sha224, SN_sha224WithRSAEncryption, 281 LN_sha224WithRSAEncryption }, 282 { NID_sha256WithRSAEncryption, EVP_sha256, SN_sha256WithRSAEncryption, 283 LN_sha256WithRSAEncryption }, 284 { NID_sha384WithRSAEncryption, EVP_sha384, SN_sha384WithRSAEncryption, 285 LN_sha384WithRSAEncryption }, 286 { NID_sha512WithRSAEncryption, EVP_sha512, SN_sha512WithRSAEncryption, 287 LN_sha512WithRSAEncryption }, 288 }; 289 290 const EVP_MD* EVP_get_digestbynid(int nid) { 291 unsigned i; 292 293 for (i = 0; i < sizeof(nid_to_digest_mapping) / sizeof(struct nid_to_digest); 294 i++) { 295 if (nid_to_digest_mapping[i].nid == nid) { 296 return nid_to_digest_mapping[i].md_func(); 297 } 298 } 299 300 return NULL; 301 } 302 303 const EVP_MD* EVP_get_digestbyobj(const ASN1_OBJECT *obj) { 304 return EVP_get_digestbynid(OBJ_obj2nid(obj)); 305 } 306 307 const EVP_MD *EVP_get_digestbyname(const char *name) { 308 unsigned i; 309 310 for (i = 0; i < sizeof(nid_to_digest_mapping) / sizeof(struct nid_to_digest); 311 i++) { 312 const char *short_name = nid_to_digest_mapping[i].short_name; 313 const char *long_name = nid_to_digest_mapping[i].long_name; 314 if ((short_name && strcmp(short_name, name) == 0) || 315 (long_name && strcmp(long_name, name) == 0)) { 316 return nid_to_digest_mapping[i].md_func(); 317 } 318 } 319 320 return NULL; 321 } 322
