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| 1 /* crypto/evp/digest.c */ | |
| 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 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. | |
| 60 * | |
| 61 * Redistribution and use in source and binary forms, with or without | |
| 62 * modification, are permitted provided that the following conditions | |
| 63 * are met: | |
| 64 * | |
| 65 * 1. Redistributions of source code must retain the above copyright | |
| 66 * notice, this list of conditions and the following disclaimer. | |
| 67 * | |
| 68 * 2. Redistributions in binary form must reproduce the above copyright | |
| 69 * notice, this list of conditions and the following disclaimer in | |
| 70 * the documentation and/or other materials provided with the | |
| 71 * distribution. | |
| 72 * | |
| 73 * 3. All advertising materials mentioning features or use of this | |
| 74 * software must display the following acknowledgment: | |
| 75 * "This product includes software developed by the OpenSSL Project | |
| 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
| 77 * | |
| 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 79 * endorse or promote products derived from this software without | |
| 80 * prior written permission. For written permission, please contact | |
| 81 * openssl-core@openssl.org. | |
| 82 * | |
| 83 * 5. Products derived from this software may not be called "OpenSSL" | |
| 84 * nor may "OpenSSL" appear in their names without prior written | |
| 85 * permission of the OpenSSL Project. | |
| 86 * | |
| 87 * 6. Redistributions of any form whatsoever must retain the following | |
| 88 * acknowledgment: | |
| 89 * "This product includes software developed by the OpenSSL Project | |
| 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
| 91 * | |
| 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 103 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 104 * ==================================================================== | |
| 105 * | |
| 106 * This product includes cryptographic software written by Eric Young | |
| 107 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 108 * Hudson (tjh@cryptsoft.com). | |
| 109 * | |
| 110 */ | |
| 111 | |
| 112 #include <stdio.h> | |
| 113 #include "cryptlib.h" | |
| 114 #include <openssl/objects.h> | |
| 115 #include <openssl/evp.h> | |
| 116 #ifndef OPENSSL_NO_ENGINE | |
| 117 #include <openssl/engine.h> | |
| 118 #endif | |
| 119 | |
| 120 #ifdef OPENSSL_FIPS | |
| 121 #include <openssl/fips.h> | |
| 122 #endif | |
| 123 | |
| 124 void EVP_MD_CTX_init(EVP_MD_CTX *ctx) | |
| 125 { | |
| 126 memset(ctx,'\0',sizeof *ctx); | |
| 127 } | |
| 128 | |
| 129 EVP_MD_CTX *EVP_MD_CTX_create(void) | |
| 130 { | |
| 131 EVP_MD_CTX *ctx=OPENSSL_malloc(sizeof *ctx); | |
| 132 | |
| 133 if (ctx) | |
| 134 EVP_MD_CTX_init(ctx); | |
| 135 | |
| 136 return ctx; | |
| 137 } | |
| 138 | |
| 139 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) | |
| 140 { | |
| 141 EVP_MD_CTX_init(ctx); | |
| 142 return EVP_DigestInit_ex(ctx, type, NULL); | |
| 143 } | |
| 144 | |
| 145 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) | |
| 146 { | |
| 147 EVP_MD_CTX_clear_flags(ctx,EVP_MD_CTX_FLAG_CLEANED); | |
| 148 #ifndef OPENSSL_NO_ENGINE | |
| 149 /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts | |
| 150 * so this context may already have an ENGINE! Try to avoid releasing | |
| 151 * the previous handle, re-querying for an ENGINE, and having a | |
| 152 * reinitialisation, when it may all be unecessary. */ | |
| 153 if (ctx->engine && ctx->digest && (!type || | |
| 154 (type && (type->type == ctx->digest->type)))) | |
| 155 goto skip_to_init; | |
| 156 if (type) | |
| 157 { | |
| 158 /* Ensure an ENGINE left lying around from last time is cleared | |
| 159 * (the previous check attempted to avoid this if the same | |
| 160 * ENGINE and EVP_MD could be used). */ | |
| 161 if(ctx->engine) | |
| 162 ENGINE_finish(ctx->engine); | |
| 163 if(impl) | |
| 164 { | |
| 165 if (!ENGINE_init(impl)) | |
| 166 { | |
| 167 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZAT
ION_ERROR); | |
| 168 return 0; | |
| 169 } | |
| 170 } | |
| 171 else | |
| 172 /* Ask if an ENGINE is reserved for this job */ | |
| 173 impl = ENGINE_get_digest_engine(type->type); | |
| 174 if(impl) | |
| 175 { | |
| 176 /* There's an ENGINE for this job ... (apparently) */ | |
| 177 const EVP_MD *d = ENGINE_get_digest(impl, type->type); | |
| 178 if(!d) | |
| 179 { | |
| 180 /* Same comment from evp_enc.c */ | |
| 181 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZAT
ION_ERROR); | |
| 182 ENGINE_finish(impl); | |
| 183 return 0; | |
| 184 } | |
| 185 /* We'll use the ENGINE's private digest definition */ | |
| 186 type = d; | |
| 187 /* Store the ENGINE functional reference so we know | |
| 188 * 'type' came from an ENGINE and we need to release | |
| 189 * it when done. */ | |
| 190 ctx->engine = impl; | |
| 191 } | |
| 192 else | |
| 193 ctx->engine = NULL; | |
| 194 } | |
| 195 else | |
| 196 if(!ctx->digest) | |
| 197 { | |
| 198 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_NO_DIGEST_SET); | |
| 199 return 0; | |
| 200 } | |
| 201 #endif | |
| 202 if (ctx->digest != type) | |
| 203 { | |
| 204 if (ctx->digest && ctx->digest->ctx_size) | |
| 205 OPENSSL_free(ctx->md_data); | |
| 206 ctx->digest=type; | |
| 207 if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) | |
| 208 { | |
| 209 ctx->update = type->update; | |
| 210 ctx->md_data=OPENSSL_malloc(type->ctx_size); | |
| 211 if (ctx->md_data == NULL) | |
| 212 { | |
| 213 EVPerr(EVP_F_EVP_DIGESTINIT_EX, | |
| 214 ERR_R_MALLOC_FAILURE); | |
| 215 return 0; | |
| 216 } | |
| 217 } | |
| 218 } | |
| 219 #ifndef OPENSSL_NO_ENGINE | |
| 220 skip_to_init: | |
| 221 #endif | |
| 222 if (ctx->pctx) | |
| 223 { | |
| 224 int r; | |
| 225 r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG, | |
| 226 EVP_PKEY_CTRL_DIGESTINIT, 0, ctx); | |
| 227 if (r <= 0 && (r != -2)) | |
| 228 return 0; | |
| 229 } | |
| 230 if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) | |
| 231 return 1; | |
| 232 #ifdef OPENSSL_FIPS | |
| 233 if (FIPS_mode()) | |
| 234 { | |
| 235 if (FIPS_digestinit(ctx, type)) | |
| 236 return 1; | |
| 237 OPENSSL_free(ctx->md_data); | |
| 238 ctx->md_data = NULL; | |
| 239 return 0; | |
| 240 } | |
| 241 #endif | |
| 242 return ctx->digest->init(ctx); | |
| 243 } | |
| 244 | |
| 245 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count) | |
| 246 { | |
| 247 #ifdef OPENSSL_FIPS | |
| 248 return FIPS_digestupdate(ctx, data, count); | |
| 249 #else | |
| 250 return ctx->update(ctx,data,count); | |
| 251 #endif | |
| 252 } | |
| 253 | |
| 254 /* The caller can assume that this removes any secret data from the context */ | |
| 255 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) | |
| 256 { | |
| 257 int ret; | |
| 258 ret = EVP_DigestFinal_ex(ctx, md, size); | |
| 259 EVP_MD_CTX_cleanup(ctx); | |
| 260 return ret; | |
| 261 } | |
| 262 | |
| 263 /* The caller can assume that this removes any secret data from the context */ | |
| 264 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) | |
| 265 { | |
| 266 #ifdef OPENSSL_FIPS | |
| 267 return FIPS_digestfinal(ctx, md, size); | |
| 268 #else | |
| 269 int ret; | |
| 270 | |
| 271 OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE); | |
| 272 ret=ctx->digest->final(ctx,md); | |
| 273 if (size != NULL) | |
| 274 *size=ctx->digest->md_size; | |
| 275 if (ctx->digest->cleanup) | |
| 276 { | |
| 277 ctx->digest->cleanup(ctx); | |
| 278 EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED); | |
| 279 } | |
| 280 memset(ctx->md_data,0,ctx->digest->ctx_size); | |
| 281 return ret; | |
| 282 #endif | |
| 283 } | |
| 284 | |
| 285 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) | |
| 286 { | |
| 287 EVP_MD_CTX_init(out); | |
| 288 return EVP_MD_CTX_copy_ex(out, in); | |
| 289 } | |
| 290 | |
| 291 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) | |
| 292 { | |
| 293 unsigned char *tmp_buf; | |
| 294 if ((in == NULL) || (in->digest == NULL)) | |
| 295 { | |
| 296 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,EVP_R_INPUT_NOT_INITIALIZED); | |
| 297 return 0; | |
| 298 } | |
| 299 #ifndef OPENSSL_NO_ENGINE | |
| 300 /* Make sure it's safe to copy a digest context using an ENGINE */ | |
| 301 if (in->engine && !ENGINE_init(in->engine)) | |
| 302 { | |
| 303 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_ENGINE_LIB); | |
| 304 return 0; | |
| 305 } | |
| 306 #endif | |
| 307 | |
| 308 if (out->digest == in->digest) | |
| 309 { | |
| 310 tmp_buf = out->md_data; | |
| 311 EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE); | |
| 312 } | |
| 313 else tmp_buf = NULL; | |
| 314 EVP_MD_CTX_cleanup(out); | |
| 315 memcpy(out,in,sizeof *out); | |
| 316 | |
| 317 if (in->md_data && out->digest->ctx_size) | |
| 318 { | |
| 319 if (tmp_buf) | |
| 320 out->md_data = tmp_buf; | |
| 321 else | |
| 322 { | |
| 323 out->md_data=OPENSSL_malloc(out->digest->ctx_size); | |
| 324 if (!out->md_data) | |
| 325 { | |
| 326 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_MALLOC_FAI
LURE); | |
| 327 return 0; | |
| 328 } | |
| 329 } | |
| 330 memcpy(out->md_data,in->md_data,out->digest->ctx_size); | |
| 331 } | |
| 332 | |
| 333 out->update = in->update; | |
| 334 | |
| 335 if (in->pctx) | |
| 336 { | |
| 337 out->pctx = EVP_PKEY_CTX_dup(in->pctx); | |
| 338 if (!out->pctx) | |
| 339 { | |
| 340 EVP_MD_CTX_cleanup(out); | |
| 341 return 0; | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 if (out->digest->copy) | |
| 346 return out->digest->copy(out,in); | |
| 347 | |
| 348 return 1; | |
| 349 } | |
| 350 | |
| 351 int EVP_Digest(const void *data, size_t count, | |
| 352 unsigned char *md, unsigned int *size, const EVP_MD *type, ENGIN
E *impl) | |
| 353 { | |
| 354 EVP_MD_CTX ctx; | |
| 355 int ret; | |
| 356 | |
| 357 EVP_MD_CTX_init(&ctx); | |
| 358 EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_ONESHOT); | |
| 359 ret=EVP_DigestInit_ex(&ctx, type, impl) | |
| 360 && EVP_DigestUpdate(&ctx, data, count) | |
| 361 && EVP_DigestFinal_ex(&ctx, md, size); | |
| 362 EVP_MD_CTX_cleanup(&ctx); | |
| 363 | |
| 364 return ret; | |
| 365 } | |
| 366 | |
| 367 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) | |
| 368 { | |
| 369 EVP_MD_CTX_cleanup(ctx); | |
| 370 OPENSSL_free(ctx); | |
| 371 } | |
| 372 | |
| 373 /* This call frees resources associated with the context */ | |
| 374 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) | |
| 375 { | |
| 376 #ifndef OPENSSL_FIPS | |
| 377 /* Don't assume ctx->md_data was cleaned in EVP_Digest_Final, | |
| 378 * because sometimes only copies of the context are ever finalised. | |
| 379 */ | |
| 380 if (ctx->digest && ctx->digest->cleanup | |
| 381 && !EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED)) | |
| 382 ctx->digest->cleanup(ctx); | |
| 383 if (ctx->digest && ctx->digest->ctx_size && ctx->md_data | |
| 384 && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) | |
| 385 { | |
| 386 OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size); | |
| 387 OPENSSL_free(ctx->md_data); | |
| 388 } | |
| 389 #endif | |
| 390 if (ctx->pctx) | |
| 391 EVP_PKEY_CTX_free(ctx->pctx); | |
| 392 #ifndef OPENSSL_NO_ENGINE | |
| 393 if(ctx->engine) | |
| 394 /* The EVP_MD we used belongs to an ENGINE, release the | |
| 395 * functional reference we held for this reason. */ | |
| 396 ENGINE_finish(ctx->engine); | |
| 397 #endif | |
| 398 #ifdef OPENSSL_FIPS | |
| 399 FIPS_md_ctx_cleanup(ctx); | |
| 400 #endif | |
| 401 memset(ctx,'\0',sizeof *ctx); | |
| 402 | |
| 403 return 1; | |
| 404 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master