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| 1 /* crypto/rsa/rsa_pmeth.c */ | |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 3 * project 2006. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * | |
| 15 * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 * notice, this list of conditions and the following disclaimer in | |
| 17 * the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * | |
| 20 * 3. All advertising materials mentioning features or use of this | |
| 21 * software must display the following acknowledgment: | |
| 22 * "This product includes software developed by the OpenSSL Project | |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 24 * | |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 26 * endorse or promote products derived from this software without | |
| 27 * prior written permission. For written permission, please contact | |
| 28 * licensing@OpenSSL.org. | |
| 29 * | |
| 30 * 5. Products derived from this software may not be called "OpenSSL" | |
| 31 * nor may "OpenSSL" appear in their names without prior written | |
| 32 * permission of the OpenSSL Project. | |
| 33 * | |
| 34 * 6. Redistributions of any form whatsoever must retain the following | |
| 35 * acknowledgment: | |
| 36 * "This product includes software developed by the OpenSSL Project | |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 38 * | |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 51 * ==================================================================== | |
| 52 * | |
| 53 * This product includes cryptographic software written by Eric Young | |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 55 * Hudson (tjh@cryptsoft.com). | |
| 56 * | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #include <openssl/asn1t.h> | |
| 62 #include <openssl/x509.h> | |
| 63 #include <openssl/rsa.h> | |
| 64 #include <openssl/bn.h> | |
| 65 #include <openssl/evp.h> | |
| 66 #ifndef OPENSSL_NO_CMS | |
| 67 #include <openssl/cms.h> | |
| 68 #endif | |
| 69 #ifdef OPENSSL_FIPS | |
| 70 #include <openssl/fips.h> | |
| 71 #endif | |
| 72 #include "evp_locl.h" | |
| 73 #include "rsa_locl.h" | |
| 74 | |
| 75 /* RSA pkey context structure */ | |
| 76 | |
| 77 typedef struct | |
| 78 { | |
| 79 /* Key gen parameters */ | |
| 80 int nbits; | |
| 81 BIGNUM *pub_exp; | |
| 82 /* Keygen callback info */ | |
| 83 int gentmp[2]; | |
| 84 /* RSA padding mode */ | |
| 85 int pad_mode; | |
| 86 /* message digest */ | |
| 87 const EVP_MD *md; | |
| 88 /* message digest for MGF1 */ | |
| 89 const EVP_MD *mgf1md; | |
| 90 /* PSS/OAEP salt length */ | |
| 91 int saltlen; | |
| 92 /* Temp buffer */ | |
| 93 unsigned char *tbuf; | |
| 94 } RSA_PKEY_CTX; | |
| 95 | |
| 96 static int pkey_rsa_init(EVP_PKEY_CTX *ctx) | |
| 97 { | |
| 98 RSA_PKEY_CTX *rctx; | |
| 99 rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX)); | |
| 100 if (!rctx) | |
| 101 return 0; | |
| 102 rctx->nbits = 1024; | |
| 103 rctx->pub_exp = NULL; | |
| 104 rctx->pad_mode = RSA_PKCS1_PADDING; | |
| 105 rctx->md = NULL; | |
| 106 rctx->mgf1md = NULL; | |
| 107 rctx->tbuf = NULL; | |
| 108 | |
| 109 rctx->saltlen = -2; | |
| 110 | |
| 111 ctx->data = rctx; | |
| 112 ctx->keygen_info = rctx->gentmp; | |
| 113 ctx->keygen_info_count = 2; | |
| 114 | |
| 115 return 1; | |
| 116 } | |
| 117 | |
| 118 static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) | |
| 119 { | |
| 120 RSA_PKEY_CTX *dctx, *sctx; | |
| 121 if (!pkey_rsa_init(dst)) | |
| 122 return 0; | |
| 123 sctx = src->data; | |
| 124 dctx = dst->data; | |
| 125 dctx->nbits = sctx->nbits; | |
| 126 if (sctx->pub_exp) | |
| 127 { | |
| 128 dctx->pub_exp = BN_dup(sctx->pub_exp); | |
| 129 if (!dctx->pub_exp) | |
| 130 return 0; | |
| 131 } | |
| 132 dctx->pad_mode = sctx->pad_mode; | |
| 133 dctx->md = sctx->md; | |
| 134 return 1; | |
| 135 } | |
| 136 | |
| 137 static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) | |
| 138 { | |
| 139 if (ctx->tbuf) | |
| 140 return 1; | |
| 141 ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey)); | |
| 142 if (!ctx->tbuf) | |
| 143 return 0; | |
| 144 return 1; | |
| 145 } | |
| 146 | |
| 147 static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) | |
| 148 { | |
| 149 RSA_PKEY_CTX *rctx = ctx->data; | |
| 150 if (rctx) | |
| 151 { | |
| 152 if (rctx->pub_exp) | |
| 153 BN_free(rctx->pub_exp); | |
| 154 if (rctx->tbuf) | |
| 155 OPENSSL_free(rctx->tbuf); | |
| 156 OPENSSL_free(rctx); | |
| 157 } | |
| 158 } | |
| 159 #ifdef OPENSSL_FIPS | |
| 160 /* FIP checker. Return value indicates status of context parameters: | |
| 161 * 1 : redirect to FIPS. | |
| 162 * 0 : don't redirect to FIPS. | |
| 163 * -1 : illegal operation in FIPS mode. | |
| 164 */ | |
| 165 | |
| 166 static int pkey_fips_check_ctx(EVP_PKEY_CTX *ctx) | |
| 167 { | |
| 168 RSA_PKEY_CTX *rctx = ctx->data; | |
| 169 RSA *rsa = ctx->pkey->pkey.rsa; | |
| 170 int rv = -1; | |
| 171 if (!FIPS_mode()) | |
| 172 return 0; | |
| 173 if (rsa->flags & RSA_FLAG_NON_FIPS_ALLOW) | |
| 174 rv = 0; | |
| 175 if (!(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) && rv) | |
| 176 return -1; | |
| 177 if (rctx->md && !(rctx->md->flags & EVP_MD_FLAG_FIPS)) | |
| 178 return rv; | |
| 179 if (rctx->mgf1md && !(rctx->mgf1md->flags & EVP_MD_FLAG_FIPS)) | |
| 180 return rv; | |
| 181 return 1; | |
| 182 } | |
| 183 #endif | |
| 184 | |
| 185 static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, | |
| 186 const unsigned char *tbs, size_t tbslen) | |
| 187 { | |
| 188 int ret; | |
| 189 RSA_PKEY_CTX *rctx = ctx->data; | |
| 190 RSA *rsa = ctx->pkey->pkey.rsa; | |
| 191 | |
| 192 #ifdef OPENSSL_FIPS | |
| 193 ret = pkey_fips_check_ctx(ctx); | |
| 194 if (ret < 0) | |
| 195 { | |
| 196 RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_
MODE); | |
| 197 return -1; | |
| 198 } | |
| 199 #endif | |
| 200 | |
| 201 if (rctx->md) | |
| 202 { | |
| 203 if (tbslen != (size_t)EVP_MD_size(rctx->md)) | |
| 204 { | |
| 205 RSAerr(RSA_F_PKEY_RSA_SIGN, | |
| 206 RSA_R_INVALID_DIGEST_LENGTH); | |
| 207 return -1; | |
| 208 } | |
| 209 #ifdef OPENSSL_FIPS | |
| 210 if (ret > 0) | |
| 211 { | |
| 212 unsigned int slen; | |
| 213 ret = FIPS_rsa_sign_digest(rsa, tbs, tbslen, rctx->md, | |
| 214 rctx->pad_mode, | |
| 215 rctx->saltlen, | |
| 216 rctx->mgf1md, | |
| 217 sig, &slen); | |
| 218 if (ret > 0) | |
| 219 *siglen = slen; | |
| 220 else | |
| 221 *siglen = 0; | |
| 222 return ret; | |
| 223 } | |
| 224 #endif | |
| 225 | |
| 226 if (EVP_MD_type(rctx->md) == NID_mdc2) | |
| 227 { | |
| 228 unsigned int sltmp; | |
| 229 if (rctx->pad_mode != RSA_PKCS1_PADDING) | |
| 230 return -1; | |
| 231 ret = RSA_sign_ASN1_OCTET_STRING(NID_mdc2, | |
| 232 tbs, tbslen, sig, &sltmp, rsa); | |
| 233 | |
| 234 if (ret <= 0) | |
| 235 return ret; | |
| 236 ret = sltmp; | |
| 237 } | |
| 238 else if (rctx->pad_mode == RSA_X931_PADDING) | |
| 239 { | |
| 240 if (!setup_tbuf(rctx, ctx)) | |
| 241 return -1; | |
| 242 memcpy(rctx->tbuf, tbs, tbslen); | |
| 243 rctx->tbuf[tbslen] = | |
| 244 RSA_X931_hash_id(EVP_MD_type(rctx->md)); | |
| 245 ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf, | |
| 246 sig, rsa, RSA_X931_PADDING); | |
| 247 } | |
| 248 else if (rctx->pad_mode == RSA_PKCS1_PADDING) | |
| 249 { | |
| 250 unsigned int sltmp; | |
| 251 ret = RSA_sign(EVP_MD_type(rctx->md), | |
| 252 tbs, tbslen, sig, &sltmp, rsa); | |
| 253 if (ret <= 0) | |
| 254 return ret; | |
| 255 ret = sltmp; | |
| 256 } | |
| 257 else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) | |
| 258 { | |
| 259 if (!setup_tbuf(rctx, ctx)) | |
| 260 return -1; | |
| 261 if (!RSA_padding_add_PKCS1_PSS_mgf1(rsa, | |
| 262 rctx->tbuf, tbs, | |
| 263 rctx->md, rctx->mgf1md, | |
| 264 rctx->saltlen)) | |
| 265 return -1; | |
| 266 ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf, | |
| 267 sig, rsa, RSA_NO_PADDING); | |
| 268 } | |
| 269 else | |
| 270 return -1; | |
| 271 } | |
| 272 else | |
| 273 ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa, | |
| 274 rctx->pad_mode); | |
| 275 if (ret < 0) | |
| 276 return ret; | |
| 277 *siglen = ret; | |
| 278 return 1; | |
| 279 } | |
| 280 | |
| 281 | |
| 282 static int pkey_rsa_verifyrecover(EVP_PKEY_CTX *ctx, | |
| 283 unsigned char *rout, size_t *routlen, | |
| 284 const unsigned char *sig, size_t siglen) | |
| 285 { | |
| 286 int ret; | |
| 287 RSA_PKEY_CTX *rctx = ctx->data; | |
| 288 | |
| 289 if (rctx->md) | |
| 290 { | |
| 291 if (rctx->pad_mode == RSA_X931_PADDING) | |
| 292 { | |
| 293 if (!setup_tbuf(rctx, ctx)) | |
| 294 return -1; | |
| 295 ret = RSA_public_decrypt(siglen, sig, | |
| 296 rctx->tbuf, ctx->pkey->pkey.rsa, | |
| 297 RSA_X931_PADDING); | |
| 298 if (ret < 1) | |
| 299 return 0; | |
| 300 ret--; | |
| 301 if (rctx->tbuf[ret] != | |
| 302 RSA_X931_hash_id(EVP_MD_type(rctx->md))) | |
| 303 { | |
| 304 RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, | |
| 305 RSA_R_ALGORITHM_MISMATCH); | |
| 306 return 0; | |
| 307 } | |
| 308 if (ret != EVP_MD_size(rctx->md)) | |
| 309 { | |
| 310 RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, | |
| 311 RSA_R_INVALID_DIGEST_LENGTH); | |
| 312 return 0; | |
| 313 } | |
| 314 if (rout) | |
| 315 memcpy(rout, rctx->tbuf, ret); | |
| 316 } | |
| 317 else if (rctx->pad_mode == RSA_PKCS1_PADDING) | |
| 318 { | |
| 319 size_t sltmp; | |
| 320 ret = int_rsa_verify(EVP_MD_type(rctx->md), | |
| 321 NULL, 0, rout, &sltmp, | |
| 322 sig, siglen, ctx->pkey->pkey.rsa); | |
| 323 if (ret <= 0) | |
| 324 return 0; | |
| 325 ret = sltmp; | |
| 326 } | |
| 327 else | |
| 328 return -1; | |
| 329 } | |
| 330 else | |
| 331 ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa, | |
| 332 rctx->pad_mode); | |
| 333 if (ret < 0) | |
| 334 return ret; | |
| 335 *routlen = ret; | |
| 336 return 1; | |
| 337 } | |
| 338 | |
| 339 static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, | |
| 340 const unsigned char *sig, size_t siglen, | |
| 341 const unsigned char *tbs, size_t tbslen) | |
| 342 { | |
| 343 RSA_PKEY_CTX *rctx = ctx->data; | |
| 344 RSA *rsa = ctx->pkey->pkey.rsa; | |
| 345 size_t rslen; | |
| 346 #ifdef OPENSSL_FIPS | |
| 347 int rv; | |
| 348 rv = pkey_fips_check_ctx(ctx); | |
| 349 if (rv < 0) | |
| 350 { | |
| 351 RSAerr(RSA_F_PKEY_RSA_VERIFY, RSA_R_OPERATION_NOT_ALLOWED_IN_FIP
S_MODE); | |
| 352 return -1; | |
| 353 } | |
| 354 #endif | |
| 355 if (rctx->md) | |
| 356 { | |
| 357 #ifdef OPENSSL_FIPS | |
| 358 if (rv > 0) | |
| 359 { | |
| 360 return FIPS_rsa_verify_digest(rsa, | |
| 361 tbs, tbslen, | |
| 362 rctx->md, | |
| 363 rctx->pad_mode, | |
| 364 rctx->saltlen, | |
| 365 rctx->mgf1md, | |
| 366 sig, siglen); | |
| 367 | |
| 368 } | |
| 369 #endif | |
| 370 if (rctx->pad_mode == RSA_PKCS1_PADDING) | |
| 371 return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, | |
| 372 sig, siglen, rsa); | |
| 373 if (rctx->pad_mode == RSA_X931_PADDING) | |
| 374 { | |
| 375 if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, | |
| 376 sig, siglen) <= 0) | |
| 377 return 0; | |
| 378 } | |
| 379 else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) | |
| 380 { | |
| 381 int ret; | |
| 382 if (!setup_tbuf(rctx, ctx)) | |
| 383 return -1; | |
| 384 ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, | |
| 385 rsa, RSA_NO_PADDING); | |
| 386 if (ret <= 0) | |
| 387 return 0; | |
| 388 ret = RSA_verify_PKCS1_PSS_mgf1(rsa, tbs, | |
| 389 rctx->md, rctx->mgf1md, | |
| 390 rctx->tbuf, rctx->saltlen); | |
| 391 if (ret <= 0) | |
| 392 return 0; | |
| 393 return 1; | |
| 394 } | |
| 395 else | |
| 396 return -1; | |
| 397 } | |
| 398 else | |
| 399 { | |
| 400 if (!setup_tbuf(rctx, ctx)) | |
| 401 return -1; | |
| 402 rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf, | |
| 403 rsa, rctx->pad_mode); | |
| 404 if (rslen == 0) | |
| 405 return 0; | |
| 406 } | |
| 407 | |
| 408 if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen)) | |
| 409 return 0; | |
| 410 | |
| 411 return 1; | |
| 412 | |
| 413 } | |
| 414 | |
| 415 | |
| 416 static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, | |
| 417 unsigned char *out, size_t *outlen, | |
| 418 const unsigned char *in, size_t inlen) | |
| 419 { | |
| 420 int ret; | |
| 421 RSA_PKEY_CTX *rctx = ctx->data; | |
| 422 ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, | |
| 423 rctx->pad_mode); | |
| 424 if (ret < 0) | |
| 425 return ret; | |
| 426 *outlen = ret; | |
| 427 return 1; | |
| 428 } | |
| 429 | |
| 430 static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, | |
| 431 unsigned char *out, size_t *outlen, | |
| 432 const unsigned char *in, size_t inlen) | |
| 433 { | |
| 434 int ret; | |
| 435 RSA_PKEY_CTX *rctx = ctx->data; | |
| 436 ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, | |
| 437 rctx->pad_mode); | |
| 438 if (ret < 0) | |
| 439 return ret; | |
| 440 *outlen = ret; | |
| 441 return 1; | |
| 442 } | |
| 443 | |
| 444 static int check_padding_md(const EVP_MD *md, int padding) | |
| 445 { | |
| 446 if (!md) | |
| 447 return 1; | |
| 448 | |
| 449 if (padding == RSA_NO_PADDING) | |
| 450 { | |
| 451 RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE); | |
| 452 return 0; | |
| 453 } | |
| 454 | |
| 455 if (padding == RSA_X931_PADDING) | |
| 456 { | |
| 457 if (RSA_X931_hash_id(EVP_MD_type(md)) == -1) | |
| 458 { | |
| 459 RSAerr(RSA_F_CHECK_PADDING_MD, | |
| 460 RSA_R_INVALID_X931_DIGEST); | |
| 461 return 0; | |
| 462 } | |
| 463 return 1; | |
| 464 } | |
| 465 | |
| 466 return 1; | |
| 467 } | |
| 468 | |
| 469 | |
| 470 static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) | |
| 471 { | |
| 472 RSA_PKEY_CTX *rctx = ctx->data; | |
| 473 switch (type) | |
| 474 { | |
| 475 case EVP_PKEY_CTRL_RSA_PADDING: | |
| 476 if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) | |
| 477 { | |
| 478 if (!check_padding_md(rctx->md, p1)) | |
| 479 return 0; | |
| 480 if (p1 == RSA_PKCS1_PSS_PADDING) | |
| 481 { | |
| 482 if (!(ctx->operation & | |
| 483 (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) | |
| 484 goto bad_pad; | |
| 485 if (!rctx->md) | |
| 486 rctx->md = EVP_sha1(); | |
| 487 } | |
| 488 if (p1 == RSA_PKCS1_OAEP_PADDING) | |
| 489 { | |
| 490 if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT)) | |
| 491 goto bad_pad; | |
| 492 if (!rctx->md) | |
| 493 rctx->md = EVP_sha1(); | |
| 494 } | |
| 495 rctx->pad_mode = p1; | |
| 496 return 1; | |
| 497 } | |
| 498 bad_pad: | |
| 499 RSAerr(RSA_F_PKEY_RSA_CTRL, | |
| 500 RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); | |
| 501 return -2; | |
| 502 | |
| 503 case EVP_PKEY_CTRL_GET_RSA_PADDING: | |
| 504 *(int *)p2 = rctx->pad_mode; | |
| 505 return 1; | |
| 506 | |
| 507 case EVP_PKEY_CTRL_RSA_PSS_SALTLEN: | |
| 508 case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN: | |
| 509 if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) | |
| 510 { | |
| 511 RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN); | |
| 512 return -2; | |
| 513 } | |
| 514 if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) | |
| 515 *(int *)p2 = rctx->saltlen; | |
| 516 else | |
| 517 { | |
| 518 if (p1 < -2) | |
| 519 return -2; | |
| 520 rctx->saltlen = p1; | |
| 521 } | |
| 522 return 1; | |
| 523 | |
| 524 case EVP_PKEY_CTRL_RSA_KEYGEN_BITS: | |
| 525 if (p1 < 256) | |
| 526 { | |
| 527 RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_KEYBITS); | |
| 528 return -2; | |
| 529 } | |
| 530 rctx->nbits = p1; | |
| 531 return 1; | |
| 532 | |
| 533 case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: | |
| 534 if (!p2) | |
| 535 return -2; | |
| 536 rctx->pub_exp = p2; | |
| 537 return 1; | |
| 538 | |
| 539 case EVP_PKEY_CTRL_MD: | |
| 540 if (!check_padding_md(p2, rctx->pad_mode)) | |
| 541 return 0; | |
| 542 rctx->md = p2; | |
| 543 return 1; | |
| 544 | |
| 545 case EVP_PKEY_CTRL_RSA_MGF1_MD: | |
| 546 case EVP_PKEY_CTRL_GET_RSA_MGF1_MD: | |
| 547 if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) | |
| 548 { | |
| 549 RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD); | |
| 550 return -2; | |
| 551 } | |
| 552 if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) | |
| 553 { | |
| 554 if (rctx->mgf1md) | |
| 555 *(const EVP_MD **)p2 = rctx->mgf1md; | |
| 556 else | |
| 557 *(const EVP_MD **)p2 = rctx->md; | |
| 558 } | |
| 559 else | |
| 560 rctx->mgf1md = p2; | |
| 561 return 1; | |
| 562 | |
| 563 case EVP_PKEY_CTRL_DIGESTINIT: | |
| 564 case EVP_PKEY_CTRL_PKCS7_ENCRYPT: | |
| 565 case EVP_PKEY_CTRL_PKCS7_DECRYPT: | |
| 566 case EVP_PKEY_CTRL_PKCS7_SIGN: | |
| 567 return 1; | |
| 568 #ifndef OPENSSL_NO_CMS | |
| 569 case EVP_PKEY_CTRL_CMS_DECRYPT: | |
| 570 { | |
| 571 X509_ALGOR *alg = NULL; | |
| 572 ASN1_OBJECT *encalg = NULL; | |
| 573 if (p2) | |
| 574 CMS_RecipientInfo_ktri_get0_algs(p2, NULL, NULL, &alg); | |
| 575 if (alg) | |
| 576 X509_ALGOR_get0(&encalg, NULL, NULL, alg); | |
| 577 if (encalg && OBJ_obj2nid(encalg) == NID_rsaesOaep) | |
| 578 rctx->pad_mode = RSA_PKCS1_OAEP_PADDING; | |
| 579 } | |
| 580 case EVP_PKEY_CTRL_CMS_ENCRYPT: | |
| 581 case EVP_PKEY_CTRL_CMS_SIGN: | |
| 582 return 1; | |
| 583 #endif | |
| 584 case EVP_PKEY_CTRL_PEER_KEY: | |
| 585 RSAerr(RSA_F_PKEY_RSA_CTRL, | |
| 586 RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
| 587 return -2; | |
| 588 | |
| 589 default: | |
| 590 return -2; | |
| 591 | |
| 592 } | |
| 593 } | |
| 594 | |
| 595 static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx, | |
| 596 const char *type, const char *value) | |
| 597 { | |
| 598 if (!value) | |
| 599 { | |
| 600 RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_VALUE_MISSING); | |
| 601 return 0; | |
| 602 } | |
| 603 if (!strcmp(type, "rsa_padding_mode")) | |
| 604 { | |
| 605 int pm; | |
| 606 if (!strcmp(value, "pkcs1")) | |
| 607 pm = RSA_PKCS1_PADDING; | |
| 608 else if (!strcmp(value, "sslv23")) | |
| 609 pm = RSA_SSLV23_PADDING; | |
| 610 else if (!strcmp(value, "none")) | |
| 611 pm = RSA_NO_PADDING; | |
| 612 else if (!strcmp(value, "oeap")) | |
| 613 pm = RSA_PKCS1_OAEP_PADDING; | |
| 614 else if (!strcmp(value, "x931")) | |
| 615 pm = RSA_X931_PADDING; | |
| 616 else if (!strcmp(value, "pss")) | |
| 617 pm = RSA_PKCS1_PSS_PADDING; | |
| 618 else | |
| 619 { | |
| 620 RSAerr(RSA_F_PKEY_RSA_CTRL_STR, | |
| 621 RSA_R_UNKNOWN_PADDING_TYPE); | |
| 622 return -2; | |
| 623 } | |
| 624 return EVP_PKEY_CTX_set_rsa_padding(ctx, pm); | |
| 625 } | |
| 626 | |
| 627 if (!strcmp(type, "rsa_pss_saltlen")) | |
| 628 { | |
| 629 int saltlen; | |
| 630 saltlen = atoi(value); | |
| 631 return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, saltlen); | |
| 632 } | |
| 633 | |
| 634 if (!strcmp(type, "rsa_keygen_bits")) | |
| 635 { | |
| 636 int nbits; | |
| 637 nbits = atoi(value); | |
| 638 return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, nbits); | |
| 639 } | |
| 640 | |
| 641 if (!strcmp(type, "rsa_keygen_pubexp")) | |
| 642 { | |
| 643 int ret; | |
| 644 BIGNUM *pubexp = NULL; | |
| 645 if (!BN_asc2bn(&pubexp, value)) | |
| 646 return 0; | |
| 647 ret = EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp); | |
| 648 if (ret <= 0) | |
| 649 BN_free(pubexp); | |
| 650 return ret; | |
| 651 } | |
| 652 | |
| 653 return -2; | |
| 654 } | |
| 655 | |
| 656 static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) | |
| 657 { | |
| 658 RSA *rsa = NULL; | |
| 659 RSA_PKEY_CTX *rctx = ctx->data; | |
| 660 BN_GENCB *pcb, cb; | |
| 661 int ret; | |
| 662 if (!rctx->pub_exp) | |
| 663 { | |
| 664 rctx->pub_exp = BN_new(); | |
| 665 if (!rctx->pub_exp || !BN_set_word(rctx->pub_exp, RSA_F4)) | |
| 666 return 0; | |
| 667 } | |
| 668 rsa = RSA_new(); | |
| 669 if (!rsa) | |
| 670 return 0; | |
| 671 if (ctx->pkey_gencb) | |
| 672 { | |
| 673 pcb = &cb; | |
| 674 evp_pkey_set_cb_translate(pcb, ctx); | |
| 675 } | |
| 676 else | |
| 677 pcb = NULL; | |
| 678 ret = RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, pcb); | |
| 679 if (ret > 0) | |
| 680 EVP_PKEY_assign_RSA(pkey, rsa); | |
| 681 else | |
| 682 RSA_free(rsa); | |
| 683 return ret; | |
| 684 } | |
| 685 | |
| 686 const EVP_PKEY_METHOD rsa_pkey_meth = | |
| 687 { | |
| 688 EVP_PKEY_RSA, | |
| 689 EVP_PKEY_FLAG_AUTOARGLEN, | |
| 690 pkey_rsa_init, | |
| 691 pkey_rsa_copy, | |
| 692 pkey_rsa_cleanup, | |
| 693 | |
| 694 0,0, | |
| 695 | |
| 696 0, | |
| 697 pkey_rsa_keygen, | |
| 698 | |
| 699 0, | |
| 700 pkey_rsa_sign, | |
| 701 | |
| 702 0, | |
| 703 pkey_rsa_verify, | |
| 704 | |
| 705 0, | |
| 706 pkey_rsa_verifyrecover, | |
| 707 | |
| 708 | |
| 709 0,0,0,0, | |
| 710 | |
| 711 0, | |
| 712 pkey_rsa_encrypt, | |
| 713 | |
| 714 0, | |
| 715 pkey_rsa_decrypt, | |
| 716 | |
| 717 0,0, | |
| 718 | |
| 719 pkey_rsa_ctrl, | |
| 720 pkey_rsa_ctrl_str | |
| 721 | |
| 722 | |
| 723 }; | |
| OLD | NEW |
|---|
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