diff options
Diffstat (limited to 'src/lib/libcrypto/rsa/rsa_ameth.c')
| -rw-r--r-- | src/lib/libcrypto/rsa/rsa_ameth.c | 675 |
1 files changed, 0 insertions, 675 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_ameth.c b/src/lib/libcrypto/rsa/rsa_ameth.c deleted file mode 100644 index 528b72b4b9..0000000000 --- a/src/lib/libcrypto/rsa/rsa_ameth.c +++ /dev/null | |||
| @@ -1,675 +0,0 @@ | |||
| 1 | /* $OpenBSD: rsa_ameth.c,v 1.14 2015/02/11 04:05:14 beck Exp $ */ | ||
| 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 | |||
| 61 | #include <openssl/opensslconf.h> | ||
| 62 | |||
| 63 | #include <openssl/asn1t.h> | ||
| 64 | #include <openssl/bn.h> | ||
| 65 | #include <openssl/err.h> | ||
| 66 | #include <openssl/rsa.h> | ||
| 67 | #include <openssl/x509.h> | ||
| 68 | |||
| 69 | #ifndef OPENSSL_NO_CMS | ||
| 70 | #include <openssl/cms.h> | ||
| 71 | #endif | ||
| 72 | |||
| 73 | #include "asn1_locl.h" | ||
| 74 | |||
| 75 | static int | ||
| 76 | rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) | ||
| 77 | { | ||
| 78 | unsigned char *penc = NULL; | ||
| 79 | int penclen; | ||
| 80 | |||
| 81 | penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); | ||
| 82 | if (penclen <= 0) | ||
| 83 | return 0; | ||
| 84 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), | ||
| 85 | V_ASN1_NULL, NULL, penc, penclen)) | ||
| 86 | return 1; | ||
| 87 | |||
| 88 | free(penc); | ||
| 89 | return 0; | ||
| 90 | } | ||
| 91 | |||
| 92 | static int | ||
| 93 | rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) | ||
| 94 | { | ||
| 95 | const unsigned char *p; | ||
| 96 | int pklen; | ||
| 97 | RSA *rsa = NULL; | ||
| 98 | |||
| 99 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) | ||
| 100 | return 0; | ||
| 101 | if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen))) { | ||
| 102 | RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); | ||
| 103 | return 0; | ||
| 104 | } | ||
| 105 | EVP_PKEY_assign_RSA (pkey, rsa); | ||
| 106 | return 1; | ||
| 107 | } | ||
| 108 | |||
| 109 | static int | ||
| 110 | rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) | ||
| 111 | { | ||
| 112 | if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0 || | ||
| 113 | BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0) | ||
| 114 | return 0; | ||
| 115 | return 1; | ||
| 116 | } | ||
| 117 | |||
| 118 | static int | ||
| 119 | old_rsa_priv_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen) | ||
| 120 | { | ||
| 121 | RSA *rsa; | ||
| 122 | |||
| 123 | if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen))) { | ||
| 124 | RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); | ||
| 125 | return 0; | ||
| 126 | } | ||
| 127 | EVP_PKEY_assign_RSA(pkey, rsa); | ||
| 128 | return 1; | ||
| 129 | } | ||
| 130 | |||
| 131 | static int | ||
| 132 | old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) | ||
| 133 | { | ||
| 134 | return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); | ||
| 135 | } | ||
| 136 | |||
| 137 | static int | ||
| 138 | rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) | ||
| 139 | { | ||
| 140 | unsigned char *rk = NULL; | ||
| 141 | int rklen; | ||
| 142 | |||
| 143 | rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); | ||
| 144 | |||
| 145 | if (rklen <= 0) { | ||
| 146 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | ||
| 147 | return 0; | ||
| 148 | } | ||
| 149 | |||
| 150 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0, | ||
| 151 | V_ASN1_NULL, NULL, rk, rklen)) { | ||
| 152 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | ||
| 153 | return 0; | ||
| 154 | } | ||
| 155 | |||
| 156 | return 1; | ||
| 157 | } | ||
| 158 | |||
| 159 | static int | ||
| 160 | rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) | ||
| 161 | { | ||
| 162 | const unsigned char *p; | ||
| 163 | int pklen; | ||
| 164 | |||
| 165 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) | ||
| 166 | return 0; | ||
| 167 | return old_rsa_priv_decode(pkey, &p, pklen); | ||
| 168 | } | ||
| 169 | |||
| 170 | static int | ||
| 171 | int_rsa_size(const EVP_PKEY *pkey) | ||
| 172 | { | ||
| 173 | return RSA_size(pkey->pkey.rsa); | ||
| 174 | } | ||
| 175 | |||
| 176 | static int | ||
| 177 | rsa_bits(const EVP_PKEY *pkey) | ||
| 178 | { | ||
| 179 | return BN_num_bits(pkey->pkey.rsa->n); | ||
| 180 | } | ||
| 181 | |||
| 182 | static void | ||
| 183 | int_rsa_free(EVP_PKEY *pkey) | ||
| 184 | { | ||
| 185 | RSA_free(pkey->pkey.rsa); | ||
| 186 | } | ||
| 187 | |||
| 188 | static void | ||
| 189 | update_buflen(const BIGNUM *b, size_t *pbuflen) | ||
| 190 | { | ||
| 191 | size_t i; | ||
| 192 | |||
| 193 | if (!b) | ||
| 194 | return; | ||
| 195 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) | ||
| 196 | *pbuflen = i; | ||
| 197 | } | ||
| 198 | |||
| 199 | static int | ||
| 200 | do_rsa_print(BIO *bp, const RSA *x, int off, int priv) | ||
| 201 | { | ||
| 202 | char *str; | ||
| 203 | const char *s; | ||
| 204 | unsigned char *m = NULL; | ||
| 205 | int ret = 0, mod_len = 0; | ||
| 206 | size_t buf_len = 0; | ||
| 207 | |||
| 208 | update_buflen(x->n, &buf_len); | ||
| 209 | update_buflen(x->e, &buf_len); | ||
| 210 | |||
| 211 | if (priv) { | ||
| 212 | update_buflen(x->d, &buf_len); | ||
| 213 | update_buflen(x->p, &buf_len); | ||
| 214 | update_buflen(x->q, &buf_len); | ||
| 215 | update_buflen(x->dmp1, &buf_len); | ||
| 216 | update_buflen(x->dmq1, &buf_len); | ||
| 217 | update_buflen(x->iqmp, &buf_len); | ||
| 218 | } | ||
| 219 | |||
| 220 | m = malloc(buf_len + 10); | ||
| 221 | if (m == NULL) { | ||
| 222 | RSAerr(RSA_F_DO_RSA_PRINT, ERR_R_MALLOC_FAILURE); | ||
| 223 | goto err; | ||
| 224 | } | ||
| 225 | |||
| 226 | if (x->n != NULL) | ||
| 227 | mod_len = BN_num_bits(x->n); | ||
| 228 | |||
| 229 | if (!BIO_indent(bp, off, 128)) | ||
| 230 | goto err; | ||
| 231 | |||
| 232 | if (priv && x->d) { | ||
| 233 | if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len) <= 0) | ||
| 234 | goto err; | ||
| 235 | str = "modulus:"; | ||
| 236 | s = "publicExponent:"; | ||
| 237 | } else { | ||
| 238 | if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0) | ||
| 239 | goto err; | ||
| 240 | str = "Modulus:"; | ||
| 241 | s= "Exponent:"; | ||
| 242 | } | ||
| 243 | if (!ASN1_bn_print(bp, str, x->n, m, off)) | ||
| 244 | goto err; | ||
| 245 | if (!ASN1_bn_print(bp, s, x->e, m, off)) | ||
| 246 | goto err; | ||
| 247 | if (priv) { | ||
| 248 | if (!ASN1_bn_print(bp, "privateExponent:", x->d,m, off)) | ||
| 249 | goto err; | ||
| 250 | if (!ASN1_bn_print(bp, "prime1:", x->p, m, off)) | ||
| 251 | goto err; | ||
| 252 | if (!ASN1_bn_print(bp, "prime2:", x->q, m, off)) | ||
| 253 | goto err; | ||
| 254 | if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, m, off)) | ||
| 255 | goto err; | ||
| 256 | if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, m, off)) | ||
| 257 | goto err; | ||
| 258 | if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, m, off)) | ||
| 259 | goto err; | ||
| 260 | } | ||
| 261 | ret = 1; | ||
| 262 | err: | ||
| 263 | free(m); | ||
| 264 | return (ret); | ||
| 265 | } | ||
| 266 | |||
| 267 | static int | ||
| 268 | rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx) | ||
| 269 | { | ||
| 270 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); | ||
| 271 | } | ||
| 272 | |||
| 273 | static int | ||
| 274 | rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx) | ||
| 275 | { | ||
| 276 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); | ||
| 277 | } | ||
| 278 | |||
| 279 | static RSA_PSS_PARAMS * | ||
| 280 | rsa_pss_decode(const X509_ALGOR *alg, X509_ALGOR **pmaskHash) | ||
| 281 | { | ||
| 282 | const unsigned char *p; | ||
| 283 | int plen; | ||
| 284 | RSA_PSS_PARAMS *pss; | ||
| 285 | |||
| 286 | *pmaskHash = NULL; | ||
| 287 | |||
| 288 | if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE) | ||
| 289 | return NULL; | ||
| 290 | |||
| 291 | p = alg->parameter->value.sequence->data; | ||
| 292 | plen = alg->parameter->value.sequence->length; | ||
| 293 | pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen); | ||
| 294 | |||
| 295 | if (!pss) | ||
| 296 | return NULL; | ||
| 297 | |||
| 298 | if (pss->maskGenAlgorithm) { | ||
| 299 | ASN1_TYPE *param = pss->maskGenAlgorithm->parameter; | ||
| 300 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1 && | ||
| 301 | param->type == V_ASN1_SEQUENCE) { | ||
| 302 | p = param->value.sequence->data; | ||
| 303 | plen = param->value.sequence->length; | ||
| 304 | *pmaskHash = d2i_X509_ALGOR(NULL, &p, plen); | ||
| 305 | } | ||
| 306 | } | ||
| 307 | |||
| 308 | return pss; | ||
| 309 | } | ||
| 310 | |||
| 311 | static int | ||
| 312 | rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, X509_ALGOR *maskHash, | ||
| 313 | int indent) | ||
| 314 | { | ||
| 315 | int rv = 0; | ||
| 316 | |||
| 317 | if (!pss) { | ||
| 318 | if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) | ||
| 319 | return 0; | ||
| 320 | return 1; | ||
| 321 | } | ||
| 322 | if (BIO_puts(bp, "\n") <= 0) | ||
| 323 | goto err; | ||
| 324 | if (!BIO_indent(bp, indent, 128)) | ||
| 325 | goto err; | ||
| 326 | if (BIO_puts(bp, "Hash Algorithm: ") <= 0) | ||
| 327 | goto err; | ||
| 328 | |||
| 329 | if (pss->hashAlgorithm) { | ||
| 330 | if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) | ||
| 331 | goto err; | ||
| 332 | } else if (BIO_puts(bp, "sha1 (default)") <= 0) | ||
| 333 | goto err; | ||
| 334 | |||
| 335 | if (BIO_puts(bp, "\n") <= 0) | ||
| 336 | goto err; | ||
| 337 | |||
| 338 | if (!BIO_indent(bp, indent, 128)) | ||
| 339 | goto err; | ||
| 340 | |||
| 341 | if (BIO_puts(bp, "Mask Algorithm: ") <= 0) | ||
| 342 | goto err; | ||
| 343 | if (pss->maskGenAlgorithm) { | ||
| 344 | if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) | ||
| 345 | goto err; | ||
| 346 | if (BIO_puts(bp, " with ") <= 0) | ||
| 347 | goto err; | ||
| 348 | if (maskHash) { | ||
| 349 | if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) | ||
| 350 | goto err; | ||
| 351 | } else if (BIO_puts(bp, "INVALID") <= 0) | ||
| 352 | goto err; | ||
| 353 | } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) | ||
| 354 | goto err; | ||
| 355 | BIO_puts(bp, "\n"); | ||
| 356 | |||
| 357 | if (!BIO_indent(bp, indent, 128)) | ||
| 358 | goto err; | ||
| 359 | if (BIO_puts(bp, "Salt Length: 0x") <= 0) | ||
| 360 | goto err; | ||
| 361 | if (pss->saltLength) { | ||
| 362 | if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) | ||
| 363 | goto err; | ||
| 364 | } else if (BIO_puts(bp, "14 (default)") <= 0) | ||
| 365 | goto err; | ||
| 366 | BIO_puts(bp, "\n"); | ||
| 367 | |||
| 368 | if (!BIO_indent(bp, indent, 128)) | ||
| 369 | goto err; | ||
| 370 | if (BIO_puts(bp, "Trailer Field: 0x") <= 0) | ||
| 371 | goto err; | ||
| 372 | if (pss->trailerField) { | ||
| 373 | if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) | ||
| 374 | goto err; | ||
| 375 | } else if (BIO_puts(bp, "BC (default)") <= 0) | ||
| 376 | goto err; | ||
| 377 | BIO_puts(bp, "\n"); | ||
| 378 | |||
| 379 | rv = 1; | ||
| 380 | |||
| 381 | err: | ||
| 382 | return rv; | ||
| 383 | } | ||
| 384 | |||
| 385 | static int | ||
| 386 | rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig, | ||
| 387 | int indent, ASN1_PCTX *pctx) | ||
| 388 | { | ||
| 389 | if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss) { | ||
| 390 | int rv; | ||
| 391 | RSA_PSS_PARAMS *pss; | ||
| 392 | X509_ALGOR *maskHash; | ||
| 393 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
| 394 | rv = rsa_pss_param_print(bp, pss, maskHash, indent); | ||
| 395 | if (pss) | ||
| 396 | RSA_PSS_PARAMS_free(pss); | ||
| 397 | if (maskHash) | ||
| 398 | X509_ALGOR_free(maskHash); | ||
| 399 | if (!rv) | ||
| 400 | return 0; | ||
| 401 | } else if (!sig && BIO_puts(bp, "\n") <= 0) | ||
| 402 | return 0; | ||
| 403 | if (sig) | ||
| 404 | return X509_signature_dump(bp, sig, indent); | ||
| 405 | return 1; | ||
| 406 | } | ||
| 407 | |||
| 408 | static int | ||
| 409 | rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) | ||
| 410 | { | ||
| 411 | X509_ALGOR *alg = NULL; | ||
| 412 | |||
| 413 | switch (op) { | ||
| 414 | case ASN1_PKEY_CTRL_PKCS7_SIGN: | ||
| 415 | if (arg1 == 0) | ||
| 416 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); | ||
| 417 | break; | ||
| 418 | |||
| 419 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: | ||
| 420 | if (arg1 == 0) | ||
| 421 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); | ||
| 422 | break; | ||
| 423 | #ifndef OPENSSL_NO_CMS | ||
| 424 | case ASN1_PKEY_CTRL_CMS_SIGN: | ||
| 425 | if (arg1 == 0) | ||
| 426 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); | ||
| 427 | break; | ||
| 428 | |||
| 429 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: | ||
| 430 | if (arg1 == 0) | ||
| 431 | CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg); | ||
| 432 | break; | ||
| 433 | #endif | ||
| 434 | |||
| 435 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: | ||
| 436 | *(int *)arg2 = NID_sha1; | ||
| 437 | return 1; | ||
| 438 | |||
| 439 | default: | ||
| 440 | return -2; | ||
| 441 | } | ||
| 442 | |||
| 443 | if (alg) | ||
| 444 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), | ||
| 445 | V_ASN1_NULL, 0); | ||
| 446 | |||
| 447 | return 1; | ||
| 448 | } | ||
| 449 | |||
| 450 | /* Customised RSA item verification routine. This is called | ||
| 451 | * when a signature is encountered requiring special handling. We | ||
| 452 | * currently only handle PSS. | ||
| 453 | */ | ||
| 454 | static int | ||
| 455 | rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
| 456 | X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, EVP_PKEY *pkey) | ||
| 457 | { | ||
| 458 | int rv = -1; | ||
| 459 | int saltlen; | ||
| 460 | const EVP_MD *mgf1md = NULL, *md = NULL; | ||
| 461 | RSA_PSS_PARAMS *pss; | ||
| 462 | X509_ALGOR *maskHash; | ||
| 463 | EVP_PKEY_CTX *pkctx; | ||
| 464 | |||
| 465 | /* Sanity check: make sure it is PSS */ | ||
| 466 | if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) { | ||
| 467 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); | ||
| 468 | return -1; | ||
| 469 | } | ||
| 470 | |||
| 471 | /* Decode PSS parameters */ | ||
| 472 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
| 473 | |||
| 474 | if (pss == NULL) { | ||
| 475 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS); | ||
| 476 | goto err; | ||
| 477 | } | ||
| 478 | /* Check mask and lookup mask hash algorithm */ | ||
| 479 | if (pss->maskGenAlgorithm) { | ||
| 480 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1) { | ||
| 481 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
| 482 | RSA_R_UNSUPPORTED_MASK_ALGORITHM); | ||
| 483 | goto err; | ||
| 484 | } | ||
| 485 | if (!maskHash) { | ||
| 486 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
| 487 | RSA_R_UNSUPPORTED_MASK_PARAMETER); | ||
| 488 | goto err; | ||
| 489 | } | ||
| 490 | mgf1md = EVP_get_digestbyobj(maskHash->algorithm); | ||
| 491 | if (mgf1md == NULL) { | ||
| 492 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
| 493 | RSA_R_UNKNOWN_MASK_DIGEST); | ||
| 494 | goto err; | ||
| 495 | } | ||
| 496 | } else | ||
| 497 | mgf1md = EVP_sha1(); | ||
| 498 | |||
| 499 | if (pss->hashAlgorithm) { | ||
| 500 | md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm); | ||
| 501 | if (md == NULL) { | ||
| 502 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST); | ||
| 503 | goto err; | ||
| 504 | } | ||
| 505 | } else | ||
| 506 | md = EVP_sha1(); | ||
| 507 | |||
| 508 | if (pss->saltLength) { | ||
| 509 | saltlen = ASN1_INTEGER_get(pss->saltLength); | ||
| 510 | |||
| 511 | /* Could perform more salt length sanity checks but the main | ||
| 512 | * RSA routines will trap other invalid values anyway. | ||
| 513 | */ | ||
| 514 | if (saltlen < 0) { | ||
| 515 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
| 516 | RSA_R_INVALID_SALT_LENGTH); | ||
| 517 | goto err; | ||
| 518 | } | ||
| 519 | } else | ||
| 520 | saltlen = 20; | ||
| 521 | |||
| 522 | /* low-level routines support only trailer field 0xbc (value 1) | ||
| 523 | * and PKCS#1 says we should reject any other value anyway. | ||
| 524 | */ | ||
| 525 | if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) { | ||
| 526 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER); | ||
| 527 | goto err; | ||
| 528 | } | ||
| 529 | |||
| 530 | /* We have all parameters now set up context */ | ||
| 531 | |||
| 532 | if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) | ||
| 533 | goto err; | ||
| 534 | |||
| 535 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) | ||
| 536 | goto err; | ||
| 537 | |||
| 538 | if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) | ||
| 539 | goto err; | ||
| 540 | |||
| 541 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) | ||
| 542 | goto err; | ||
| 543 | /* Carry on */ | ||
| 544 | rv = 2; | ||
| 545 | |||
| 546 | err: | ||
| 547 | RSA_PSS_PARAMS_free(pss); | ||
| 548 | if (maskHash) | ||
| 549 | X509_ALGOR_free(maskHash); | ||
| 550 | return rv; | ||
| 551 | } | ||
| 552 | |||
| 553 | static int | ||
| 554 | rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
| 555 | X509_ALGOR *alg1, X509_ALGOR *alg2, ASN1_BIT_STRING *sig) | ||
| 556 | { | ||
| 557 | int pad_mode; | ||
| 558 | EVP_PKEY_CTX *pkctx = ctx->pctx; | ||
| 559 | |||
| 560 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) | ||
| 561 | return 0; | ||
| 562 | if (pad_mode == RSA_PKCS1_PADDING) | ||
| 563 | return 2; | ||
| 564 | if (pad_mode == RSA_PKCS1_PSS_PADDING) { | ||
| 565 | const EVP_MD *sigmd, *mgf1md; | ||
| 566 | RSA_PSS_PARAMS *pss = NULL; | ||
| 567 | X509_ALGOR *mgf1alg = NULL; | ||
| 568 | ASN1_STRING *os1 = NULL, *os2 = NULL; | ||
| 569 | EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); | ||
| 570 | int saltlen, rv = 0; | ||
| 571 | |||
| 572 | sigmd = EVP_MD_CTX_md(ctx); | ||
| 573 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) | ||
| 574 | goto err; | ||
| 575 | if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) | ||
| 576 | goto err; | ||
| 577 | if (saltlen == -1) | ||
| 578 | saltlen = EVP_MD_size(sigmd); | ||
| 579 | else if (saltlen == -2) { | ||
| 580 | saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; | ||
| 581 | if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) | ||
| 582 | saltlen--; | ||
| 583 | } | ||
| 584 | pss = RSA_PSS_PARAMS_new(); | ||
| 585 | if (!pss) | ||
| 586 | goto err; | ||
| 587 | if (saltlen != 20) { | ||
| 588 | pss->saltLength = ASN1_INTEGER_new(); | ||
| 589 | if (!pss->saltLength) | ||
| 590 | goto err; | ||
| 591 | if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) | ||
| 592 | goto err; | ||
| 593 | } | ||
| 594 | if (EVP_MD_type(sigmd) != NID_sha1) { | ||
| 595 | pss->hashAlgorithm = X509_ALGOR_new(); | ||
| 596 | if (!pss->hashAlgorithm) | ||
| 597 | goto err; | ||
| 598 | X509_ALGOR_set_md(pss->hashAlgorithm, sigmd); | ||
| 599 | } | ||
| 600 | if (EVP_MD_type(mgf1md) != NID_sha1) { | ||
| 601 | ASN1_STRING *stmp = NULL; | ||
| 602 | /* need to embed algorithm ID inside another */ | ||
| 603 | mgf1alg = X509_ALGOR_new(); | ||
| 604 | X509_ALGOR_set_md(mgf1alg, mgf1md); | ||
| 605 | if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR), | ||
| 606 | &stmp)) | ||
| 607 | goto err; | ||
| 608 | pss->maskGenAlgorithm = X509_ALGOR_new(); | ||
| 609 | if (!pss->maskGenAlgorithm) | ||
| 610 | goto err; | ||
| 611 | X509_ALGOR_set0(pss->maskGenAlgorithm, | ||
| 612 | OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp); | ||
| 613 | } | ||
| 614 | /* Finally create string with pss parameter encoding. */ | ||
| 615 | if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1)) | ||
| 616 | goto err; | ||
| 617 | if (alg2) { | ||
| 618 | os2 = ASN1_STRING_dup(os1); | ||
| 619 | if (!os2) | ||
| 620 | goto err; | ||
| 621 | X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss), | ||
| 622 | V_ASN1_SEQUENCE, os2); | ||
| 623 | } | ||
| 624 | X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss), | ||
| 625 | V_ASN1_SEQUENCE, os1); | ||
| 626 | os1 = os2 = NULL; | ||
| 627 | rv = 3; | ||
| 628 | err: | ||
| 629 | if (mgf1alg) | ||
| 630 | X509_ALGOR_free(mgf1alg); | ||
| 631 | if (pss) | ||
| 632 | RSA_PSS_PARAMS_free(pss); | ||
| 633 | ASN1_STRING_free(os1); | ||
| 634 | return rv; | ||
| 635 | } | ||
| 636 | return 2; | ||
| 637 | } | ||
| 638 | |||
| 639 | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = { | ||
| 640 | { | ||
| 641 | .pkey_id = EVP_PKEY_RSA, | ||
| 642 | .pkey_base_id = EVP_PKEY_RSA, | ||
| 643 | .pkey_flags = ASN1_PKEY_SIGPARAM_NULL, | ||
| 644 | |||
| 645 | .pem_str = "RSA", | ||
| 646 | .info = "OpenSSL RSA method", | ||
| 647 | |||
| 648 | .pub_decode = rsa_pub_decode, | ||
| 649 | .pub_encode = rsa_pub_encode, | ||
| 650 | .pub_cmp = rsa_pub_cmp, | ||
| 651 | .pub_print = rsa_pub_print, | ||
| 652 | |||
| 653 | .priv_decode = rsa_priv_decode, | ||
| 654 | .priv_encode = rsa_priv_encode, | ||
| 655 | .priv_print = rsa_priv_print, | ||
| 656 | |||
| 657 | .pkey_size = int_rsa_size, | ||
| 658 | .pkey_bits = rsa_bits, | ||
| 659 | |||
| 660 | .sig_print = rsa_sig_print, | ||
| 661 | |||
| 662 | .pkey_free = int_rsa_free, | ||
| 663 | .pkey_ctrl = rsa_pkey_ctrl, | ||
| 664 | .old_priv_decode = old_rsa_priv_decode, | ||
| 665 | .old_priv_encode = old_rsa_priv_encode, | ||
| 666 | .item_verify = rsa_item_verify, | ||
| 667 | .item_sign = rsa_item_sign | ||
| 668 | }, | ||
| 669 | |||
| 670 | { | ||
| 671 | .pkey_id = EVP_PKEY_RSA2, | ||
| 672 | .pkey_base_id = EVP_PKEY_RSA, | ||
| 673 | .pkey_flags = ASN1_PKEY_ALIAS | ||
| 674 | } | ||
| 675 | }; | ||
