Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 2 | * project 2006. |
| 3 | */ |
| 4 | /* ==================================================================== |
| 5 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in |
| 16 | * the documentation and/or other materials provided with the |
| 17 | * distribution. |
| 18 | * |
| 19 | * 3. All advertising materials mentioning features or use of this |
| 20 | * software must display the following acknowledgment: |
| 21 | * "This product includes software developed by the OpenSSL Project |
| 22 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 23 | * |
| 24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 25 | * endorse or promote products derived from this software without |
| 26 | * prior written permission. For written permission, please contact |
| 27 | * licensing@OpenSSL.org. |
| 28 | * |
| 29 | * 5. Products derived from this software may not be called "OpenSSL" |
| 30 | * nor may "OpenSSL" appear in their names without prior written |
| 31 | * permission of the OpenSSL Project. |
| 32 | * |
| 33 | * 6. Redistributions of any form whatsoever must retain the following |
| 34 | * acknowledgment: |
| 35 | * "This product includes software developed by the OpenSSL Project |
| 36 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 37 | * |
| 38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 49 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 50 | * ==================================================================== |
| 51 | * |
| 52 | * This product includes cryptographic software written by Eric Young |
| 53 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 54 | * Hudson (tjh@cryptsoft.com). |
| 55 | * |
| 56 | */ |
| 57 | |
| 58 | #include <stdio.h> |
| 59 | #include "cryptlib.h" |
| 60 | #include <openssl/x509.h> |
| 61 | #include <openssl/ec.h> |
| 62 | #include <openssl/bn.h> |
| 63 | #ifndef OPENSSL_NO_CMS |
| 64 | #include <openssl/cms.h> |
| 65 | #endif |
| 66 | #include "asn1_locl.h" |
| 67 | |
| 68 | static int eckey_param2type(int *pptype, void **ppval, EC_KEY *ec_key) |
| 69 | { |
| 70 | const EC_GROUP *group; |
| 71 | int nid; |
| 72 | if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) |
| 73 | { |
| 74 | ECerr(EC_F_ECKEY_PARAM2TYPE, EC_R_MISSING_PARAMETERS); |
| 75 | return 0; |
| 76 | } |
| 77 | if (EC_GROUP_get_asn1_flag(group) |
| 78 | && (nid = EC_GROUP_get_curve_name(group))) |
| 79 | /* we have a 'named curve' => just set the OID */ |
| 80 | { |
| 81 | *ppval = OBJ_nid2obj(nid); |
| 82 | *pptype = V_ASN1_OBJECT; |
| 83 | } |
| 84 | else /* explicit parameters */ |
| 85 | { |
| 86 | ASN1_STRING *pstr = NULL; |
| 87 | pstr = ASN1_STRING_new(); |
| 88 | if (!pstr) |
| 89 | return 0; |
| 90 | pstr->length = i2d_ECParameters(ec_key, &pstr->data); |
| 91 | if (pstr->length < 0) |
| 92 | { |
| 93 | ASN1_STRING_free(pstr); |
| 94 | ECerr(EC_F_ECKEY_PARAM2TYPE, ERR_R_EC_LIB); |
| 95 | return 0; |
| 96 | } |
| 97 | *ppval = pstr; |
| 98 | *pptype = V_ASN1_SEQUENCE; |
| 99 | } |
| 100 | return 1; |
| 101 | } |
| 102 | |
| 103 | static int eckey_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
| 104 | { |
| 105 | EC_KEY *ec_key = pkey->pkey.ec; |
| 106 | void *pval = NULL; |
| 107 | int ptype; |
| 108 | unsigned char *penc = NULL, *p; |
| 109 | int penclen; |
| 110 | |
| 111 | if (!eckey_param2type(&ptype, &pval, ec_key)) |
| 112 | { |
| 113 | ECerr(EC_F_ECKEY_PUB_ENCODE, ERR_R_EC_LIB); |
| 114 | return 0; |
| 115 | } |
| 116 | penclen = i2o_ECPublicKey(ec_key, NULL); |
| 117 | if (penclen <= 0) |
| 118 | goto err; |
| 119 | penc = OPENSSL_malloc(penclen); |
| 120 | if (!penc) |
| 121 | goto err; |
| 122 | p = penc; |
| 123 | penclen = i2o_ECPublicKey(ec_key, &p); |
| 124 | if (penclen <= 0) |
| 125 | goto err; |
| 126 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC), |
| 127 | ptype, pval, penc, penclen)) |
| 128 | return 1; |
| 129 | err: |
| 130 | if (ptype == V_ASN1_OBJECT) |
| 131 | ASN1_OBJECT_free(pval); |
| 132 | else |
| 133 | ASN1_STRING_free(pval); |
| 134 | if (penc) |
| 135 | OPENSSL_free(penc); |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static EC_KEY *eckey_type2param(int ptype, void *pval) |
| 140 | { |
| 141 | EC_KEY *eckey = NULL; |
| 142 | if (ptype == V_ASN1_SEQUENCE) |
| 143 | { |
| 144 | ASN1_STRING *pstr = pval; |
| 145 | const unsigned char *pm = NULL; |
| 146 | int pmlen; |
| 147 | pm = pstr->data; |
| 148 | pmlen = pstr->length; |
| 149 | if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) |
| 150 | { |
| 151 | ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR); |
| 152 | goto ecerr; |
| 153 | } |
| 154 | } |
| 155 | else if (ptype == V_ASN1_OBJECT) |
| 156 | { |
| 157 | ASN1_OBJECT *poid = pval; |
| 158 | EC_GROUP *group; |
| 159 | |
| 160 | /* type == V_ASN1_OBJECT => the parameters are given |
| 161 | * by an asn1 OID |
| 162 | */ |
| 163 | if ((eckey = EC_KEY_new()) == NULL) |
| 164 | { |
| 165 | ECerr(EC_F_ECKEY_TYPE2PARAM, ERR_R_MALLOC_FAILURE); |
| 166 | goto ecerr; |
| 167 | } |
| 168 | group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(poid)); |
| 169 | if (group == NULL) |
| 170 | goto ecerr; |
| 171 | EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE); |
| 172 | if (EC_KEY_set_group(eckey, group) == 0) |
| 173 | goto ecerr; |
| 174 | EC_GROUP_free(group); |
| 175 | } |
| 176 | else |
| 177 | { |
| 178 | ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR); |
| 179 | goto ecerr; |
| 180 | } |
| 181 | |
| 182 | return eckey; |
| 183 | |
| 184 | ecerr: |
| 185 | if (eckey) |
| 186 | EC_KEY_free(eckey); |
| 187 | return NULL; |
| 188 | } |
| 189 | |
| 190 | static int eckey_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
| 191 | { |
| 192 | const unsigned char *p = NULL; |
| 193 | void *pval; |
| 194 | int ptype, pklen; |
| 195 | EC_KEY *eckey = NULL; |
| 196 | X509_ALGOR *palg; |
| 197 | |
| 198 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) |
| 199 | return 0; |
| 200 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); |
| 201 | |
| 202 | eckey = eckey_type2param(ptype, pval); |
| 203 | |
| 204 | if (!eckey) |
| 205 | { |
| 206 | ECerr(EC_F_ECKEY_PUB_DECODE, ERR_R_EC_LIB); |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | /* We have parameters now set public key */ |
| 211 | if (!o2i_ECPublicKey(&eckey, &p, pklen)) |
| 212 | { |
| 213 | ECerr(EC_F_ECKEY_PUB_DECODE, EC_R_DECODE_ERROR); |
| 214 | goto ecerr; |
| 215 | } |
| 216 | |
| 217 | EVP_PKEY_assign_EC_KEY(pkey, eckey); |
| 218 | return 1; |
| 219 | |
| 220 | ecerr: |
| 221 | if (eckey) |
| 222 | EC_KEY_free(eckey); |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
| 227 | { |
| 228 | int r; |
| 229 | const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec); |
| 230 | const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec), |
| 231 | *pb = EC_KEY_get0_public_key(b->pkey.ec); |
| 232 | r = EC_POINT_cmp(group, pa, pb, NULL); |
| 233 | if (r == 0) |
| 234 | return 1; |
| 235 | if (r == 1) |
| 236 | return 0; |
| 237 | return -2; |
| 238 | } |
| 239 | |
| 240 | static int eckey_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
| 241 | { |
| 242 | const unsigned char *p = NULL; |
| 243 | void *pval; |
| 244 | int ptype, pklen; |
| 245 | EC_KEY *eckey = NULL; |
| 246 | X509_ALGOR *palg; |
| 247 | |
| 248 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) |
| 249 | return 0; |
| 250 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); |
| 251 | |
| 252 | eckey = eckey_type2param(ptype, pval); |
| 253 | |
| 254 | if (!eckey) |
| 255 | goto ecliberr; |
| 256 | |
| 257 | /* We have parameters now set private key */ |
| 258 | if (!d2i_ECPrivateKey(&eckey, &p, pklen)) |
| 259 | { |
| 260 | ECerr(EC_F_ECKEY_PRIV_DECODE, EC_R_DECODE_ERROR); |
| 261 | goto ecerr; |
| 262 | } |
| 263 | |
| 264 | /* calculate public key (if necessary) */ |
| 265 | if (EC_KEY_get0_public_key(eckey) == NULL) |
| 266 | { |
| 267 | const BIGNUM *priv_key; |
| 268 | const EC_GROUP *group; |
| 269 | EC_POINT *pub_key; |
| 270 | /* the public key was not included in the SEC1 private |
| 271 | * key => calculate the public key */ |
| 272 | group = EC_KEY_get0_group(eckey); |
| 273 | pub_key = EC_POINT_new(group); |
| 274 | if (pub_key == NULL) |
| 275 | { |
| 276 | ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB); |
| 277 | goto ecliberr; |
| 278 | } |
| 279 | if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) |
| 280 | { |
| 281 | EC_POINT_free(pub_key); |
| 282 | ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB); |
| 283 | goto ecliberr; |
| 284 | } |
| 285 | priv_key = EC_KEY_get0_private_key(eckey); |
| 286 | if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)) |
| 287 | { |
| 288 | EC_POINT_free(pub_key); |
| 289 | ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB); |
| 290 | goto ecliberr; |
| 291 | } |
| 292 | if (EC_KEY_set_public_key(eckey, pub_key) == 0) |
| 293 | { |
| 294 | EC_POINT_free(pub_key); |
| 295 | ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB); |
| 296 | goto ecliberr; |
| 297 | } |
| 298 | EC_POINT_free(pub_key); |
| 299 | } |
| 300 | |
| 301 | EVP_PKEY_assign_EC_KEY(pkey, eckey); |
| 302 | return 1; |
| 303 | |
| 304 | ecliberr: |
| 305 | ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB); |
| 306 | ecerr: |
| 307 | if (eckey) |
| 308 | EC_KEY_free(eckey); |
| 309 | return 0; |
| 310 | } |
| 311 | |
| 312 | static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
| 313 | { |
| 314 | EC_KEY *ec_key; |
| 315 | unsigned char *ep, *p; |
| 316 | int eplen, ptype; |
| 317 | void *pval; |
| 318 | unsigned int tmp_flags, old_flags; |
| 319 | |
| 320 | ec_key = pkey->pkey.ec; |
| 321 | |
| 322 | if (!eckey_param2type(&ptype, &pval, ec_key)) |
| 323 | { |
| 324 | ECerr(EC_F_ECKEY_PRIV_ENCODE, EC_R_DECODE_ERROR); |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | /* set the private key */ |
| 329 | |
| 330 | /* do not include the parameters in the SEC1 private key |
| 331 | * see PKCS#11 12.11 */ |
| 332 | old_flags = EC_KEY_get_enc_flags(ec_key); |
| 333 | tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS; |
| 334 | EC_KEY_set_enc_flags(ec_key, tmp_flags); |
| 335 | eplen = i2d_ECPrivateKey(ec_key, NULL); |
| 336 | if (!eplen) |
| 337 | { |
| 338 | EC_KEY_set_enc_flags(ec_key, old_flags); |
| 339 | ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB); |
| 340 | return 0; |
| 341 | } |
| 342 | ep = (unsigned char *) OPENSSL_malloc(eplen); |
| 343 | if (!ep) |
| 344 | { |
| 345 | EC_KEY_set_enc_flags(ec_key, old_flags); |
| 346 | ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
| 347 | return 0; |
| 348 | } |
| 349 | p = ep; |
| 350 | if (!i2d_ECPrivateKey(ec_key, &p)) |
| 351 | { |
| 352 | EC_KEY_set_enc_flags(ec_key, old_flags); |
| 353 | OPENSSL_free(ep); |
| 354 | ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB); |
| 355 | } |
| 356 | /* restore old encoding flags */ |
| 357 | EC_KEY_set_enc_flags(ec_key, old_flags); |
| 358 | |
| 359 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0, |
| 360 | ptype, pval, ep, eplen)) |
| 361 | return 0; |
| 362 | |
| 363 | return 1; |
| 364 | } |
| 365 | |
| 366 | static int int_ec_size(const EVP_PKEY *pkey) |
| 367 | { |
| 368 | return ECDSA_size(pkey->pkey.ec); |
| 369 | } |
| 370 | |
| 371 | static int ec_bits(const EVP_PKEY *pkey) |
| 372 | { |
| 373 | BIGNUM *order = BN_new(); |
| 374 | const EC_GROUP *group; |
| 375 | int ret; |
| 376 | |
| 377 | if (!order) |
| 378 | { |
| 379 | ERR_clear_error(); |
| 380 | return 0; |
| 381 | } |
| 382 | group = EC_KEY_get0_group(pkey->pkey.ec); |
| 383 | if (!EC_GROUP_get_order(group, order, NULL)) |
| 384 | { |
| 385 | ERR_clear_error(); |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | ret = BN_num_bits(order); |
| 390 | BN_free(order); |
| 391 | return ret; |
| 392 | } |
| 393 | |
| 394 | static int ec_missing_parameters(const EVP_PKEY *pkey) |
| 395 | { |
| 396 | if (EC_KEY_get0_group(pkey->pkey.ec) == NULL) |
| 397 | return 1; |
| 398 | return 0; |
| 399 | } |
| 400 | |
| 401 | static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
| 402 | { |
| 403 | EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec)); |
| 404 | if (group == NULL) |
| 405 | return 0; |
| 406 | if (EC_KEY_set_group(to->pkey.ec, group) == 0) |
| 407 | return 0; |
| 408 | EC_GROUP_free(group); |
| 409 | return 1; |
| 410 | } |
| 411 | |
| 412 | static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
| 413 | { |
| 414 | const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec), |
| 415 | *group_b = EC_KEY_get0_group(b->pkey.ec); |
| 416 | if (EC_GROUP_cmp(group_a, group_b, NULL)) |
| 417 | return 0; |
| 418 | else |
| 419 | return 1; |
| 420 | } |
| 421 | |
| 422 | static void int_ec_free(EVP_PKEY *pkey) |
| 423 | { |
| 424 | EC_KEY_free(pkey->pkey.ec); |
| 425 | } |
| 426 | |
| 427 | static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype) |
| 428 | { |
| 429 | unsigned char *buffer=NULL; |
| 430 | const char *ecstr; |
| 431 | size_t buf_len=0, i; |
| 432 | int ret=0, reason=ERR_R_BIO_LIB; |
| 433 | BIGNUM *pub_key=NULL, *order=NULL; |
| 434 | BN_CTX *ctx=NULL; |
| 435 | const EC_GROUP *group; |
| 436 | const EC_POINT *public_key; |
| 437 | const BIGNUM *priv_key; |
| 438 | |
| 439 | if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) |
| 440 | { |
| 441 | reason = ERR_R_PASSED_NULL_PARAMETER; |
| 442 | goto err; |
| 443 | } |
| 444 | |
| 445 | ctx = BN_CTX_new(); |
| 446 | if (ctx == NULL) |
| 447 | { |
| 448 | reason = ERR_R_MALLOC_FAILURE; |
| 449 | goto err; |
| 450 | } |
| 451 | |
| 452 | if (ktype > 0) |
| 453 | { |
| 454 | public_key = EC_KEY_get0_public_key(x); |
| 455 | if ((pub_key = EC_POINT_point2bn(group, public_key, |
| 456 | EC_KEY_get_conv_form(x), NULL, ctx)) == NULL) |
| 457 | { |
| 458 | reason = ERR_R_EC_LIB; |
| 459 | goto err; |
| 460 | } |
| 461 | if (pub_key) |
| 462 | buf_len = (size_t)BN_num_bytes(pub_key); |
| 463 | } |
| 464 | |
| 465 | if (ktype == 2) |
| 466 | { |
| 467 | priv_key = EC_KEY_get0_private_key(x); |
| 468 | if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len) |
| 469 | buf_len = i; |
| 470 | } |
| 471 | else |
| 472 | priv_key = NULL; |
| 473 | |
| 474 | if (ktype > 0) |
| 475 | { |
| 476 | buf_len += 10; |
| 477 | if ((buffer = OPENSSL_malloc(buf_len)) == NULL) |
| 478 | { |
| 479 | reason = ERR_R_MALLOC_FAILURE; |
| 480 | goto err; |
| 481 | } |
| 482 | } |
| 483 | if (ktype == 2) |
| 484 | ecstr = "Private-Key"; |
| 485 | else if (ktype == 1) |
| 486 | ecstr = "Public-Key"; |
| 487 | else |
| 488 | ecstr = "ECDSA-Parameters"; |
| 489 | |
| 490 | if (!BIO_indent(bp, off, 128)) |
| 491 | goto err; |
| 492 | if ((order = BN_new()) == NULL) |
| 493 | goto err; |
| 494 | if (!EC_GROUP_get_order(group, order, NULL)) |
| 495 | goto err; |
| 496 | if (BIO_printf(bp, "%s: (%d bit)\n", ecstr, |
| 497 | BN_num_bits(order)) <= 0) goto err; |
| 498 | |
| 499 | if ((priv_key != NULL) && !ASN1_bn_print(bp, "priv:", priv_key, |
| 500 | buffer, off)) |
| 501 | goto err; |
| 502 | if ((pub_key != NULL) && !ASN1_bn_print(bp, "pub: ", pub_key, |
| 503 | buffer, off)) |
| 504 | goto err; |
| 505 | if (!ECPKParameters_print(bp, group, off)) |
| 506 | goto err; |
| 507 | ret=1; |
| 508 | err: |
| 509 | if (!ret) |
| 510 | ECerr(EC_F_DO_EC_KEY_PRINT, reason); |
| 511 | if (pub_key) |
| 512 | BN_free(pub_key); |
| 513 | if (order) |
| 514 | BN_free(order); |
| 515 | if (ctx) |
| 516 | BN_CTX_free(ctx); |
| 517 | if (buffer != NULL) |
| 518 | OPENSSL_free(buffer); |
| 519 | return(ret); |
| 520 | } |
| 521 | |
| 522 | static int eckey_param_decode(EVP_PKEY *pkey, |
| 523 | const unsigned char **pder, int derlen) |
| 524 | { |
| 525 | EC_KEY *eckey; |
| 526 | if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) |
| 527 | { |
| 528 | ECerr(EC_F_ECKEY_PARAM_DECODE, ERR_R_EC_LIB); |
| 529 | return 0; |
| 530 | } |
| 531 | EVP_PKEY_assign_EC_KEY(pkey, eckey); |
| 532 | return 1; |
| 533 | } |
| 534 | |
| 535 | static int eckey_param_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| 536 | { |
| 537 | return i2d_ECParameters(pkey->pkey.ec, pder); |
| 538 | } |
| 539 | |
| 540 | static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 541 | ASN1_PCTX *ctx) |
| 542 | { |
| 543 | return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0); |
| 544 | } |
| 545 | |
| 546 | static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 547 | ASN1_PCTX *ctx) |
| 548 | { |
| 549 | return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1); |
| 550 | } |
| 551 | |
| 552 | |
| 553 | static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 554 | ASN1_PCTX *ctx) |
| 555 | { |
| 556 | return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2); |
| 557 | } |
| 558 | |
| 559 | static int old_ec_priv_decode(EVP_PKEY *pkey, |
| 560 | const unsigned char **pder, int derlen) |
| 561 | { |
| 562 | EC_KEY *ec; |
| 563 | if (!(ec = d2i_ECPrivateKey (NULL, pder, derlen))) |
| 564 | { |
| 565 | ECerr(EC_F_OLD_EC_PRIV_DECODE, EC_R_DECODE_ERROR); |
| 566 | return 0; |
| 567 | } |
| 568 | EVP_PKEY_assign_EC_KEY(pkey, ec); |
| 569 | return 1; |
| 570 | } |
| 571 | |
| 572 | static int old_ec_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| 573 | { |
| 574 | return i2d_ECPrivateKey(pkey->pkey.ec, pder); |
| 575 | } |
| 576 | |
| 577 | static int ec_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
| 578 | { |
| 579 | switch (op) |
| 580 | { |
| 581 | case ASN1_PKEY_CTRL_PKCS7_SIGN: |
| 582 | if (arg1 == 0) |
| 583 | { |
| 584 | int snid, hnid; |
| 585 | X509_ALGOR *alg1, *alg2; |
| 586 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2); |
| 587 | if (alg1 == NULL || alg1->algorithm == NULL) |
| 588 | return -1; |
| 589 | hnid = OBJ_obj2nid(alg1->algorithm); |
| 590 | if (hnid == NID_undef) |
| 591 | return -1; |
| 592 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) |
| 593 | return -1; |
| 594 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); |
| 595 | } |
| 596 | return 1; |
| 597 | #ifndef OPENSSL_NO_CMS |
| 598 | case ASN1_PKEY_CTRL_CMS_SIGN: |
| 599 | if (arg1 == 0) |
| 600 | { |
| 601 | int snid, hnid; |
| 602 | X509_ALGOR *alg1, *alg2; |
| 603 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, |
| 604 | &alg1, &alg2); |
| 605 | if (alg1 == NULL || alg1->algorithm == NULL) |
| 606 | return -1; |
| 607 | hnid = OBJ_obj2nid(alg1->algorithm); |
| 608 | if (hnid == NID_undef) |
| 609 | return -1; |
| 610 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) |
| 611 | return -1; |
| 612 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); |
| 613 | } |
| 614 | return 1; |
| 615 | #endif |
| 616 | |
| 617 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
| 618 | *(int *)arg2 = NID_sha1; |
| 619 | return 2; |
| 620 | |
| 621 | default: |
| 622 | return -2; |
| 623 | |
| 624 | } |
| 625 | |
| 626 | } |
| 627 | |
| 628 | const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = |
| 629 | { |
| 630 | EVP_PKEY_EC, |
| 631 | EVP_PKEY_EC, |
| 632 | 0, |
| 633 | "EC", |
| 634 | "OpenSSL EC algorithm", |
| 635 | |
| 636 | eckey_pub_decode, |
| 637 | eckey_pub_encode, |
| 638 | eckey_pub_cmp, |
| 639 | eckey_pub_print, |
| 640 | |
| 641 | eckey_priv_decode, |
| 642 | eckey_priv_encode, |
| 643 | eckey_priv_print, |
| 644 | |
| 645 | int_ec_size, |
| 646 | ec_bits, |
| 647 | |
| 648 | eckey_param_decode, |
| 649 | eckey_param_encode, |
| 650 | ec_missing_parameters, |
| 651 | ec_copy_parameters, |
| 652 | ec_cmp_parameters, |
| 653 | eckey_param_print, |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 654 | |
| 655 | int_ec_free, |
| 656 | ec_pkey_ctrl, |
| 657 | old_ec_priv_decode, |
| 658 | old_ec_priv_encode |
| 659 | }; |