Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/pkcs7/pk7_lib.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 | #include <stdio.h> |
| 60 | #include "cryptlib.h" |
| 61 | #include <openssl/objects.h> |
| 62 | #include <openssl/x509.h> |
| 63 | #include "asn1_locl.h" |
| 64 | |
| 65 | long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg) |
| 66 | { |
| 67 | int nid; |
| 68 | long ret; |
| 69 | |
| 70 | nid=OBJ_obj2nid(p7->type); |
| 71 | |
| 72 | switch (cmd) |
| 73 | { |
| 74 | case PKCS7_OP_SET_DETACHED_SIGNATURE: |
| 75 | if (nid == NID_pkcs7_signed) |
| 76 | { |
| 77 | ret=p7->detached=(int)larg; |
| 78 | if (ret && PKCS7_type_is_data(p7->d.sign->contents)) |
| 79 | { |
| 80 | ASN1_OCTET_STRING *os; |
| 81 | os=p7->d.sign->contents->d.data; |
| 82 | ASN1_OCTET_STRING_free(os); |
| 83 | p7->d.sign->contents->d.data = NULL; |
| 84 | } |
| 85 | } |
| 86 | else |
| 87 | { |
| 88 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
| 89 | ret=0; |
| 90 | } |
| 91 | break; |
| 92 | case PKCS7_OP_GET_DETACHED_SIGNATURE: |
| 93 | if (nid == NID_pkcs7_signed) |
| 94 | { |
| 95 | if(!p7->d.sign || !p7->d.sign->contents->d.ptr) |
| 96 | ret = 1; |
| 97 | else ret = 0; |
| 98 | |
| 99 | p7->detached = ret; |
| 100 | } |
| 101 | else |
| 102 | { |
| 103 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
| 104 | ret=0; |
| 105 | } |
| 106 | |
| 107 | break; |
| 108 | default: |
| 109 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION); |
| 110 | ret=0; |
| 111 | } |
| 112 | return(ret); |
| 113 | } |
| 114 | |
| 115 | int PKCS7_content_new(PKCS7 *p7, int type) |
| 116 | { |
| 117 | PKCS7 *ret=NULL; |
| 118 | |
| 119 | if ((ret=PKCS7_new()) == NULL) goto err; |
| 120 | if (!PKCS7_set_type(ret,type)) goto err; |
| 121 | if (!PKCS7_set_content(p7,ret)) goto err; |
| 122 | |
| 123 | return(1); |
| 124 | err: |
| 125 | if (ret != NULL) PKCS7_free(ret); |
| 126 | return(0); |
| 127 | } |
| 128 | |
| 129 | int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data) |
| 130 | { |
| 131 | int i; |
| 132 | |
| 133 | i=OBJ_obj2nid(p7->type); |
| 134 | switch (i) |
| 135 | { |
| 136 | case NID_pkcs7_signed: |
| 137 | if (p7->d.sign->contents != NULL) |
| 138 | PKCS7_free(p7->d.sign->contents); |
| 139 | p7->d.sign->contents=p7_data; |
| 140 | break; |
| 141 | case NID_pkcs7_digest: |
| 142 | if (p7->d.digest->contents != NULL) |
| 143 | PKCS7_free(p7->d.digest->contents); |
| 144 | p7->d.digest->contents=p7_data; |
| 145 | break; |
| 146 | case NID_pkcs7_data: |
| 147 | case NID_pkcs7_enveloped: |
| 148 | case NID_pkcs7_signedAndEnveloped: |
| 149 | case NID_pkcs7_encrypted: |
| 150 | default: |
| 151 | PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
| 152 | goto err; |
| 153 | } |
| 154 | return(1); |
| 155 | err: |
| 156 | return(0); |
| 157 | } |
| 158 | |
| 159 | int PKCS7_set_type(PKCS7 *p7, int type) |
| 160 | { |
| 161 | ASN1_OBJECT *obj; |
| 162 | |
| 163 | /*PKCS7_content_free(p7);*/ |
| 164 | obj=OBJ_nid2obj(type); /* will not fail */ |
| 165 | |
| 166 | switch (type) |
| 167 | { |
| 168 | case NID_pkcs7_signed: |
| 169 | p7->type=obj; |
| 170 | if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL) |
| 171 | goto err; |
| 172 | if (!ASN1_INTEGER_set(p7->d.sign->version,1)) |
| 173 | { |
| 174 | PKCS7_SIGNED_free(p7->d.sign); |
| 175 | p7->d.sign=NULL; |
| 176 | goto err; |
| 177 | } |
| 178 | break; |
| 179 | case NID_pkcs7_data: |
| 180 | p7->type=obj; |
| 181 | if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL) |
| 182 | goto err; |
| 183 | break; |
| 184 | case NID_pkcs7_signedAndEnveloped: |
| 185 | p7->type=obj; |
| 186 | if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new()) |
| 187 | == NULL) goto err; |
| 188 | ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1); |
| 189 | if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1)) |
| 190 | goto err; |
| 191 | p7->d.signed_and_enveloped->enc_data->content_type |
| 192 | = OBJ_nid2obj(NID_pkcs7_data); |
| 193 | break; |
| 194 | case NID_pkcs7_enveloped: |
| 195 | p7->type=obj; |
| 196 | if ((p7->d.enveloped=PKCS7_ENVELOPE_new()) |
| 197 | == NULL) goto err; |
| 198 | if (!ASN1_INTEGER_set(p7->d.enveloped->version,0)) |
| 199 | goto err; |
| 200 | p7->d.enveloped->enc_data->content_type |
| 201 | = OBJ_nid2obj(NID_pkcs7_data); |
| 202 | break; |
| 203 | case NID_pkcs7_encrypted: |
| 204 | p7->type=obj; |
| 205 | if ((p7->d.encrypted=PKCS7_ENCRYPT_new()) |
| 206 | == NULL) goto err; |
| 207 | if (!ASN1_INTEGER_set(p7->d.encrypted->version,0)) |
| 208 | goto err; |
| 209 | p7->d.encrypted->enc_data->content_type |
| 210 | = OBJ_nid2obj(NID_pkcs7_data); |
| 211 | break; |
| 212 | |
| 213 | case NID_pkcs7_digest: |
| 214 | p7->type=obj; |
| 215 | if ((p7->d.digest=PKCS7_DIGEST_new()) |
| 216 | == NULL) goto err; |
| 217 | if (!ASN1_INTEGER_set(p7->d.digest->version,0)) |
| 218 | goto err; |
| 219 | break; |
| 220 | default: |
| 221 | PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
| 222 | goto err; |
| 223 | } |
| 224 | return(1); |
| 225 | err: |
| 226 | return(0); |
| 227 | } |
| 228 | |
| 229 | int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other) |
| 230 | { |
| 231 | p7->type = OBJ_nid2obj(type); |
| 232 | p7->d.other = other; |
| 233 | return 1; |
| 234 | } |
| 235 | |
| 236 | int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi) |
| 237 | { |
| 238 | int i,j,nid; |
| 239 | X509_ALGOR *alg; |
| 240 | STACK_OF(PKCS7_SIGNER_INFO) *signer_sk; |
| 241 | STACK_OF(X509_ALGOR) *md_sk; |
| 242 | |
| 243 | i=OBJ_obj2nid(p7->type); |
| 244 | switch (i) |
| 245 | { |
| 246 | case NID_pkcs7_signed: |
| 247 | signer_sk= p7->d.sign->signer_info; |
| 248 | md_sk= p7->d.sign->md_algs; |
| 249 | break; |
| 250 | case NID_pkcs7_signedAndEnveloped: |
| 251 | signer_sk= p7->d.signed_and_enveloped->signer_info; |
| 252 | md_sk= p7->d.signed_and_enveloped->md_algs; |
| 253 | break; |
| 254 | default: |
| 255 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE); |
| 256 | return(0); |
| 257 | } |
| 258 | |
| 259 | nid=OBJ_obj2nid(psi->digest_alg->algorithm); |
| 260 | |
| 261 | /* If the digest is not currently listed, add it */ |
| 262 | j=0; |
| 263 | for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) |
| 264 | { |
| 265 | alg=sk_X509_ALGOR_value(md_sk,i); |
| 266 | if (OBJ_obj2nid(alg->algorithm) == nid) |
| 267 | { |
| 268 | j=1; |
| 269 | break; |
| 270 | } |
| 271 | } |
| 272 | if (!j) /* we need to add another algorithm */ |
| 273 | { |
| 274 | if(!(alg=X509_ALGOR_new()) |
| 275 | || !(alg->parameter = ASN1_TYPE_new())) |
| 276 | { |
| 277 | X509_ALGOR_free(alg); |
| 278 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE); |
| 279 | return(0); |
| 280 | } |
| 281 | alg->algorithm=OBJ_nid2obj(nid); |
| 282 | alg->parameter->type = V_ASN1_NULL; |
| 283 | if (!sk_X509_ALGOR_push(md_sk,alg)) |
| 284 | { |
| 285 | X509_ALGOR_free(alg); |
| 286 | return 0; |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | if (!sk_PKCS7_SIGNER_INFO_push(signer_sk,psi)) |
| 291 | return 0; |
| 292 | return(1); |
| 293 | } |
| 294 | |
| 295 | int PKCS7_add_certificate(PKCS7 *p7, X509 *x509) |
| 296 | { |
| 297 | int i; |
| 298 | STACK_OF(X509) **sk; |
| 299 | |
| 300 | i=OBJ_obj2nid(p7->type); |
| 301 | switch (i) |
| 302 | { |
| 303 | case NID_pkcs7_signed: |
| 304 | sk= &(p7->d.sign->cert); |
| 305 | break; |
| 306 | case NID_pkcs7_signedAndEnveloped: |
| 307 | sk= &(p7->d.signed_and_enveloped->cert); |
| 308 | break; |
| 309 | default: |
| 310 | PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE); |
| 311 | return(0); |
| 312 | } |
| 313 | |
| 314 | if (*sk == NULL) |
| 315 | *sk=sk_X509_new_null(); |
| 316 | if (*sk == NULL) |
| 317 | { |
| 318 | PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE); |
| 319 | return 0; |
| 320 | } |
| 321 | CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); |
| 322 | if (!sk_X509_push(*sk,x509)) |
| 323 | { |
| 324 | X509_free(x509); |
| 325 | return 0; |
| 326 | } |
| 327 | return(1); |
| 328 | } |
| 329 | |
| 330 | int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl) |
| 331 | { |
| 332 | int i; |
| 333 | STACK_OF(X509_CRL) **sk; |
| 334 | |
| 335 | i=OBJ_obj2nid(p7->type); |
| 336 | switch (i) |
| 337 | { |
| 338 | case NID_pkcs7_signed: |
| 339 | sk= &(p7->d.sign->crl); |
| 340 | break; |
| 341 | case NID_pkcs7_signedAndEnveloped: |
| 342 | sk= &(p7->d.signed_and_enveloped->crl); |
| 343 | break; |
| 344 | default: |
| 345 | PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE); |
| 346 | return(0); |
| 347 | } |
| 348 | |
| 349 | if (*sk == NULL) |
| 350 | *sk=sk_X509_CRL_new_null(); |
| 351 | if (*sk == NULL) |
| 352 | { |
| 353 | PKCS7err(PKCS7_F_PKCS7_ADD_CRL,ERR_R_MALLOC_FAILURE); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL); |
| 358 | if (!sk_X509_CRL_push(*sk,crl)) |
| 359 | { |
| 360 | X509_CRL_free(crl); |
| 361 | return 0; |
| 362 | } |
| 363 | return(1); |
| 364 | } |
| 365 | |
| 366 | int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey, |
| 367 | const EVP_MD *dgst) |
| 368 | { |
| 369 | int ret; |
| 370 | |
| 371 | /* We now need to add another PKCS7_SIGNER_INFO entry */ |
| 372 | if (!ASN1_INTEGER_set(p7i->version,1)) |
| 373 | goto err; |
| 374 | if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
| 375 | X509_get_issuer_name(x509))) |
| 376 | goto err; |
| 377 | |
| 378 | /* because ASN1_INTEGER_set is used to set a 'long' we will do |
| 379 | * things the ugly way. */ |
| 380 | M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
| 381 | if (!(p7i->issuer_and_serial->serial= |
| 382 | M_ASN1_INTEGER_dup(X509_get_serialNumber(x509)))) |
| 383 | goto err; |
| 384 | |
| 385 | /* lets keep the pkey around for a while */ |
| 386 | CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); |
| 387 | p7i->pkey=pkey; |
| 388 | |
| 389 | /* Set the algorithms */ |
| 390 | |
| 391 | X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)), |
| 392 | V_ASN1_NULL, NULL); |
| 393 | |
| 394 | if (pkey->ameth && pkey->ameth->pkey_ctrl) |
| 395 | { |
| 396 | ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, |
| 397 | 0, p7i); |
| 398 | if (ret > 0) |
| 399 | return 1; |
| 400 | if (ret != -2) |
| 401 | { |
| 402 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET, |
| 403 | PKCS7_R_SIGNING_CTRL_FAILURE); |
| 404 | return 0; |
| 405 | } |
| 406 | } |
| 407 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET, |
| 408 | PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| 409 | err: |
| 410 | return 0; |
| 411 | } |
| 412 | |
| 413 | PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey, |
| 414 | const EVP_MD *dgst) |
| 415 | { |
| 416 | PKCS7_SIGNER_INFO *si = NULL; |
| 417 | |
| 418 | if (dgst == NULL) |
| 419 | { |
| 420 | int def_nid; |
| 421 | if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0) |
| 422 | goto err; |
| 423 | dgst = EVP_get_digestbynid(def_nid); |
| 424 | if (dgst == NULL) |
| 425 | { |
| 426 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, |
| 427 | PKCS7_R_NO_DEFAULT_DIGEST); |
| 428 | goto err; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err; |
| 433 | if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err; |
| 434 | if (!PKCS7_add_signer(p7,si)) goto err; |
| 435 | return(si); |
| 436 | err: |
| 437 | if (si) |
| 438 | PKCS7_SIGNER_INFO_free(si); |
| 439 | return(NULL); |
| 440 | } |
| 441 | |
| 442 | int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md) |
| 443 | { |
| 444 | if (PKCS7_type_is_digest(p7)) |
| 445 | { |
| 446 | if(!(p7->d.digest->md->parameter = ASN1_TYPE_new())) |
| 447 | { |
| 448 | PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE); |
| 449 | return 0; |
| 450 | } |
| 451 | p7->d.digest->md->parameter->type = V_ASN1_NULL; |
| 452 | p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md)); |
| 453 | return 1; |
| 454 | } |
| 455 | |
| 456 | PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE); |
| 457 | return 1; |
| 458 | } |
| 459 | |
| 460 | STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7) |
| 461 | { |
| 462 | if (PKCS7_type_is_signed(p7)) |
| 463 | { |
| 464 | return(p7->d.sign->signer_info); |
| 465 | } |
| 466 | else if (PKCS7_type_is_signedAndEnveloped(p7)) |
| 467 | { |
| 468 | return(p7->d.signed_and_enveloped->signer_info); |
| 469 | } |
| 470 | else |
| 471 | return(NULL); |
| 472 | } |
| 473 | |
| 474 | void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk, |
| 475 | X509_ALGOR **pdig, X509_ALGOR **psig) |
| 476 | { |
| 477 | if (pk) |
| 478 | *pk = si->pkey; |
| 479 | if (pdig) |
| 480 | *pdig = si->digest_alg; |
| 481 | if (psig) |
| 482 | *psig = si->digest_enc_alg; |
| 483 | } |
| 484 | |
| 485 | void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc) |
| 486 | { |
| 487 | if (penc) |
| 488 | *penc = ri->key_enc_algor; |
| 489 | } |
| 490 | |
| 491 | PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509) |
| 492 | { |
| 493 | PKCS7_RECIP_INFO *ri; |
| 494 | |
| 495 | if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err; |
| 496 | if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err; |
| 497 | if (!PKCS7_add_recipient_info(p7,ri)) goto err; |
| 498 | return ri; |
| 499 | err: |
| 500 | if (ri) |
| 501 | PKCS7_RECIP_INFO_free(ri); |
| 502 | return NULL; |
| 503 | } |
| 504 | |
| 505 | int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri) |
| 506 | { |
| 507 | int i; |
| 508 | STACK_OF(PKCS7_RECIP_INFO) *sk; |
| 509 | |
| 510 | i=OBJ_obj2nid(p7->type); |
| 511 | switch (i) |
| 512 | { |
| 513 | case NID_pkcs7_signedAndEnveloped: |
| 514 | sk= p7->d.signed_and_enveloped->recipientinfo; |
| 515 | break; |
| 516 | case NID_pkcs7_enveloped: |
| 517 | sk= p7->d.enveloped->recipientinfo; |
| 518 | break; |
| 519 | default: |
| 520 | PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE); |
| 521 | return(0); |
| 522 | } |
| 523 | |
| 524 | if (!sk_PKCS7_RECIP_INFO_push(sk,ri)) |
| 525 | return 0; |
| 526 | return(1); |
| 527 | } |
| 528 | |
| 529 | int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509) |
| 530 | { |
| 531 | int ret; |
| 532 | EVP_PKEY *pkey = NULL; |
| 533 | if (!ASN1_INTEGER_set(p7i->version,0)) |
| 534 | return 0; |
| 535 | if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
| 536 | X509_get_issuer_name(x509))) |
| 537 | return 0; |
| 538 | |
| 539 | M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
| 540 | if (!(p7i->issuer_and_serial->serial= |
| 541 | M_ASN1_INTEGER_dup(X509_get_serialNumber(x509)))) |
| 542 | return 0; |
| 543 | |
| 544 | pkey = X509_get_pubkey(x509); |
| 545 | |
| 546 | if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) |
| 547 | { |
| 548 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
| 549 | PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| 550 | goto err; |
| 551 | } |
| 552 | |
| 553 | ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, |
| 554 | 0, p7i); |
| 555 | if (ret == -2) |
| 556 | { |
| 557 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
| 558 | PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| 559 | goto err; |
| 560 | } |
| 561 | if (ret <= 0) |
| 562 | { |
| 563 | PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET, |
| 564 | PKCS7_R_ENCRYPTION_CTRL_FAILURE); |
| 565 | goto err; |
| 566 | } |
| 567 | |
| 568 | EVP_PKEY_free(pkey); |
| 569 | |
| 570 | CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); |
| 571 | p7i->cert=x509; |
| 572 | |
| 573 | return 1; |
| 574 | |
| 575 | err: |
| 576 | if (pkey) |
| 577 | EVP_PKEY_free(pkey); |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si) |
| 582 | { |
| 583 | if (PKCS7_type_is_signed(p7)) |
| 584 | return(X509_find_by_issuer_and_serial(p7->d.sign->cert, |
| 585 | si->issuer_and_serial->issuer, |
| 586 | si->issuer_and_serial->serial)); |
| 587 | else |
| 588 | return(NULL); |
| 589 | } |
| 590 | |
| 591 | int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher) |
| 592 | { |
| 593 | int i; |
| 594 | PKCS7_ENC_CONTENT *ec; |
| 595 | |
| 596 | i=OBJ_obj2nid(p7->type); |
| 597 | switch (i) |
| 598 | { |
| 599 | case NID_pkcs7_signedAndEnveloped: |
| 600 | ec=p7->d.signed_and_enveloped->enc_data; |
| 601 | break; |
| 602 | case NID_pkcs7_enveloped: |
| 603 | ec=p7->d.enveloped->enc_data; |
| 604 | break; |
| 605 | default: |
| 606 | PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE); |
| 607 | return(0); |
| 608 | } |
| 609 | |
| 610 | /* Check cipher OID exists and has data in it*/ |
| 611 | i = EVP_CIPHER_type(cipher); |
| 612 | if(i == NID_undef) { |
| 613 | PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); |
| 614 | return(0); |
| 615 | } |
| 616 | |
| 617 | ec->cipher = cipher; |
| 618 | return 1; |
| 619 | } |
| 620 | |
| 621 | int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7) |
| 622 | { |
| 623 | ASN1_OCTET_STRING *os = NULL; |
| 624 | |
| 625 | switch (OBJ_obj2nid(p7->type)) |
| 626 | { |
| 627 | case NID_pkcs7_data: |
| 628 | os = p7->d.data; |
| 629 | break; |
| 630 | |
| 631 | case NID_pkcs7_signedAndEnveloped: |
| 632 | os = p7->d.signed_and_enveloped->enc_data->enc_data; |
| 633 | if (os == NULL) |
| 634 | { |
| 635 | os=M_ASN1_OCTET_STRING_new(); |
| 636 | p7->d.signed_and_enveloped->enc_data->enc_data=os; |
| 637 | } |
| 638 | break; |
| 639 | |
| 640 | case NID_pkcs7_enveloped: |
| 641 | os = p7->d.enveloped->enc_data->enc_data; |
| 642 | if (os == NULL) |
| 643 | { |
| 644 | os=M_ASN1_OCTET_STRING_new(); |
| 645 | p7->d.enveloped->enc_data->enc_data=os; |
| 646 | } |
| 647 | break; |
| 648 | |
| 649 | case NID_pkcs7_signed: |
| 650 | os=p7->d.sign->contents->d.data; |
| 651 | break; |
| 652 | |
| 653 | default: |
| 654 | os = NULL; |
| 655 | break; |
| 656 | } |
| 657 | |
| 658 | if (os == NULL) |
| 659 | return 0; |
| 660 | |
| 661 | os->flags |= ASN1_STRING_FLAG_NDEF; |
| 662 | *boundary = &os->data; |
| 663 | |
| 664 | return 1; |
| 665 | } |