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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /* | |
| 6 * PKCS7 creation. | |
| 7 */ | |
| 8 | |
| 9 #include "p7local.h" | |
| 10 | |
| 11 #include "cert.h" | |
| 12 #include "secasn1.h" | |
| 13 #include "secitem.h" | |
| 14 #include "secoid.h" | |
| 15 #include "pk11func.h" | |
| 16 #include "prtime.h" | |
| 17 #include "secerr.h" | |
| 18 #include "secder.h" | |
| 19 #include "secpkcs5.h" | |
| 20 | |
| 21 const int NSS_PBE_DEFAULT_ITERATION_COUNT = 2000; /* used in p12e.c too */ | |
| 22 | |
| 23 static SECStatus | |
| 24 sec_pkcs7_init_content_info (SEC_PKCS7ContentInfo *cinfo, PLArenaPool *poolp, | |
| 25 SECOidTag kind, PRBool detached) | |
| 26 { | |
| 27 void *thing; | |
| 28 int version; | |
| 29 SECItem *versionp; | |
| 30 SECStatus rv; | |
| 31 | |
| 32 PORT_Assert (cinfo != NULL && poolp != NULL); | |
| 33 if (cinfo == NULL || poolp == NULL) | |
| 34 return SECFailure; | |
| 35 | |
| 36 cinfo->contentTypeTag = SECOID_FindOIDByTag (kind); | |
| 37 PORT_Assert (cinfo->contentTypeTag | |
| 38 && cinfo->contentTypeTag->offset == kind); | |
| 39 | |
| 40 rv = SECITEM_CopyItem (poolp, &(cinfo->contentType), | |
| 41 &(cinfo->contentTypeTag->oid)); | |
| 42 if (rv != SECSuccess) | |
| 43 return rv; | |
| 44 | |
| 45 if (detached) | |
| 46 return SECSuccess; | |
| 47 | |
| 48 switch (kind) { | |
| 49 default: | |
| 50 case SEC_OID_PKCS7_DATA: | |
| 51 thing = PORT_ArenaZAlloc (poolp, sizeof(SECItem)); | |
| 52 cinfo->content.data = (SECItem*)thing; | |
| 53 versionp = NULL; | |
| 54 version = -1; | |
| 55 break; | |
| 56 case SEC_OID_PKCS7_DIGESTED_DATA: | |
| 57 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7DigestedData)); | |
| 58 cinfo->content.digestedData = (SEC_PKCS7DigestedData*)thing; | |
| 59 versionp = &(cinfo->content.digestedData->version); | |
| 60 version = SEC_PKCS7_DIGESTED_DATA_VERSION; | |
| 61 break; | |
| 62 case SEC_OID_PKCS7_ENCRYPTED_DATA: | |
| 63 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7EncryptedData)); | |
| 64 cinfo->content.encryptedData = (SEC_PKCS7EncryptedData*)thing; | |
| 65 versionp = &(cinfo->content.encryptedData->version); | |
| 66 version = SEC_PKCS7_ENCRYPTED_DATA_VERSION; | |
| 67 break; | |
| 68 case SEC_OID_PKCS7_ENVELOPED_DATA: | |
| 69 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7EnvelopedData)); | |
| 70 cinfo->content.envelopedData = | |
| 71 (SEC_PKCS7EnvelopedData*)thing; | |
| 72 versionp = &(cinfo->content.envelopedData->version); | |
| 73 version = SEC_PKCS7_ENVELOPED_DATA_VERSION; | |
| 74 break; | |
| 75 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 76 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7SignedData)); | |
| 77 cinfo->content.signedData = | |
| 78 (SEC_PKCS7SignedData*)thing; | |
| 79 versionp = &(cinfo->content.signedData->version); | |
| 80 version = SEC_PKCS7_SIGNED_DATA_VERSION; | |
| 81 break; | |
| 82 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 83 thing = PORT_ArenaZAlloc(poolp,sizeof(SEC_PKCS7SignedAndEnvelopedData)); | |
| 84 cinfo->content.signedAndEnvelopedData = | |
| 85 (SEC_PKCS7SignedAndEnvelopedData*)thing; | |
| 86 versionp = &(cinfo->content.signedAndEnvelopedData->version); | |
| 87 version = SEC_PKCS7_SIGNED_AND_ENVELOPED_DATA_VERSION; | |
| 88 break; | |
| 89 } | |
| 90 | |
| 91 if (thing == NULL) | |
| 92 return SECFailure; | |
| 93 | |
| 94 if (versionp != NULL) { | |
| 95 SECItem *dummy; | |
| 96 | |
| 97 PORT_Assert (version >= 0); | |
| 98 dummy = SEC_ASN1EncodeInteger (poolp, versionp, version); | |
| 99 if (dummy == NULL) | |
| 100 return SECFailure; | |
| 101 PORT_Assert (dummy == versionp); | |
| 102 } | |
| 103 | |
| 104 return SECSuccess; | |
| 105 } | |
| 106 | |
| 107 | |
| 108 static SEC_PKCS7ContentInfo * | |
| 109 sec_pkcs7_create_content_info (SECOidTag kind, PRBool detached, | |
| 110 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 111 { | |
| 112 SEC_PKCS7ContentInfo *cinfo; | |
| 113 PLArenaPool *poolp; | |
| 114 SECStatus rv; | |
| 115 | |
| 116 poolp = PORT_NewArena (1024); /* XXX what is right value? */ | |
| 117 if (poolp == NULL) | |
| 118 return NULL; | |
| 119 | |
| 120 cinfo = (SEC_PKCS7ContentInfo*)PORT_ArenaZAlloc (poolp, sizeof(*cinfo)); | |
| 121 if (cinfo == NULL) { | |
| 122 PORT_FreeArena (poolp, PR_FALSE); | |
| 123 return NULL; | |
| 124 } | |
| 125 | |
| 126 cinfo->poolp = poolp; | |
| 127 cinfo->pwfn = pwfn; | |
| 128 cinfo->pwfn_arg = pwfn_arg; | |
| 129 cinfo->created = PR_TRUE; | |
| 130 cinfo->refCount = 1; | |
| 131 | |
| 132 rv = sec_pkcs7_init_content_info (cinfo, poolp, kind, detached); | |
| 133 if (rv != SECSuccess) { | |
| 134 PORT_FreeArena (poolp, PR_FALSE); | |
| 135 return NULL; | |
| 136 } | |
| 137 | |
| 138 return cinfo; | |
| 139 } | |
| 140 | |
| 141 | |
| 142 /* | |
| 143 * Add a signer to a PKCS7 thing, verifying the signature cert first. | |
| 144 * Any error returns SECFailure. | |
| 145 * | |
| 146 * XXX Right now this only adds the *first* signer. It fails if you try | |
| 147 * to add a second one -- this needs to be fixed. | |
| 148 */ | |
| 149 static SECStatus | |
| 150 sec_pkcs7_add_signer (SEC_PKCS7ContentInfo *cinfo, | |
| 151 CERTCertificate * cert, | |
| 152 SECCertUsage certusage, | |
| 153 CERTCertDBHandle * certdb, | |
| 154 SECOidTag digestalgtag, | |
| 155 SECItem * digestdata) | |
| 156 { | |
| 157 SEC_PKCS7SignerInfo *signerinfo, **signerinfos, ***signerinfosp; | |
| 158 SECAlgorithmID *digestalg, **digestalgs, ***digestalgsp; | |
| 159 SECItem *digest, **digests, ***digestsp; | |
| 160 SECItem * dummy; | |
| 161 void * mark; | |
| 162 SECStatus rv; | |
| 163 SECOidTag kind; | |
| 164 | |
| 165 kind = SEC_PKCS7ContentType (cinfo); | |
| 166 switch (kind) { | |
| 167 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 168 { | |
| 169 SEC_PKCS7SignedData *sdp; | |
| 170 | |
| 171 sdp = cinfo->content.signedData; | |
| 172 digestalgsp = &(sdp->digestAlgorithms); | |
| 173 digestsp = &(sdp->digests); | |
| 174 signerinfosp = &(sdp->signerInfos); | |
| 175 } | |
| 176 break; | |
| 177 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 178 { | |
| 179 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 180 | |
| 181 saedp = cinfo->content.signedAndEnvelopedData; | |
| 182 digestalgsp = &(saedp->digestAlgorithms); | |
| 183 digestsp = &(saedp->digests); | |
| 184 signerinfosp = &(saedp->signerInfos); | |
| 185 } | |
| 186 break; | |
| 187 default: | |
| 188 return SECFailure; /* XXX set an error? */ | |
| 189 } | |
| 190 | |
| 191 /* | |
| 192 * XXX I think that CERT_VerifyCert should do this if *it* is passed | |
| 193 * a NULL database. | |
| 194 */ | |
| 195 if (certdb == NULL) { | |
| 196 certdb = CERT_GetDefaultCertDB(); | |
| 197 if (certdb == NULL) | |
| 198 return SECFailure; /* XXX set an error? */ | |
| 199 } | |
| 200 | |
| 201 if (CERT_VerifyCert (certdb, cert, PR_TRUE, certusage, PR_Now(), | |
| 202 cinfo->pwfn_arg, NULL) != SECSuccess) | |
| 203 { | |
| 204 /* XXX Did CERT_VerifyCert set an error? */ | |
| 205 return SECFailure; | |
| 206 } | |
| 207 | |
| 208 /* | |
| 209 * XXX This is the check that we do not already have a signer. | |
| 210 * This is not what we really want -- we want to allow this | |
| 211 * and *add* the new signer. | |
| 212 */ | |
| 213 PORT_Assert (*signerinfosp == NULL | |
| 214 && *digestalgsp == NULL && *digestsp == NULL); | |
| 215 if (*signerinfosp != NULL || *digestalgsp != NULL || *digestsp != NULL) | |
| 216 return SECFailure; | |
| 217 | |
| 218 mark = PORT_ArenaMark (cinfo->poolp); | |
| 219 | |
| 220 signerinfo = (SEC_PKCS7SignerInfo*)PORT_ArenaZAlloc (cinfo->poolp, | |
| 221 sizeof(SEC_PKCS7SignerInfo)); | |
| 222 if (signerinfo == NULL) { | |
| 223 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 224 return SECFailure; | |
| 225 } | |
| 226 | |
| 227 dummy = SEC_ASN1EncodeInteger (cinfo->poolp, &signerinfo->version, | |
| 228 SEC_PKCS7_SIGNER_INFO_VERSION); | |
| 229 if (dummy == NULL) { | |
| 230 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 231 return SECFailure; | |
| 232 } | |
| 233 PORT_Assert (dummy == &signerinfo->version); | |
| 234 | |
| 235 signerinfo->cert = CERT_DupCertificate (cert); | |
| 236 if (signerinfo->cert == NULL) { | |
| 237 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 238 return SECFailure; | |
| 239 } | |
| 240 | |
| 241 signerinfo->issuerAndSN = CERT_GetCertIssuerAndSN (cinfo->poolp, cert); | |
| 242 if (signerinfo->issuerAndSN == NULL) { | |
| 243 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 244 return SECFailure; | |
| 245 } | |
| 246 | |
| 247 rv = SECOID_SetAlgorithmID (cinfo->poolp, &signerinfo->digestAlg, | |
| 248 digestalgtag, NULL); | |
| 249 if (rv != SECSuccess) { | |
| 250 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 251 return SECFailure; | |
| 252 } | |
| 253 | |
| 254 /* | |
| 255 * Okay, now signerinfo is all set. We just need to put it and its | |
| 256 * companions (another copy of the digest algorithm, and the digest | |
| 257 * itself if given) into the main structure. | |
| 258 * | |
| 259 * XXX If we are handling more than one signer, the following code | |
| 260 * needs to look through the digest algorithms already specified | |
| 261 * and see if the same one is there already. If it is, it does not | |
| 262 * need to be added again. Also, if it is there *and* the digest | |
| 263 * is not null, then the digest given should match the digest already | |
| 264 * specified -- if not, that is an error. Finally, the new signerinfo | |
| 265 * should be *added* to the set already found. | |
| 266 */ | |
| 267 | |
| 268 signerinfos = (SEC_PKCS7SignerInfo**)PORT_ArenaAlloc (cinfo->poolp, | |
| 269 2 * sizeof(SEC_PKCS7SignerInfo *)); | |
| 270 if (signerinfos == NULL) { | |
| 271 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 272 return SECFailure; | |
| 273 } | |
| 274 signerinfos[0] = signerinfo; | |
| 275 signerinfos[1] = NULL; | |
| 276 | |
| 277 digestalg = PORT_ArenaZAlloc (cinfo->poolp, sizeof(SECAlgorithmID)); | |
| 278 digestalgs = PORT_ArenaAlloc (cinfo->poolp, 2 * sizeof(SECAlgorithmID *)); | |
| 279 if (digestalg == NULL || digestalgs == NULL) { | |
| 280 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 281 return SECFailure; | |
| 282 } | |
| 283 rv = SECOID_SetAlgorithmID (cinfo->poolp, digestalg, digestalgtag, NULL); | |
| 284 if (rv != SECSuccess) { | |
| 285 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 286 return SECFailure; | |
| 287 } | |
| 288 digestalgs[0] = digestalg; | |
| 289 digestalgs[1] = NULL; | |
| 290 | |
| 291 if (digestdata != NULL) { | |
| 292 digest = (SECItem*)PORT_ArenaAlloc (cinfo->poolp, sizeof(SECItem)); | |
| 293 digests = (SECItem**)PORT_ArenaAlloc (cinfo->poolp, | |
| 294 2 * sizeof(SECItem *)); | |
| 295 if (digest == NULL || digests == NULL) { | |
| 296 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 297 return SECFailure; | |
| 298 } | |
| 299 rv = SECITEM_CopyItem (cinfo->poolp, digest, digestdata); | |
| 300 if (rv != SECSuccess) { | |
| 301 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 302 return SECFailure; | |
| 303 } | |
| 304 digests[0] = digest; | |
| 305 digests[1] = NULL; | |
| 306 } else { | |
| 307 digests = NULL; | |
| 308 } | |
| 309 | |
| 310 *signerinfosp = signerinfos; | |
| 311 *digestalgsp = digestalgs; | |
| 312 *digestsp = digests; | |
| 313 | |
| 314 PORT_ArenaUnmark(cinfo->poolp, mark); | |
| 315 return SECSuccess; | |
| 316 } | |
| 317 | |
| 318 | |
| 319 /* | |
| 320 * Helper function for creating an empty signedData. | |
| 321 */ | |
| 322 static SEC_PKCS7ContentInfo * | |
| 323 sec_pkcs7_create_signed_data (SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 324 { | |
| 325 SEC_PKCS7ContentInfo *cinfo; | |
| 326 SEC_PKCS7SignedData *sigd; | |
| 327 SECStatus rv; | |
| 328 | |
| 329 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_SIGNED_DATA, PR_FALSE, | |
| 330 pwfn, pwfn_arg); | |
| 331 if (cinfo == NULL) | |
| 332 return NULL; | |
| 333 | |
| 334 sigd = cinfo->content.signedData; | |
| 335 PORT_Assert (sigd != NULL); | |
| 336 | |
| 337 /* | |
| 338 * XXX Might we want to allow content types other than data? | |
| 339 * If so, via what interface? | |
| 340 */ | |
| 341 rv = sec_pkcs7_init_content_info (&(sigd->contentInfo), cinfo->poolp, | |
| 342 SEC_OID_PKCS7_DATA, PR_TRUE); | |
| 343 if (rv != SECSuccess) { | |
| 344 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 345 return NULL; | |
| 346 } | |
| 347 | |
| 348 return cinfo; | |
| 349 } | |
| 350 | |
| 351 | |
| 352 /* | |
| 353 * Start a PKCS7 signing context. | |
| 354 * | |
| 355 * "cert" is the cert that will be used to sign the data. It will be | |
| 356 * checked for validity. | |
| 357 * | |
| 358 * "certusage" describes the signing usage (e.g. certUsageEmailSigner) | |
| 359 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 360 * "email" and *we* add the "signing" part -- otherwise our caller | |
| 361 * could be lying about the usage; we do not want to allow encryption | |
| 362 * certs for signing or vice versa. | |
| 363 * | |
| 364 * "certdb" is the cert database to use for verifying the cert. | |
| 365 * It can be NULL if a default database is available (like in the client). | |
| 366 * | |
| 367 * "digestalg" names the digest algorithm (e.g. SEC_OID_SHA1). | |
| 368 * | |
| 369 * "digest" is the actual digest of the data. It must be provided in | |
| 370 * the case of detached data or NULL if the content will be included. | |
| 371 * | |
| 372 * The return value can be passed to functions which add things to | |
| 373 * it like attributes, then eventually to SEC_PKCS7Encode() or to | |
| 374 * SEC_PKCS7EncoderStart() to create the encoded data, and finally to | |
| 375 * SEC_PKCS7DestroyContentInfo(). | |
| 376 * | |
| 377 * An error results in a return value of NULL and an error set. | |
| 378 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 379 */ | |
| 380 SEC_PKCS7ContentInfo * | |
| 381 SEC_PKCS7CreateSignedData (CERTCertificate *cert, | |
| 382 SECCertUsage certusage, | |
| 383 CERTCertDBHandle *certdb, | |
| 384 SECOidTag digestalg, | |
| 385 SECItem *digest, | |
| 386 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 387 { | |
| 388 SEC_PKCS7ContentInfo *cinfo; | |
| 389 SECStatus rv; | |
| 390 | |
| 391 cinfo = sec_pkcs7_create_signed_data (pwfn, pwfn_arg); | |
| 392 if (cinfo == NULL) | |
| 393 return NULL; | |
| 394 | |
| 395 rv = sec_pkcs7_add_signer (cinfo, cert, certusage, certdb, | |
| 396 digestalg, digest); | |
| 397 if (rv != SECSuccess) { | |
| 398 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 399 return NULL; | |
| 400 } | |
| 401 | |
| 402 return cinfo; | |
| 403 } | |
| 404 | |
| 405 | |
| 406 static SEC_PKCS7Attribute * | |
| 407 sec_pkcs7_create_attribute (PLArenaPool *poolp, SECOidTag oidtag, | |
| 408 SECItem *value, PRBool encoded) | |
| 409 { | |
| 410 SEC_PKCS7Attribute *attr; | |
| 411 SECItem **values; | |
| 412 void *mark; | |
| 413 | |
| 414 PORT_Assert (poolp != NULL); | |
| 415 mark = PORT_ArenaMark (poolp); | |
| 416 | |
| 417 attr = (SEC_PKCS7Attribute*)PORT_ArenaAlloc (poolp, | |
| 418 sizeof(SEC_PKCS7Attribute)); | |
| 419 if (attr == NULL) | |
| 420 goto loser; | |
| 421 | |
| 422 attr->typeTag = SECOID_FindOIDByTag (oidtag); | |
| 423 if (attr->typeTag == NULL) | |
| 424 goto loser; | |
| 425 | |
| 426 if (SECITEM_CopyItem (poolp, &(attr->type), | |
| 427 &(attr->typeTag->oid)) != SECSuccess) | |
| 428 goto loser; | |
| 429 | |
| 430 values = (SECItem**)PORT_ArenaAlloc (poolp, 2 * sizeof(SECItem *)); | |
| 431 if (values == NULL) | |
| 432 goto loser; | |
| 433 | |
| 434 if (value != NULL) { | |
| 435 SECItem *copy; | |
| 436 | |
| 437 copy = (SECItem*)PORT_ArenaAlloc (poolp, sizeof(SECItem)); | |
| 438 if (copy == NULL) | |
| 439 goto loser; | |
| 440 | |
| 441 if (SECITEM_CopyItem (poolp, copy, value) != SECSuccess) | |
| 442 goto loser; | |
| 443 | |
| 444 value = copy; | |
| 445 } | |
| 446 | |
| 447 values[0] = value; | |
| 448 values[1] = NULL; | |
| 449 attr->values = values; | |
| 450 attr->encoded = encoded; | |
| 451 | |
| 452 PORT_ArenaUnmark (poolp, mark); | |
| 453 return attr; | |
| 454 | |
| 455 loser: | |
| 456 PORT_Assert (mark != NULL); | |
| 457 PORT_ArenaRelease (poolp, mark); | |
| 458 return NULL; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 static SECStatus | |
| 463 sec_pkcs7_add_attribute (SEC_PKCS7ContentInfo *cinfo, | |
| 464 SEC_PKCS7Attribute ***attrsp, | |
| 465 SEC_PKCS7Attribute *attr) | |
| 466 { | |
| 467 SEC_PKCS7Attribute **attrs; | |
| 468 SECItem *ct_value; | |
| 469 void *mark; | |
| 470 | |
| 471 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 472 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 473 return SECFailure; | |
| 474 | |
| 475 attrs = *attrsp; | |
| 476 if (attrs != NULL) { | |
| 477 int count; | |
| 478 | |
| 479 /* | |
| 480 * We already have some attributes, and just need to add this | |
| 481 * new one. | |
| 482 */ | |
| 483 | |
| 484 /* | |
| 485 * We should already have the *required* attributes, which were | |
| 486 * created/added at the same time the first attribute was added. | |
| 487 */ | |
| 488 PORT_Assert (sec_PKCS7FindAttribute (attrs, | |
| 489 SEC_OID_PKCS9_CONTENT_TYPE, | |
| 490 PR_FALSE) != NULL); | |
| 491 PORT_Assert (sec_PKCS7FindAttribute (attrs, | |
| 492 SEC_OID_PKCS9_MESSAGE_DIGEST, | |
| 493 PR_FALSE) != NULL); | |
| 494 | |
| 495 for (count = 0; attrs[count] != NULL; count++) | |
| 496 ; | |
| 497 attrs = (SEC_PKCS7Attribute**)PORT_ArenaGrow (cinfo->poolp, attrs, | |
| 498 (count + 1) * sizeof(SEC_PKCS7Attribute *), | |
| 499 (count + 2) * sizeof(SEC_PKCS7Attribute *)); | |
| 500 if (attrs == NULL) | |
| 501 return SECFailure; | |
| 502 | |
| 503 attrs[count] = attr; | |
| 504 attrs[count+1] = NULL; | |
| 505 *attrsp = attrs; | |
| 506 | |
| 507 return SECSuccess; | |
| 508 } | |
| 509 | |
| 510 /* | |
| 511 * This is the first time an attribute is going in. | |
| 512 * We need to create and add the required attributes, and then | |
| 513 * we will also add in the one our caller gave us. | |
| 514 */ | |
| 515 | |
| 516 /* | |
| 517 * There are 2 required attributes, plus the one our caller wants | |
| 518 * to add, plus we always end with a NULL one. Thus, four slots. | |
| 519 */ | |
| 520 attrs = (SEC_PKCS7Attribute**)PORT_ArenaAlloc (cinfo->poolp, | |
| 521 4 * sizeof(SEC_PKCS7Attribute *)); | |
| 522 if (attrs == NULL) | |
| 523 return SECFailure; | |
| 524 | |
| 525 mark = PORT_ArenaMark (cinfo->poolp); | |
| 526 | |
| 527 /* | |
| 528 * First required attribute is the content type of the data | |
| 529 * being signed. | |
| 530 */ | |
| 531 ct_value = &(cinfo->content.signedData->contentInfo.contentType); | |
| 532 attrs[0] = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 533 SEC_OID_PKCS9_CONTENT_TYPE, | |
| 534 ct_value, PR_FALSE); | |
| 535 /* | |
| 536 * Second required attribute is the message digest of the data | |
| 537 * being signed; we leave the value NULL for now (just create | |
| 538 * the place for it to go), and the encoder will fill it in later. | |
| 539 */ | |
| 540 attrs[1] = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 541 SEC_OID_PKCS9_MESSAGE_DIGEST, | |
| 542 NULL, PR_FALSE); | |
| 543 if (attrs[0] == NULL || attrs[1] == NULL) { | |
| 544 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 545 return SECFailure; | |
| 546 } | |
| 547 | |
| 548 attrs[2] = attr; | |
| 549 attrs[3] = NULL; | |
| 550 *attrsp = attrs; | |
| 551 | |
| 552 PORT_ArenaUnmark (cinfo->poolp, mark); | |
| 553 return SECSuccess; | |
| 554 } | |
| 555 | |
| 556 | |
| 557 /* | |
| 558 * Add the signing time to the authenticated (i.e. signed) attributes | |
| 559 * of "cinfo". This is expected to be included in outgoing signed | |
| 560 * messages for email (S/MIME) but is likely useful in other situations. | |
| 561 * | |
| 562 * This should only be added once; a second call will either do | |
| 563 * nothing or replace an old signing time with a newer one. | |
| 564 * | |
| 565 * XXX This will probably just shove the current time into "cinfo" | |
| 566 * but it will not actually get signed until the entire item is | |
| 567 * processed for encoding. Is this (expected to be small) delay okay? | |
| 568 * | |
| 569 * "cinfo" should be of type signedData (the only kind of pkcs7 data | |
| 570 * that is allowed authenticated attributes); SECFailure will be returned | |
| 571 * if it is not. | |
| 572 */ | |
| 573 SECStatus | |
| 574 SEC_PKCS7AddSigningTime (SEC_PKCS7ContentInfo *cinfo) | |
| 575 { | |
| 576 SEC_PKCS7SignerInfo **signerinfos; | |
| 577 SEC_PKCS7Attribute *attr; | |
| 578 SECItem stime; | |
| 579 SECStatus rv; | |
| 580 int si; | |
| 581 | |
| 582 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 583 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 584 return SECFailure; | |
| 585 | |
| 586 signerinfos = cinfo->content.signedData->signerInfos; | |
| 587 | |
| 588 /* There has to be a signer, or it makes no sense. */ | |
| 589 if (signerinfos == NULL || signerinfos[0] == NULL) | |
| 590 return SECFailure; | |
| 591 | |
| 592 rv = DER_EncodeTimeChoice(NULL, &stime, PR_Now()); | |
| 593 if (rv != SECSuccess) | |
| 594 return rv; | |
| 595 | |
| 596 attr = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 597 SEC_OID_PKCS9_SIGNING_TIME, | |
| 598 &stime, PR_FALSE); | |
| 599 SECITEM_FreeItem (&stime, PR_FALSE); | |
| 600 | |
| 601 if (attr == NULL) | |
| 602 return SECFailure; | |
| 603 | |
| 604 rv = SECSuccess; | |
| 605 for (si = 0; signerinfos[si] != NULL; si++) { | |
| 606 SEC_PKCS7Attribute *oattr; | |
| 607 | |
| 608 oattr = sec_PKCS7FindAttribute (signerinfos[si]->authAttr, | |
| 609 SEC_OID_PKCS9_SIGNING_TIME, PR_FALSE); | |
| 610 PORT_Assert (oattr == NULL); | |
| 611 if (oattr != NULL) | |
| 612 continue; /* XXX or would it be better to replace it? */ | |
| 613 | |
| 614 rv = sec_pkcs7_add_attribute (cinfo, &(signerinfos[si]->authAttr), | |
| 615 attr); | |
| 616 if (rv != SECSuccess) | |
| 617 break; /* could try to continue, but may as well give up now */ | |
| 618 } | |
| 619 | |
| 620 return rv; | |
| 621 } | |
| 622 | |
| 623 | |
| 624 /* | |
| 625 * Add the specified attribute to the authenticated (i.e. signed) attributes | |
| 626 * of "cinfo" -- "oidtag" describes the attribute and "value" is the | |
| 627 * value to be associated with it. NOTE! "value" must already be encoded; | |
| 628 * no interpretation of "oidtag" is done. Also, it is assumed that this | |
| 629 * signedData has only one signer -- if we ever need to add attributes | |
| 630 * when there is more than one signature, we need a way to specify *which* | |
| 631 * signature should get the attribute. | |
| 632 * | |
| 633 * XXX Technically, a signed attribute can have multiple values; if/when | |
| 634 * we ever need to support an attribute which takes multiple values, we | |
| 635 * either need to change this interface or create an AddSignedAttributeValue | |
| 636 * which can be called subsequently, and would then append a value. | |
| 637 * | |
| 638 * "cinfo" should be of type signedData (the only kind of pkcs7 data | |
| 639 * that is allowed authenticated attributes); SECFailure will be returned | |
| 640 * if it is not. | |
| 641 */ | |
| 642 SECStatus | |
| 643 SEC_PKCS7AddSignedAttribute (SEC_PKCS7ContentInfo *cinfo, | |
| 644 SECOidTag oidtag, | |
| 645 SECItem *value) | |
| 646 { | |
| 647 SEC_PKCS7SignerInfo **signerinfos; | |
| 648 SEC_PKCS7Attribute *attr; | |
| 649 | |
| 650 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 651 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 652 return SECFailure; | |
| 653 | |
| 654 signerinfos = cinfo->content.signedData->signerInfos; | |
| 655 | |
| 656 /* | |
| 657 * No signature or more than one means no deal. | |
| 658 */ | |
| 659 if (signerinfos == NULL || signerinfos[0] == NULL || signerinfos[1] != NULL) | |
| 660 return SECFailure; | |
| 661 | |
| 662 attr = sec_pkcs7_create_attribute (cinfo->poolp, oidtag, value, PR_TRUE); | |
| 663 if (attr == NULL) | |
| 664 return SECFailure; | |
| 665 | |
| 666 return sec_pkcs7_add_attribute (cinfo, &(signerinfos[0]->authAttr), attr); | |
| 667 } | |
| 668 | |
| 669 | |
| 670 /* | |
| 671 * Mark that the signer certificates and their issuing chain should | |
| 672 * be included in the encoded data. This is expected to be used | |
| 673 * in outgoing signed messages for email (S/MIME). | |
| 674 * | |
| 675 * "certdb" is the cert database to use for finding the chain. | |
| 676 * It can be NULL, meaning use the default database. | |
| 677 * | |
| 678 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 679 * SECFailure will be returned if it is not. | |
| 680 */ | |
| 681 SECStatus | |
| 682 SEC_PKCS7IncludeCertChain (SEC_PKCS7ContentInfo *cinfo, | |
| 683 CERTCertDBHandle *certdb) | |
| 684 { | |
| 685 SECOidTag kind; | |
| 686 SEC_PKCS7SignerInfo *signerinfo, **signerinfos; | |
| 687 | |
| 688 kind = SEC_PKCS7ContentType (cinfo); | |
| 689 switch (kind) { | |
| 690 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 691 signerinfos = cinfo->content.signedData->signerInfos; | |
| 692 break; | |
| 693 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 694 signerinfos = cinfo->content.signedAndEnvelopedData->signerInfos; | |
| 695 break; | |
| 696 default: | |
| 697 return SECFailure; /* XXX set an error? */ | |
| 698 } | |
| 699 | |
| 700 if (signerinfos == NULL) /* no signer, no certs? */ | |
| 701 return SECFailure; /* XXX set an error? */ | |
| 702 | |
| 703 if (certdb == NULL) { | |
| 704 certdb = CERT_GetDefaultCertDB(); | |
| 705 if (certdb == NULL) { | |
| 706 PORT_SetError (SEC_ERROR_BAD_DATABASE); | |
| 707 return SECFailure; | |
| 708 } | |
| 709 } | |
| 710 | |
| 711 /* XXX Should it be an error if we find no signerinfo or no certs? */ | |
| 712 while ((signerinfo = *signerinfos++) != NULL) { | |
| 713 if (signerinfo->cert != NULL) | |
| 714 /* get the cert chain. don't send the root to avoid contamination | |
| 715 * of old clients with a new root that they don't trust | |
| 716 */ | |
| 717 signerinfo->certList = CERT_CertChainFromCert (signerinfo->cert, | |
| 718 certUsageEmailSigner, | |
| 719 PR_FALSE); | |
| 720 } | |
| 721 | |
| 722 return SECSuccess; | |
| 723 } | |
| 724 | |
| 725 | |
| 726 /* | |
| 727 * Helper function to add a certificate chain for inclusion in the | |
| 728 * bag of certificates in a signedData. | |
| 729 */ | |
| 730 static SECStatus | |
| 731 sec_pkcs7_add_cert_chain (SEC_PKCS7ContentInfo *cinfo, | |
| 732 CERTCertificate *cert, | |
| 733 CERTCertDBHandle *certdb) | |
| 734 { | |
| 735 SECOidTag kind; | |
| 736 CERTCertificateList *certlist, **certlists, ***certlistsp; | |
| 737 int count; | |
| 738 | |
| 739 kind = SEC_PKCS7ContentType (cinfo); | |
| 740 switch (kind) { | |
| 741 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 742 { | |
| 743 SEC_PKCS7SignedData *sdp; | |
| 744 | |
| 745 sdp = cinfo->content.signedData; | |
| 746 certlistsp = &(sdp->certLists); | |
| 747 } | |
| 748 break; | |
| 749 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 750 { | |
| 751 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 752 | |
| 753 saedp = cinfo->content.signedAndEnvelopedData; | |
| 754 certlistsp = &(saedp->certLists); | |
| 755 } | |
| 756 break; | |
| 757 default: | |
| 758 return SECFailure; /* XXX set an error? */ | |
| 759 } | |
| 760 | |
| 761 if (certdb == NULL) { | |
| 762 certdb = CERT_GetDefaultCertDB(); | |
| 763 if (certdb == NULL) { | |
| 764 PORT_SetError (SEC_ERROR_BAD_DATABASE); | |
| 765 return SECFailure; | |
| 766 } | |
| 767 } | |
| 768 | |
| 769 certlist = CERT_CertChainFromCert (cert, certUsageEmailSigner, PR_FALSE); | |
| 770 if (certlist == NULL) | |
| 771 return SECFailure; | |
| 772 | |
| 773 certlists = *certlistsp; | |
| 774 if (certlists == NULL) { | |
| 775 count = 0; | |
| 776 certlists = (CERTCertificateList**)PORT_ArenaAlloc (cinfo->poolp, | |
| 777 2 * sizeof(CERTCertificateList *)); | |
| 778 } else { | |
| 779 for (count = 0; certlists[count] != NULL; count++) | |
| 780 ; | |
| 781 PORT_Assert (count); /* should be at least one already */ | |
| 782 certlists = (CERTCertificateList**)PORT_ArenaGrow (cinfo->poolp, | |
| 783 certlists, | |
| 784 (count + 1) * sizeof(CERTCertificateList *), | |
| 785 (count + 2) * sizeof(CERTCertificateList *)); | |
| 786 } | |
| 787 | |
| 788 if (certlists == NULL) { | |
| 789 CERT_DestroyCertificateList (certlist); | |
| 790 return SECFailure; | |
| 791 } | |
| 792 | |
| 793 certlists[count] = certlist; | |
| 794 certlists[count + 1] = NULL; | |
| 795 | |
| 796 *certlistsp = certlists; | |
| 797 | |
| 798 return SECSuccess; | |
| 799 } | |
| 800 | |
| 801 | |
| 802 /* | |
| 803 * Helper function to add a certificate for inclusion in the bag of | |
| 804 * certificates in a signedData. | |
| 805 */ | |
| 806 static SECStatus | |
| 807 sec_pkcs7_add_certificate (SEC_PKCS7ContentInfo *cinfo, | |
| 808 CERTCertificate *cert) | |
| 809 { | |
| 810 SECOidTag kind; | |
| 811 CERTCertificate **certs, ***certsp; | |
| 812 int count; | |
| 813 | |
| 814 kind = SEC_PKCS7ContentType (cinfo); | |
| 815 switch (kind) { | |
| 816 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 817 { | |
| 818 SEC_PKCS7SignedData *sdp; | |
| 819 | |
| 820 sdp = cinfo->content.signedData; | |
| 821 certsp = &(sdp->certs); | |
| 822 } | |
| 823 break; | |
| 824 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 825 { | |
| 826 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 827 | |
| 828 saedp = cinfo->content.signedAndEnvelopedData; | |
| 829 certsp = &(saedp->certs); | |
| 830 } | |
| 831 break; | |
| 832 default: | |
| 833 return SECFailure; /* XXX set an error? */ | |
| 834 } | |
| 835 | |
| 836 cert = CERT_DupCertificate (cert); | |
| 837 if (cert == NULL) | |
| 838 return SECFailure; | |
| 839 | |
| 840 certs = *certsp; | |
| 841 if (certs == NULL) { | |
| 842 count = 0; | |
| 843 certs = (CERTCertificate**)PORT_ArenaAlloc (cinfo->poolp, | |
| 844 2 * sizeof(CERTCertificate *)); | |
| 845 } else { | |
| 846 for (count = 0; certs[count] != NULL; count++) | |
| 847 ; | |
| 848 PORT_Assert (count); /* should be at least one already */ | |
| 849 certs = (CERTCertificate**)PORT_ArenaGrow (cinfo->poolp, certs, | |
| 850 (count + 1) * sizeof(CERTCertificate *), | |
| 851 (count + 2) * sizeof(CERTCertificate *)); | |
| 852 } | |
| 853 | |
| 854 if (certs == NULL) { | |
| 855 CERT_DestroyCertificate (cert); | |
| 856 return SECFailure; | |
| 857 } | |
| 858 | |
| 859 certs[count] = cert; | |
| 860 certs[count + 1] = NULL; | |
| 861 | |
| 862 *certsp = certs; | |
| 863 | |
| 864 return SECSuccess; | |
| 865 } | |
| 866 | |
| 867 | |
| 868 /* | |
| 869 * Create a PKCS7 certs-only container. | |
| 870 * | |
| 871 * "cert" is the (first) cert that will be included. | |
| 872 * | |
| 873 * "include_chain" specifies whether the entire chain for "cert" should | |
| 874 * be included. | |
| 875 * | |
| 876 * "certdb" is the cert database to use for finding the chain. | |
| 877 * It can be NULL in when "include_chain" is false, or when meaning | |
| 878 * use the default database. | |
| 879 * | |
| 880 * More certs and chains can be added via AddCertificate and AddCertChain. | |
| 881 * | |
| 882 * An error results in a return value of NULL and an error set. | |
| 883 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 884 */ | |
| 885 SEC_PKCS7ContentInfo * | |
| 886 SEC_PKCS7CreateCertsOnly (CERTCertificate *cert, | |
| 887 PRBool include_chain, | |
| 888 CERTCertDBHandle *certdb) | |
| 889 { | |
| 890 SEC_PKCS7ContentInfo *cinfo; | |
| 891 SECStatus rv; | |
| 892 | |
| 893 cinfo = sec_pkcs7_create_signed_data (NULL, NULL); | |
| 894 if (cinfo == NULL) | |
| 895 return NULL; | |
| 896 | |
| 897 if (include_chain) | |
| 898 rv = sec_pkcs7_add_cert_chain (cinfo, cert, certdb); | |
| 899 else | |
| 900 rv = sec_pkcs7_add_certificate (cinfo, cert); | |
| 901 | |
| 902 if (rv != SECSuccess) { | |
| 903 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 904 return NULL; | |
| 905 } | |
| 906 | |
| 907 return cinfo; | |
| 908 } | |
| 909 | |
| 910 | |
| 911 /* | |
| 912 * Add "cert" and its entire chain to the set of certs included in "cinfo". | |
| 913 * | |
| 914 * "certdb" is the cert database to use for finding the chain. | |
| 915 * It can be NULL, meaning use the default database. | |
| 916 * | |
| 917 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 918 * SECFailure will be returned if it is not. | |
| 919 */ | |
| 920 SECStatus | |
| 921 SEC_PKCS7AddCertChain (SEC_PKCS7ContentInfo *cinfo, | |
| 922 CERTCertificate *cert, | |
| 923 CERTCertDBHandle *certdb) | |
| 924 { | |
| 925 SECOidTag kind; | |
| 926 | |
| 927 kind = SEC_PKCS7ContentType (cinfo); | |
| 928 if (kind != SEC_OID_PKCS7_SIGNED_DATA | |
| 929 && kind != SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA) | |
| 930 return SECFailure; /* XXX set an error? */ | |
| 931 | |
| 932 return sec_pkcs7_add_cert_chain (cinfo, cert, certdb); | |
| 933 } | |
| 934 | |
| 935 | |
| 936 /* | |
| 937 * Add "cert" to the set of certs included in "cinfo". | |
| 938 * | |
| 939 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 940 * SECFailure will be returned if it is not. | |
| 941 */ | |
| 942 SECStatus | |
| 943 SEC_PKCS7AddCertificate (SEC_PKCS7ContentInfo *cinfo, CERTCertificate *cert) | |
| 944 { | |
| 945 SECOidTag kind; | |
| 946 | |
| 947 kind = SEC_PKCS7ContentType (cinfo); | |
| 948 if (kind != SEC_OID_PKCS7_SIGNED_DATA | |
| 949 && kind != SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA) | |
| 950 return SECFailure; /* XXX set an error? */ | |
| 951 | |
| 952 return sec_pkcs7_add_certificate (cinfo, cert); | |
| 953 } | |
| 954 | |
| 955 | |
| 956 static SECStatus | |
| 957 sec_pkcs7_init_encrypted_content_info (SEC_PKCS7EncryptedContentInfo *enccinfo, | |
| 958 PLArenaPool *poolp, | |
| 959 SECOidTag kind, PRBool detached, | |
| 960 SECOidTag encalg, int keysize) | |
| 961 { | |
| 962 SECStatus rv; | |
| 963 | |
| 964 PORT_Assert (enccinfo != NULL && poolp != NULL); | |
| 965 if (enccinfo == NULL || poolp == NULL) | |
| 966 return SECFailure; | |
| 967 | |
| 968 /* | |
| 969 * XXX Some day we may want to allow for other kinds. That needs | |
| 970 * more work and modifications to the creation interface, etc. | |
| 971 * For now, allow but notice callers who pass in other kinds. | |
| 972 * They are responsible for creating the inner type and encoding, | |
| 973 * if it is other than DATA. | |
| 974 */ | |
| 975 PORT_Assert (kind == SEC_OID_PKCS7_DATA); | |
| 976 | |
| 977 enccinfo->contentTypeTag = SECOID_FindOIDByTag (kind); | |
| 978 PORT_Assert (enccinfo->contentTypeTag | |
| 979 && enccinfo->contentTypeTag->offset == kind); | |
| 980 | |
| 981 rv = SECITEM_CopyItem (poolp, &(enccinfo->contentType), | |
| 982 &(enccinfo->contentTypeTag->oid)); | |
| 983 if (rv != SECSuccess) | |
| 984 return rv; | |
| 985 | |
| 986 /* Save keysize and algorithm for later. */ | |
| 987 enccinfo->keysize = keysize; | |
| 988 enccinfo->encalg = encalg; | |
| 989 | |
| 990 return SECSuccess; | |
| 991 } | |
| 992 | |
| 993 | |
| 994 /* | |
| 995 * Add a recipient to a PKCS7 thing, verifying their cert first. | |
| 996 * Any error returns SECFailure. | |
| 997 */ | |
| 998 static SECStatus | |
| 999 sec_pkcs7_add_recipient (SEC_PKCS7ContentInfo *cinfo, | |
| 1000 CERTCertificate *cert, | |
| 1001 SECCertUsage certusage, | |
| 1002 CERTCertDBHandle *certdb) | |
| 1003 { | |
| 1004 SECOidTag kind; | |
| 1005 SEC_PKCS7RecipientInfo *recipientinfo, **recipientinfos, ***recipientinfosp; | |
| 1006 SECItem *dummy; | |
| 1007 void *mark; | |
| 1008 int count; | |
| 1009 | |
| 1010 kind = SEC_PKCS7ContentType (cinfo); | |
| 1011 switch (kind) { | |
| 1012 case SEC_OID_PKCS7_ENVELOPED_DATA: | |
| 1013 { | |
| 1014 SEC_PKCS7EnvelopedData *edp; | |
| 1015 | |
| 1016 edp = cinfo->content.envelopedData; | |
| 1017 recipientinfosp = &(edp->recipientInfos); | |
| 1018 } | |
| 1019 break; | |
| 1020 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 1021 { | |
| 1022 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 1023 | |
| 1024 saedp = cinfo->content.signedAndEnvelopedData; | |
| 1025 recipientinfosp = &(saedp->recipientInfos); | |
| 1026 } | |
| 1027 break; | |
| 1028 default: | |
| 1029 return SECFailure; /* XXX set an error? */ | |
| 1030 } | |
| 1031 | |
| 1032 /* | |
| 1033 * XXX I think that CERT_VerifyCert should do this if *it* is passed | |
| 1034 * a NULL database. | |
| 1035 */ | |
| 1036 if (certdb == NULL) { | |
| 1037 certdb = CERT_GetDefaultCertDB(); | |
| 1038 if (certdb == NULL) | |
| 1039 return SECFailure; /* XXX set an error? */ | |
| 1040 } | |
| 1041 | |
| 1042 if (CERT_VerifyCert (certdb, cert, PR_TRUE, certusage, PR_Now(), | |
| 1043 cinfo->pwfn_arg, NULL) != SECSuccess) | |
| 1044 { | |
| 1045 /* XXX Did CERT_VerifyCert set an error? */ | |
| 1046 return SECFailure; | |
| 1047 } | |
| 1048 | |
| 1049 mark = PORT_ArenaMark (cinfo->poolp); | |
| 1050 | |
| 1051 recipientinfo = (SEC_PKCS7RecipientInfo*)PORT_ArenaZAlloc (cinfo->poolp, | |
| 1052 sizeof(SEC_PKCS7RecipientInfo)); | |
| 1053 if (recipientinfo == NULL) { | |
| 1054 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1055 return SECFailure; | |
| 1056 } | |
| 1057 | |
| 1058 dummy = SEC_ASN1EncodeInteger (cinfo->poolp, &recipientinfo->version, | |
| 1059 SEC_PKCS7_RECIPIENT_INFO_VERSION); | |
| 1060 if (dummy == NULL) { | |
| 1061 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1062 return SECFailure; | |
| 1063 } | |
| 1064 PORT_Assert (dummy == &recipientinfo->version); | |
| 1065 | |
| 1066 recipientinfo->cert = CERT_DupCertificate (cert); | |
| 1067 if (recipientinfo->cert == NULL) { | |
| 1068 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1069 return SECFailure; | |
| 1070 } | |
| 1071 | |
| 1072 recipientinfo->issuerAndSN = CERT_GetCertIssuerAndSN (cinfo->poolp, cert); | |
| 1073 if (recipientinfo->issuerAndSN == NULL) { | |
| 1074 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1075 return SECFailure; | |
| 1076 } | |
| 1077 | |
| 1078 /* | |
| 1079 * Okay, now recipientinfo is all set. We just need to put it into | |
| 1080 * the main structure. | |
| 1081 * | |
| 1082 * If this is the first recipient, allocate a new recipientinfos array; | |
| 1083 * otherwise, reallocate the array, making room for the new entry. | |
| 1084 */ | |
| 1085 recipientinfos = *recipientinfosp; | |
| 1086 if (recipientinfos == NULL) { | |
| 1087 count = 0; | |
| 1088 recipientinfos = (SEC_PKCS7RecipientInfo **)PORT_ArenaAlloc ( | |
| 1089 cinfo->poolp, | |
| 1090 2 * sizeof(SEC_PKCS7RecipientInfo *)); | |
| 1091 } else { | |
| 1092 for (count = 0; recipientinfos[count] != NULL; count++) | |
| 1093 ; | |
| 1094 PORT_Assert (count); /* should be at least one already */ | |
| 1095 recipientinfos = (SEC_PKCS7RecipientInfo **)PORT_ArenaGrow ( | |
| 1096 cinfo->poolp, recipientinfos, | |
| 1097 (count + 1) * sizeof(SEC_PKCS7RecipientInfo *), | |
| 1098 (count + 2) * sizeof(SEC_PKCS7RecipientInfo *)); | |
| 1099 } | |
| 1100 | |
| 1101 if (recipientinfos == NULL) { | |
| 1102 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1103 return SECFailure; | |
| 1104 } | |
| 1105 | |
| 1106 recipientinfos[count] = recipientinfo; | |
| 1107 recipientinfos[count + 1] = NULL; | |
| 1108 | |
| 1109 *recipientinfosp = recipientinfos; | |
| 1110 | |
| 1111 PORT_ArenaUnmark (cinfo->poolp, mark); | |
| 1112 return SECSuccess; | |
| 1113 } | |
| 1114 | |
| 1115 | |
| 1116 /* | |
| 1117 * Start a PKCS7 enveloping context. | |
| 1118 * | |
| 1119 * "cert" is the cert for the recipient. It will be checked for validity. | |
| 1120 * | |
| 1121 * "certusage" describes the encryption usage (e.g. certUsageEmailRecipient) | |
| 1122 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 1123 * "email" and *we* add the "recipient" part -- otherwise our caller | |
| 1124 * could be lying about the usage; we do not want to allow encryption | |
| 1125 * certs for signing or vice versa. | |
| 1126 * | |
| 1127 * "certdb" is the cert database to use for verifying the cert. | |
| 1128 * It can be NULL if a default database is available (like in the client). | |
| 1129 * | |
| 1130 * "encalg" specifies the bulk encryption algorithm to use (e.g. SEC_OID_RC2). | |
| 1131 * | |
| 1132 * "keysize" specifies the bulk encryption key size, in bits. | |
| 1133 * | |
| 1134 * The return value can be passed to functions which add things to | |
| 1135 * it like more recipients, then eventually to SEC_PKCS7Encode() or to | |
| 1136 * SEC_PKCS7EncoderStart() to create the encoded data, and finally to | |
| 1137 * SEC_PKCS7DestroyContentInfo(). | |
| 1138 * | |
| 1139 * An error results in a return value of NULL and an error set. | |
| 1140 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1141 */ | |
| 1142 extern SEC_PKCS7ContentInfo * | |
| 1143 SEC_PKCS7CreateEnvelopedData (CERTCertificate *cert, | |
| 1144 SECCertUsage certusage, | |
| 1145 CERTCertDBHandle *certdb, | |
| 1146 SECOidTag encalg, | |
| 1147 int keysize, | |
| 1148 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 1149 { | |
| 1150 SEC_PKCS7ContentInfo *cinfo; | |
| 1151 SEC_PKCS7EnvelopedData *envd; | |
| 1152 SECStatus rv; | |
| 1153 | |
| 1154 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_ENVELOPED_DATA, | |
| 1155 PR_FALSE, pwfn, pwfn_arg); | |
| 1156 if (cinfo == NULL) | |
| 1157 return NULL; | |
| 1158 | |
| 1159 rv = sec_pkcs7_add_recipient (cinfo, cert, certusage, certdb); | |
| 1160 if (rv != SECSuccess) { | |
| 1161 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1162 return NULL; | |
| 1163 } | |
| 1164 | |
| 1165 envd = cinfo->content.envelopedData; | |
| 1166 PORT_Assert (envd != NULL); | |
| 1167 | |
| 1168 /* | |
| 1169 * XXX Might we want to allow content types other than data? | |
| 1170 * If so, via what interface? | |
| 1171 */ | |
| 1172 rv = sec_pkcs7_init_encrypted_content_info (&(envd->encContentInfo), | |
| 1173 cinfo->poolp, | |
| 1174 SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1175 encalg, keysize); | |
| 1176 if (rv != SECSuccess) { | |
| 1177 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1178 return NULL; | |
| 1179 } | |
| 1180 | |
| 1181 /* XXX Anything more to do here? */ | |
| 1182 | |
| 1183 return cinfo; | |
| 1184 } | |
| 1185 | |
| 1186 | |
| 1187 /* | |
| 1188 * Add another recipient to an encrypted message. | |
| 1189 * | |
| 1190 * "cinfo" should be of type envelopedData or signedAndEnvelopedData; | |
| 1191 * SECFailure will be returned if it is not. | |
| 1192 * | |
| 1193 * "cert" is the cert for the recipient. It will be checked for validity. | |
| 1194 * | |
| 1195 * "certusage" describes the encryption usage (e.g. certUsageEmailRecipient) | |
| 1196 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 1197 * "email" and *we* add the "recipient" part -- otherwise our caller | |
| 1198 * could be lying about the usage; we do not want to allow encryption | |
| 1199 * certs for signing or vice versa. | |
| 1200 * | |
| 1201 * "certdb" is the cert database to use for verifying the cert. | |
| 1202 * It can be NULL if a default database is available (like in the client). | |
| 1203 */ | |
| 1204 SECStatus | |
| 1205 SEC_PKCS7AddRecipient (SEC_PKCS7ContentInfo *cinfo, | |
| 1206 CERTCertificate *cert, | |
| 1207 SECCertUsage certusage, | |
| 1208 CERTCertDBHandle *certdb) | |
| 1209 { | |
| 1210 return sec_pkcs7_add_recipient (cinfo, cert, certusage, certdb); | |
| 1211 } | |
| 1212 | |
| 1213 | |
| 1214 /* | |
| 1215 * Create an empty PKCS7 data content info. | |
| 1216 * | |
| 1217 * An error results in a return value of NULL and an error set. | |
| 1218 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1219 */ | |
| 1220 SEC_PKCS7ContentInfo * | |
| 1221 SEC_PKCS7CreateData (void) | |
| 1222 { | |
| 1223 return sec_pkcs7_create_content_info (SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1224 NULL, NULL); | |
| 1225 } | |
| 1226 | |
| 1227 | |
| 1228 /* | |
| 1229 * Create an empty PKCS7 encrypted content info. | |
| 1230 * | |
| 1231 * "algorithm" specifies the bulk encryption algorithm to use. | |
| 1232 * | |
| 1233 * An error results in a return value of NULL and an error set. | |
| 1234 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1235 */ | |
| 1236 SEC_PKCS7ContentInfo * | |
| 1237 SEC_PKCS7CreateEncryptedData (SECOidTag algorithm, int keysize, | |
| 1238 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 1239 { | |
| 1240 SEC_PKCS7ContentInfo *cinfo; | |
| 1241 SECAlgorithmID *algid; | |
| 1242 SEC_PKCS7EncryptedData *enc_data; | |
| 1243 SECStatus rv; | |
| 1244 | |
| 1245 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_ENCRYPTED_DATA, | |
| 1246 PR_FALSE, pwfn, pwfn_arg); | |
| 1247 if (cinfo == NULL) | |
| 1248 return NULL; | |
| 1249 | |
| 1250 enc_data = cinfo->content.encryptedData; | |
| 1251 algid = &(enc_data->encContentInfo.contentEncAlg); | |
| 1252 | |
| 1253 if (!SEC_PKCS5IsAlgorithmPBEAlgTag(algorithm)) { | |
| 1254 rv = SECOID_SetAlgorithmID (cinfo->poolp, algid, algorithm, NULL); | |
| 1255 } else { | |
| 1256 /* Assume password-based-encryption. | |
| 1257 * Note: we can't generate pkcs5v2 from this interface. | |
| 1258 * PK11_CreateBPEAlgorithmID generates pkcs5v2 by accepting | |
| 1259 * non-PBE oids and assuming that they are pkcs5v2 oids, but | |
| 1260 * NSS_CMSEncryptedData_Create accepts non-PBE oids as regular | |
| 1261 * CMS encrypted data, so we can't tell SEC_PKCS7CreateEncryptedtedData | |
| 1262 * to create pkcs5v2 PBEs */ | |
| 1263 SECAlgorithmID *pbe_algid; | |
| 1264 pbe_algid = PK11_CreatePBEAlgorithmID(algorithm, | |
| 1265 NSS_PBE_DEFAULT_ITERATION_COUNT, | |
| 1266 NULL); | |
| 1267 if (pbe_algid == NULL) { | |
| 1268 rv = SECFailure; | |
| 1269 } else { | |
| 1270 rv = SECOID_CopyAlgorithmID (cinfo->poolp, algid, pbe_algid); | |
| 1271 SECOID_DestroyAlgorithmID (pbe_algid, PR_TRUE); | |
| 1272 } | |
| 1273 } | |
| 1274 | |
| 1275 if (rv != SECSuccess) { | |
| 1276 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1277 return NULL; | |
| 1278 } | |
| 1279 | |
| 1280 rv = sec_pkcs7_init_encrypted_content_info (&(enc_data->encContentInfo), | |
| 1281 cinfo->poolp, | |
| 1282 SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1283 algorithm, keysize); | |
| 1284 if (rv != SECSuccess) { | |
| 1285 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1286 return NULL; | |
| 1287 } | |
| 1288 | |
| 1289 return cinfo; | |
| 1290 } | |
| 1291 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master