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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 * $Id: p7create.c,v 1.11 2012/04/25 14:50:06 gerv%gerv.net Exp $ | |
| 9 */ | |
| 10 | |
| 11 #include "p7local.h" | |
| 12 | |
| 13 #include "cert.h" | |
| 14 #include "secasn1.h" | |
| 15 #include "secitem.h" | |
| 16 #include "secoid.h" | |
| 17 #include "pk11func.h" | |
| 18 #include "prtime.h" | |
| 19 #include "secerr.h" | |
| 20 #include "secder.h" | |
| 21 #include "secpkcs5.h" | |
| 22 | |
| 23 const int NSS_PBE_DEFAULT_ITERATION_COUNT = 2000; /* used in p12e.c too */ | |
| 24 | |
| 25 static SECStatus | |
| 26 sec_pkcs7_init_content_info (SEC_PKCS7ContentInfo *cinfo, PRArenaPool *poolp, | |
| 27 SECOidTag kind, PRBool detached) | |
| 28 { | |
| 29 void *thing; | |
| 30 int version; | |
| 31 SECItem *versionp; | |
| 32 SECStatus rv; | |
| 33 | |
| 34 PORT_Assert (cinfo != NULL && poolp != NULL); | |
| 35 if (cinfo == NULL || poolp == NULL) | |
| 36 return SECFailure; | |
| 37 | |
| 38 cinfo->contentTypeTag = SECOID_FindOIDByTag (kind); | |
| 39 PORT_Assert (cinfo->contentTypeTag | |
| 40 && cinfo->contentTypeTag->offset == kind); | |
| 41 | |
| 42 rv = SECITEM_CopyItem (poolp, &(cinfo->contentType), | |
| 43 &(cinfo->contentTypeTag->oid)); | |
| 44 if (rv != SECSuccess) | |
| 45 return rv; | |
| 46 | |
| 47 if (detached) | |
| 48 return SECSuccess; | |
| 49 | |
| 50 switch (kind) { | |
| 51 default: | |
| 52 case SEC_OID_PKCS7_DATA: | |
| 53 thing = PORT_ArenaZAlloc (poolp, sizeof(SECItem)); | |
| 54 cinfo->content.data = (SECItem*)thing; | |
| 55 versionp = NULL; | |
| 56 version = -1; | |
| 57 break; | |
| 58 case SEC_OID_PKCS7_DIGESTED_DATA: | |
| 59 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7DigestedData)); | |
| 60 cinfo->content.digestedData = (SEC_PKCS7DigestedData*)thing; | |
| 61 versionp = &(cinfo->content.digestedData->version); | |
| 62 version = SEC_PKCS7_DIGESTED_DATA_VERSION; | |
| 63 break; | |
| 64 case SEC_OID_PKCS7_ENCRYPTED_DATA: | |
| 65 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7EncryptedData)); | |
| 66 cinfo->content.encryptedData = (SEC_PKCS7EncryptedData*)thing; | |
| 67 versionp = &(cinfo->content.encryptedData->version); | |
| 68 version = SEC_PKCS7_ENCRYPTED_DATA_VERSION; | |
| 69 break; | |
| 70 case SEC_OID_PKCS7_ENVELOPED_DATA: | |
| 71 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7EnvelopedData)); | |
| 72 cinfo->content.envelopedData = | |
| 73 (SEC_PKCS7EnvelopedData*)thing; | |
| 74 versionp = &(cinfo->content.envelopedData->version); | |
| 75 version = SEC_PKCS7_ENVELOPED_DATA_VERSION; | |
| 76 break; | |
| 77 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 78 thing = PORT_ArenaZAlloc (poolp, sizeof(SEC_PKCS7SignedData)); | |
| 79 cinfo->content.signedData = | |
| 80 (SEC_PKCS7SignedData*)thing; | |
| 81 versionp = &(cinfo->content.signedData->version); | |
| 82 version = SEC_PKCS7_SIGNED_DATA_VERSION; | |
| 83 break; | |
| 84 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 85 thing = PORT_ArenaZAlloc(poolp,sizeof(SEC_PKCS7SignedAndEnvelopedData)); | |
| 86 cinfo->content.signedAndEnvelopedData = | |
| 87 (SEC_PKCS7SignedAndEnvelopedData*)thing; | |
| 88 versionp = &(cinfo->content.signedAndEnvelopedData->version); | |
| 89 version = SEC_PKCS7_SIGNED_AND_ENVELOPED_DATA_VERSION; | |
| 90 break; | |
| 91 } | |
| 92 | |
| 93 if (thing == NULL) | |
| 94 return SECFailure; | |
| 95 | |
| 96 if (versionp != NULL) { | |
| 97 SECItem *dummy; | |
| 98 | |
| 99 PORT_Assert (version >= 0); | |
| 100 dummy = SEC_ASN1EncodeInteger (poolp, versionp, version); | |
| 101 if (dummy == NULL) | |
| 102 return SECFailure; | |
| 103 PORT_Assert (dummy == versionp); | |
| 104 } | |
| 105 | |
| 106 return SECSuccess; | |
| 107 } | |
| 108 | |
| 109 | |
| 110 static SEC_PKCS7ContentInfo * | |
| 111 sec_pkcs7_create_content_info (SECOidTag kind, PRBool detached, | |
| 112 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 113 { | |
| 114 SEC_PKCS7ContentInfo *cinfo; | |
| 115 PRArenaPool *poolp; | |
| 116 SECStatus rv; | |
| 117 | |
| 118 poolp = PORT_NewArena (1024); /* XXX what is right value? */ | |
| 119 if (poolp == NULL) | |
| 120 return NULL; | |
| 121 | |
| 122 cinfo = (SEC_PKCS7ContentInfo*)PORT_ArenaZAlloc (poolp, sizeof(*cinfo)); | |
| 123 if (cinfo == NULL) { | |
| 124 PORT_FreeArena (poolp, PR_FALSE); | |
| 125 return NULL; | |
| 126 } | |
| 127 | |
| 128 cinfo->poolp = poolp; | |
| 129 cinfo->pwfn = pwfn; | |
| 130 cinfo->pwfn_arg = pwfn_arg; | |
| 131 cinfo->created = PR_TRUE; | |
| 132 cinfo->refCount = 1; | |
| 133 | |
| 134 rv = sec_pkcs7_init_content_info (cinfo, poolp, kind, detached); | |
| 135 if (rv != SECSuccess) { | |
| 136 PORT_FreeArena (poolp, PR_FALSE); | |
| 137 return NULL; | |
| 138 } | |
| 139 | |
| 140 return cinfo; | |
| 141 } | |
| 142 | |
| 143 | |
| 144 /* | |
| 145 * Add a signer to a PKCS7 thing, verifying the signature cert first. | |
| 146 * Any error returns SECFailure. | |
| 147 * | |
| 148 * XXX Right now this only adds the *first* signer. It fails if you try | |
| 149 * to add a second one -- this needs to be fixed. | |
| 150 */ | |
| 151 static SECStatus | |
| 152 sec_pkcs7_add_signer (SEC_PKCS7ContentInfo *cinfo, | |
| 153 CERTCertificate * cert, | |
| 154 SECCertUsage certusage, | |
| 155 CERTCertDBHandle * certdb, | |
| 156 SECOidTag digestalgtag, | |
| 157 SECItem * digestdata) | |
| 158 { | |
| 159 SEC_PKCS7SignerInfo *signerinfo, **signerinfos, ***signerinfosp; | |
| 160 SECAlgorithmID *digestalg, **digestalgs, ***digestalgsp; | |
| 161 SECItem *digest, **digests, ***digestsp; | |
| 162 SECItem * dummy; | |
| 163 void * mark; | |
| 164 SECStatus rv; | |
| 165 SECOidTag kind; | |
| 166 | |
| 167 kind = SEC_PKCS7ContentType (cinfo); | |
| 168 switch (kind) { | |
| 169 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 170 { | |
| 171 SEC_PKCS7SignedData *sdp; | |
| 172 | |
| 173 sdp = cinfo->content.signedData; | |
| 174 digestalgsp = &(sdp->digestAlgorithms); | |
| 175 digestsp = &(sdp->digests); | |
| 176 signerinfosp = &(sdp->signerInfos); | |
| 177 } | |
| 178 break; | |
| 179 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 180 { | |
| 181 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 182 | |
| 183 saedp = cinfo->content.signedAndEnvelopedData; | |
| 184 digestalgsp = &(saedp->digestAlgorithms); | |
| 185 digestsp = &(saedp->digests); | |
| 186 signerinfosp = &(saedp->signerInfos); | |
| 187 } | |
| 188 break; | |
| 189 default: | |
| 190 return SECFailure; /* XXX set an error? */ | |
| 191 } | |
| 192 | |
| 193 /* | |
| 194 * XXX I think that CERT_VerifyCert should do this if *it* is passed | |
| 195 * a NULL database. | |
| 196 */ | |
| 197 if (certdb == NULL) { | |
| 198 certdb = CERT_GetDefaultCertDB(); | |
| 199 if (certdb == NULL) | |
| 200 return SECFailure; /* XXX set an error? */ | |
| 201 } | |
| 202 | |
| 203 if (CERT_VerifyCert (certdb, cert, PR_TRUE, certusage, PR_Now(), | |
| 204 cinfo->pwfn_arg, NULL) != SECSuccess) | |
| 205 { | |
| 206 /* XXX Did CERT_VerifyCert set an error? */ | |
| 207 return SECFailure; | |
| 208 } | |
| 209 | |
| 210 /* | |
| 211 * XXX This is the check that we do not already have a signer. | |
| 212 * This is not what we really want -- we want to allow this | |
| 213 * and *add* the new signer. | |
| 214 */ | |
| 215 PORT_Assert (*signerinfosp == NULL | |
| 216 && *digestalgsp == NULL && *digestsp == NULL); | |
| 217 if (*signerinfosp != NULL || *digestalgsp != NULL || *digestsp != NULL) | |
| 218 return SECFailure; | |
| 219 | |
| 220 mark = PORT_ArenaMark (cinfo->poolp); | |
| 221 | |
| 222 signerinfo = (SEC_PKCS7SignerInfo*)PORT_ArenaZAlloc (cinfo->poolp, | |
| 223 sizeof(SEC_PKCS7SignerInfo)); | |
| 224 if (signerinfo == NULL) { | |
| 225 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 226 return SECFailure; | |
| 227 } | |
| 228 | |
| 229 dummy = SEC_ASN1EncodeInteger (cinfo->poolp, &signerinfo->version, | |
| 230 SEC_PKCS7_SIGNER_INFO_VERSION); | |
| 231 if (dummy == NULL) { | |
| 232 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 233 return SECFailure; | |
| 234 } | |
| 235 PORT_Assert (dummy == &signerinfo->version); | |
| 236 | |
| 237 signerinfo->cert = CERT_DupCertificate (cert); | |
| 238 if (signerinfo->cert == NULL) { | |
| 239 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 240 return SECFailure; | |
| 241 } | |
| 242 | |
| 243 signerinfo->issuerAndSN = CERT_GetCertIssuerAndSN (cinfo->poolp, cert); | |
| 244 if (signerinfo->issuerAndSN == NULL) { | |
| 245 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 246 return SECFailure; | |
| 247 } | |
| 248 | |
| 249 rv = SECOID_SetAlgorithmID (cinfo->poolp, &signerinfo->digestAlg, | |
| 250 digestalgtag, NULL); | |
| 251 if (rv != SECSuccess) { | |
| 252 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 253 return SECFailure; | |
| 254 } | |
| 255 | |
| 256 /* | |
| 257 * Okay, now signerinfo is all set. We just need to put it and its | |
| 258 * companions (another copy of the digest algorithm, and the digest | |
| 259 * itself if given) into the main structure. | |
| 260 * | |
| 261 * XXX If we are handling more than one signer, the following code | |
| 262 * needs to look through the digest algorithms already specified | |
| 263 * and see if the same one is there already. If it is, it does not | |
| 264 * need to be added again. Also, if it is there *and* the digest | |
| 265 * is not null, then the digest given should match the digest already | |
| 266 * specified -- if not, that is an error. Finally, the new signerinfo | |
| 267 * should be *added* to the set already found. | |
| 268 */ | |
| 269 | |
| 270 signerinfos = (SEC_PKCS7SignerInfo**)PORT_ArenaAlloc (cinfo->poolp, | |
| 271 2 * sizeof(SEC_PKCS7SignerInfo *)); | |
| 272 if (signerinfos == NULL) { | |
| 273 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 274 return SECFailure; | |
| 275 } | |
| 276 signerinfos[0] = signerinfo; | |
| 277 signerinfos[1] = NULL; | |
| 278 | |
| 279 digestalg = PORT_ArenaZAlloc (cinfo->poolp, sizeof(SECAlgorithmID)); | |
| 280 digestalgs = PORT_ArenaAlloc (cinfo->poolp, 2 * sizeof(SECAlgorithmID *)); | |
| 281 if (digestalg == NULL || digestalgs == NULL) { | |
| 282 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 283 return SECFailure; | |
| 284 } | |
| 285 rv = SECOID_SetAlgorithmID (cinfo->poolp, digestalg, digestalgtag, NULL); | |
| 286 if (rv != SECSuccess) { | |
| 287 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 288 return SECFailure; | |
| 289 } | |
| 290 digestalgs[0] = digestalg; | |
| 291 digestalgs[1] = NULL; | |
| 292 | |
| 293 if (digestdata != NULL) { | |
| 294 digest = (SECItem*)PORT_ArenaAlloc (cinfo->poolp, sizeof(SECItem)); | |
| 295 digests = (SECItem**)PORT_ArenaAlloc (cinfo->poolp, | |
| 296 2 * sizeof(SECItem *)); | |
| 297 if (digest == NULL || digests == NULL) { | |
| 298 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 299 return SECFailure; | |
| 300 } | |
| 301 rv = SECITEM_CopyItem (cinfo->poolp, digest, digestdata); | |
| 302 if (rv != SECSuccess) { | |
| 303 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 304 return SECFailure; | |
| 305 } | |
| 306 digests[0] = digest; | |
| 307 digests[1] = NULL; | |
| 308 } else { | |
| 309 digests = NULL; | |
| 310 } | |
| 311 | |
| 312 *signerinfosp = signerinfos; | |
| 313 *digestalgsp = digestalgs; | |
| 314 *digestsp = digests; | |
| 315 | |
| 316 PORT_ArenaUnmark(cinfo->poolp, mark); | |
| 317 return SECSuccess; | |
| 318 } | |
| 319 | |
| 320 | |
| 321 /* | |
| 322 * Helper function for creating an empty signedData. | |
| 323 */ | |
| 324 static SEC_PKCS7ContentInfo * | |
| 325 sec_pkcs7_create_signed_data (SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 326 { | |
| 327 SEC_PKCS7ContentInfo *cinfo; | |
| 328 SEC_PKCS7SignedData *sigd; | |
| 329 SECStatus rv; | |
| 330 | |
| 331 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_SIGNED_DATA, PR_FALSE, | |
| 332 pwfn, pwfn_arg); | |
| 333 if (cinfo == NULL) | |
| 334 return NULL; | |
| 335 | |
| 336 sigd = cinfo->content.signedData; | |
| 337 PORT_Assert (sigd != NULL); | |
| 338 | |
| 339 /* | |
| 340 * XXX Might we want to allow content types other than data? | |
| 341 * If so, via what interface? | |
| 342 */ | |
| 343 rv = sec_pkcs7_init_content_info (&(sigd->contentInfo), cinfo->poolp, | |
| 344 SEC_OID_PKCS7_DATA, PR_TRUE); | |
| 345 if (rv != SECSuccess) { | |
| 346 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 347 return NULL; | |
| 348 } | |
| 349 | |
| 350 return cinfo; | |
| 351 } | |
| 352 | |
| 353 | |
| 354 /* | |
| 355 * Start a PKCS7 signing context. | |
| 356 * | |
| 357 * "cert" is the cert that will be used to sign the data. It will be | |
| 358 * checked for validity. | |
| 359 * | |
| 360 * "certusage" describes the signing usage (e.g. certUsageEmailSigner) | |
| 361 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 362 * "email" and *we* add the "signing" part -- otherwise our caller | |
| 363 * could be lying about the usage; we do not want to allow encryption | |
| 364 * certs for signing or vice versa. | |
| 365 * | |
| 366 * "certdb" is the cert database to use for verifying the cert. | |
| 367 * It can be NULL if a default database is available (like in the client). | |
| 368 * | |
| 369 * "digestalg" names the digest algorithm (e.g. SEC_OID_SHA1). | |
| 370 * | |
| 371 * "digest" is the actual digest of the data. It must be provided in | |
| 372 * the case of detached data or NULL if the content will be included. | |
| 373 * | |
| 374 * The return value can be passed to functions which add things to | |
| 375 * it like attributes, then eventually to SEC_PKCS7Encode() or to | |
| 376 * SEC_PKCS7EncoderStart() to create the encoded data, and finally to | |
| 377 * SEC_PKCS7DestroyContentInfo(). | |
| 378 * | |
| 379 * An error results in a return value of NULL and an error set. | |
| 380 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 381 */ | |
| 382 SEC_PKCS7ContentInfo * | |
| 383 SEC_PKCS7CreateSignedData (CERTCertificate *cert, | |
| 384 SECCertUsage certusage, | |
| 385 CERTCertDBHandle *certdb, | |
| 386 SECOidTag digestalg, | |
| 387 SECItem *digest, | |
| 388 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 389 { | |
| 390 SEC_PKCS7ContentInfo *cinfo; | |
| 391 SECStatus rv; | |
| 392 | |
| 393 cinfo = sec_pkcs7_create_signed_data (pwfn, pwfn_arg); | |
| 394 if (cinfo == NULL) | |
| 395 return NULL; | |
| 396 | |
| 397 rv = sec_pkcs7_add_signer (cinfo, cert, certusage, certdb, | |
| 398 digestalg, digest); | |
| 399 if (rv != SECSuccess) { | |
| 400 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 401 return NULL; | |
| 402 } | |
| 403 | |
| 404 return cinfo; | |
| 405 } | |
| 406 | |
| 407 | |
| 408 static SEC_PKCS7Attribute * | |
| 409 sec_pkcs7_create_attribute (PRArenaPool *poolp, SECOidTag oidtag, | |
| 410 SECItem *value, PRBool encoded) | |
| 411 { | |
| 412 SEC_PKCS7Attribute *attr; | |
| 413 SECItem **values; | |
| 414 void *mark; | |
| 415 | |
| 416 PORT_Assert (poolp != NULL); | |
| 417 mark = PORT_ArenaMark (poolp); | |
| 418 | |
| 419 attr = (SEC_PKCS7Attribute*)PORT_ArenaAlloc (poolp, | |
| 420 sizeof(SEC_PKCS7Attribute)); | |
| 421 if (attr == NULL) | |
| 422 goto loser; | |
| 423 | |
| 424 attr->typeTag = SECOID_FindOIDByTag (oidtag); | |
| 425 if (attr->typeTag == NULL) | |
| 426 goto loser; | |
| 427 | |
| 428 if (SECITEM_CopyItem (poolp, &(attr->type), | |
| 429 &(attr->typeTag->oid)) != SECSuccess) | |
| 430 goto loser; | |
| 431 | |
| 432 values = (SECItem**)PORT_ArenaAlloc (poolp, 2 * sizeof(SECItem *)); | |
| 433 if (values == NULL) | |
| 434 goto loser; | |
| 435 | |
| 436 if (value != NULL) { | |
| 437 SECItem *copy; | |
| 438 | |
| 439 copy = (SECItem*)PORT_ArenaAlloc (poolp, sizeof(SECItem)); | |
| 440 if (copy == NULL) | |
| 441 goto loser; | |
| 442 | |
| 443 if (SECITEM_CopyItem (poolp, copy, value) != SECSuccess) | |
| 444 goto loser; | |
| 445 | |
| 446 value = copy; | |
| 447 } | |
| 448 | |
| 449 values[0] = value; | |
| 450 values[1] = NULL; | |
| 451 attr->values = values; | |
| 452 attr->encoded = encoded; | |
| 453 | |
| 454 PORT_ArenaUnmark (poolp, mark); | |
| 455 return attr; | |
| 456 | |
| 457 loser: | |
| 458 PORT_Assert (mark != NULL); | |
| 459 PORT_ArenaRelease (poolp, mark); | |
| 460 return NULL; | |
| 461 } | |
| 462 | |
| 463 | |
| 464 static SECStatus | |
| 465 sec_pkcs7_add_attribute (SEC_PKCS7ContentInfo *cinfo, | |
| 466 SEC_PKCS7Attribute ***attrsp, | |
| 467 SEC_PKCS7Attribute *attr) | |
| 468 { | |
| 469 SEC_PKCS7Attribute **attrs; | |
| 470 SECItem *ct_value; | |
| 471 void *mark; | |
| 472 | |
| 473 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 474 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 475 return SECFailure; | |
| 476 | |
| 477 attrs = *attrsp; | |
| 478 if (attrs != NULL) { | |
| 479 int count; | |
| 480 | |
| 481 /* | |
| 482 * We already have some attributes, and just need to add this | |
| 483 * new one. | |
| 484 */ | |
| 485 | |
| 486 /* | |
| 487 * We should already have the *required* attributes, which were | |
| 488 * created/added at the same time the first attribute was added. | |
| 489 */ | |
| 490 PORT_Assert (sec_PKCS7FindAttribute (attrs, | |
| 491 SEC_OID_PKCS9_CONTENT_TYPE, | |
| 492 PR_FALSE) != NULL); | |
| 493 PORT_Assert (sec_PKCS7FindAttribute (attrs, | |
| 494 SEC_OID_PKCS9_MESSAGE_DIGEST, | |
| 495 PR_FALSE) != NULL); | |
| 496 | |
| 497 for (count = 0; attrs[count] != NULL; count++) | |
| 498 ; | |
| 499 attrs = (SEC_PKCS7Attribute**)PORT_ArenaGrow (cinfo->poolp, attrs, | |
| 500 (count + 1) * sizeof(SEC_PKCS7Attribute *), | |
| 501 (count + 2) * sizeof(SEC_PKCS7Attribute *)); | |
| 502 if (attrs == NULL) | |
| 503 return SECFailure; | |
| 504 | |
| 505 attrs[count] = attr; | |
| 506 attrs[count+1] = NULL; | |
| 507 *attrsp = attrs; | |
| 508 | |
| 509 return SECSuccess; | |
| 510 } | |
| 511 | |
| 512 /* | |
| 513 * This is the first time an attribute is going in. | |
| 514 * We need to create and add the required attributes, and then | |
| 515 * we will also add in the one our caller gave us. | |
| 516 */ | |
| 517 | |
| 518 /* | |
| 519 * There are 2 required attributes, plus the one our caller wants | |
| 520 * to add, plus we always end with a NULL one. Thus, four slots. | |
| 521 */ | |
| 522 attrs = (SEC_PKCS7Attribute**)PORT_ArenaAlloc (cinfo->poolp, | |
| 523 4 * sizeof(SEC_PKCS7Attribute *)); | |
| 524 if (attrs == NULL) | |
| 525 return SECFailure; | |
| 526 | |
| 527 mark = PORT_ArenaMark (cinfo->poolp); | |
| 528 | |
| 529 /* | |
| 530 * First required attribute is the content type of the data | |
| 531 * being signed. | |
| 532 */ | |
| 533 ct_value = &(cinfo->content.signedData->contentInfo.contentType); | |
| 534 attrs[0] = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 535 SEC_OID_PKCS9_CONTENT_TYPE, | |
| 536 ct_value, PR_FALSE); | |
| 537 /* | |
| 538 * Second required attribute is the message digest of the data | |
| 539 * being signed; we leave the value NULL for now (just create | |
| 540 * the place for it to go), and the encoder will fill it in later. | |
| 541 */ | |
| 542 attrs[1] = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 543 SEC_OID_PKCS9_MESSAGE_DIGEST, | |
| 544 NULL, PR_FALSE); | |
| 545 if (attrs[0] == NULL || attrs[1] == NULL) { | |
| 546 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 547 return SECFailure; | |
| 548 } | |
| 549 | |
| 550 attrs[2] = attr; | |
| 551 attrs[3] = NULL; | |
| 552 *attrsp = attrs; | |
| 553 | |
| 554 PORT_ArenaUnmark (cinfo->poolp, mark); | |
| 555 return SECSuccess; | |
| 556 } | |
| 557 | |
| 558 | |
| 559 /* | |
| 560 * Add the signing time to the authenticated (i.e. signed) attributes | |
| 561 * of "cinfo". This is expected to be included in outgoing signed | |
| 562 * messages for email (S/MIME) but is likely useful in other situations. | |
| 563 * | |
| 564 * This should only be added once; a second call will either do | |
| 565 * nothing or replace an old signing time with a newer one. | |
| 566 * | |
| 567 * XXX This will probably just shove the current time into "cinfo" | |
| 568 * but it will not actually get signed until the entire item is | |
| 569 * processed for encoding. Is this (expected to be small) delay okay? | |
| 570 * | |
| 571 * "cinfo" should be of type signedData (the only kind of pkcs7 data | |
| 572 * that is allowed authenticated attributes); SECFailure will be returned | |
| 573 * if it is not. | |
| 574 */ | |
| 575 SECStatus | |
| 576 SEC_PKCS7AddSigningTime (SEC_PKCS7ContentInfo *cinfo) | |
| 577 { | |
| 578 SEC_PKCS7SignerInfo **signerinfos; | |
| 579 SEC_PKCS7Attribute *attr; | |
| 580 SECItem stime; | |
| 581 SECStatus rv; | |
| 582 int si; | |
| 583 | |
| 584 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 585 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 586 return SECFailure; | |
| 587 | |
| 588 signerinfos = cinfo->content.signedData->signerInfos; | |
| 589 | |
| 590 /* There has to be a signer, or it makes no sense. */ | |
| 591 if (signerinfos == NULL || signerinfos[0] == NULL) | |
| 592 return SECFailure; | |
| 593 | |
| 594 rv = DER_EncodeTimeChoice(NULL, &stime, PR_Now()); | |
| 595 if (rv != SECSuccess) | |
| 596 return rv; | |
| 597 | |
| 598 attr = sec_pkcs7_create_attribute (cinfo->poolp, | |
| 599 SEC_OID_PKCS9_SIGNING_TIME, | |
| 600 &stime, PR_FALSE); | |
| 601 SECITEM_FreeItem (&stime, PR_FALSE); | |
| 602 | |
| 603 if (attr == NULL) | |
| 604 return SECFailure; | |
| 605 | |
| 606 rv = SECSuccess; | |
| 607 for (si = 0; signerinfos[si] != NULL; si++) { | |
| 608 SEC_PKCS7Attribute *oattr; | |
| 609 | |
| 610 oattr = sec_PKCS7FindAttribute (signerinfos[si]->authAttr, | |
| 611 SEC_OID_PKCS9_SIGNING_TIME, PR_FALSE); | |
| 612 PORT_Assert (oattr == NULL); | |
| 613 if (oattr != NULL) | |
| 614 continue; /* XXX or would it be better to replace it? */ | |
| 615 | |
| 616 rv = sec_pkcs7_add_attribute (cinfo, &(signerinfos[si]->authAttr), | |
| 617 attr); | |
| 618 if (rv != SECSuccess) | |
| 619 break; /* could try to continue, but may as well give up now */ | |
| 620 } | |
| 621 | |
| 622 return rv; | |
| 623 } | |
| 624 | |
| 625 | |
| 626 /* | |
| 627 * Add the specified attribute to the authenticated (i.e. signed) attributes | |
| 628 * of "cinfo" -- "oidtag" describes the attribute and "value" is the | |
| 629 * value to be associated with it. NOTE! "value" must already be encoded; | |
| 630 * no interpretation of "oidtag" is done. Also, it is assumed that this | |
| 631 * signedData has only one signer -- if we ever need to add attributes | |
| 632 * when there is more than one signature, we need a way to specify *which* | |
| 633 * signature should get the attribute. | |
| 634 * | |
| 635 * XXX Technically, a signed attribute can have multiple values; if/when | |
| 636 * we ever need to support an attribute which takes multiple values, we | |
| 637 * either need to change this interface or create an AddSignedAttributeValue | |
| 638 * which can be called subsequently, and would then append a value. | |
| 639 * | |
| 640 * "cinfo" should be of type signedData (the only kind of pkcs7 data | |
| 641 * that is allowed authenticated attributes); SECFailure will be returned | |
| 642 * if it is not. | |
| 643 */ | |
| 644 SECStatus | |
| 645 SEC_PKCS7AddSignedAttribute (SEC_PKCS7ContentInfo *cinfo, | |
| 646 SECOidTag oidtag, | |
| 647 SECItem *value) | |
| 648 { | |
| 649 SEC_PKCS7SignerInfo **signerinfos; | |
| 650 SEC_PKCS7Attribute *attr; | |
| 651 | |
| 652 PORT_Assert (SEC_PKCS7ContentType (cinfo) == SEC_OID_PKCS7_SIGNED_DATA); | |
| 653 if (SEC_PKCS7ContentType (cinfo) != SEC_OID_PKCS7_SIGNED_DATA) | |
| 654 return SECFailure; | |
| 655 | |
| 656 signerinfos = cinfo->content.signedData->signerInfos; | |
| 657 | |
| 658 /* | |
| 659 * No signature or more than one means no deal. | |
| 660 */ | |
| 661 if (signerinfos == NULL || signerinfos[0] == NULL || signerinfos[1] != NULL) | |
| 662 return SECFailure; | |
| 663 | |
| 664 attr = sec_pkcs7_create_attribute (cinfo->poolp, oidtag, value, PR_TRUE); | |
| 665 if (attr == NULL) | |
| 666 return SECFailure; | |
| 667 | |
| 668 return sec_pkcs7_add_attribute (cinfo, &(signerinfos[0]->authAttr), attr); | |
| 669 } | |
| 670 | |
| 671 | |
| 672 /* | |
| 673 * Mark that the signer certificates and their issuing chain should | |
| 674 * be included in the encoded data. This is expected to be used | |
| 675 * in outgoing signed messages for email (S/MIME). | |
| 676 * | |
| 677 * "certdb" is the cert database to use for finding the chain. | |
| 678 * It can be NULL, meaning use the default database. | |
| 679 * | |
| 680 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 681 * SECFailure will be returned if it is not. | |
| 682 */ | |
| 683 SECStatus | |
| 684 SEC_PKCS7IncludeCertChain (SEC_PKCS7ContentInfo *cinfo, | |
| 685 CERTCertDBHandle *certdb) | |
| 686 { | |
| 687 SECOidTag kind; | |
| 688 SEC_PKCS7SignerInfo *signerinfo, **signerinfos; | |
| 689 | |
| 690 kind = SEC_PKCS7ContentType (cinfo); | |
| 691 switch (kind) { | |
| 692 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 693 signerinfos = cinfo->content.signedData->signerInfos; | |
| 694 break; | |
| 695 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 696 signerinfos = cinfo->content.signedAndEnvelopedData->signerInfos; | |
| 697 break; | |
| 698 default: | |
| 699 return SECFailure; /* XXX set an error? */ | |
| 700 } | |
| 701 | |
| 702 if (signerinfos == NULL) /* no signer, no certs? */ | |
| 703 return SECFailure; /* XXX set an error? */ | |
| 704 | |
| 705 if (certdb == NULL) { | |
| 706 certdb = CERT_GetDefaultCertDB(); | |
| 707 if (certdb == NULL) { | |
| 708 PORT_SetError (SEC_ERROR_BAD_DATABASE); | |
| 709 return SECFailure; | |
| 710 } | |
| 711 } | |
| 712 | |
| 713 /* XXX Should it be an error if we find no signerinfo or no certs? */ | |
| 714 while ((signerinfo = *signerinfos++) != NULL) { | |
| 715 if (signerinfo->cert != NULL) | |
| 716 /* get the cert chain. don't send the root to avoid contamination | |
| 717 * of old clients with a new root that they don't trust | |
| 718 */ | |
| 719 signerinfo->certList = CERT_CertChainFromCert (signerinfo->cert, | |
| 720 certUsageEmailSigner, | |
| 721 PR_FALSE); | |
| 722 } | |
| 723 | |
| 724 return SECSuccess; | |
| 725 } | |
| 726 | |
| 727 | |
| 728 /* | |
| 729 * Helper function to add a certificate chain for inclusion in the | |
| 730 * bag of certificates in a signedData. | |
| 731 */ | |
| 732 static SECStatus | |
| 733 sec_pkcs7_add_cert_chain (SEC_PKCS7ContentInfo *cinfo, | |
| 734 CERTCertificate *cert, | |
| 735 CERTCertDBHandle *certdb) | |
| 736 { | |
| 737 SECOidTag kind; | |
| 738 CERTCertificateList *certlist, **certlists, ***certlistsp; | |
| 739 int count; | |
| 740 | |
| 741 kind = SEC_PKCS7ContentType (cinfo); | |
| 742 switch (kind) { | |
| 743 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 744 { | |
| 745 SEC_PKCS7SignedData *sdp; | |
| 746 | |
| 747 sdp = cinfo->content.signedData; | |
| 748 certlistsp = &(sdp->certLists); | |
| 749 } | |
| 750 break; | |
| 751 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 752 { | |
| 753 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 754 | |
| 755 saedp = cinfo->content.signedAndEnvelopedData; | |
| 756 certlistsp = &(saedp->certLists); | |
| 757 } | |
| 758 break; | |
| 759 default: | |
| 760 return SECFailure; /* XXX set an error? */ | |
| 761 } | |
| 762 | |
| 763 if (certdb == NULL) { | |
| 764 certdb = CERT_GetDefaultCertDB(); | |
| 765 if (certdb == NULL) { | |
| 766 PORT_SetError (SEC_ERROR_BAD_DATABASE); | |
| 767 return SECFailure; | |
| 768 } | |
| 769 } | |
| 770 | |
| 771 certlist = CERT_CertChainFromCert (cert, certUsageEmailSigner, PR_FALSE); | |
| 772 if (certlist == NULL) | |
| 773 return SECFailure; | |
| 774 | |
| 775 certlists = *certlistsp; | |
| 776 if (certlists == NULL) { | |
| 777 count = 0; | |
| 778 certlists = (CERTCertificateList**)PORT_ArenaAlloc (cinfo->poolp, | |
| 779 2 * sizeof(CERTCertificateList *)); | |
| 780 } else { | |
| 781 for (count = 0; certlists[count] != NULL; count++) | |
| 782 ; | |
| 783 PORT_Assert (count); /* should be at least one already */ | |
| 784 certlists = (CERTCertificateList**)PORT_ArenaGrow (cinfo->poolp, | |
| 785 certlists, | |
| 786 (count + 1) * sizeof(CERTCertificateList *), | |
| 787 (count + 2) * sizeof(CERTCertificateList *)); | |
| 788 } | |
| 789 | |
| 790 if (certlists == NULL) { | |
| 791 CERT_DestroyCertificateList (certlist); | |
| 792 return SECFailure; | |
| 793 } | |
| 794 | |
| 795 certlists[count] = certlist; | |
| 796 certlists[count + 1] = NULL; | |
| 797 | |
| 798 *certlistsp = certlists; | |
| 799 | |
| 800 return SECSuccess; | |
| 801 } | |
| 802 | |
| 803 | |
| 804 /* | |
| 805 * Helper function to add a certificate for inclusion in the bag of | |
| 806 * certificates in a signedData. | |
| 807 */ | |
| 808 static SECStatus | |
| 809 sec_pkcs7_add_certificate (SEC_PKCS7ContentInfo *cinfo, | |
| 810 CERTCertificate *cert) | |
| 811 { | |
| 812 SECOidTag kind; | |
| 813 CERTCertificate **certs, ***certsp; | |
| 814 int count; | |
| 815 | |
| 816 kind = SEC_PKCS7ContentType (cinfo); | |
| 817 switch (kind) { | |
| 818 case SEC_OID_PKCS7_SIGNED_DATA: | |
| 819 { | |
| 820 SEC_PKCS7SignedData *sdp; | |
| 821 | |
| 822 sdp = cinfo->content.signedData; | |
| 823 certsp = &(sdp->certs); | |
| 824 } | |
| 825 break; | |
| 826 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 827 { | |
| 828 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 829 | |
| 830 saedp = cinfo->content.signedAndEnvelopedData; | |
| 831 certsp = &(saedp->certs); | |
| 832 } | |
| 833 break; | |
| 834 default: | |
| 835 return SECFailure; /* XXX set an error? */ | |
| 836 } | |
| 837 | |
| 838 cert = CERT_DupCertificate (cert); | |
| 839 if (cert == NULL) | |
| 840 return SECFailure; | |
| 841 | |
| 842 certs = *certsp; | |
| 843 if (certs == NULL) { | |
| 844 count = 0; | |
| 845 certs = (CERTCertificate**)PORT_ArenaAlloc (cinfo->poolp, | |
| 846 2 * sizeof(CERTCertificate *)); | |
| 847 } else { | |
| 848 for (count = 0; certs[count] != NULL; count++) | |
| 849 ; | |
| 850 PORT_Assert (count); /* should be at least one already */ | |
| 851 certs = (CERTCertificate**)PORT_ArenaGrow (cinfo->poolp, certs, | |
| 852 (count + 1) * sizeof(CERTCertificate *), | |
| 853 (count + 2) * sizeof(CERTCertificate *)); | |
| 854 } | |
| 855 | |
| 856 if (certs == NULL) { | |
| 857 CERT_DestroyCertificate (cert); | |
| 858 return SECFailure; | |
| 859 } | |
| 860 | |
| 861 certs[count] = cert; | |
| 862 certs[count + 1] = NULL; | |
| 863 | |
| 864 *certsp = certs; | |
| 865 | |
| 866 return SECSuccess; | |
| 867 } | |
| 868 | |
| 869 | |
| 870 /* | |
| 871 * Create a PKCS7 certs-only container. | |
| 872 * | |
| 873 * "cert" is the (first) cert that will be included. | |
| 874 * | |
| 875 * "include_chain" specifies whether the entire chain for "cert" should | |
| 876 * be included. | |
| 877 * | |
| 878 * "certdb" is the cert database to use for finding the chain. | |
| 879 * It can be NULL in when "include_chain" is false, or when meaning | |
| 880 * use the default database. | |
| 881 * | |
| 882 * More certs and chains can be added via AddCertificate and AddCertChain. | |
| 883 * | |
| 884 * An error results in a return value of NULL and an error set. | |
| 885 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 886 */ | |
| 887 SEC_PKCS7ContentInfo * | |
| 888 SEC_PKCS7CreateCertsOnly (CERTCertificate *cert, | |
| 889 PRBool include_chain, | |
| 890 CERTCertDBHandle *certdb) | |
| 891 { | |
| 892 SEC_PKCS7ContentInfo *cinfo; | |
| 893 SECStatus rv; | |
| 894 | |
| 895 cinfo = sec_pkcs7_create_signed_data (NULL, NULL); | |
| 896 if (cinfo == NULL) | |
| 897 return NULL; | |
| 898 | |
| 899 if (include_chain) | |
| 900 rv = sec_pkcs7_add_cert_chain (cinfo, cert, certdb); | |
| 901 else | |
| 902 rv = sec_pkcs7_add_certificate (cinfo, cert); | |
| 903 | |
| 904 if (rv != SECSuccess) { | |
| 905 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 906 return NULL; | |
| 907 } | |
| 908 | |
| 909 return cinfo; | |
| 910 } | |
| 911 | |
| 912 | |
| 913 /* | |
| 914 * Add "cert" and its entire chain to the set of certs included in "cinfo". | |
| 915 * | |
| 916 * "certdb" is the cert database to use for finding the chain. | |
| 917 * It can be NULL, meaning use the default database. | |
| 918 * | |
| 919 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 920 * SECFailure will be returned if it is not. | |
| 921 */ | |
| 922 SECStatus | |
| 923 SEC_PKCS7AddCertChain (SEC_PKCS7ContentInfo *cinfo, | |
| 924 CERTCertificate *cert, | |
| 925 CERTCertDBHandle *certdb) | |
| 926 { | |
| 927 SECOidTag kind; | |
| 928 | |
| 929 kind = SEC_PKCS7ContentType (cinfo); | |
| 930 if (kind != SEC_OID_PKCS7_SIGNED_DATA | |
| 931 && kind != SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA) | |
| 932 return SECFailure; /* XXX set an error? */ | |
| 933 | |
| 934 return sec_pkcs7_add_cert_chain (cinfo, cert, certdb); | |
| 935 } | |
| 936 | |
| 937 | |
| 938 /* | |
| 939 * Add "cert" to the set of certs included in "cinfo". | |
| 940 * | |
| 941 * "cinfo" should be of type signedData or signedAndEnvelopedData; | |
| 942 * SECFailure will be returned if it is not. | |
| 943 */ | |
| 944 SECStatus | |
| 945 SEC_PKCS7AddCertificate (SEC_PKCS7ContentInfo *cinfo, CERTCertificate *cert) | |
| 946 { | |
| 947 SECOidTag kind; | |
| 948 | |
| 949 kind = SEC_PKCS7ContentType (cinfo); | |
| 950 if (kind != SEC_OID_PKCS7_SIGNED_DATA | |
| 951 && kind != SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA) | |
| 952 return SECFailure; /* XXX set an error? */ | |
| 953 | |
| 954 return sec_pkcs7_add_certificate (cinfo, cert); | |
| 955 } | |
| 956 | |
| 957 | |
| 958 static SECStatus | |
| 959 sec_pkcs7_init_encrypted_content_info (SEC_PKCS7EncryptedContentInfo *enccinfo, | |
| 960 PRArenaPool *poolp, | |
| 961 SECOidTag kind, PRBool detached, | |
| 962 SECOidTag encalg, int keysize) | |
| 963 { | |
| 964 SECStatus rv; | |
| 965 | |
| 966 PORT_Assert (enccinfo != NULL && poolp != NULL); | |
| 967 if (enccinfo == NULL || poolp == NULL) | |
| 968 return SECFailure; | |
| 969 | |
| 970 /* | |
| 971 * XXX Some day we may want to allow for other kinds. That needs | |
| 972 * more work and modifications to the creation interface, etc. | |
| 973 * For now, allow but notice callers who pass in other kinds. | |
| 974 * They are responsible for creating the inner type and encoding, | |
| 975 * if it is other than DATA. | |
| 976 */ | |
| 977 PORT_Assert (kind == SEC_OID_PKCS7_DATA); | |
| 978 | |
| 979 enccinfo->contentTypeTag = SECOID_FindOIDByTag (kind); | |
| 980 PORT_Assert (enccinfo->contentTypeTag | |
| 981 && enccinfo->contentTypeTag->offset == kind); | |
| 982 | |
| 983 rv = SECITEM_CopyItem (poolp, &(enccinfo->contentType), | |
| 984 &(enccinfo->contentTypeTag->oid)); | |
| 985 if (rv != SECSuccess) | |
| 986 return rv; | |
| 987 | |
| 988 /* Save keysize and algorithm for later. */ | |
| 989 enccinfo->keysize = keysize; | |
| 990 enccinfo->encalg = encalg; | |
| 991 | |
| 992 return SECSuccess; | |
| 993 } | |
| 994 | |
| 995 | |
| 996 /* | |
| 997 * Add a recipient to a PKCS7 thing, verifying their cert first. | |
| 998 * Any error returns SECFailure. | |
| 999 */ | |
| 1000 static SECStatus | |
| 1001 sec_pkcs7_add_recipient (SEC_PKCS7ContentInfo *cinfo, | |
| 1002 CERTCertificate *cert, | |
| 1003 SECCertUsage certusage, | |
| 1004 CERTCertDBHandle *certdb) | |
| 1005 { | |
| 1006 SECOidTag kind; | |
| 1007 SEC_PKCS7RecipientInfo *recipientinfo, **recipientinfos, ***recipientinfosp; | |
| 1008 SECItem *dummy; | |
| 1009 void *mark; | |
| 1010 int count; | |
| 1011 | |
| 1012 kind = SEC_PKCS7ContentType (cinfo); | |
| 1013 switch (kind) { | |
| 1014 case SEC_OID_PKCS7_ENVELOPED_DATA: | |
| 1015 { | |
| 1016 SEC_PKCS7EnvelopedData *edp; | |
| 1017 | |
| 1018 edp = cinfo->content.envelopedData; | |
| 1019 recipientinfosp = &(edp->recipientInfos); | |
| 1020 } | |
| 1021 break; | |
| 1022 case SEC_OID_PKCS7_SIGNED_ENVELOPED_DATA: | |
| 1023 { | |
| 1024 SEC_PKCS7SignedAndEnvelopedData *saedp; | |
| 1025 | |
| 1026 saedp = cinfo->content.signedAndEnvelopedData; | |
| 1027 recipientinfosp = &(saedp->recipientInfos); | |
| 1028 } | |
| 1029 break; | |
| 1030 default: | |
| 1031 return SECFailure; /* XXX set an error? */ | |
| 1032 } | |
| 1033 | |
| 1034 /* | |
| 1035 * XXX I think that CERT_VerifyCert should do this if *it* is passed | |
| 1036 * a NULL database. | |
| 1037 */ | |
| 1038 if (certdb == NULL) { | |
| 1039 certdb = CERT_GetDefaultCertDB(); | |
| 1040 if (certdb == NULL) | |
| 1041 return SECFailure; /* XXX set an error? */ | |
| 1042 } | |
| 1043 | |
| 1044 if (CERT_VerifyCert (certdb, cert, PR_TRUE, certusage, PR_Now(), | |
| 1045 cinfo->pwfn_arg, NULL) != SECSuccess) | |
| 1046 { | |
| 1047 /* XXX Did CERT_VerifyCert set an error? */ | |
| 1048 return SECFailure; | |
| 1049 } | |
| 1050 | |
| 1051 mark = PORT_ArenaMark (cinfo->poolp); | |
| 1052 | |
| 1053 recipientinfo = (SEC_PKCS7RecipientInfo*)PORT_ArenaZAlloc (cinfo->poolp, | |
| 1054 sizeof(SEC_PKCS7RecipientInfo)); | |
| 1055 if (recipientinfo == NULL) { | |
| 1056 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1057 return SECFailure; | |
| 1058 } | |
| 1059 | |
| 1060 dummy = SEC_ASN1EncodeInteger (cinfo->poolp, &recipientinfo->version, | |
| 1061 SEC_PKCS7_RECIPIENT_INFO_VERSION); | |
| 1062 if (dummy == NULL) { | |
| 1063 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1064 return SECFailure; | |
| 1065 } | |
| 1066 PORT_Assert (dummy == &recipientinfo->version); | |
| 1067 | |
| 1068 recipientinfo->cert = CERT_DupCertificate (cert); | |
| 1069 if (recipientinfo->cert == NULL) { | |
| 1070 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1071 return SECFailure; | |
| 1072 } | |
| 1073 | |
| 1074 recipientinfo->issuerAndSN = CERT_GetCertIssuerAndSN (cinfo->poolp, cert); | |
| 1075 if (recipientinfo->issuerAndSN == NULL) { | |
| 1076 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1077 return SECFailure; | |
| 1078 } | |
| 1079 | |
| 1080 /* | |
| 1081 * Okay, now recipientinfo is all set. We just need to put it into | |
| 1082 * the main structure. | |
| 1083 * | |
| 1084 * If this is the first recipient, allocate a new recipientinfos array; | |
| 1085 * otherwise, reallocate the array, making room for the new entry. | |
| 1086 */ | |
| 1087 recipientinfos = *recipientinfosp; | |
| 1088 if (recipientinfos == NULL) { | |
| 1089 count = 0; | |
| 1090 recipientinfos = (SEC_PKCS7RecipientInfo **)PORT_ArenaAlloc ( | |
| 1091 cinfo->poolp, | |
| 1092 2 * sizeof(SEC_PKCS7RecipientInfo *)); | |
| 1093 } else { | |
| 1094 for (count = 0; recipientinfos[count] != NULL; count++) | |
| 1095 ; | |
| 1096 PORT_Assert (count); /* should be at least one already */ | |
| 1097 recipientinfos = (SEC_PKCS7RecipientInfo **)PORT_ArenaGrow ( | |
| 1098 cinfo->poolp, recipientinfos, | |
| 1099 (count + 1) * sizeof(SEC_PKCS7RecipientInfo *), | |
| 1100 (count + 2) * sizeof(SEC_PKCS7RecipientInfo *)); | |
| 1101 } | |
| 1102 | |
| 1103 if (recipientinfos == NULL) { | |
| 1104 PORT_ArenaRelease (cinfo->poolp, mark); | |
| 1105 return SECFailure; | |
| 1106 } | |
| 1107 | |
| 1108 recipientinfos[count] = recipientinfo; | |
| 1109 recipientinfos[count + 1] = NULL; | |
| 1110 | |
| 1111 *recipientinfosp = recipientinfos; | |
| 1112 | |
| 1113 PORT_ArenaUnmark (cinfo->poolp, mark); | |
| 1114 return SECSuccess; | |
| 1115 } | |
| 1116 | |
| 1117 | |
| 1118 /* | |
| 1119 * Start a PKCS7 enveloping context. | |
| 1120 * | |
| 1121 * "cert" is the cert for the recipient. It will be checked for validity. | |
| 1122 * | |
| 1123 * "certusage" describes the encryption usage (e.g. certUsageEmailRecipient) | |
| 1124 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 1125 * "email" and *we* add the "recipient" part -- otherwise our caller | |
| 1126 * could be lying about the usage; we do not want to allow encryption | |
| 1127 * certs for signing or vice versa. | |
| 1128 * | |
| 1129 * "certdb" is the cert database to use for verifying the cert. | |
| 1130 * It can be NULL if a default database is available (like in the client). | |
| 1131 * | |
| 1132 * "encalg" specifies the bulk encryption algorithm to use (e.g. SEC_OID_RC2). | |
| 1133 * | |
| 1134 * "keysize" specifies the bulk encryption key size, in bits. | |
| 1135 * | |
| 1136 * The return value can be passed to functions which add things to | |
| 1137 * it like more recipients, then eventually to SEC_PKCS7Encode() or to | |
| 1138 * SEC_PKCS7EncoderStart() to create the encoded data, and finally to | |
| 1139 * SEC_PKCS7DestroyContentInfo(). | |
| 1140 * | |
| 1141 * An error results in a return value of NULL and an error set. | |
| 1142 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1143 */ | |
| 1144 extern SEC_PKCS7ContentInfo * | |
| 1145 SEC_PKCS7CreateEnvelopedData (CERTCertificate *cert, | |
| 1146 SECCertUsage certusage, | |
| 1147 CERTCertDBHandle *certdb, | |
| 1148 SECOidTag encalg, | |
| 1149 int keysize, | |
| 1150 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 1151 { | |
| 1152 SEC_PKCS7ContentInfo *cinfo; | |
| 1153 SEC_PKCS7EnvelopedData *envd; | |
| 1154 SECStatus rv; | |
| 1155 | |
| 1156 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_ENVELOPED_DATA, | |
| 1157 PR_FALSE, pwfn, pwfn_arg); | |
| 1158 if (cinfo == NULL) | |
| 1159 return NULL; | |
| 1160 | |
| 1161 rv = sec_pkcs7_add_recipient (cinfo, cert, certusage, certdb); | |
| 1162 if (rv != SECSuccess) { | |
| 1163 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1164 return NULL; | |
| 1165 } | |
| 1166 | |
| 1167 envd = cinfo->content.envelopedData; | |
| 1168 PORT_Assert (envd != NULL); | |
| 1169 | |
| 1170 /* | |
| 1171 * XXX Might we want to allow content types other than data? | |
| 1172 * If so, via what interface? | |
| 1173 */ | |
| 1174 rv = sec_pkcs7_init_encrypted_content_info (&(envd->encContentInfo), | |
| 1175 cinfo->poolp, | |
| 1176 SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1177 encalg, keysize); | |
| 1178 if (rv != SECSuccess) { | |
| 1179 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1180 return NULL; | |
| 1181 } | |
| 1182 | |
| 1183 /* XXX Anything more to do here? */ | |
| 1184 | |
| 1185 return cinfo; | |
| 1186 } | |
| 1187 | |
| 1188 | |
| 1189 /* | |
| 1190 * Add another recipient to an encrypted message. | |
| 1191 * | |
| 1192 * "cinfo" should be of type envelopedData or signedAndEnvelopedData; | |
| 1193 * SECFailure will be returned if it is not. | |
| 1194 * | |
| 1195 * "cert" is the cert for the recipient. It will be checked for validity. | |
| 1196 * | |
| 1197 * "certusage" describes the encryption usage (e.g. certUsageEmailRecipient) | |
| 1198 * XXX Maybe SECCertUsage should be split so that our caller just says | |
| 1199 * "email" and *we* add the "recipient" part -- otherwise our caller | |
| 1200 * could be lying about the usage; we do not want to allow encryption | |
| 1201 * certs for signing or vice versa. | |
| 1202 * | |
| 1203 * "certdb" is the cert database to use for verifying the cert. | |
| 1204 * It can be NULL if a default database is available (like in the client). | |
| 1205 */ | |
| 1206 SECStatus | |
| 1207 SEC_PKCS7AddRecipient (SEC_PKCS7ContentInfo *cinfo, | |
| 1208 CERTCertificate *cert, | |
| 1209 SECCertUsage certusage, | |
| 1210 CERTCertDBHandle *certdb) | |
| 1211 { | |
| 1212 return sec_pkcs7_add_recipient (cinfo, cert, certusage, certdb); | |
| 1213 } | |
| 1214 | |
| 1215 | |
| 1216 /* | |
| 1217 * Create an empty PKCS7 data content info. | |
| 1218 * | |
| 1219 * An error results in a return value of NULL and an error set. | |
| 1220 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1221 */ | |
| 1222 SEC_PKCS7ContentInfo * | |
| 1223 SEC_PKCS7CreateData (void) | |
| 1224 { | |
| 1225 return sec_pkcs7_create_content_info (SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1226 NULL, NULL); | |
| 1227 } | |
| 1228 | |
| 1229 | |
| 1230 /* | |
| 1231 * Create an empty PKCS7 encrypted content info. | |
| 1232 * | |
| 1233 * "algorithm" specifies the bulk encryption algorithm to use. | |
| 1234 * | |
| 1235 * An error results in a return value of NULL and an error set. | |
| 1236 * (Retrieve specific errors via PORT_GetError()/XP_GetError().) | |
| 1237 */ | |
| 1238 SEC_PKCS7ContentInfo * | |
| 1239 SEC_PKCS7CreateEncryptedData (SECOidTag algorithm, int keysize, | |
| 1240 SECKEYGetPasswordKey pwfn, void *pwfn_arg) | |
| 1241 { | |
| 1242 SEC_PKCS7ContentInfo *cinfo; | |
| 1243 SECAlgorithmID *algid; | |
| 1244 SEC_PKCS7EncryptedData *enc_data; | |
| 1245 SECStatus rv; | |
| 1246 | |
| 1247 cinfo = sec_pkcs7_create_content_info (SEC_OID_PKCS7_ENCRYPTED_DATA, | |
| 1248 PR_FALSE, pwfn, pwfn_arg); | |
| 1249 if (cinfo == NULL) | |
| 1250 return NULL; | |
| 1251 | |
| 1252 enc_data = cinfo->content.encryptedData; | |
| 1253 algid = &(enc_data->encContentInfo.contentEncAlg); | |
| 1254 | |
| 1255 if (!SEC_PKCS5IsAlgorithmPBEAlgTag(algorithm)) { | |
| 1256 rv = SECOID_SetAlgorithmID (cinfo->poolp, algid, algorithm, NULL); | |
| 1257 } else { | |
| 1258 /* Assume password-based-encryption. | |
| 1259 * Note: we can't generate pkcs5v2 from this interface. | |
| 1260 * PK11_CreateBPEAlgorithmID generates pkcs5v2 by accepting | |
| 1261 * non-PBE oids and assuming that they are pkcs5v2 oids, but | |
| 1262 * NSS_CMSEncryptedData_Create accepts non-PBE oids as regular | |
| 1263 * CMS encrypted data, so we can't tell SEC_PKCS7CreateEncryptedtedData | |
| 1264 * to create pkcs5v2 PBEs */ | |
| 1265 SECAlgorithmID *pbe_algid; | |
| 1266 pbe_algid = PK11_CreatePBEAlgorithmID(algorithm, | |
| 1267 NSS_PBE_DEFAULT_ITERATION_COUNT, | |
| 1268 NULL); | |
| 1269 if (pbe_algid == NULL) { | |
| 1270 rv = SECFailure; | |
| 1271 } else { | |
| 1272 rv = SECOID_CopyAlgorithmID (cinfo->poolp, algid, pbe_algid); | |
| 1273 SECOID_DestroyAlgorithmID (pbe_algid, PR_TRUE); | |
| 1274 } | |
| 1275 } | |
| 1276 | |
| 1277 if (rv != SECSuccess) { | |
| 1278 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1279 return NULL; | |
| 1280 } | |
| 1281 | |
| 1282 rv = sec_pkcs7_init_encrypted_content_info (&(enc_data->encContentInfo), | |
| 1283 cinfo->poolp, | |
| 1284 SEC_OID_PKCS7_DATA, PR_FALSE, | |
| 1285 algorithm, keysize); | |
| 1286 if (rv != SECSuccess) { | |
| 1287 SEC_PKCS7DestroyContentInfo (cinfo); | |
| 1288 return NULL; | |
| 1289 } | |
| 1290 | |
| 1291 return cinfo; | |
| 1292 } | |
| 1293 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 14249009:
Change the NSS and NSPR source tree to the new directory structure to be (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/nss/