1 /* crypto/cms/cms_asn1.c */ 2 /* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 4 * project. 5 */ 6 /* ==================================================================== 7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 */ 54 55 #include <openssl/asn1t.h> 56 #include <openssl/pem.h> 57 #include <openssl/x509v3.h> 58 #include "cms.h" 59 #include "cms_lcl.h" 60 61 62 ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = { 63 ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME), 64 ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER) 65 } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber) 66 67 ASN1_SEQUENCE(CMS_OtherCertificateFormat) = { 68 ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT), 69 ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY) 70 } ASN1_SEQUENCE_END(CMS_OtherCertificateFormat) 71 72 ASN1_CHOICE(CMS_CertificateChoices) = { 73 ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509), 74 ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0), 75 ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1), 76 ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2), 77 ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3) 78 } ASN1_CHOICE_END(CMS_CertificateChoices) 79 80 ASN1_CHOICE(CMS_SignerIdentifier) = { 81 ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), 82 ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0) 83 } ASN1_CHOICE_END(CMS_SignerIdentifier) 84 85 ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = { 86 ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT), 87 ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0) 88 } ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo) 89 90 /* Minor tweak to operation: free up signer key, cert */ 91 static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 92 void *exarg) 93 { 94 if (operation == ASN1_OP_FREE_POST) { 95 CMS_SignerInfo *si = (CMS_SignerInfo *)*pval; 96 if (si->pkey) 97 EVP_PKEY_free(si->pkey); 98 if (si->signer) 99 X509_free(si->signer); 100 if (si->pctx) 101 EVP_MD_CTX_cleanup(&si->mctx); 102 } 103 return 1; 104 } 105 106 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = { 107 ASN1_SIMPLE(CMS_SignerInfo, version, LONG), 108 ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier), 109 ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR), 110 ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0), 111 ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR), 112 ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING), 113 ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1) 114 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo) 115 116 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = { 117 ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT), 118 ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY) 119 } ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat) 120 121 ASN1_CHOICE(CMS_RevocationInfoChoice) = { 122 ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL), 123 ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1) 124 } ASN1_CHOICE_END(CMS_RevocationInfoChoice) 125 126 ASN1_NDEF_SEQUENCE(CMS_SignedData) = { 127 ASN1_SIMPLE(CMS_SignedData, version, LONG), 128 ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR), 129 ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo), 130 ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0), 131 ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1), 132 ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo) 133 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData) 134 135 ASN1_SEQUENCE(CMS_OriginatorInfo) = { 136 ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0), 137 ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1) 138 } ASN1_SEQUENCE_END(CMS_OriginatorInfo) 139 140 ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = { 141 ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT), 142 ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR), 143 ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0) 144 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo) 145 146 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = { 147 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, version, LONG), 148 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier), 149 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), 150 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING) 151 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo) 152 153 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = { 154 ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT), 155 ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY) 156 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute) 157 158 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = { 159 ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING), 160 ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME), 161 ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute) 162 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier) 163 164 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = { 165 ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), 166 ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0) 167 } ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier) 168 169 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 170 void *exarg) 171 { 172 CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval; 173 if (operation == ASN1_OP_FREE_POST) { 174 if (rek->pkey) 175 EVP_PKEY_free(rek->pkey); 176 } 177 return 1; 178 } 179 180 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = { 181 ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier), 182 ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING) 183 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey) 184 185 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = { 186 ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR), 187 ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING) 188 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey) 189 190 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = { 191 ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), 192 ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0), 193 ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1) 194 } ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey) 195 196 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 197 void *exarg) 198 { 199 CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval; 200 if (operation == ASN1_OP_NEW_POST) { 201 EVP_CIPHER_CTX_init(&kari->ctx); 202 EVP_CIPHER_CTX_set_flags(&kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW); 203 kari->pctx = NULL; 204 } else if (operation == ASN1_OP_FREE_POST) { 205 if (kari->pctx) 206 EVP_PKEY_CTX_free(kari->pctx); 207 EVP_CIPHER_CTX_cleanup(&kari->ctx); 208 } 209 return 1; 210 } 211 212 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = { 213 ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, version, LONG), 214 ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0), 215 ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1), 216 ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), 217 ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey) 218 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo) 219 220 ASN1_SEQUENCE(CMS_KEKIdentifier) = { 221 ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING), 222 ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME), 223 ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute) 224 } ASN1_SEQUENCE_END(CMS_KEKIdentifier) 225 226 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = { 227 ASN1_SIMPLE(CMS_KEKRecipientInfo, version, LONG), 228 ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier), 229 ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), 230 ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING) 231 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo) 232 233 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = { 234 ASN1_SIMPLE(CMS_PasswordRecipientInfo, version, LONG), 235 ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0), 236 ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), 237 ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING) 238 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo) 239 240 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = { 241 ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT), 242 ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY) 243 } ASN1_SEQUENCE_END(CMS_OtherRecipientInfo) 244 245 /* Free up RecipientInfo additional data */ 246 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 247 void *exarg) 248 { 249 if (operation == ASN1_OP_FREE_PRE) { 250 CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval; 251 if (ri->type == CMS_RECIPINFO_TRANS) { 252 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri; 253 if (ktri->pkey) 254 EVP_PKEY_free(ktri->pkey); 255 if (ktri->recip) 256 X509_free(ktri->recip); 257 if (ktri->pctx) 258 EVP_PKEY_CTX_free(ktri->pctx); 259 } else if (ri->type == CMS_RECIPINFO_KEK) { 260 CMS_KEKRecipientInfo *kekri = ri->d.kekri; 261 if (kekri->key) { 262 OPENSSL_cleanse(kekri->key, kekri->keylen); 263 OPENSSL_free(kekri->key); 264 } 265 } else if (ri->type == CMS_RECIPINFO_PASS) { 266 CMS_PasswordRecipientInfo *pwri = ri->d.pwri; 267 if (pwri->pass) { 268 OPENSSL_cleanse(pwri->pass, pwri->passlen); 269 OPENSSL_free(pwri->pass); 270 } 271 } 272 } 273 return 1; 274 } 275 276 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = { 277 ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo), 278 ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1), 279 ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2), 280 ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3), 281 ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4) 282 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type) 283 284 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = { 285 ASN1_SIMPLE(CMS_EnvelopedData, version, LONG), 286 ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0), 287 ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo), 288 ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo), 289 ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1) 290 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData) 291 292 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = { 293 ASN1_SIMPLE(CMS_DigestedData, version, LONG), 294 ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR), 295 ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo), 296 ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING) 297 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData) 298 299 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = { 300 ASN1_SIMPLE(CMS_EncryptedData, version, LONG), 301 ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo), 302 ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1) 303 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData) 304 305 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = { 306 ASN1_SIMPLE(CMS_AuthenticatedData, version, LONG), 307 ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0), 308 ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo), 309 ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR), 310 ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1), 311 ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo), 312 ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2), 313 ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING), 314 ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3) 315 } ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData) 316 317 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = { 318 ASN1_SIMPLE(CMS_CompressedData, version, LONG), 319 ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR), 320 ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo), 321 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData) 322 323 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */ 324 325 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0); 326 327 ASN1_ADB(CMS_ContentInfo) = { 328 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)), 329 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)), 330 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)), 331 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)), 332 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)), 333 ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)), 334 ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)), 335 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL); 336 337 /* CMS streaming support */ 338 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 339 void *exarg) 340 { 341 ASN1_STREAM_ARG *sarg = exarg; 342 CMS_ContentInfo *cms = NULL; 343 if (pval) 344 cms = (CMS_ContentInfo *)*pval; 345 else 346 return 1; 347 switch (operation) { 348 349 case ASN1_OP_STREAM_PRE: 350 if (CMS_stream(&sarg->boundary, cms) <= 0) 351 return 0; 352 case ASN1_OP_DETACHED_PRE: 353 sarg->ndef_bio = CMS_dataInit(cms, sarg->out); 354 if (!sarg->ndef_bio) 355 return 0; 356 break; 357 358 case ASN1_OP_STREAM_POST: 359 case ASN1_OP_DETACHED_POST: 360 if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0) 361 return 0; 362 break; 363 364 } 365 return 1; 366 } 367 368 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = { 369 ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT), 370 ASN1_ADB_OBJECT(CMS_ContentInfo) 371 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo) 372 373 /* Specials for signed attributes */ 374 375 /* 376 * When signing attributes we want to reorder them to match the sorted 377 * encoding. 378 */ 379 380 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) = 381 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE) 382 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign) 383 384 /* 385 * When verifying attributes we need to use the received order. So we use 386 * SEQUENCE OF and tag it to SET OF 387 */ 388 389 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) = 390 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, 391 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE) 392 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify) 393 394 395 396 ASN1_CHOICE(CMS_ReceiptsFrom) = { 397 ASN1_IMP(CMS_ReceiptsFrom, d.allOrFirstTier, LONG, 0), 398 ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1) 399 } ASN1_CHOICE_END(CMS_ReceiptsFrom) 400 401 ASN1_SEQUENCE(CMS_ReceiptRequest) = { 402 ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING), 403 ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom), 404 ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES) 405 } ASN1_SEQUENCE_END(CMS_ReceiptRequest) 406 407 ASN1_SEQUENCE(CMS_Receipt) = { 408 ASN1_SIMPLE(CMS_Receipt, version, LONG), 409 ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT), 410 ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING), 411 ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING) 412 } ASN1_SEQUENCE_END(CMS_Receipt) 413 414 /* 415 * Utilities to encode the CMS_SharedInfo structure used during key 416 * derivation. 417 */ 418 419 typedef struct { 420 X509_ALGOR *keyInfo; 421 ASN1_OCTET_STRING *entityUInfo; 422 ASN1_OCTET_STRING *suppPubInfo; 423 } CMS_SharedInfo; 424 425 ASN1_SEQUENCE(CMS_SharedInfo) = { 426 ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR), 427 ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0), 428 ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2), 429 } ASN1_SEQUENCE_END(CMS_SharedInfo) 430 431 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg, 432 ASN1_OCTET_STRING *ukm, int keylen) 433 { 434 union { 435 CMS_SharedInfo *pecsi; 436 ASN1_VALUE *a; 437 } intsi = { 438 NULL 439 }; 440 441 ASN1_OCTET_STRING oklen; 442 unsigned char kl[4]; 443 CMS_SharedInfo ecsi; 444 445 keylen <<= 3; 446 kl[0] = (keylen >> 24) & 0xff; 447 kl[1] = (keylen >> 16) & 0xff; 448 kl[2] = (keylen >> 8) & 0xff; 449 kl[3] = keylen & 0xff; 450 oklen.length = 4; 451 oklen.data = kl; 452 oklen.type = V_ASN1_OCTET_STRING; 453 oklen.flags = 0; 454 ecsi.keyInfo = kekalg; 455 ecsi.entityUInfo = ukm; 456 ecsi.suppPubInfo = &oklen; 457 intsi.pecsi = &ecsi; 458 return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo)); 459 } 460