crypto/cms/cms_asn1.c

   1 /*
   2  * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/asn1t.h>
  11 #include <openssl/pem.h>
  12 #include <openssl/x509v3.h>
  13 #include <openssl/cms.h>
  14 #include "cms_lcl.h"
  15
  16
  17 ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = {
  18         ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME),
  19         ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER)
  20 } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber)
  21
  22 ASN1_SEQUENCE(CMS_OtherCertificateFormat) = {
  23         ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT),
  24         ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY)
  25 } static_ASN1_SEQUENCE_END(CMS_OtherCertificateFormat)
  26
  27 ASN1_CHOICE(CMS_CertificateChoices) = {
  28         ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509),
  29         ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0),
  30         ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1),
  31         ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2),
  32         ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3)
  33 } ASN1_CHOICE_END(CMS_CertificateChoices)
  34
  35 ASN1_CHOICE(CMS_SignerIdentifier) = {
  36         ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
  37         ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0)
  38 } static_ASN1_CHOICE_END(CMS_SignerIdentifier)
  39
  40 ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = {
  41         ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT),
  42         ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0)
  43 } static_ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo)
  44
  45 /* Minor tweak to operation: free up signer key, cert */
  46 static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  47                      void *exarg)
  48 {
  49     if (operation == ASN1_OP_FREE_POST) {
  50         CMS_SignerInfo *si = (CMS_SignerInfo *)*pval;
  51         EVP_PKEY_free(si->pkey);
  52         X509_free(si->signer);
  53         EVP_MD_CTX_free(si->mctx);
  54     }
  55     return 1;
  56 }
  57
  58 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
  59         ASN1_EMBED(CMS_SignerInfo, version, INT32),
  60         ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
  61         ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
  62         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
  63         ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
  64         ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
  65         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
  66 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
  67
  68 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
  69         ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
  70         ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
  71 } static_ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
  72
  73 ASN1_CHOICE(CMS_RevocationInfoChoice) = {
  74         ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
  75         ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
  76 } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
  77
  78 ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
  79         ASN1_EMBED(CMS_SignedData, version, INT32),
  80         ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
  81         ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
  82         ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
  83         ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
  84         ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
  85 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
  86
  87 ASN1_SEQUENCE(CMS_OriginatorInfo) = {
  88         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
  89         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
  90 } static_ASN1_SEQUENCE_END(CMS_OriginatorInfo)
  91
  92 ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = {
  93         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
  94         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
  95         ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
  96 } static_ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo)
  97
  98 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
  99         ASN1_EMBED(CMS_KeyTransRecipientInfo, version, INT32),
 100         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
 101         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 102         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 103 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
 104
 105 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
 106         ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
 107         ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
 108 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
 109
 110 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
 111         ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
 112         ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
 113         ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
 114 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
 115
 116 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
 117   ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 118   ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
 119 } static_ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
 120
 121 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 122                       void *exarg)
 123 {
 124     CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
 125     if (operation == ASN1_OP_FREE_POST) {
 126         EVP_PKEY_free(rek->pkey);
 127     }
 128     return 1;
 129 }
 130
 131 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
 132         ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
 133         ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
 134 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
 135
 136 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
 137   ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
 138   ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
 139 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
 140
 141 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
 142   ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 143   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
 144   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
 145 } static_ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
 146
 147 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 148                        void *exarg)
 149 {
 150     CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
 151     if (operation == ASN1_OP_NEW_POST) {
 152         kari->ctx = EVP_CIPHER_CTX_new();
 153         if (kari->ctx == NULL)
 154             return 0;
 155         EVP_CIPHER_CTX_set_flags(kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
 156         kari->pctx = NULL;
 157     } else if (operation == ASN1_OP_FREE_POST) {
 158         EVP_PKEY_CTX_free(kari->pctx);
 159         EVP_CIPHER_CTX_free(kari->ctx);
 160     }
 161     return 1;
 162 }
 163
 164 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
 165         ASN1_EMBED(CMS_KeyAgreeRecipientInfo, version, INT32),
 166         ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
 167         ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
 168         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 169         ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
 170 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
 171
 172 ASN1_SEQUENCE(CMS_KEKIdentifier) = {
 173         ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
 174         ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
 175         ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
 176 } static_ASN1_SEQUENCE_END(CMS_KEKIdentifier)
 177
 178 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
 179         ASN1_EMBED(CMS_KEKRecipientInfo, version, INT32),
 180         ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
 181         ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 182         ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 183 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
 184
 185 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
 186         ASN1_EMBED(CMS_PasswordRecipientInfo, version, INT32),
 187         ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
 188         ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 189         ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 190 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
 191
 192 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
 193   ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
 194   ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
 195 } static_ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
 196
 197 /* Free up RecipientInfo additional data */
 198 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 199                      void *exarg)
 200 {
 201     if (operation == ASN1_OP_FREE_PRE) {
 202         CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
 203         if (ri->type == CMS_RECIPINFO_TRANS) {
 204             CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
 205             EVP_PKEY_free(ktri->pkey);
 206             X509_free(ktri->recip);
 207             EVP_PKEY_CTX_free(ktri->pctx);
 208         } else if (ri->type == CMS_RECIPINFO_KEK) {
 209             CMS_KEKRecipientInfo *kekri = ri->d.kekri;
 210             OPENSSL_clear_free(kekri->key, kekri->keylen);
 211         } else if (ri->type == CMS_RECIPINFO_PASS) {
 212             CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
 213             OPENSSL_clear_free(pwri->pass, pwri->passlen);
 214         }
 215     }
 216     return 1;
 217 }
 218
 219 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
 220         ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
 221         ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
 222         ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
 223         ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
 224         ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
 225 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
 226
 227 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
 228         ASN1_EMBED(CMS_EnvelopedData, version, INT32),
 229         ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
 230         ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
 231         ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 232         ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 233 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
 234
 235 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
 236         ASN1_EMBED(CMS_DigestedData, version, INT32),
 237         ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
 238         ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 239         ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
 240 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
 241
 242 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
 243         ASN1_EMBED(CMS_EncryptedData, version, INT32),
 244         ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 245         ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 246 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
 247
 248 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
 249         ASN1_EMBED(CMS_AuthenticatedData, version, INT32),
 250         ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
 251         ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
 252         ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
 253         ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
 254         ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 255         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
 256         ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
 257         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
 258 } static_ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
 259
 260 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
 261         ASN1_EMBED(CMS_CompressedData, version, INT32),
 262         ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
 263         ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 264 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
 265
 266 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
 267
 268 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
 269
 270 ASN1_ADB(CMS_ContentInfo) = {
 271         ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
 272         ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
 273         ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
 274         ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
 275         ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
 276         ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
 277         ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
 278 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
 279
 280 /* CMS streaming support */
 281 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 282                   void *exarg)
 283 {
 284     ASN1_STREAM_ARG *sarg = exarg;
 285     CMS_ContentInfo *cms = NULL;
 286     if (pval)
 287         cms = (CMS_ContentInfo *)*pval;
 288     else
 289         return 1;
 290     switch (operation) {
 291
 292     case ASN1_OP_STREAM_PRE:
 293         if (CMS_stream(&sarg->boundary, cms) <= 0)
 294             return 0;
 295     case ASN1_OP_DETACHED_PRE:
 296         sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
 297         if (!sarg->ndef_bio)
 298             return 0;
 299         break;
 300
 301     case ASN1_OP_STREAM_POST:
 302     case ASN1_OP_DETACHED_POST:
 303         if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
 304             return 0;
 305         break;
 306
 307     }
 308     return 1;
 309 }
 310
 311 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
 312         ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
 313         ASN1_ADB_OBJECT(CMS_ContentInfo)
 314 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
 315
 316 /* Specials for signed attributes */
 317
 318 /*
 319  * When signing attributes we want to reorder them to match the sorted
 320  * encoding.
 321  */
 322
 323 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
 324         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 325 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
 326
 327 /*
 328  * When verifying attributes we need to use the received order. So we use
 329  * SEQUENCE OF and tag it to SET OF
 330  */
 331
 332 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
 333         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
 334                                 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 335 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
 336
 337
 338
 339 ASN1_CHOICE(CMS_ReceiptsFrom) = {
 340   ASN1_IMP_EMBED(CMS_ReceiptsFrom, d.allOrFirstTier, INT32, 0),
 341   ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
 342 } static_ASN1_CHOICE_END(CMS_ReceiptsFrom)
 343
 344 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
 345   ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
 346   ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
 347   ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
 348 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
 349
 350 ASN1_SEQUENCE(CMS_Receipt) = {
 351   ASN1_EMBED(CMS_Receipt, version, INT32),
 352   ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
 353   ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
 354   ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
 355 } ASN1_SEQUENCE_END(CMS_Receipt)
 356
 357 /*
 358  * Utilities to encode the CMS_SharedInfo structure used during key
 359  * derivation.
 360  */
 361
 362 typedef struct {
 363     X509_ALGOR *keyInfo;
 364     ASN1_OCTET_STRING *entityUInfo;
 365     ASN1_OCTET_STRING *suppPubInfo;
 366 } CMS_SharedInfo;
 367
 368 ASN1_SEQUENCE(CMS_SharedInfo) = {
 369   ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
 370   ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
 371   ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
 372 } static_ASN1_SEQUENCE_END(CMS_SharedInfo)
 373
 374 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
 375                           ASN1_OCTET_STRING *ukm, int keylen)
 376 {
 377     union {
 378         CMS_SharedInfo *pecsi;
 379         ASN1_VALUE *a;
 380     } intsi = {
 381         NULL
 382     };
 383
 384     ASN1_OCTET_STRING oklen;
 385     unsigned char kl[4];
 386     CMS_SharedInfo ecsi;
 387
 388     keylen <<= 3;
 389     kl[0] = (keylen >> 24) & 0xff;
 390     kl[1] = (keylen >> 16) & 0xff;
 391     kl[2] = (keylen >> 8) & 0xff;
 392     kl[3] = keylen & 0xff;
 393     oklen.length = 4;
 394     oklen.data = kl;
 395     oklen.type = V_ASN1_OCTET_STRING;
 396     oklen.flags = 0;
 397     ecsi.keyInfo = kekalg;
 398     ecsi.entityUInfo = ukm;
 399     ecsi.suppPubInfo = &oklen;
 400     intsi.pecsi = &ecsi;
 401     return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
 402 }