crypto/cms/cms_asn1.c

   1 /* crypto/cms/cms_asn1.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  */
  53
  54 #include <openssl/asn1t.h>
  55 #include <openssl/pem.h>
  56 #include <openssl/x509v3.h>
  57 #include "cms.h"
  58 #include "cms_lcl.h"
  59
  60
  61 ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = {
  62         ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME),
  63         ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER)
  64 } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber)
  65
  66 ASN1_SEQUENCE(CMS_OtherCertificateFormat) = {
  67         ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT),
  68         ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY)
  69 } ASN1_SEQUENCE_END(CMS_OtherCertificateFormat)
  70
  71 ASN1_CHOICE(CMS_CertificateChoices) = {
  72         ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509),
  73         ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0),
  74         ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1),
  75         ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2),
  76         ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3)
  77 } ASN1_CHOICE_END(CMS_CertificateChoices)
  78
  79 ASN1_CHOICE(CMS_SignerIdentifier) = {
  80         ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
  81         ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0)
  82 } ASN1_CHOICE_END(CMS_SignerIdentifier)
  83
  84 ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = {
  85         ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT),
  86         ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0)
  87 } ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo)
  88
  89 /* Minor tweak to operation: free up signer key, cert */
  90 static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  91                                                         void *exarg)
  92         {
  93         if(operation == ASN1_OP_FREE_POST)
  94                 {
  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                 {
 175                 if (rek->pkey)
 176                         EVP_PKEY_free(rek->pkey);
 177                 }
 178         return 1;
 179         }
 180
 181 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
 182         ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
 183         ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
 184 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
 185
 186 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
 187   ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
 188   ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
 189 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
 190
 191 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
 192   ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 193   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
 194   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
 195 } ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
 196
 197 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 198                                                         void *exarg)
 199         {
 200         CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
 201         if(operation == ASN1_OP_NEW_POST)
 202                 {
 203                 EVP_CIPHER_CTX_init(&kari->ctx);
 204                 EVP_CIPHER_CTX_set_flags(&kari->ctx,
 205                                         EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
 206                 kari->pctx = NULL;
 207                 }
 208         else if(operation == ASN1_OP_FREE_POST)
 209                 {
 210                 if (kari->pctx)
 211                         EVP_PKEY_CTX_free(kari->pctx);
 212                 EVP_CIPHER_CTX_cleanup(&kari->ctx);
 213                 }
 214         return 1;
 215         }
 216
 217 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
 218         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, version, LONG),
 219         ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
 220         ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
 221         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 222         ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
 223 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
 224
 225 ASN1_SEQUENCE(CMS_KEKIdentifier) = {
 226         ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
 227         ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
 228         ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
 229 } ASN1_SEQUENCE_END(CMS_KEKIdentifier)
 230
 231 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
 232         ASN1_SIMPLE(CMS_KEKRecipientInfo, version, LONG),
 233         ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
 234         ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 235         ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 236 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
 237
 238 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
 239         ASN1_SIMPLE(CMS_PasswordRecipientInfo, version, LONG),
 240         ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
 241         ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 242         ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 243 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
 244
 245 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
 246   ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
 247   ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
 248 } ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
 249
 250 /* Free up RecipientInfo additional data */
 251 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 252                                                         void *exarg)
 253         {
 254         if(operation == ASN1_OP_FREE_PRE)
 255                 {
 256                 CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
 257                 if (ri->type == CMS_RECIPINFO_TRANS)
 258                         {
 259                         CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
 260                         if (ktri->pkey)
 261                                 EVP_PKEY_free(ktri->pkey);
 262                         if (ktri->recip)
 263                                 X509_free(ktri->recip);
 264                         if (ktri->pctx)
 265                                 EVP_PKEY_CTX_free(ktri->pctx);
 266                         }
 267                 else if (ri->type == CMS_RECIPINFO_KEK)
 268                         {
 269                         CMS_KEKRecipientInfo *kekri = ri->d.kekri;
 270                         if (kekri->key)
 271                                 {
 272                                 OPENSSL_cleanse(kekri->key, kekri->keylen);
 273                                 OPENSSL_free(kekri->key);
 274                                 }
 275                         }
 276                 else if (ri->type == CMS_RECIPINFO_PASS)
 277                         {
 278                         CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
 279                         if (pwri->pass)
 280                                 {
 281                                 OPENSSL_cleanse(pwri->pass, pwri->passlen);
 282                                 OPENSSL_free(pwri->pass);
 283                                 }
 284                         }
 285                 }
 286         return 1;
 287         }
 288
 289 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
 290         ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
 291         ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
 292         ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
 293         ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
 294         ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
 295 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
 296
 297 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
 298         ASN1_SIMPLE(CMS_EnvelopedData, version, LONG),
 299         ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
 300         ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
 301         ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 302         ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 303 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
 304
 305 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
 306         ASN1_SIMPLE(CMS_DigestedData, version, LONG),
 307         ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
 308         ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 309         ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
 310 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
 311
 312 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
 313         ASN1_SIMPLE(CMS_EncryptedData, version, LONG),
 314         ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 315         ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 316 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
 317
 318 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
 319         ASN1_SIMPLE(CMS_AuthenticatedData, version, LONG),
 320         ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
 321         ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
 322         ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
 323         ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
 324         ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 325         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
 326         ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
 327         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
 328 } ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
 329
 330 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
 331         ASN1_SIMPLE(CMS_CompressedData, version, LONG),
 332         ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
 333         ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 334 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
 335
 336 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
 337
 338 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
 339
 340 ASN1_ADB(CMS_ContentInfo) = {
 341         ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
 342         ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
 343         ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
 344         ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
 345         ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
 346         ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
 347         ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
 348 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
 349
 350 /* CMS streaming support */
 351 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 352                                                         void *exarg)
 353         {
 354         ASN1_STREAM_ARG *sarg = exarg;
 355         CMS_ContentInfo *cms = NULL;
 356         if (pval)
 357                 cms = (CMS_ContentInfo *)*pval;
 358         else
 359                 return 1;
 360         switch(operation)
 361                 {
 362
 363                 case ASN1_OP_STREAM_PRE:
 364                 if (CMS_stream(&sarg->boundary, cms) <= 0)
 365                         return 0;
 366                 case ASN1_OP_DETACHED_PRE:
 367                 sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
 368                 if (!sarg->ndef_bio)
 369                         return 0;
 370                 break;
 371
 372                 case ASN1_OP_STREAM_POST:
 373                 case ASN1_OP_DETACHED_POST:
 374                 if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
 375                         return 0;
 376                 break;
 377
 378                 }
 379         return 1;
 380         }
 381
 382 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
 383         ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
 384         ASN1_ADB_OBJECT(CMS_ContentInfo)
 385 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
 386
 387 /* Specials for signed attributes */
 388
 389 /* When signing attributes we want to reorder them to match the sorted
 390  * encoding.
 391  */
 392
 393 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
 394         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 395 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
 396
 397 /* When verifying attributes we need to use the received order. So
 398  * we use SEQUENCE OF and tag it to SET OF
 399  */
 400
 401 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
 402         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
 403                                 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 404 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
 405
 406
 407
 408 ASN1_CHOICE(CMS_ReceiptsFrom) = {
 409   ASN1_IMP(CMS_ReceiptsFrom, d.allOrFirstTier, LONG, 0),
 410   ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
 411 } ASN1_CHOICE_END(CMS_ReceiptsFrom)
 412
 413 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
 414   ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
 415   ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
 416   ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
 417 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
 418
 419 ASN1_SEQUENCE(CMS_Receipt) = {
 420   ASN1_SIMPLE(CMS_Receipt, version, LONG),
 421   ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
 422   ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
 423   ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
 424 } ASN1_SEQUENCE_END(CMS_Receipt)
 425
 426 /* Utilities to encode the CMS_SharedInfo structure used during key
 427  * derivation.
 428  */
 429
 430 typedef struct {
 431         X509_ALGOR *keyInfo;
 432         ASN1_OCTET_STRING *entityUInfo;
 433         ASN1_OCTET_STRING *suppPubInfo;
 434 } CMS_SharedInfo;
 435
 436 ASN1_SEQUENCE(CMS_SharedInfo) = {
 437   ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
 438   ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
 439   ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
 440 } ASN1_SEQUENCE_END(CMS_SharedInfo)
 441
 442 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
 443                         ASN1_OCTET_STRING *ukm, int keylen)
 444         {
 445         union {
 446                 CMS_SharedInfo *pecsi;
 447                 ASN1_VALUE *a;
 448         } intsi = {NULL};
 449
 450         ASN1_OCTET_STRING oklen;
 451         unsigned char kl[4];
 452         CMS_SharedInfo ecsi;
 453
 454         keylen <<= 3;
 455         kl[0] = (keylen >> 24) & 0xff;
 456         kl[1] = (keylen >> 16) & 0xff;
 457         kl[2] = (keylen >> 8) & 0xff;
 458         kl[3] = keylen & 0xff;
 459         oklen.length = 4;
 460         oklen.data = kl;
 461         oklen.type = V_ASN1_OCTET_STRING;
 462         oklen.flags = 0;
 463         ecsi.keyInfo = kekalg;
 464         ecsi.entityUInfo = ukm;
 465         ecsi.suppPubInfo = &oklen;
 466         intsi.pecsi = &ecsi;
 467         return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
 468         }