crypto/cms/cms_asn1.c

   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 <openssl/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         EVP_PKEY_free(si->pkey);
  97         if (si->signer)
  98             X509_free(si->signer);
  99         if (si->pctx)
 100             EVP_MD_CTX_cleanup(&si->mctx);
 101     }
 102     return 1;
 103 }
 104
 105 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
 106         ASN1_SIMPLE(CMS_SignerInfo, version, LONG),
 107         ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
 108         ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
 109         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
 110         ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
 111         ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
 112         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
 113 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
 114
 115 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
 116         ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
 117         ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
 118 } ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
 119
 120 ASN1_CHOICE(CMS_RevocationInfoChoice) = {
 121         ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
 122         ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
 123 } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
 124
 125 ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
 126         ASN1_SIMPLE(CMS_SignedData, version, LONG),
 127         ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
 128         ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 129         ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
 130         ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
 131         ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
 132 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
 133
 134 ASN1_SEQUENCE(CMS_OriginatorInfo) = {
 135         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
 136         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
 137 } ASN1_SEQUENCE_END(CMS_OriginatorInfo)
 138
 139 ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = {
 140         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
 141         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
 142         ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
 143 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo)
 144
 145 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
 146         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, version, LONG),
 147         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
 148         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 149         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 150 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
 151
 152 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
 153         ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
 154         ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
 155 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
 156
 157 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
 158         ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
 159         ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
 160         ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
 161 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
 162
 163 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
 164   ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 165   ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
 166 } ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
 167
 168 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 169                       void *exarg)
 170 {
 171     CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
 172     if (operation == ASN1_OP_FREE_POST) {
 173         EVP_PKEY_free(rek->pkey);
 174     }
 175     return 1;
 176 }
 177
 178 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
 179         ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
 180         ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
 181 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
 182
 183 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
 184   ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
 185   ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
 186 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
 187
 188 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
 189   ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 190   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
 191   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
 192 } ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
 193
 194 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 195                        void *exarg)
 196 {
 197     CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
 198     if (operation == ASN1_OP_NEW_POST) {
 199         EVP_CIPHER_CTX_init(&kari->ctx);
 200         EVP_CIPHER_CTX_set_flags(&kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
 201         kari->pctx = NULL;
 202     } else if (operation == ASN1_OP_FREE_POST) {
 203         EVP_PKEY_CTX_free(kari->pctx);
 204         EVP_CIPHER_CTX_cleanup(&kari->ctx);
 205     }
 206     return 1;
 207 }
 208
 209 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
 210         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, version, LONG),
 211         ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
 212         ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
 213         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 214         ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
 215 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
 216
 217 ASN1_SEQUENCE(CMS_KEKIdentifier) = {
 218         ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
 219         ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
 220         ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
 221 } ASN1_SEQUENCE_END(CMS_KEKIdentifier)
 222
 223 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
 224         ASN1_SIMPLE(CMS_KEKRecipientInfo, version, LONG),
 225         ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
 226         ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 227         ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 228 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
 229
 230 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
 231         ASN1_SIMPLE(CMS_PasswordRecipientInfo, version, LONG),
 232         ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
 233         ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 234         ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 235 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
 236
 237 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
 238   ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
 239   ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
 240 } ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
 241
 242 /* Free up RecipientInfo additional data */
 243 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 244                      void *exarg)
 245 {
 246     if (operation == ASN1_OP_FREE_PRE) {
 247         CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
 248         if (ri->type == CMS_RECIPINFO_TRANS) {
 249             CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
 250             EVP_PKEY_free(ktri->pkey);
 251             if (ktri->recip)
 252                 X509_free(ktri->recip);
 253             EVP_PKEY_CTX_free(ktri->pctx);
 254         } else if (ri->type == CMS_RECIPINFO_KEK) {
 255             CMS_KEKRecipientInfo *kekri = ri->d.kekri;
 256             if (kekri->key) {
 257                 OPENSSL_cleanse(kekri->key, kekri->keylen);
 258                 OPENSSL_free(kekri->key);
 259             }
 260         } else if (ri->type == CMS_RECIPINFO_PASS) {
 261             CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
 262             if (pwri->pass) {
 263                 OPENSSL_cleanse(pwri->pass, pwri->passlen);
 264                 OPENSSL_free(pwri->pass);
 265             }
 266         }
 267     }
 268     return 1;
 269 }
 270
 271 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
 272         ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
 273         ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
 274         ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
 275         ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
 276         ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
 277 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
 278
 279 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
 280         ASN1_SIMPLE(CMS_EnvelopedData, version, LONG),
 281         ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
 282         ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
 283         ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 284         ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 285 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
 286
 287 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
 288         ASN1_SIMPLE(CMS_DigestedData, version, LONG),
 289         ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
 290         ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 291         ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
 292 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
 293
 294 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
 295         ASN1_SIMPLE(CMS_EncryptedData, version, LONG),
 296         ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 297         ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 298 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
 299
 300 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
 301         ASN1_SIMPLE(CMS_AuthenticatedData, version, LONG),
 302         ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
 303         ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
 304         ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
 305         ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
 306         ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 307         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
 308         ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
 309         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
 310 } ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
 311
 312 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
 313         ASN1_SIMPLE(CMS_CompressedData, version, LONG),
 314         ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
 315         ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 316 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
 317
 318 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
 319
 320 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
 321
 322 ASN1_ADB(CMS_ContentInfo) = {
 323         ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
 324         ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
 325         ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
 326         ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
 327         ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
 328         ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
 329         ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
 330 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
 331
 332 /* CMS streaming support */
 333 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 334                   void *exarg)
 335 {
 336     ASN1_STREAM_ARG *sarg = exarg;
 337     CMS_ContentInfo *cms = NULL;
 338     if (pval)
 339         cms = (CMS_ContentInfo *)*pval;
 340     else
 341         return 1;
 342     switch (operation) {
 343
 344     case ASN1_OP_STREAM_PRE:
 345         if (CMS_stream(&sarg->boundary, cms) <= 0)
 346             return 0;
 347     case ASN1_OP_DETACHED_PRE:
 348         sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
 349         if (!sarg->ndef_bio)
 350             return 0;
 351         break;
 352
 353     case ASN1_OP_STREAM_POST:
 354     case ASN1_OP_DETACHED_POST:
 355         if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
 356             return 0;
 357         break;
 358
 359     }
 360     return 1;
 361 }
 362
 363 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
 364         ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
 365         ASN1_ADB_OBJECT(CMS_ContentInfo)
 366 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
 367
 368 /* Specials for signed attributes */
 369
 370 /*
 371  * When signing attributes we want to reorder them to match the sorted
 372  * encoding.
 373  */
 374
 375 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
 376         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 377 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
 378
 379 /*
 380  * When verifying attributes we need to use the received order. So we use
 381  * SEQUENCE OF and tag it to SET OF
 382  */
 383
 384 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
 385         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
 386                                 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 387 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
 388
 389
 390
 391 ASN1_CHOICE(CMS_ReceiptsFrom) = {
 392   ASN1_IMP(CMS_ReceiptsFrom, d.allOrFirstTier, LONG, 0),
 393   ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
 394 } ASN1_CHOICE_END(CMS_ReceiptsFrom)
 395
 396 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
 397   ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
 398   ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
 399   ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
 400 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
 401
 402 ASN1_SEQUENCE(CMS_Receipt) = {
 403   ASN1_SIMPLE(CMS_Receipt, version, LONG),
 404   ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
 405   ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
 406   ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
 407 } ASN1_SEQUENCE_END(CMS_Receipt)
 408
 409 /*
 410  * Utilities to encode the CMS_SharedInfo structure used during key
 411  * derivation.
 412  */
 413
 414 typedef struct {
 415     X509_ALGOR *keyInfo;
 416     ASN1_OCTET_STRING *entityUInfo;
 417     ASN1_OCTET_STRING *suppPubInfo;
 418 } CMS_SharedInfo;
 419
 420 ASN1_SEQUENCE(CMS_SharedInfo) = {
 421   ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
 422   ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
 423   ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
 424 } ASN1_SEQUENCE_END(CMS_SharedInfo)
 425
 426 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
 427                           ASN1_OCTET_STRING *ukm, int keylen)
 428 {
 429     union {
 430         CMS_SharedInfo *pecsi;
 431         ASN1_VALUE *a;
 432     } intsi = {
 433         NULL
 434     };
 435
 436     ASN1_OCTET_STRING oklen;
 437     unsigned char kl[4];
 438     CMS_SharedInfo ecsi;
 439
 440     keylen <<= 3;
 441     kl[0] = (keylen >> 24) & 0xff;
 442     kl[1] = (keylen >> 16) & 0xff;
 443     kl[2] = (keylen >> 8) & 0xff;
 444     kl[3] = keylen & 0xff;
 445     oklen.length = 4;
 446     oklen.data = kl;
 447     oklen.type = V_ASN1_OCTET_STRING;
 448     oklen.flags = 0;
 449     ecsi.keyInfo = kekalg;
 450     ecsi.entityUInfo = ukm;
 451     ecsi.suppPubInfo = &oklen;
 452     intsi.pecsi = &ecsi;
 453     return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
 454 }