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 } static_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 } static_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 } static_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         X509_free(si->signer);
  98         EVP_MD_CTX_free(si->mctx);
  99     }
 100     return 1;
 101 }
 102
 103 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
 104         ASN1_SIMPLE(CMS_SignerInfo, version, LONG),
 105         ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
 106         ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
 107         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
 108         ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
 109         ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
 110         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
 111 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
 112
 113 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
 114         ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
 115         ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
 116 } static_ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
 117
 118 ASN1_CHOICE(CMS_RevocationInfoChoice) = {
 119         ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
 120         ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
 121 } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
 122
 123 ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
 124         ASN1_SIMPLE(CMS_SignedData, version, LONG),
 125         ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
 126         ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 127         ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
 128         ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
 129         ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
 130 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
 131
 132 ASN1_SEQUENCE(CMS_OriginatorInfo) = {
 133         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
 134         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
 135 } static_ASN1_SEQUENCE_END(CMS_OriginatorInfo)
 136
 137 ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = {
 138         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
 139         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
 140         ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
 141 } static_ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo)
 142
 143 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
 144         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, version, LONG),
 145         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
 146         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
 147         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
 148 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
 149
 150 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
 151         ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
 152         ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
 153 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
 154
 155 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
 156         ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
 157         ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
 158         ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
 159 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
 160
 161 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
 162   ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 163   ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
 164 } static_ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
 165
 166 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 167                       void *exarg)
 168 {
 169     CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
 170     if (operation == ASN1_OP_FREE_POST) {
 171         EVP_PKEY_free(rek->pkey);
 172     }
 173     return 1;
 174 }
 175
 176 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
 177         ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
 178         ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
 179 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
 180
 181 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
 182   ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
 183   ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
 184 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
 185
 186 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
 187   ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
 188   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
 189   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
 190 } static_ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
 191
 192 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 193                        void *exarg)
 194 {
 195     CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
 196     if (operation == ASN1_OP_NEW_POST) {
 197         kari->ctx = EVP_CIPHER_CTX_new();
 198         if (kari->ctx == NULL)
 199             return 0;
 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_free(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 } static_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 } static_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             X509_free(ktri->recip);
 252             EVP_PKEY_CTX_free(ktri->pctx);
 253         } else if (ri->type == CMS_RECIPINFO_KEK) {
 254             CMS_KEKRecipientInfo *kekri = ri->d.kekri;
 255             OPENSSL_clear_free(kekri->key, kekri->keylen);
 256         } else if (ri->type == CMS_RECIPINFO_PASS) {
 257             CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
 258             OPENSSL_clear_free(pwri->pass, pwri->passlen);
 259         }
 260     }
 261     return 1;
 262 }
 263
 264 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
 265         ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
 266         ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
 267         ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
 268         ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
 269         ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
 270 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
 271
 272 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
 273         ASN1_SIMPLE(CMS_EnvelopedData, version, LONG),
 274         ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
 275         ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
 276         ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 277         ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 278 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
 279
 280 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
 281         ASN1_SIMPLE(CMS_DigestedData, version, LONG),
 282         ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
 283         ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 284         ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
 285 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
 286
 287 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
 288         ASN1_SIMPLE(CMS_EncryptedData, version, LONG),
 289         ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
 290         ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
 291 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
 292
 293 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
 294         ASN1_SIMPLE(CMS_AuthenticatedData, version, LONG),
 295         ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
 296         ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
 297         ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
 298         ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
 299         ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 300         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
 301         ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
 302         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
 303 } static_ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
 304
 305 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
 306         ASN1_SIMPLE(CMS_CompressedData, version, LONG),
 307         ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
 308         ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
 309 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
 310
 311 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
 312
 313 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
 314
 315 ASN1_ADB(CMS_ContentInfo) = {
 316         ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
 317         ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
 318         ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
 319         ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
 320         ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
 321         ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
 322         ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
 323 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
 324
 325 /* CMS streaming support */
 326 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 327                   void *exarg)
 328 {
 329     ASN1_STREAM_ARG *sarg = exarg;
 330     CMS_ContentInfo *cms = NULL;
 331     if (pval)
 332         cms = (CMS_ContentInfo *)*pval;
 333     else
 334         return 1;
 335     switch (operation) {
 336
 337     case ASN1_OP_STREAM_PRE:
 338         if (CMS_stream(&sarg->boundary, cms) <= 0)
 339             return 0;
 340     case ASN1_OP_DETACHED_PRE:
 341         sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
 342         if (!sarg->ndef_bio)
 343             return 0;
 344         break;
 345
 346     case ASN1_OP_STREAM_POST:
 347     case ASN1_OP_DETACHED_POST:
 348         if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
 349             return 0;
 350         break;
 351
 352     }
 353     return 1;
 354 }
 355
 356 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
 357         ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
 358         ASN1_ADB_OBJECT(CMS_ContentInfo)
 359 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
 360
 361 /* Specials for signed attributes */
 362
 363 /*
 364  * When signing attributes we want to reorder them to match the sorted
 365  * encoding.
 366  */
 367
 368 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
 369         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 370 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
 371
 372 /*
 373  * When verifying attributes we need to use the received order. So we use
 374  * SEQUENCE OF and tag it to SET OF
 375  */
 376
 377 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
 378         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
 379                                 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
 380 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
 381
 382
 383
 384 ASN1_CHOICE(CMS_ReceiptsFrom) = {
 385   ASN1_IMP(CMS_ReceiptsFrom, d.allOrFirstTier, LONG, 0),
 386   ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
 387 } static_ASN1_CHOICE_END(CMS_ReceiptsFrom)
 388
 389 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
 390   ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
 391   ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
 392   ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
 393 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
 394
 395 ASN1_SEQUENCE(CMS_Receipt) = {
 396   ASN1_SIMPLE(CMS_Receipt, version, LONG),
 397   ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
 398   ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
 399   ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
 400 } ASN1_SEQUENCE_END(CMS_Receipt)
 401
 402 /*
 403  * Utilities to encode the CMS_SharedInfo structure used during key
 404  * derivation.
 405  */
 406
 407 typedef struct {
 408     X509_ALGOR *keyInfo;
 409     ASN1_OCTET_STRING *entityUInfo;
 410     ASN1_OCTET_STRING *suppPubInfo;
 411 } CMS_SharedInfo;
 412
 413 ASN1_SEQUENCE(CMS_SharedInfo) = {
 414   ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
 415   ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
 416   ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
 417 } static_ASN1_SEQUENCE_END(CMS_SharedInfo)
 418
 419 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
 420                           ASN1_OCTET_STRING *ukm, int keylen)
 421 {
 422     union {
 423         CMS_SharedInfo *pecsi;
 424         ASN1_VALUE *a;
 425     } intsi = {
 426         NULL
 427     };
 428
 429     ASN1_OCTET_STRING oklen;
 430     unsigned char kl[4];
 431     CMS_SharedInfo ecsi;
 432
 433     keylen <<= 3;
 434     kl[0] = (keylen >> 24) & 0xff;
 435     kl[1] = (keylen >> 16) & 0xff;
 436     kl[2] = (keylen >> 8) & 0xff;
 437     kl[3] = keylen & 0xff;
 438     oklen.length = 4;
 439     oklen.data = kl;
 440     oklen.type = V_ASN1_OCTET_STRING;
 441     oklen.flags = 0;
 442     ecsi.keyInfo = kekalg;
 443     ecsi.entityUInfo = ukm;
 444     ecsi.suppPubInfo = &oklen;
 445     intsi.pecsi = &ecsi;
 446     return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
 447 }