crypto/cms/cms_local.h

   1 /*
   2  * Copyright 2008-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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 #ifndef OSSL_CRYPTO_CMS_LOCAL_H
  11 # define OSSL_CRYPTO_CMS_LOCAL_H
  12
  13 # include <openssl/x509.h>
  14
  15 /*
  16  * Cryptographic message syntax (CMS) structures: taken from RFC3852
  17  */
  18
  19 /* Forward references */
  20
  21 typedef struct CMS_IssuerAndSerialNumber_st CMS_IssuerAndSerialNumber;
  22 typedef struct CMS_EncapsulatedContentInfo_st CMS_EncapsulatedContentInfo;
  23 typedef struct CMS_SignerIdentifier_st CMS_SignerIdentifier;
  24 typedef struct CMS_SignedData_st CMS_SignedData;
  25 typedef struct CMS_OtherRevocationInfoFormat_st CMS_OtherRevocationInfoFormat;
  26 typedef struct CMS_OriginatorInfo_st CMS_OriginatorInfo;
  27 typedef struct CMS_EncryptedContentInfo_st CMS_EncryptedContentInfo;
  28 typedef struct CMS_EnvelopedData_st CMS_EnvelopedData;
  29 typedef struct CMS_DigestedData_st CMS_DigestedData;
  30 typedef struct CMS_EncryptedData_st CMS_EncryptedData;
  31 typedef struct CMS_AuthenticatedData_st CMS_AuthenticatedData;
  32 typedef struct CMS_AuthEnvelopedData_st CMS_AuthEnvelopedData;
  33 typedef struct CMS_CompressedData_st CMS_CompressedData;
  34 typedef struct CMS_OtherCertificateFormat_st CMS_OtherCertificateFormat;
  35 typedef struct CMS_KeyTransRecipientInfo_st CMS_KeyTransRecipientInfo;
  36 typedef struct CMS_OriginatorPublicKey_st CMS_OriginatorPublicKey;
  37 typedef struct CMS_OriginatorIdentifierOrKey_st CMS_OriginatorIdentifierOrKey;
  38 typedef struct CMS_KeyAgreeRecipientInfo_st CMS_KeyAgreeRecipientInfo;
  39 typedef struct CMS_RecipientKeyIdentifier_st CMS_RecipientKeyIdentifier;
  40 typedef struct CMS_KeyAgreeRecipientIdentifier_st
  41     CMS_KeyAgreeRecipientIdentifier;
  42 typedef struct CMS_KEKIdentifier_st CMS_KEKIdentifier;
  43 typedef struct CMS_KEKRecipientInfo_st CMS_KEKRecipientInfo;
  44 typedef struct CMS_PasswordRecipientInfo_st CMS_PasswordRecipientInfo;
  45 typedef struct CMS_OtherRecipientInfo_st CMS_OtherRecipientInfo;
  46 typedef struct CMS_ReceiptsFrom_st CMS_ReceiptsFrom;
  47 typedef struct CMS_CTX_st CMS_CTX;
  48
  49 struct CMS_CTX_st {
  50     OSSL_LIB_CTX *libctx;
  51     char *propq;
  52 };
  53
  54 struct CMS_ContentInfo_st {
  55     ASN1_OBJECT *contentType;
  56     union {
  57         ASN1_OCTET_STRING *data;
  58         CMS_SignedData *signedData;
  59         CMS_EnvelopedData *envelopedData;
  60         CMS_DigestedData *digestedData;
  61         CMS_EncryptedData *encryptedData;
  62         CMS_AuthEnvelopedData *authEnvelopedData;
  63         CMS_AuthenticatedData *authenticatedData;
  64         CMS_CompressedData *compressedData;
  65         ASN1_TYPE *other;
  66         /* Other types ... */
  67         void *otherData;
  68     } d;
  69     CMS_CTX ctx;
  70 };
  71
  72 DEFINE_STACK_OF(CMS_CertificateChoices)
  73
  74 struct CMS_SignedData_st {
  75     int32_t version;
  76     STACK_OF(X509_ALGOR) *digestAlgorithms;
  77     CMS_EncapsulatedContentInfo *encapContentInfo;
  78     STACK_OF(CMS_CertificateChoices) *certificates;
  79     STACK_OF(CMS_RevocationInfoChoice) *crls;
  80     STACK_OF(CMS_SignerInfo) *signerInfos;
  81 };
  82
  83 struct CMS_EncapsulatedContentInfo_st {
  84     ASN1_OBJECT *eContentType;
  85     ASN1_OCTET_STRING *eContent;
  86     /* Set to 1 if incomplete structure only part set up */
  87     int partial;
  88 };
  89
  90 struct CMS_SignerInfo_st {
  91     int32_t version;
  92     CMS_SignerIdentifier *sid;
  93     X509_ALGOR *digestAlgorithm;
  94     STACK_OF(X509_ATTRIBUTE) *signedAttrs;
  95     X509_ALGOR *signatureAlgorithm;
  96     ASN1_OCTET_STRING *signature;
  97     STACK_OF(X509_ATTRIBUTE) *unsignedAttrs;
  98     /* Signing certificate and key */
  99     X509 *signer;
 100     EVP_PKEY *pkey;
 101     /* Digest and public key context for alternative parameters */
 102     EVP_MD_CTX *mctx;
 103     EVP_PKEY_CTX *pctx;
 104     const CMS_CTX *cms_ctx;
 105 };
 106
 107 struct CMS_SignerIdentifier_st {
 108     int type;
 109     union {
 110         CMS_IssuerAndSerialNumber *issuerAndSerialNumber;
 111         ASN1_OCTET_STRING *subjectKeyIdentifier;
 112     } d;
 113 };
 114
 115 struct CMS_EnvelopedData_st {
 116     int32_t version;
 117     CMS_OriginatorInfo *originatorInfo;
 118     STACK_OF(CMS_RecipientInfo) *recipientInfos;
 119     CMS_EncryptedContentInfo *encryptedContentInfo;
 120     STACK_OF(X509_ATTRIBUTE) *unprotectedAttrs;
 121 };
 122
 123 struct CMS_OriginatorInfo_st {
 124     STACK_OF(CMS_CertificateChoices) *certificates;
 125     STACK_OF(CMS_RevocationInfoChoice) *crls;
 126 };
 127
 128 struct CMS_EncryptedContentInfo_st {
 129     ASN1_OBJECT *contentType;
 130     X509_ALGOR *contentEncryptionAlgorithm;
 131     ASN1_OCTET_STRING *encryptedContent;
 132     /* Content encryption algorithm, key and tag */
 133     const EVP_CIPHER *cipher;
 134     unsigned char *key;
 135     size_t keylen;
 136     unsigned char *tag;
 137     size_t taglen;
 138     /* Set to 1 if we are debugging decrypt and don't fake keys for MMA */
 139     int debug;
 140     /* Set to 1 if we have no cert and need extra safety measures for MMA */
 141     int havenocert;
 142 };
 143
 144 struct CMS_RecipientInfo_st {
 145     int type;
 146     union {
 147         CMS_KeyTransRecipientInfo *ktri;
 148         CMS_KeyAgreeRecipientInfo *kari;
 149         CMS_KEKRecipientInfo *kekri;
 150         CMS_PasswordRecipientInfo *pwri;
 151         CMS_OtherRecipientInfo *ori;
 152     } d;
 153 };
 154
 155 typedef CMS_SignerIdentifier CMS_RecipientIdentifier;
 156
 157 struct CMS_KeyTransRecipientInfo_st {
 158     int32_t version;
 159     CMS_RecipientIdentifier *rid;
 160     X509_ALGOR *keyEncryptionAlgorithm;
 161     ASN1_OCTET_STRING *encryptedKey;
 162     /* Recipient Key and cert */
 163     X509 *recip;
 164     EVP_PKEY *pkey;
 165     /* Public key context for this operation */
 166     EVP_PKEY_CTX *pctx;
 167     const CMS_CTX *cms_ctx;
 168 };
 169
 170 struct CMS_KeyAgreeRecipientInfo_st {
 171     int32_t version;
 172     CMS_OriginatorIdentifierOrKey *originator;
 173     ASN1_OCTET_STRING *ukm;
 174     X509_ALGOR *keyEncryptionAlgorithm;
 175     STACK_OF(CMS_RecipientEncryptedKey) *recipientEncryptedKeys;
 176     /* Public key context associated with current operation */
 177     EVP_PKEY_CTX *pctx;
 178     /* Cipher context for CEK wrapping */
 179     EVP_CIPHER_CTX *ctx;
 180     const CMS_CTX *cms_ctx;
 181 };
 182
 183 struct CMS_OriginatorIdentifierOrKey_st {
 184     int type;
 185     union {
 186         CMS_IssuerAndSerialNumber *issuerAndSerialNumber;
 187         ASN1_OCTET_STRING *subjectKeyIdentifier;
 188         CMS_OriginatorPublicKey *originatorKey;
 189     } d;
 190 };
 191
 192 struct CMS_OriginatorPublicKey_st {
 193     X509_ALGOR *algorithm;
 194     ASN1_BIT_STRING *publicKey;
 195 };
 196
 197 struct CMS_RecipientEncryptedKey_st {
 198     CMS_KeyAgreeRecipientIdentifier *rid;
 199     ASN1_OCTET_STRING *encryptedKey;
 200     /* Public key associated with this recipient */
 201     EVP_PKEY *pkey;
 202 };
 203
 204 struct CMS_KeyAgreeRecipientIdentifier_st {
 205     int type;
 206     union {
 207         CMS_IssuerAndSerialNumber *issuerAndSerialNumber;
 208         CMS_RecipientKeyIdentifier *rKeyId;
 209     } d;
 210 };
 211
 212 struct CMS_RecipientKeyIdentifier_st {
 213     ASN1_OCTET_STRING *subjectKeyIdentifier;
 214     ASN1_GENERALIZEDTIME *date;
 215     CMS_OtherKeyAttribute *other;
 216 };
 217
 218 struct CMS_KEKRecipientInfo_st {
 219     int32_t version;
 220     CMS_KEKIdentifier *kekid;
 221     X509_ALGOR *keyEncryptionAlgorithm;
 222     ASN1_OCTET_STRING *encryptedKey;
 223     /* Extra info: symmetric key to use */
 224     unsigned char *key;
 225     size_t keylen;
 226     const CMS_CTX *cms_ctx;
 227 };
 228
 229 struct CMS_KEKIdentifier_st {
 230     ASN1_OCTET_STRING *keyIdentifier;
 231     ASN1_GENERALIZEDTIME *date;
 232     CMS_OtherKeyAttribute *other;
 233 };
 234
 235 struct CMS_PasswordRecipientInfo_st {
 236     int32_t version;
 237     X509_ALGOR *keyDerivationAlgorithm;
 238     X509_ALGOR *keyEncryptionAlgorithm;
 239     ASN1_OCTET_STRING *encryptedKey;
 240     /* Extra info: password to use */
 241     unsigned char *pass;
 242     size_t passlen;
 243     const CMS_CTX *cms_ctx;
 244 };
 245
 246 struct CMS_OtherRecipientInfo_st {
 247     ASN1_OBJECT *oriType;
 248     ASN1_TYPE *oriValue;
 249 };
 250
 251 struct CMS_DigestedData_st {
 252     int32_t version;
 253     X509_ALGOR *digestAlgorithm;
 254     CMS_EncapsulatedContentInfo *encapContentInfo;
 255     ASN1_OCTET_STRING *digest;
 256 };
 257
 258 struct CMS_EncryptedData_st {
 259     int32_t version;
 260     CMS_EncryptedContentInfo *encryptedContentInfo;
 261     STACK_OF(X509_ATTRIBUTE) *unprotectedAttrs;
 262 };
 263
 264 struct CMS_AuthenticatedData_st {
 265     int32_t version;
 266     CMS_OriginatorInfo *originatorInfo;
 267     STACK_OF(CMS_RecipientInfo) *recipientInfos;
 268     X509_ALGOR *macAlgorithm;
 269     X509_ALGOR *digestAlgorithm;
 270     CMS_EncapsulatedContentInfo *encapContentInfo;
 271     STACK_OF(X509_ATTRIBUTE) *authAttrs;
 272     ASN1_OCTET_STRING *mac;
 273     STACK_OF(X509_ATTRIBUTE) *unauthAttrs;
 274 };
 275
 276 struct CMS_AuthEnvelopedData_st {
 277     int32_t version;
 278     CMS_OriginatorInfo *originatorInfo;
 279     STACK_OF(CMS_RecipientInfo) *recipientInfos;
 280     CMS_EncryptedContentInfo *authEncryptedContentInfo;
 281     STACK_OF(X509_ATTRIBUTE) *authAttrs;
 282     ASN1_OCTET_STRING *mac;
 283     STACK_OF(X509_ATTRIBUTE) *unauthAttrs;
 284 };
 285
 286 struct CMS_CompressedData_st {
 287     int32_t version;
 288     X509_ALGOR *compressionAlgorithm;
 289     STACK_OF(CMS_RecipientInfo) *recipientInfos;
 290     CMS_EncapsulatedContentInfo *encapContentInfo;
 291 };
 292
 293 struct CMS_RevocationInfoChoice_st {
 294     int type;
 295     union {
 296         X509_CRL *crl;
 297         CMS_OtherRevocationInfoFormat *other;
 298     } d;
 299 };
 300
 301 # define CMS_REVCHOICE_CRL               0
 302 # define CMS_REVCHOICE_OTHER             1
 303
 304 struct CMS_OtherRevocationInfoFormat_st {
 305     ASN1_OBJECT *otherRevInfoFormat;
 306     ASN1_TYPE *otherRevInfo;
 307 };
 308
 309 struct CMS_CertificateChoices {
 310     int type;
 311     union {
 312         X509 *certificate;
 313         ASN1_STRING *extendedCertificate; /* Obsolete */
 314         ASN1_STRING *v1AttrCert; /* Left encoded for now */
 315         ASN1_STRING *v2AttrCert; /* Left encoded for now */
 316         CMS_OtherCertificateFormat *other;
 317     } d;
 318 };
 319
 320 # define CMS_CERTCHOICE_CERT             0
 321 # define CMS_CERTCHOICE_EXCERT           1
 322 # define CMS_CERTCHOICE_V1ACERT          2
 323 # define CMS_CERTCHOICE_V2ACERT          3
 324 # define CMS_CERTCHOICE_OTHER            4
 325
 326 struct CMS_OtherCertificateFormat_st {
 327     ASN1_OBJECT *otherCertFormat;
 328     ASN1_TYPE *otherCert;
 329 };
 330
 331 /*
 332  * This is also defined in pkcs7.h but we duplicate it to allow the CMS code
 333  * to be independent of PKCS#7
 334  */
 335
 336 struct CMS_IssuerAndSerialNumber_st {
 337     X509_NAME *issuer;
 338     ASN1_INTEGER *serialNumber;
 339 };
 340
 341 struct CMS_OtherKeyAttribute_st {
 342     ASN1_OBJECT *keyAttrId;
 343     ASN1_TYPE *keyAttr;
 344 };
 345
 346 /* ESS structures */
 347
 348 struct CMS_ReceiptRequest_st {
 349     ASN1_OCTET_STRING *signedContentIdentifier;
 350     CMS_ReceiptsFrom *receiptsFrom;
 351     STACK_OF(GENERAL_NAMES) *receiptsTo;
 352 };
 353
 354 struct CMS_ReceiptsFrom_st {
 355     int type;
 356     union {
 357         int32_t allOrFirstTier;
 358         STACK_OF(GENERAL_NAMES) *receiptList;
 359     } d;
 360 };
 361
 362 struct CMS_Receipt_st {
 363     int32_t version;
 364     ASN1_OBJECT *contentType;
 365     ASN1_OCTET_STRING *signedContentIdentifier;
 366     ASN1_OCTET_STRING *originatorSignatureValue;
 367 };
 368
 369 DECLARE_ASN1_FUNCTIONS(CMS_ContentInfo)
 370 DECLARE_ASN1_ITEM(CMS_SignerInfo)
 371 DECLARE_ASN1_ITEM(CMS_IssuerAndSerialNumber)
 372 DECLARE_ASN1_ITEM(CMS_Attributes_Sign)
 373 DECLARE_ASN1_ITEM(CMS_Attributes_Verify)
 374 DECLARE_ASN1_ITEM(CMS_RecipientInfo)
 375 DECLARE_ASN1_ITEM(CMS_PasswordRecipientInfo)
 376 DECLARE_ASN1_ALLOC_FUNCTIONS(CMS_IssuerAndSerialNumber)
 377
 378 # define CMS_SIGNERINFO_ISSUER_SERIAL    0
 379 # define CMS_SIGNERINFO_KEYIDENTIFIER    1
 380
 381 # define CMS_RECIPINFO_ISSUER_SERIAL     0
 382 # define CMS_RECIPINFO_KEYIDENTIFIER     1
 383
 384 # define CMS_REK_ISSUER_SERIAL           0
 385 # define CMS_REK_KEYIDENTIFIER           1
 386
 387 # define CMS_OIK_ISSUER_SERIAL           0
 388 # define CMS_OIK_KEYIDENTIFIER           1
 389 # define CMS_OIK_PUBKEY                  2
 390
 391 BIO *ossl_cms_content_bio(CMS_ContentInfo *cms);
 392 const CMS_CTX *ossl_cms_get0_cmsctx(const CMS_ContentInfo *cms);
 393 OSSL_LIB_CTX *ossl_cms_ctx_get0_libctx(const CMS_CTX *ctx);
 394 const char *ossl_cms_ctx_get0_propq(const CMS_CTX *ctx);
 395 void ossl_cms_resolve_libctx(CMS_ContentInfo *ci);
 396
 397 CMS_ContentInfo *ossl_cms_Data_create(OSSL_LIB_CTX *ctx, const char *propq);
 398
 399 CMS_ContentInfo *ossl_cms_DigestedData_create(const EVP_MD *md,
 400                                               OSSL_LIB_CTX *libctx,
 401                                               const char *propq);
 402 BIO *ossl_cms_DigestedData_init_bio(const CMS_ContentInfo *cms);
 403 int ossl_cms_DigestedData_do_final(const CMS_ContentInfo *cms,
 404                                    BIO *chain, int verify);
 405
 406 BIO *ossl_cms_SignedData_init_bio(CMS_ContentInfo *cms);
 407 int ossl_cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain);
 408 int ossl_cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert,
 409                                    int type, const CMS_CTX *ctx);
 410 int ossl_cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
 411                                              ASN1_OCTET_STRING **keyid,
 412                                              X509_NAME **issuer,
 413                                              ASN1_INTEGER **sno);
 414 int ossl_cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert);
 415
 416 CMS_ContentInfo *ossl_cms_CompressedData_create(int comp_nid,
 417                                                 OSSL_LIB_CTX *libctx,
 418                                                 const char *propq);
 419 BIO *ossl_cms_CompressedData_init_bio(const CMS_ContentInfo *cms);
 420
 421 BIO *ossl_cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm,
 422                                        const CMS_CTX *ctx);
 423 int ossl_cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
 424                                       X509_ALGOR *mdalg);
 425
 426 int ossl_cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert);
 427 int ossl_cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert);
 428 int ossl_cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert);
 429 int ossl_cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert);
 430
 431 BIO *ossl_cms_EncryptedContent_init_bio(CMS_EncryptedContentInfo *ec,
 432                                         const CMS_CTX *ctx);
 433 BIO *ossl_cms_EncryptedData_init_bio(const CMS_ContentInfo *cms);
 434 int ossl_cms_EncryptedContent_init(CMS_EncryptedContentInfo *ec,
 435                                    const EVP_CIPHER *cipher,
 436                                    const unsigned char *key, size_t keylen,
 437                                    const CMS_CTX *ctx);
 438
 439 int ossl_cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms);
 440 int ossl_cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src);
 441 ASN1_OCTET_STRING *ossl_cms_encode_Receipt(CMS_SignerInfo *si);
 442
 443 BIO *ossl_cms_EnvelopedData_init_bio(CMS_ContentInfo *cms);
 444 int ossl_cms_EnvelopedData_final(CMS_ContentInfo *cms, BIO *chain);
 445 BIO *ossl_cms_AuthEnvelopedData_init_bio(CMS_ContentInfo *cms);
 446 int ossl_cms_AuthEnvelopedData_final(CMS_ContentInfo *cms, BIO *cmsbio);
 447 CMS_EnvelopedData *ossl_cms_get0_enveloped(CMS_ContentInfo *cms);
 448 CMS_AuthEnvelopedData *ossl_cms_get0_auth_enveloped(CMS_ContentInfo *cms);
 449 CMS_EncryptedContentInfo *ossl_cms_get0_env_enc_content(const CMS_ContentInfo *cms);
 450
 451 /* RecipientInfo routines */
 452 int ossl_cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd);
 453 int ossl_cms_pkey_get_ri_type(EVP_PKEY *pk);
 454 int ossl_cms_pkey_is_ri_type_supported(EVP_PKEY *pk, int ri_type);
 455
 456 void ossl_cms_RecipientInfos_set_cmsctx(CMS_ContentInfo *cms);
 457
 458 /* KARI routines */
 459 int ossl_cms_RecipientInfo_kari_init(CMS_RecipientInfo *ri, X509 *recip,
 460                                      EVP_PKEY *recipPubKey, X509 *originator,
 461                                      EVP_PKEY *originatorPrivKey,
 462                                      unsigned int flags,
 463                                      const CMS_CTX *ctx);
 464 int ossl_cms_RecipientInfo_kari_encrypt(const CMS_ContentInfo *cms,
 465                                         CMS_RecipientInfo *ri);
 466
 467 /* PWRI routines */
 468 int ossl_cms_RecipientInfo_pwri_crypt(const CMS_ContentInfo *cms,
 469                                       CMS_RecipientInfo *ri, int en_de);
 470 /* SignerInfo routines */
 471 int CMS_si_check_attributes(const CMS_SignerInfo *si);
 472 void ossl_cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms);
 473
 474
 475 /* ESS routines */
 476 int ossl_cms_check_signing_certs(const CMS_SignerInfo *si,
 477                                  const STACK_OF(X509) *chain);
 478
 479 int ossl_cms_dh_envelope(CMS_RecipientInfo *ri, int decrypt);
 480 int ossl_cms_ecdh_envelope(CMS_RecipientInfo *ri, int decrypt);
 481 int ossl_cms_rsa_envelope(CMS_RecipientInfo *ri, int decrypt);
 482 int ossl_cms_ecdsa_dsa_sign(CMS_SignerInfo *si, int verify);
 483 int ossl_cms_rsa_sign(CMS_SignerInfo *si, int verify);
 484
 485 DECLARE_ASN1_ITEM(CMS_CertificateChoices)
 486 DECLARE_ASN1_ITEM(CMS_DigestedData)
 487 DECLARE_ASN1_ITEM(CMS_EncryptedData)
 488 DECLARE_ASN1_ITEM(CMS_EnvelopedData)
 489 DECLARE_ASN1_ITEM(CMS_AuthEnvelopedData)
 490 DECLARE_ASN1_ITEM(CMS_KEKRecipientInfo)
 491 DECLARE_ASN1_ITEM(CMS_KeyAgreeRecipientInfo)
 492 DECLARE_ASN1_ITEM(CMS_KeyTransRecipientInfo)
 493 DECLARE_ASN1_ITEM(CMS_OriginatorPublicKey)
 494 DECLARE_ASN1_ITEM(CMS_OtherKeyAttribute)
 495 DECLARE_ASN1_ITEM(CMS_Receipt)
 496 DECLARE_ASN1_ITEM(CMS_ReceiptRequest)
 497 DECLARE_ASN1_ITEM(CMS_RecipientEncryptedKey)
 498 DECLARE_ASN1_ITEM(CMS_RecipientKeyIdentifier)
 499 DECLARE_ASN1_ITEM(CMS_RevocationInfoChoice)
 500 DECLARE_ASN1_ITEM(CMS_SignedData)
 501 DECLARE_ASN1_ITEM(CMS_CompressedData)
 502
 503 #endif