OSX/libsecurity_smime/lib/cmstpriv.h

   1 /*
   2  * The contents of this file are subject to the Mozilla Public
   3  * License Version 1.1 (the "License"); you may not use this file
   4  * except in compliance with the License. You may obtain a copy of
   5  * the License at http://www.mozilla.org/MPL/
   6  *
   7  * Software distributed under the License is distributed on an "AS
   8  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9  * implied. See the License for the specific language governing
  10  * rights and limitations under the License.
  11  *
  12  * The Original Code is the Netscape security libraries.
  13  *
  14  * The Initial Developer of the Original Code is Netscape
  15  * Communications Corporation.  Portions created by Netscape are
  16  * Copyright (C) 1994-2000 Netscape Communications Corporation.  All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  * Alternatively, the contents of this file may be used under the
  22  * terms of the GNU General Public License Version 2 or later (the
  23  * "GPL"), in which case the provisions of the GPL are applicable
  24  * instead of those above.  If you wish to allow use of your
  25  * version of this file only under the terms of the GPL and not to
  26  * allow others to use your version of this file under the MPL,
  27  * indicate your decision by deleting the provisions above and
  28  * replace them with the notice and other provisions required by
  29  * the GPL.  If you do not delete the provisions above, a recipient
  30  * may use your version of this file under either the MPL or the
  31  * GPL.
  32  */
  33
  34 /*
  35  * Header for CMS types.
  36  */
  37
  38 #ifndef _CMSTPRIV_H_
  39 #define _CMSTPRIV_H_
  40
  41 #include <Security/SecCmsBase.h>
  42 #include <security_smime/secoidt.h>
  43
  44 #include <Security/secasn1t.h>
  45 #include <security_asn1/plarenas.h>
  46 #include <Security/nameTemplates.h>
  47
  48 #include <CoreFoundation/CFArray.h>
  49 #include <CoreFoundation/CFDate.h>
  50 #include <Security/SecCertificate.h>
  51 #include <Security/SecKey.h>
  52
  53 /* rjr: PKCS #11 cert handling (pk11cert.c) does use SecCmsRecipientInfo's.
  54  * This is because when we search the recipient list for the cert and key we
  55  * want, we need to invert the order of the loops we used to have. The old
  56  * loops were:
  57  *
  58  *  For each recipient {
  59  *       find_cert = PK11_Find_AllCert(recipient->issuerSN);
  60  *       [which unrolls to... ]
  61  *       For each slot {
  62  *            Log into slot;
  63  *            search slot for cert;
  64  *      }
  65  *  }
  66  *
  67  *  the new loop searchs all the recipients at once on a slot. this allows
  68  *  PKCS #11 to order slots in such a way that logout slots don't get checked
  69  *  if we can find the cert on a logged in slot. This eliminates lots of
  70  *  spurious password prompts when smart cards are installed... so why this
  71  *  comment? If you make SecCmsRecipientInfo completely opaque, you need
  72  *  to provide a non-opaque list of issuerSN's (the only field PKCS#11 needs
  73  *  and fix up pk11cert.c first. NOTE: Only S/MIME calls this special PKCS #11
  74  *  function.
  75  */
  76
  77 typedef struct SecCmsContentInfoStr SecCmsContentInfo;
  78 typedef struct SecCmsMessageStr SecCmsMessage;
  79 typedef struct SecCmsSignedDataStr SecCmsSignedData;
  80 typedef struct SecCmsSignerInfoStr SecCmsSignerInfo;
  81 typedef struct SecCmsEnvelopedDataStr SecCmsEnvelopedData;
  82 typedef struct SecCmsRecipientInfoStr SecCmsRecipientInfo;
  83 typedef struct SecCmsDigestedDataStr SecCmsDigestedData;
  84 typedef struct SecCmsEncryptedDataStr SecCmsEncryptedData;
  85
  86 typedef struct SecCmsIssuerAndSNStr SecCmsIssuerAndSN;
  87 typedef struct SecCmsOriginatorInfoStr SecCmsOriginatorInfo;
  88 typedef struct SecCmsAttributeStr SecCmsAttribute;
  89
  90 typedef union SecCmsContentUnion SecCmsContent;
  91 typedef struct SecCmsSignerIdentifierStr SecCmsSignerIdentifier;
  92
  93 typedef struct SecCmsSMIMEKEAParametersStr SecCmsSMIMEKEAParameters;
  94
  95 typedef struct SecCmsCipherContextStr SecCmsCipherContext;
  96 typedef struct SecCmsCipherContextStr *SecCmsCipherContextRef;
  97
  98 /* =============================================================================
  99  * ENCAPSULATED CONTENTINFO & CONTENTINFO
 100  */
 101
 102 union SecCmsContentUnion {
 103     /* either unstructured */
 104     CSSM_DATA_PTR                       data;
 105     /* or structured data */
 106     SecCmsDigestedDataRef       digestedData;
 107     SecCmsEncryptedDataRef      encryptedData;
 108     SecCmsEnvelopedDataRef      envelopedData;
 109     SecCmsSignedDataRef                 signedData;
 110     /* or anonymous pointer to something */
 111     void *                      pointer;
 112 };
 113
 114 struct SecCmsContentInfoStr {
 115     CSSM_DATA                   contentType;
 116     SecCmsContent               content;
 117     /* --------- local; not part of encoding --------- */
 118     SECOidData *                contentTypeTag;
 119
 120     /* additional info for encryptedData and envelopedData */
 121     /* we waste this space for signedData and digestedData. sue me. */
 122
 123     SECAlgorithmID              contentEncAlg;
 124     CSSM_DATA_PTR                       rawContent;             /* encrypted DER, optional */
 125                                                         /* XXXX bytes not encrypted, but encoded? */
 126     /* --------- local; not part of encoding --------- */
 127     SecSymmetricKeyRef          bulkkey;                /* bulk encryption key */
 128     int                         keysize;                /* size of bulk encryption key
 129                                                          * (only used by creation code) */
 130     SECOidTag                   contentEncAlgTag;       /* oid tag of encryption algorithm
 131                                                          * (only used by creation code) */
 132     SecCmsCipherContextRef ciphcx;              /* context for en/decryption going on */
 133     SecCmsDigestContextRef digcx;                       /* context for digesting going on */
 134     SecPrivateKeyRef            privkey;                /* @@@ private key is only here as a workaround for 3401088 */
 135 };
 136
 137 /* =============================================================================
 138  * MESSAGE
 139  */
 140
 141 /*!
 142     @typedef
 143     @discussion    Type of function called inside SecCmsSignedDataEncodeAfterData to
 144                     fire up XPC service to talk to TimeStamping server, etc.
 145     @param context  Typically a CFDictionary with URL, etc.
 146     @param messageImprint   a SecAsn1TSAMessageImprint with the algorithm and hash value
 147     @param tstoken  The returned TimeStampToken
 148  */
 149 typedef OSStatus (*SecCmsTSACallback)(const void *context, void *messageImprint, uint64_t nonce, CSSM_DATA *tstoken);
 150
 151 struct SecCmsMessageStr {
 152     SecCmsContentInfo   contentInfo;            /* "outer" cinfo */
 153     /* --------- local; not part of encoding --------- */
 154     PLArenaPool *       poolp;
 155     Boolean             poolp_is_ours;
 156     int                 refCount;
 157     /* properties of the "inner" data */
 158     SECAlgorithmID **   detached_digestalgs;
 159     CSSM_DATA_PTR *     detached_digests;
 160     void *              pwfn_arg;
 161     SecCmsGetDecryptKeyCallback decrypt_key_cb;
 162     void *              decrypt_key_cb_arg;
 163
 164     /* Fields for Time Stamping */
 165     SecCmsTSACallback tsaCallback;
 166     CFTypeRef tsaContext;
 167 };
 168
 169 /* =============================================================================
 170  * SIGNEDDATA
 171  */
 172
 173 struct SecCmsSignedDataStr {
 174     CSSM_DATA                   version;
 175     SECAlgorithmID **           digestAlgorithms;
 176     SecCmsContentInfo           contentInfo;
 177     CSSM_DATA_PTR *             rawCerts;
 178     CSSM_DATA_PTR *             rawCrls;
 179     SecCmsSignerInfoRef *               signerInfos;
 180     /* --------- local; not part of encoding --------- */
 181     SecCmsMessageRef            cmsg;                   /* back pointer to message */
 182     CSSM_DATA_PTR *             digests;
 183     CFMutableArrayRef           certs;
 184 };
 185 #define SEC_CMS_SIGNED_DATA_VERSION_BASIC       1       /* what we *create* */
 186 #define SEC_CMS_SIGNED_DATA_VERSION_EXT         3       /* what we *create* */
 187
 188 typedef enum {
 189     SecCmsSignerIDIssuerSN = 0,
 190     SecCmsSignerIDSubjectKeyID = 1
 191 } SecCmsSignerIDSelector;
 192
 193 struct SecCmsSignerIdentifierStr {
 194     SecCmsSignerIDSelector identifierType;
 195     union {
 196         SecCmsIssuerAndSN *issuerAndSN;
 197         CSSM_DATA_PTR subjectKeyID;
 198     } id;
 199 };
 200
 201 struct SecCmsIssuerAndSNStr {
 202         NSS_Name issuer;
 203         CSSM_DATA serialNumber;
 204     /* --------- local; not part of encoding --------- */
 205         CSSM_DATA derIssuer;
 206 };
 207
 208 struct SecCmsSignerInfoStr {
 209     CSSM_DATA                   version;
 210     SecCmsSignerIdentifier      signerIdentifier;
 211     SECAlgorithmID              digestAlg;
 212     SecCmsAttribute **          authAttr;
 213     SECAlgorithmID              digestEncAlg;
 214     CSSM_DATA                   encDigest;
 215     SecCmsAttribute **          unAuthAttr;
 216     /* --------- local; not part of encoding --------- */
 217     SecCmsMessageRef            cmsg;                   /* back pointer to message */
 218     SecCmsSignedDataRef         sigd;                   /* back pointer to SignedData */
 219     SecCertificateRef           cert;
 220     CFArrayRef                  certList;
 221     CFAbsoluteTime              signingTime;
 222     SecCmsVerificationStatus    verificationStatus;
 223     SecPrivateKeyRef            signingKey; /* Used if we're using subjKeyID*/
 224     SecPublicKeyRef             pubKey;
 225     CFAbsoluteTime              timestampTime;
 226     CFAbsoluteTime              tsaLeafNotBefore;   /* Start date for Timestamp Authority leaf */
 227     CFAbsoluteTime              tsaLeafNotAfter;    /* Expiration date for Timestamp Authority leaf */
 228     CFMutableArrayRef   timestampCertList;
 229 };
 230 #define SEC_CMS_SIGNER_INFO_VERSION_ISSUERSN    1       /* what we *create* */
 231 #define SEC_CMS_SIGNER_INFO_VERSION_SUBJKEY     3       /* what we *create* */
 232
 233 /* =============================================================================
 234  * ENVELOPED DATA
 235  */
 236 struct SecCmsEnvelopedDataStr {
 237     CSSM_DATA                   version;
 238     SecCmsOriginatorInfo *      originatorInfo;         /* optional */
 239     SecCmsRecipientInfoRef *    recipientInfos;
 240     SecCmsContentInfo           contentInfo;
 241     SecCmsAttribute **          unprotectedAttr;
 242     /* --------- local; not part of encoding --------- */
 243     SecCmsMessageRef            cmsg;                   /* back pointer to message */
 244 };
 245 #define SEC_CMS_ENVELOPED_DATA_VERSION_REG      0       /* what we *create* */
 246 #define SEC_CMS_ENVELOPED_DATA_VERSION_ADV      2       /* what we *create* */
 247
 248 struct SecCmsOriginatorInfoStr {
 249     CSSM_DATA_PTR *             rawCerts;
 250     CSSM_DATA_PTR *             rawCrls;
 251     /* --------- local; not part of encoding --------- */
 252     SecCertificateRef *         certs;
 253 };
 254
 255 /* -----------------------------------------------------------------------------
 256  * key transport recipient info
 257  */
 258 typedef enum {
 259     SecCmsRecipientIDIssuerSN = 0,
 260     SecCmsRecipientIDSubjectKeyID = 1
 261 } SecCmsRecipientIDSelector;
 262
 263 struct SecCmsRecipientIdentifierStr {
 264     SecCmsRecipientIDSelector   identifierType;
 265     union {
 266         SecCmsIssuerAndSN       *issuerAndSN;
 267         CSSM_DATA_PTR subjectKeyID;
 268     } id;
 269 };
 270 typedef struct SecCmsRecipientIdentifierStr SecCmsRecipientIdentifier;
 271
 272 struct SecCmsKeyTransRecipientInfoStr {
 273     CSSM_DATA                   version;
 274     SecCmsRecipientIdentifier   recipientIdentifier;
 275     SECAlgorithmID              keyEncAlg;
 276     CSSM_DATA                   encKey;
 277 };
 278 typedef struct SecCmsKeyTransRecipientInfoStr SecCmsKeyTransRecipientInfo;
 279
 280 /*
 281  * View comments before SecCmsRecipientInfoStr for purpose of this
 282  * structure.
 283  */
 284 struct SecCmsKeyTransRecipientInfoExStr {
 285     SecCmsKeyTransRecipientInfo recipientInfo;
 286     int version;  /* version of this structure (0) */
 287     SecPublicKeyRef pubKey;
 288 };
 289
 290 typedef struct SecCmsKeyTransRecipientInfoExStr SecCmsKeyTransRecipientInfoEx;
 291
 292 #define SEC_CMS_KEYTRANS_RECIPIENT_INFO_VERSION_ISSUERSN        0       /* what we *create* */
 293 #define SEC_CMS_KEYTRANS_RECIPIENT_INFO_VERSION_SUBJKEY         2       /* what we *create* */
 294
 295 /* -----------------------------------------------------------------------------
 296  * key agreement recipient info
 297  */
 298 struct SecCmsOriginatorPublicKeyStr {
 299     SECAlgorithmID                      algorithmIdentifier;
 300     CSSM_DATA                           publicKey;                      /* bit string! */
 301 };
 302 typedef struct SecCmsOriginatorPublicKeyStr SecCmsOriginatorPublicKey;
 303
 304 typedef enum {
 305     SecCmsOriginatorIDOrKeyIssuerSN = 0,
 306     SecCmsOriginatorIDOrKeySubjectKeyID = 1,
 307     SecCmsOriginatorIDOrKeyOriginatorPublicKey = 2
 308 } SecCmsOriginatorIDOrKeySelector;
 309
 310 struct SecCmsOriginatorIdentifierOrKeyStr {
 311     SecCmsOriginatorIDOrKeySelector identifierType;
 312     union {
 313         SecCmsIssuerAndSN                       *issuerAndSN;                   /* static-static */
 314         CSSM_DATA                                       subjectKeyID;                   /* static-static */
 315         SecCmsOriginatorPublicKey       originatorPublicKey;    /* ephemeral-static */
 316     } id;
 317 };
 318 typedef struct SecCmsOriginatorIdentifierOrKeyStr SecCmsOriginatorIdentifierOrKey;
 319
 320 struct SecCmsRecipientKeyIdentifierStr {
 321     CSSM_DATA_PTR                               subjectKeyIdentifier;
 322     CSSM_DATA_PTR                               date;                   /* optional */
 323     CSSM_DATA_PTR                               other;                  /* optional */
 324 };
 325 typedef struct SecCmsRecipientKeyIdentifierStr SecCmsRecipientKeyIdentifier;
 326
 327 typedef enum {
 328     SecCmsKeyAgreeRecipientIDIssuerSN = 0,
 329     SecCmsKeyAgreeRecipientIDRKeyID = 1
 330 } SecCmsKeyAgreeRecipientIDSelector;
 331
 332 struct SecCmsKeyAgreeRecipientIdentifierStr {
 333     SecCmsKeyAgreeRecipientIDSelector   identifierType;
 334     union {
 335         SecCmsIssuerAndSN               *issuerAndSN;
 336         SecCmsRecipientKeyIdentifier    recipientKeyIdentifier;
 337     } id;
 338 };
 339 typedef struct SecCmsKeyAgreeRecipientIdentifierStr SecCmsKeyAgreeRecipientIdentifier;
 340
 341 struct SecCmsRecipientEncryptedKeyStr {
 342     SecCmsKeyAgreeRecipientIdentifier   recipientIdentifier;
 343     CSSM_DATA                           encKey;
 344 };
 345 typedef struct SecCmsRecipientEncryptedKeyStr SecCmsRecipientEncryptedKey;
 346
 347 struct SecCmsKeyAgreeRecipientInfoStr {
 348     CSSM_DATA                           version;
 349     SecCmsOriginatorIdentifierOrKey     originatorIdentifierOrKey;
 350     CSSM_DATA                           ukm;                            /* optional */
 351     SECAlgorithmID                      keyEncAlg;
 352     SecCmsRecipientEncryptedKey **      recipientEncryptedKeys;
 353 };
 354 typedef struct SecCmsKeyAgreeRecipientInfoStr SecCmsKeyAgreeRecipientInfo;
 355
 356 #define SEC_CMS_KEYAGREE_RECIPIENT_INFO_VERSION 3       /* what we *create* */
 357
 358 /* -----------------------------------------------------------------------------
 359  * KEK recipient info
 360  */
 361 struct SecCmsKEKIdentifierStr {
 362     CSSM_DATA                   keyIdentifier;
 363     CSSM_DATA_PTR                       date;                   /* optional */
 364     CSSM_DATA_PTR                       other;                  /* optional */
 365 };
 366 typedef struct SecCmsKEKIdentifierStr SecCmsKEKIdentifier;
 367
 368 struct SecCmsKEKRecipientInfoStr {
 369     CSSM_DATA                   version;
 370     SecCmsKEKIdentifier         kekIdentifier;
 371     SECAlgorithmID              keyEncAlg;
 372     CSSM_DATA                   encKey;
 373 };
 374 typedef struct SecCmsKEKRecipientInfoStr SecCmsKEKRecipientInfo;
 375
 376 #define SEC_CMS_KEK_RECIPIENT_INFO_VERSION      4       /* what we *create* */
 377
 378 /* -----------------------------------------------------------------------------
 379  * recipient info
 380  */
 381
 382 typedef enum {
 383     SecCmsRecipientInfoIDKeyTrans = 0,
 384     SecCmsRecipientInfoIDKeyAgree = 1,
 385     SecCmsRecipientInfoIDKEK = 2
 386 } SecCmsRecipientInfoIDSelector;
 387
 388 /*
 389  * In order to preserve backwards binary compatibility when implementing
 390  * creation of Recipient Info's that uses subjectKeyID in the
 391  * keyTransRecipientInfo we need to stash a public key pointer in this
 392  * structure somewhere.  We figured out that SecCmsKeyTransRecipientInfo
 393  * is the smallest member of the ri union.  We're in luck since that's
 394  * the very structure that would need to use the public key. So we created
 395  * a new structure SecCmsKeyTransRecipientInfoEx which has a member
 396  * SecCmsKeyTransRecipientInfo as the first member followed by a version
 397  * and a public key pointer.  This way we can keep backwards compatibility
 398  * without changing the size of this structure.
 399  *
 400  * BTW, size of structure:
 401  * SecCmsKeyTransRecipientInfo:  9 ints, 4 pointers
 402  * SecCmsKeyAgreeRecipientInfo: 12 ints, 8 pointers
 403  * SecCmsKEKRecipientInfo:      10 ints, 7 pointers
 404  *
 405  * The new structure:
 406  * SecCmsKeyTransRecipientInfoEx: sizeof(SecCmsKeyTransRecipientInfo) +
 407  *                                1 int, 1 pointer
 408  */
 409
 410 struct SecCmsRecipientInfoStr {
 411     SecCmsRecipientInfoIDSelector recipientInfoType;
 412     union {
 413         SecCmsKeyTransRecipientInfo keyTransRecipientInfo;
 414         SecCmsKeyAgreeRecipientInfo keyAgreeRecipientInfo;
 415         SecCmsKEKRecipientInfo kekRecipientInfo;
 416         SecCmsKeyTransRecipientInfoEx keyTransRecipientInfoEx;
 417     } ri;
 418     /* --------- local; not part of encoding --------- */
 419     SecCmsMessageRef            cmsg;                   /* back pointer to message */
 420     SecCertificateRef           cert;                   /* recipient's certificate */
 421 };
 422
 423 /* =============================================================================
 424  * DIGESTED DATA
 425  */
 426 struct SecCmsDigestedDataStr {
 427     CSSM_DATA                   version;
 428     SECAlgorithmID              digestAlg;
 429     SecCmsContentInfo           contentInfo;
 430     CSSM_DATA                   digest;
 431     /* --------- local; not part of encoding --------- */
 432     SecCmsMessageRef            cmsg;           /* back pointer */
 433     CSSM_DATA                   cdigest;        /* calculated digest */
 434 };
 435 #define SEC_CMS_DIGESTED_DATA_VERSION_DATA      0       /* what we *create* */
 436 #define SEC_CMS_DIGESTED_DATA_VERSION_ENCAP     2       /* what we *create* */
 437
 438 /* =============================================================================
 439  * ENCRYPTED DATA
 440  */
 441 struct SecCmsEncryptedDataStr {
 442     CSSM_DATA                   version;
 443     SecCmsContentInfo           contentInfo;
 444     SecCmsAttribute **          unprotectedAttr;        /* optional */
 445     /* --------- local; not part of encoding --------- */
 446     SecCmsMessageRef            cmsg;           /* back pointer */
 447 };
 448 #define SEC_CMS_ENCRYPTED_DATA_VERSION          0       /* what we *create* */
 449 #define SEC_CMS_ENCRYPTED_DATA_VERSION_UPATTR   2       /* what we *create* */
 450
 451 /* =============================================================================
 452  * FORTEZZA KEA
 453  */
 454
 455 /* An enumerated type used to select templates based on the encryption
 456    scenario and data specifics. */
 457 typedef enum {
 458     SecCmsKEAInvalid = -1,
 459     SecCmsKEAUsesSkipjack = 0,
 460     SecCmsKEAUsesNonSkipjack = 1,
 461     SecCmsKEAUsesNonSkipjackWithPaddedEncKey = 2
 462 } SecCmsKEATemplateSelector;
 463
 464 /* ### mwelch - S/MIME KEA parameters. These don't really fit here,
 465                 but I cannot think of a more appropriate place at this time. */
 466 struct SecCmsSMIMEKEAParametersStr {
 467     CSSM_DATA originatorKEAKey; /* sender KEA key (encrypted?) */
 468     CSSM_DATA originatorRA;     /* random number generated by sender */
 469     CSSM_DATA nonSkipjackIV;    /* init'n vector for SkipjackCBC64
 470                                    decryption of KEA key if Skipjack
 471                                    is not the bulk algorithm used on
 472                                    the message */
 473     CSSM_DATA bulkKeySize;      /* if Skipjack is not the bulk
 474                                    algorithm used on the message,
 475                                    and the size of the bulk encryption
 476                                    key is not the same as that of
 477                                    originatorKEAKey (due to padding
 478                                    perhaps), this field will contain
 479                                    the real size of the bulk encryption
 480                                    key. */
 481 };
 482
 483 /*
 484  * *****************************************************************************
 485  * *****************************************************************************
 486  * *****************************************************************************
 487  */
 488
 489 /*
 490  * See comment above about this type not really belonging to CMS.
 491  */
 492 struct SecCmsAttributeStr {
 493     /* The following fields make up an encoded Attribute: */
 494     CSSM_DATA                   type;
 495     CSSM_DATA_PTR *             values; /* data may or may not be encoded */
 496     /* The following fields are not part of an encoded Attribute: */
 497     SECOidData *                typeTag;
 498     Boolean                     encoded;        /* when true, values are encoded */
 499 };
 500
 501
 502 #endif /* _CMSTPRIV_H_ */