openssl/crypto/ocsp/ocsp_lcl.h

/*
 * Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
 * project.
 */

/*
 * History: This file was transfered to Richard Levitte from CertCo by Kathy
 * Weinhold in mid-spring 2000 to be included in OpenSSL or released as a
 * patch kit.
 */

/* ====================================================================
 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

/*-  CertID ::= SEQUENCE {
 *       hashAlgorithm            AlgorithmIdentifier,
 *       issuerNameHash     OCTET STRING, -- Hash of Issuer's DN
 *       issuerKeyHash      OCTET STRING, -- Hash of Issuers public key (excluding the tag & length fields)
 *       serialNumber       CertificateSerialNumber }
 */
struct ocsp_cert_id_st {
    X509_ALGOR hashAlgorithm;
    ASN1_OCTET_STRING issuerNameHash;
    ASN1_OCTET_STRING issuerKeyHash;
    ASN1_INTEGER serialNumber;
};

/*-  Request ::=     SEQUENCE {
 *       reqCert                    CertID,
 *       singleRequestExtensions    [0] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_one_request_st {
    OCSP_CERTID *reqCert;
    STACK_OF(X509_EXTENSION) *singleRequestExtensions;
};

/*-  TBSRequest      ::=     SEQUENCE {
 *       version             [0] EXPLICIT Version DEFAULT v1,
 *       requestorName       [1] EXPLICIT GeneralName OPTIONAL,
 *       requestList             SEQUENCE OF Request,
 *       requestExtensions   [2] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_req_info_st {
    ASN1_INTEGER *version;
    GENERAL_NAME *requestorName;
    STACK_OF(OCSP_ONEREQ) *requestList;
    STACK_OF(X509_EXTENSION) *requestExtensions;
};

/*-  Signature       ::=     SEQUENCE {
 *       signatureAlgorithm   AlgorithmIdentifier,
 *       signature            BIT STRING,
 *       certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
 */
struct ocsp_signature_st {
    X509_ALGOR signatureAlgorithm;
    ASN1_BIT_STRING *signature;
    STACK_OF(X509) *certs;
};

/*-  OCSPRequest     ::=     SEQUENCE {
 *       tbsRequest                  TBSRequest,
 *       optionalSignature   [0]     EXPLICIT Signature OPTIONAL }
 */
struct ocsp_request_st {
    OCSP_REQINFO tbsRequest;
    OCSP_SIGNATURE *optionalSignature; /* OPTIONAL */
};

/*-  OCSPResponseStatus ::= ENUMERATED {
 *       successful            (0),      --Response has valid confirmations
 *       malformedRequest      (1),      --Illegal confirmation request
 *       internalError         (2),      --Internal error in issuer
 *       tryLater              (3),      --Try again later
 *                                       --(4) is not used
 *       sigRequired           (5),      --Must sign the request
 *       unauthorized          (6)       --Request unauthorized
 *   }
 */

/*-  ResponseBytes ::=       SEQUENCE {
 *       responseType   OBJECT IDENTIFIER,
 *       response       OCTET STRING }
 */
struct ocsp_resp_bytes_st {
    ASN1_OBJECT *responseType;
    ASN1_OCTET_STRING *response;
};

/*-  OCSPResponse ::= SEQUENCE {
 *      responseStatus         OCSPResponseStatus,
 *      responseBytes          [0] EXPLICIT ResponseBytes OPTIONAL }
 */
struct ocsp_response_st {
    ASN1_ENUMERATED *responseStatus;
    OCSP_RESPBYTES *responseBytes;
};

/*-  ResponderID ::= CHOICE {
 *      byName   [1] Name,
 *      byKey    [2] KeyHash }
 */
struct ocsp_responder_id_st {
    int type;
    union {
        X509_NAME *byName;
        ASN1_OCTET_STRING *byKey;
    } value;
};

/*-  KeyHash ::= OCTET STRING --SHA-1 hash of responder's public key
 *                            --(excluding the tag and length fields)
 */

/*-  RevokedInfo ::= SEQUENCE {
 *       revocationTime              GeneralizedTime,
 *       revocationReason    [0]     EXPLICIT CRLReason OPTIONAL }
 */
struct ocsp_revoked_info_st {
    ASN1_GENERALIZEDTIME *revocationTime;
    ASN1_ENUMERATED *revocationReason;
};

/*-  CertStatus ::= CHOICE {
 *       good                [0]     IMPLICIT NULL,
 *       revoked             [1]     IMPLICIT RevokedInfo,
 *       unknown             [2]     IMPLICIT UnknownInfo }
 */
struct ocsp_cert_status_st {
    int type;
    union {
        ASN1_NULL *good;
        OCSP_REVOKEDINFO *revoked;
        ASN1_NULL *unknown;
    } value;
};

/*-  SingleResponse ::= SEQUENCE {
 *      certID                       CertID,
 *      certStatus                   CertStatus,
 *      thisUpdate                   GeneralizedTime,
 *      nextUpdate           [0]     EXPLICIT GeneralizedTime OPTIONAL,
 *      singleExtensions     [1]     EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_single_response_st {
    OCSP_CERTID *certId;
    OCSP_CERTSTATUS *certStatus;
    ASN1_GENERALIZEDTIME *thisUpdate;
    ASN1_GENERALIZEDTIME *nextUpdate;
    STACK_OF(X509_EXTENSION) *singleExtensions;
};

/*-  ResponseData ::= SEQUENCE {
 *      version              [0] EXPLICIT Version DEFAULT v1,
 *      responderID              ResponderID,
 *      producedAt               GeneralizedTime,
 *      responses                SEQUENCE OF SingleResponse,
 *      responseExtensions   [1] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_response_data_st {
    ASN1_INTEGER *version;
    OCSP_RESPID responderId;
    ASN1_GENERALIZEDTIME *producedAt;
    STACK_OF(OCSP_SINGLERESP) *responses;
    STACK_OF(X509_EXTENSION) *responseExtensions;
};

/*-  BasicOCSPResponse       ::= SEQUENCE {
 *      tbsResponseData      ResponseData,
 *      signatureAlgorithm   AlgorithmIdentifier,
 *      signature            BIT STRING,
 *      certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
 */
  /*
   * Note 1: The value for "signature" is specified in the OCSP rfc2560 as
   * follows: "The value for the signature SHALL be computed on the hash of
   * the DER encoding ResponseData." This means that you must hash the
   * DER-encoded tbsResponseData, and then run it through a crypto-signing
   * function, which will (at least w/RSA) do a hash-'n'-private-encrypt
   * operation.  This seems a bit odd, but that's the spec.  Also note that
   * the data structures do not leave anywhere to independently specify the
   * algorithm used for the initial hash. So, we look at the
   * signature-specification algorithm, and try to do something intelligent.
   * -- Kathy Weinhold, CertCo
   */
  /*
   * Note 2: It seems that the mentioned passage from RFC 2560 (section
   * 4.2.1) is open for interpretation.  I've done tests against another
   * responder, and found that it doesn't do the double hashing that the RFC
   * seems to say one should.  Therefore, all relevant functions take a flag
   * saying which variant should be used.  -- Richard Levitte, OpenSSL team
   * and CeloCom
   */
struct ocsp_basic_response_st {
    OCSP_RESPDATA tbsResponseData;
    X509_ALGOR signatureAlgorithm;
    ASN1_BIT_STRING *signature;
    STACK_OF(X509) *certs;
};

/*-
 * CrlID ::= SEQUENCE {
 *     crlUrl               [0]     EXPLICIT IA5String OPTIONAL,
 *     crlNum               [1]     EXPLICIT INTEGER OPTIONAL,
 *     crlTime              [2]     EXPLICIT GeneralizedTime OPTIONAL }
 */
struct ocsp_crl_id_st {
    ASN1_IA5STRING *crlUrl;
    ASN1_INTEGER *crlNum;
    ASN1_GENERALIZEDTIME *crlTime;
};

/*-
 * ServiceLocator ::= SEQUENCE {
 *      issuer    Name,
 *      locator   AuthorityInfoAccessSyntax OPTIONAL }
 */
struct ocsp_service_locator_st {
    X509_NAME *issuer;
    STACK_OF(ACCESS_DESCRIPTION) *locator;
};