ocspti.h
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:15k
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- /*
- * Private header defining OCSP types.
- *
- * $Id: ocspti.h,v 1.1 2000/03/31 19:43:04 relyea%netscape.com Exp $
- */
- #ifndef _OCSPTI_H_
- #define _OCSPTI_H_
- #include "ocspt.h"
- #include "certt.h"
- #include "plarena.h"
- #include "seccomon.h"
- #include "secoidt.h"
- /*
- * Some notes about naming conventions...
- *
- * The public data types all start with "CERTOCSP" (e.g. CERTOCSPRequest).
- * (Even the public types are opaque, however. Only their names are
- * "exported".)
- *
- * Internal-only data types drop the "CERT" prefix and use only the
- * lower-case "ocsp" (e.g. ocspTBSRequest), for brevity sake.
- *
- * In either case, the base/suffix of the type name usually matches the
- * name as defined in the OCSP specification. The exceptions to this are:
- * - When there is overlap between the "OCSP" or "ocsp" prefix and
- * the name used in the standard. That is, you cannot strip off the
- * "CERTOCSP" or "ocsp" prefix and necessarily get the name of the
- * type as it is defined in the standard; the "real" name will be
- * *either* "OCSPSuffix" or just "Suffix".
- * - When the name in the standard was a little too generic. (e.g. The
- * standard defines "Request" but we call it a "SingleRequest".)
- * In this case a comment above the type definition calls attention
- * to the difference.
- *
- * The definitions laid out in this header file are intended to follow
- * the same order as the definitions in the OCSP specification itself.
- * With the OCSP standard in hand, you should be able to move through
- * this file and follow along. To future modifiers of this file: please
- * try to keep it that way. The only exceptions are the few cases where
- * we need to define a type before it is referenced (e.g. enumerations),
- * whereas in the OCSP specification these are usually defined the other
- * way around (reference before definition).
- */
- /*
- * Forward-declarations of internal-only data structures.
- *
- * These are in alphabetical order (case-insensitive); please keep it that way!
- */
- typedef struct ocspBasicOCSPResponseStr ocspBasicOCSPResponse;
- typedef struct ocspCertStatusStr ocspCertStatus;
- typedef struct ocspResponderIDStr ocspResponderID;
- typedef struct ocspResponseBytesStr ocspResponseBytes;
- typedef struct ocspResponseDataStr ocspResponseData;
- typedef struct ocspRevokedInfoStr ocspRevokedInfo;
- typedef struct ocspServiceLocatorStr ocspServiceLocator;
- typedef struct ocspSignatureStr ocspSignature;
- typedef struct ocspSingleRequestStr ocspSingleRequest;
- typedef struct ocspSingleResponseStr ocspSingleResponse;
- typedef struct ocspTBSRequestStr ocspTBSRequest;
- /*
- * An OCSPRequest; this is what is sent (encoded) to an OCSP responder.
- */
- struct CERTOCSPRequestStr {
- PRArenaPool *arena; /* local; not part of encoding */
- ocspTBSRequest *tbsRequest;
- ocspSignature *optionalSignature;
- };
- /*
- * A TBSRequest; when an OCSPRequest is signed, the encoding of this
- * is what the signature is actually applied to. ("TBS" == To Be Signed)
- * Whether signed or not, however, this structure will be present, and
- * is the "meat" of the OCSPRequest.
- *
- * Note that the "requestorName" field cannot be encoded/decoded in the
- * same pass as the entire request -- it needs to be handled with a special
- * call to convert to/from our internal form of a GeneralName. Thus the
- * "derRequestorName" field, which is the actual DER-encoded bytes.
- *
- * The "extensionHandle" field is used on creation only; it holds
- * in-progress extensions as they are optionally added to the request.
- */
- struct ocspTBSRequestStr {
- SECItem version; /* an INTEGER */
- SECItem *derRequestorName; /* encoded GeneralName; see above */
- CERTGeneralNameList *requestorName; /* local; not part of encoding */
- ocspSingleRequest **requestList;
- CERTCertExtension **requestExtensions;
- void *extensionHandle; /* local; not part of encoding */
- };
- /*
- * This is the actual signature information for an OCSPRequest (applied to
- * the TBSRequest structure) or for a BasicOCSPResponse (applied to a
- * ResponseData structure).
- *
- * Note that the "signature" field itself is a BIT STRING; operations on
- * it need to keep that in mind, converting the length to bytes as needed
- * and back again afterward (so that the length is usually expressing bits).
- *
- * The "cert" field is the signer's certificate. In the case of a received
- * signature, it will be filled in when the signature is verified. In the
- * case of a created signature, it is filled in on creation and will be the
- * cert used to create the signature when the signing-and-encoding occurs,
- * as well as the cert (and its chain) to fill in derCerts if requested.
- *
- * The extra fields cache information about the signature after we have
- * attempted a verification. "wasChecked", if true, means the signature
- * has been checked against the appropriate data and thus that "status"
- * contains the result of that verification. If "status" is not SECSuccess,
- * "failureReason" is a copy of the error code that was set at the time;
- * presumably it tells why the signature verification failed.
- */
- struct ocspSignatureStr {
- SECAlgorithmID signatureAlgorithm;
- SECItem signature; /* a BIT STRING */
- SECItem **derCerts; /* a SEQUENCE OF Certificate */
- CERTCertificate *cert; /* local; not part of encoding */
- PRBool wasChecked; /* local; not part of encoding */
- SECStatus status; /* local; not part of encoding */
- int failureReason; /* local; not part of encoding */
- };
- /*
- * An OCSPRequest contains a SEQUENCE OF these, one for each certificate
- * whose status is being checked.
- *
- * Note that in the OCSP specification this is just called "Request",
- * but since that seemed confusing (vs. an OCSPRequest) and to be more
- * consistent with the parallel type "SingleResponse", I called it a
- * "SingleRequest".
- *
- * XXX figure out how to get rid of that arena -- there must be a way
- */
- struct ocspSingleRequestStr {
- PRArenaPool *arena; /* just a copy of the response arena,
- * needed here for extension handling
- * routines, on creation only */
- CERTOCSPCertID *reqCert;
- CERTCertExtension **singleRequestExtensions;
- };
- /*
- * A CertID is the means of identifying a certificate, used both in requests
- * and in responses.
- *
- * When in a SingleRequest it specifies the certificate to be checked.
- * When in a SingleResponse it is the cert whose status is being given.
- */
- struct CERTOCSPCertIDStr {
- SECAlgorithmID hashAlgorithm;
- SECItem issuerNameHash; /* an OCTET STRING */
- SECItem issuerKeyHash; /* an OCTET STRING */
- SECItem serialNumber; /* an INTEGER */
- };
- /*
- * This describes the value of the responseStatus field in an OCSPResponse.
- * The corresponding ASN.1 definition is:
- *
- * 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
- * }
- */
- typedef enum {
- ocspResponse_successful = 0,
- ocspResponse_malformedRequest = 1,
- ocspResponse_internalError = 2,
- ocspResponse_tryLater = 3,
- ocspResponse_unused = 4,
- ocspResponse_sigRequired = 5,
- ocspResponse_unauthorized = 6,
- ocspResponse_other /* unknown/unrecognized value */
- } ocspResponseStatus;
- /*
- * An OCSPResponse is what is sent (encoded) by an OCSP responder.
- *
- * The field "responseStatus" is the ASN.1 encoded value; the field
- * "statusValue" is simply that same value translated into our local
- * type ocspResponseStatus.
- */
- struct CERTOCSPResponseStr {
- PRArenaPool *arena; /* local; not part of encoding */
- SECItem responseStatus; /* an ENUMERATED, see above */
- ocspResponseStatus statusValue; /* local; not part of encoding */
- ocspResponseBytes *responseBytes; /* only when status is successful */
- };
- /*
- * A ResponseBytes (despite appearances) is what contains the meat
- * of a successful response -- but still in encoded form. The type
- * given as "responseType" tells you how to decode the string.
- *
- * We look at the OID and translate it into our local OID representation
- * "responseTypeTag", and use that value to tell us how to decode the
- * actual response itself. For now the only kind of OCSP response we
- * know about is a BasicOCSPResponse. However, the intention in the
- * OCSP specification is to allow for other response types, so we are
- * building in that flexibility from the start and thus put a pointer
- * to that data structure inside of a union. Whenever OCSP adds more
- * response types, just add them to the union.
- */
- struct ocspResponseBytesStr {
- SECItem responseType; /* an OBJECT IDENTIFIER */
- SECOidTag responseTypeTag; /* local; not part of encoding */
- SECItem response; /* an OCTET STRING */
- union {
- ocspBasicOCSPResponse *basic; /* when type is id-pkix-ocsp-basic */
- } decodedResponse; /* local; not part of encoding */
- };
- /*
- * A BasicOCSPResponse -- when the responseType in a ResponseBytes is
- * id-pkix-ocsp-basic, the "response" OCTET STRING above is the DER
- * encoding of one of these.
- *
- * Note that in the OCSP specification, the signature fields are not
- * part of a separate sub-structure. But since they are the same fields
- * as we define for the signature in a request, it made sense to share
- * the C data structure here and in some shared code to operate on them.
- */
- struct ocspBasicOCSPResponseStr {
- ocspResponseData *tbsResponseData; /* "tbs" == To Be Signed */
- ocspSignature responseSignature;
- };
- /*
- * A ResponseData is the part of a BasicOCSPResponse that is signed
- * (after it is DER encoded). It contains the real details of the response
- * (a per-certificate status).
- */
- struct ocspResponseDataStr {
- SECItem version; /* an INTEGER */
- SECItem derResponderID;
- ocspResponderID *responderID; /* local; not part of encoding */
- SECItem producedAt; /* a GeneralizedTime */
- CERTOCSPSingleResponse **responses;
- CERTCertExtension **responseExtensions;
- };
- /*
- * A ResponderID identifies the responder -- or more correctly, the
- * signer of the response. The ASN.1 definition of a ResponderID is:
- *
- * ResponderID ::= CHOICE {
- * byName [1] EXPLICIT Name,
- * byKey [2] EXPLICIT KeyHash }
- *
- * Because it is CHOICE, the type of identification used and the
- * identification itself are actually encoded together. To represent
- * this same information internally, we explicitly define a type and
- * save it, along with the value, into a data structure.
- */
- typedef enum {
- ocspResponderID_byName,
- ocspResponderID_byKey,
- ocspResponderID_other /* unknown kind of responderID */
- } ocspResponderIDType;
- struct ocspResponderIDStr {
- ocspResponderIDType responderIDType;/* local; not part of encoding */
- union {
- CERTName name; /* when ocspResponderID_byName */
- SECItem keyHash; /* when ocspResponderID_byKey */
- SECItem other; /* when ocspResponderID_other */
- } responderIDValue;
- };
- /*
- * The ResponseData in a BasicOCSPResponse contains a SEQUENCE OF
- * SingleResponse -- one for each certificate whose status is being supplied.
- *
- * XXX figure out how to get rid of that arena -- there must be a way
- */
- struct CERTOCSPSingleResponseStr {
- PRArenaPool *arena; /* just a copy of the response arena,
- * needed here for extension handling
- * routines, on creation only */
- CERTOCSPCertID *certID;
- SECItem derCertStatus;
- ocspCertStatus *certStatus; /* local; not part of encoding */
- SECItem thisUpdate; /* a GeneralizedTime */
- SECItem *nextUpdate; /* a GeneralizedTime */
- CERTCertExtension **singleExtensions;
- };
- /*
- * A CertStatus is the actual per-certificate status. Its ASN.1 definition:
- *
- * CertStatus ::= CHOICE {
- * good [0] IMPLICIT NULL,
- * revoked [1] IMPLICIT RevokedInfo,
- * unknown [2] IMPLICIT UnknownInfo }
- *
- * (where for now UnknownInfo is defined to be NULL but in the
- * future may be replaced with an enumeration).
- *
- * Because it is CHOICE, the status value and its associated information
- * (if any) are actually encoded together. To represent this same
- * information internally, we explicitly define a type and save it,
- * along with the value, into a data structure.
- */
- typedef enum {
- ocspCertStatus_good, /* cert is not revoked */
- ocspCertStatus_revoked, /* cert is revoked */
- ocspCertStatus_unknown, /* cert was unknown to the responder */
- ocspCertStatus_other /* status was not an expected value */
- } ocspCertStatusType;
- /*
- * This is the actual per-certificate status.
- *
- * The "goodInfo" and "unknownInfo" items are only place-holders for a NULL.
- * (Though someday OCSP may replace UnknownInfo with an enumeration that
- * gives more detailed information.)
- */
- struct ocspCertStatusStr {
- ocspCertStatusType certStatusType; /* local; not part of encoding */
- union {
- SECItem *goodInfo; /* when ocspCertStatus_good */
- ocspRevokedInfo *revokedInfo; /* when ocspCertStatus_revoked */
- SECItem *unknownInfo; /* when ocspCertStatus_unknown */
- SECItem *otherInfo; /* when ocspCertStatus_other */
- } certStatusInfo;
- };
- /*
- * A RevokedInfo gives information about a revoked certificate -- when it
- * was revoked and why.
- */
- struct ocspRevokedInfoStr {
- SECItem revocationTime; /* a GeneralizedTime */
- SECItem *revocationReason; /* a CRLReason; ignored for now */
- };
- /*
- * ServiceLocator can be included as one of the singleRequestExtensions.
- * When added, it specifies the (name of the) issuer of the cert being
- * checked, and optionally the value of the AuthorityInfoAccess extension
- * if the cert has one.
- */
- struct ocspServiceLocatorStr {
- CERTName *issuer;
- SECItem locator; /* DER encoded authInfoAccess extension from cert */
- };
- #endif /* _OCSPTI_H_ */