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rfc6960.py
# # This file is part of pyasn1-modules software. # # Created by Russ Housley. # # Copyright (c) 2019, Vigil Security, LLC # License: http://snmplabs.com/pyasn1/license.html # # Online Certificate Status Protocol (OCSP) # # ASN.1 source from: # https://www.rfc-editor.org/rfc/rfc6960.txt # from pyasn1.type import univ, char, namedtype, namedval, tag, constraint, useful from pyasn1_modules import rfc2560 from pyasn1_modules import rfc5280 MAX = float('inf') # Imports from RFC 5280 AlgorithmIdentifier = rfc5280.AlgorithmIdentifier AuthorityInfoAccessSyntax = rfc5280.AuthorityInfoAccessSyntax Certificate = rfc5280.Certificate CertificateSerialNumber = rfc5280.CertificateSerialNumber CRLReason = rfc5280.CRLReason Extensions = rfc5280.Extensions GeneralName = rfc5280.GeneralName Name = rfc5280.Name id_kp = rfc5280.id_kp id_ad_ocsp = rfc5280.id_ad_ocsp # Imports from the original OCSP module in RFC 2560 AcceptableResponses = rfc2560.AcceptableResponses ArchiveCutoff = rfc2560.ArchiveCutoff CertStatus = rfc2560.CertStatus KeyHash = rfc2560.KeyHash OCSPResponse = rfc2560.OCSPResponse OCSPResponseStatus = rfc2560.OCSPResponseStatus ResponseBytes = rfc2560.ResponseBytes RevokedInfo = rfc2560.RevokedInfo UnknownInfo = rfc2560.UnknownInfo Version = rfc2560.Version id_kp_OCSPSigning = rfc2560.id_kp_OCSPSigning id_pkix_ocsp = rfc2560.id_pkix_ocsp id_pkix_ocsp_archive_cutoff = rfc2560.id_pkix_ocsp_archive_cutoff id_pkix_ocsp_basic = rfc2560.id_pkix_ocsp_basic id_pkix_ocsp_crl = rfc2560.id_pkix_ocsp_crl id_pkix_ocsp_nocheck = rfc2560.id_pkix_ocsp_nocheck id_pkix_ocsp_nonce = rfc2560.id_pkix_ocsp_nonce id_pkix_ocsp_response = rfc2560.id_pkix_ocsp_response id_pkix_ocsp_service_locator = rfc2560.id_pkix_ocsp_service_locator # Additional object identifiers id_pkix_ocsp_pref_sig_algs = id_pkix_ocsp + (8, ) id_pkix_ocsp_extended_revoke = id_pkix_ocsp + (9, ) # Updated structures (mostly to improve openTypes support) class CertID(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('hashAlgorithm', AlgorithmIdentifier()), namedtype.NamedType('issuerNameHash', univ.OctetString()), namedtype.NamedType('issuerKeyHash', univ.OctetString()), namedtype.NamedType('serialNumber', CertificateSerialNumber()) ) class SingleResponse(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('certID', CertID()), namedtype.NamedType('certStatus', CertStatus()), namedtype.NamedType('thisUpdate', useful.GeneralizedTime()), namedtype.OptionalNamedType('nextUpdate', useful.GeneralizedTime().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))), namedtype.OptionalNamedType('singleExtensions', Extensions().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))) ) class ResponderID(univ.Choice): componentType = namedtype.NamedTypes( namedtype.NamedType('byName', Name().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))), namedtype.NamedType('byKey', KeyHash().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2))) ) class ResponseData(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.DefaultedNamedType('version', Version('v1').subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))), namedtype.NamedType('responderID', ResponderID()), namedtype.NamedType('producedAt', useful.GeneralizedTime()), namedtype.NamedType('responses', univ.SequenceOf( componentType=SingleResponse())), namedtype.OptionalNamedType('responseExtensions', Extensions().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))) ) class BasicOCSPResponse(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('tbsResponseData', ResponseData()), namedtype.NamedType('signatureAlgorithm', AlgorithmIdentifier()), namedtype.NamedType('signature', univ.BitString()), namedtype.OptionalNamedType('certs', univ.SequenceOf( componentType=Certificate()).subtype(explicitTag=tag.Tag( tag.tagClassContext, tag.tagFormatSimple, 0))) ) class Request(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('reqCert', CertID()), namedtype.OptionalNamedType('singleRequestExtensions', Extensions().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) ) class Signature(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('signatureAlgorithm', AlgorithmIdentifier()), namedtype.NamedType('signature', univ.BitString()), namedtype.OptionalNamedType('certs', univ.SequenceOf( componentType=Certificate()).subtype(explicitTag=tag.Tag( tag.tagClassContext, tag.tagFormatSimple, 0))) ) class TBSRequest(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.DefaultedNamedType('version', Version('v1').subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))), namedtype.OptionalNamedType('requestorName', GeneralName().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))), namedtype.NamedType('requestList', univ.SequenceOf( componentType=Request())), namedtype.OptionalNamedType('requestExtensions', Extensions().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2))) ) class OCSPRequest(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('tbsRequest', TBSRequest()), namedtype.OptionalNamedType('optionalSignature', Signature().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) ) # Previously omitted structure class ServiceLocator(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('issuer', Name()), namedtype.NamedType('locator', AuthorityInfoAccessSyntax()) ) # Additional structures class CrlID(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.OptionalNamedType('crlUrl', char.IA5String().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))), namedtype.OptionalNamedType('crlNum', univ.Integer().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))), namedtype.OptionalNamedType('crlTime', useful.GeneralizedTime().subtype( explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2))) ) class PreferredSignatureAlgorithm(univ.Sequence): componentType = namedtype.NamedTypes( namedtype.NamedType('sigIdentifier', AlgorithmIdentifier()), namedtype.OptionalNamedType('certIdentifier', AlgorithmIdentifier()) ) class PreferredSignatureAlgorithms(univ.SequenceOf): componentType = PreferredSignatureAlgorithm() # Response Type OID to Response Map ocspResponseMap = { id_pkix_ocsp_basic: BasicOCSPResponse(), } # Map of Extension OIDs to Extensions added to the ones # that are in rfc5280.py _certificateExtensionsMapUpdate = { # Certificate Extension id_pkix_ocsp_nocheck: univ.Null(""), # OCSP Request Extensions id_pkix_ocsp_nonce: univ.OctetString(), id_pkix_ocsp_response: AcceptableResponses(), id_pkix_ocsp_service_locator: ServiceLocator(), id_pkix_ocsp_pref_sig_algs: PreferredSignatureAlgorithms(), # OCSP Response Extensions id_pkix_ocsp_crl: CrlID(), id_pkix_ocsp_archive_cutoff: ArchiveCutoff(), id_pkix_ocsp_extended_revoke: univ.Null(""), } rfc5280.certificateExtensionsMap.update(_certificateExtensionsMapUpdate)
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