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Diffstat (limited to 'python/pyasn1-modules/pyasn1_modules/rfc2560.py')
| -rw-r--r-- | python/pyasn1-modules/pyasn1_modules/rfc2560.py | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/python/pyasn1-modules/pyasn1_modules/rfc2560.py b/python/pyasn1-modules/pyasn1_modules/rfc2560.py new file mode 100644 index 000000000..0be1091b1 --- /dev/null +++ b/python/pyasn1-modules/pyasn1_modules/rfc2560.py @@ -0,0 +1,171 @@ +# +# OCSP request/response syntax +# +# Derived from a minimal OCSP library (RFC2560) code written by +# Bud P. Bruegger <bud@ancitel.it> +# Copyright: Ancitel, S.p.a, Rome, Italy +# License: BSD +# + +# +# current limitations: +# * request and response works only for a single certificate +# * only some values are parsed out of the response +# * the request does't set a nonce nor signature +# * there is no signature validation of the response +# * dates are left as strings in GeneralizedTime format -- datetime.datetime +# would be nicer +# +from pyasn1.type import tag, namedtype, namedval, univ, constraint, useful +from pyasn1_modules import rfc2459 + +# Start of OCSP module definitions + +# This should be in directory Authentication Framework (X.509) module + +class CRLReason(univ.Enumerated): + namedValues = namedval.NamedValues( + ('unspecified', 0), + ('keyCompromise', 1), + ('cACompromise', 2), + ('affiliationChanged', 3), + ('superseded', 4), + ('cessationOfOperation', 5), + ('certificateHold', 6), + ('removeFromCRL', 8), + ('privilegeWithdrawn', 9), + ('aACompromise', 10) + ) + +# end of directory Authentication Framework (X.509) module + +# This should be in PKIX Certificate Extensions module + +class GeneralName(univ.OctetString): pass + +# end of PKIX Certificate Extensions module + +id_kp_OCSPSigning = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 3, 9)) +id_pkix_ocsp = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1)) +id_pkix_ocsp_basic = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 1)) +id_pkix_ocsp_nonce = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 2)) +id_pkix_ocsp_crl = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 3)) +id_pkix_ocsp_response = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 4)) +id_pkix_ocsp_nocheck = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 5)) +id_pkix_ocsp_archive_cutoff = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 6)) +id_pkix_ocsp_service_locator = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 7)) + +class AcceptableResponses(univ.SequenceOf): + componentType = univ.ObjectIdentifier() + +class ArchiveCutoff(useful.GeneralizedTime): pass + +class UnknownInfo(univ.Null): pass + +class RevokedInfo(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('revocationTime', useful.GeneralizedTime()), + namedtype.OptionalNamedType('revocationReason', CRLReason().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) + ) + +class CertID(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('hashAlgorithm', rfc2459.AlgorithmIdentifier()), + namedtype.NamedType('issuerNameHash', univ.OctetString()), + namedtype.NamedType('issuerKeyHash', univ.OctetString()), + namedtype.NamedType('serialNumber', rfc2459.CertificateSerialNumber()) + ) + +class CertStatus(univ.Choice): + componentType = namedtype.NamedTypes( + namedtype.NamedType('good', univ.Null().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))), + namedtype.NamedType('revoked', RevokedInfo().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))), + namedtype.NamedType('unknown', UnknownInfo().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2))) + ) + +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', rfc2459.Extensions().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))) + ) + +class KeyHash(univ.OctetString): pass + +class ResponderID(univ.Choice): + componentType = namedtype.NamedTypes( + namedtype.NamedType('byName', rfc2459.Name().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))), + namedtype.NamedType('byKey', KeyHash().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2))) + ) + +class Version(univ.Integer): + namedValues = namedval.NamedValues(('v1', 0)) + +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(SingleResponse())), + namedtype.OptionalNamedType('responseExtensions', rfc2459.Extensions().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))) + ) + +class BasicOCSPResponse(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('tbsResponseData', ResponseData()), + namedtype.NamedType('signatureAlgorithm', rfc2459.AlgorithmIdentifier()), + namedtype.NamedType('signature', univ.BitString()), + namedtype.OptionalNamedType('certs', univ.SequenceOf(rfc2459.Certificate()).subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) + ) + +class ResponseBytes(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('responseType', univ.ObjectIdentifier()), + namedtype.NamedType('response', univ.OctetString()) + ) + +class OCSPResponseStatus(univ.Enumerated): + namedValues = namedval.NamedValues( + ('successful', 0), + ('malformedRequest', 1), + ('internalError', 2), + ('tryLater', 3), + ('undefinedStatus', 4), # should never occur + ('sigRequired', 5), + ('unauthorized', 6) + ) + +class OCSPResponse(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('responseStatus', OCSPResponseStatus()), + namedtype.OptionalNamedType('responseBytes', ResponseBytes().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) + ) + +class Request(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('reqCert', CertID()), + namedtype.OptionalNamedType('singleRequestExtensions', rfc2459.Extensions().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))) + ) + +class Signature(univ.Sequence): + componentType = namedtype.NamedTypes( + namedtype.NamedType('signatureAlgorithm', rfc2459.AlgorithmIdentifier()), + namedtype.NamedType('signature', univ.BitString()), + namedtype.OptionalNamedType('certs', univ.SequenceOf(rfc2459.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(Request())), + namedtype.OptionalNamedType('requestExtensions', rfc2459.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))) + ) |