295 lines
9.4 KiB
Python
295 lines
9.4 KiB
Python
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#
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# This file is part of pyasn1-modules software.
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#
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# Copyright (c) 2005-2018, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pyasn1/license.html
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#
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# PKCS#7 message syntax
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#
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# ASN.1 source from:
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# https://opensource.apple.com/source/Security/Security-55179.1/libsecurity_asn1/asn1/pkcs7.asn.auto.html
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#
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# Sample captures from:
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# openssl crl2pkcs7 -nocrl -certfile cert1.cer -out outfile.p7b
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#
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from pyasn1_modules.rfc2459 import *
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class Attribute(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('type', AttributeType()),
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namedtype.NamedType('values', univ.SetOf(componentType=AttributeValue()))
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)
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class AttributeValueAssertion(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('attributeType', AttributeType()),
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namedtype.NamedType('attributeValue', AttributeValue(),
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openType=opentype.OpenType('type', certificateAttributesMap))
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)
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pkcs_7 = univ.ObjectIdentifier('1.2.840.113549.1.7')
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data = univ.ObjectIdentifier('1.2.840.113549.1.7.1')
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signedData = univ.ObjectIdentifier('1.2.840.113549.1.7.2')
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envelopedData = univ.ObjectIdentifier('1.2.840.113549.1.7.3')
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signedAndEnvelopedData = univ.ObjectIdentifier('1.2.840.113549.1.7.4')
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digestedData = univ.ObjectIdentifier('1.2.840.113549.1.7.5')
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encryptedData = univ.ObjectIdentifier('1.2.840.113549.1.7.6')
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class ContentType(univ.ObjectIdentifier):
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pass
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class ContentEncryptionAlgorithmIdentifier(AlgorithmIdentifier):
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pass
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class EncryptedContent(univ.OctetString):
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pass
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contentTypeMap = {}
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class EncryptedContentInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('contentType', ContentType()),
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namedtype.NamedType('contentEncryptionAlgorithm', ContentEncryptionAlgorithmIdentifier()),
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namedtype.OptionalNamedType(
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'encryptedContent', EncryptedContent().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0)
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),
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openType=opentype.OpenType('contentType', contentTypeMap)
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)
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)
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class Version(univ.Integer): # overrides x509.Version
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pass
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class EncryptedData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('encryptedContentInfo', EncryptedContentInfo())
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)
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class DigestAlgorithmIdentifier(AlgorithmIdentifier):
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pass
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class DigestAlgorithmIdentifiers(univ.SetOf):
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componentType = DigestAlgorithmIdentifier()
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class Digest(univ.OctetString):
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pass
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class ContentInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('contentType', ContentType()),
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namedtype.OptionalNamedType(
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'content',
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univ.Any().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0)),
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openType=opentype.OpenType('contentType', contentTypeMap)
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)
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)
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class DigestedData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('digestAlgorithm', DigestAlgorithmIdentifier()),
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namedtype.NamedType('contentInfo', ContentInfo()),
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namedtype.NamedType('digest', Digest())
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)
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class IssuerAndSerialNumber(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('issuer', Name()),
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namedtype.NamedType('serialNumber', CertificateSerialNumber())
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)
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class KeyEncryptionAlgorithmIdentifier(AlgorithmIdentifier):
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pass
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class EncryptedKey(univ.OctetString):
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pass
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class RecipientInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('issuerAndSerialNumber', IssuerAndSerialNumber()),
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namedtype.NamedType('keyEncryptionAlgorithm', KeyEncryptionAlgorithmIdentifier()),
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namedtype.NamedType('encryptedKey', EncryptedKey())
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)
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class RecipientInfos(univ.SetOf):
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componentType = RecipientInfo()
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class Attributes(univ.SetOf):
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componentType = Attribute()
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class ExtendedCertificateInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('certificate', Certificate()),
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namedtype.NamedType('attributes', Attributes())
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)
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class SignatureAlgorithmIdentifier(AlgorithmIdentifier):
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pass
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class Signature(univ.BitString):
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pass
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class ExtendedCertificate(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('extendedCertificateInfo', ExtendedCertificateInfo()),
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namedtype.NamedType('signatureAlgorithm', SignatureAlgorithmIdentifier()),
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namedtype.NamedType('signature', Signature())
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)
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class ExtendedCertificateOrCertificate(univ.Choice):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('certificate', Certificate()),
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namedtype.NamedType('extendedCertificate', ExtendedCertificate().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0)))
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)
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class ExtendedCertificatesAndCertificates(univ.SetOf):
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componentType = ExtendedCertificateOrCertificate()
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class SerialNumber(univ.Integer):
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pass
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class CRLEntry(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('userCertificate', SerialNumber()),
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namedtype.NamedType('revocationDate', useful.UTCTime())
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)
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class TBSCertificateRevocationList(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('signature', AlgorithmIdentifier()),
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namedtype.NamedType('issuer', Name()),
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namedtype.NamedType('lastUpdate', useful.UTCTime()),
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namedtype.NamedType('nextUpdate', useful.UTCTime()),
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namedtype.OptionalNamedType('revokedCertificates', univ.SequenceOf(componentType=CRLEntry()))
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)
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class CertificateRevocationList(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('tbsCertificateRevocationList', TBSCertificateRevocationList()),
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namedtype.NamedType('signatureAlgorithm', AlgorithmIdentifier()),
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namedtype.NamedType('signature', univ.BitString())
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)
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class CertificateRevocationLists(univ.SetOf):
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componentType = CertificateRevocationList()
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class DigestEncryptionAlgorithmIdentifier(AlgorithmIdentifier):
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pass
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class EncryptedDigest(univ.OctetString):
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pass
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class SignerInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('issuerAndSerialNumber', IssuerAndSerialNumber()),
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namedtype.NamedType('digestAlgorithm', DigestAlgorithmIdentifier()),
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namedtype.OptionalNamedType('authenticatedAttributes', Attributes().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0))),
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namedtype.NamedType('digestEncryptionAlgorithm', DigestEncryptionAlgorithmIdentifier()),
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namedtype.NamedType('encryptedDigest', EncryptedDigest()),
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namedtype.OptionalNamedType('unauthenticatedAttributes', Attributes().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1)))
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)
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class SignerInfos(univ.SetOf):
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componentType = SignerInfo()
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class SignedAndEnvelopedData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('recipientInfos', RecipientInfos()),
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namedtype.NamedType('digestAlgorithms', DigestAlgorithmIdentifiers()),
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namedtype.NamedType('encryptedContentInfo', EncryptedContentInfo()),
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namedtype.OptionalNamedType('certificates', ExtendedCertificatesAndCertificates().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0))),
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namedtype.OptionalNamedType('crls', CertificateRevocationLists().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1))),
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namedtype.NamedType('signerInfos', SignerInfos())
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)
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class EnvelopedData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('recipientInfos', RecipientInfos()),
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namedtype.NamedType('encryptedContentInfo', EncryptedContentInfo())
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)
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class DigestInfo(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('digestAlgorithm', DigestAlgorithmIdentifier()),
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namedtype.NamedType('digest', Digest())
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)
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class SignedData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('digestAlgorithms', DigestAlgorithmIdentifiers()),
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namedtype.NamedType('contentInfo', ContentInfo()),
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namedtype.OptionalNamedType('certificates', ExtendedCertificatesAndCertificates().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0))),
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namedtype.OptionalNamedType('crls', CertificateRevocationLists().subtype(
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implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1))),
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namedtype.NamedType('signerInfos', SignerInfos())
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)
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class Data(univ.OctetString):
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pass
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_contentTypeMapUpdate = {
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data: Data(),
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signedData: SignedData(),
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envelopedData: EnvelopedData(),
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signedAndEnvelopedData: SignedAndEnvelopedData(),
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digestedData: DigestedData(),
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encryptedData: EncryptedData()
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}
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contentTypeMap.update(_contentTypeMapUpdate)
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