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- #
- # This file is part of pyasn1-modules software.
- #
- # Created by Russ Housley with some assistance from asn1ate v.0.6.0.
- #
- # Copyright (c) 2019, Vigil Security, LLC
- # License: http://snmplabs.com/pyasn1/license.html
- #
- # Using Pre-Shared Key (PSK) in the Cryptographic Message Syntax (CMS)
- #
- # ASN.1 source from:
- # https://www.rfc-editor.org/rfc/rfc8696.txt
- #
-
- from pyasn1.type import constraint
- from pyasn1.type import namedtype
- from pyasn1.type import namedval
- from pyasn1.type import tag
- from pyasn1.type import univ
-
- from pyasn1_modules import rfc5652
-
- MAX = float('inf')
-
-
- id_ori = univ.ObjectIdentifier('1.2.840.113549.1.9.16.13')
-
- id_ori_keyTransPSK = univ.ObjectIdentifier('1.2.840.113549.1.9.16.13.1')
-
- id_ori_keyAgreePSK = univ.ObjectIdentifier('1.2.840.113549.1.9.16.13.2')
-
-
- class PreSharedKeyIdentifier(univ.OctetString):
- pass
-
-
- class KeyTransRecipientInfos(univ.SequenceOf):
- componentType = rfc5652.KeyTransRecipientInfo()
-
-
- class KeyTransPSKRecipientInfo(univ.Sequence):
- componentType = namedtype.NamedTypes(
- namedtype.NamedType('version',
- rfc5652.CMSVersion()),
- namedtype.NamedType('pskid',
- PreSharedKeyIdentifier()),
- namedtype.NamedType('kdfAlgorithm',
- rfc5652.KeyDerivationAlgorithmIdentifier()),
- namedtype.NamedType('keyEncryptionAlgorithm',
- rfc5652.KeyEncryptionAlgorithmIdentifier()),
- namedtype.NamedType('ktris',
- KeyTransRecipientInfos()),
- namedtype.NamedType('encryptedKey',
- rfc5652.EncryptedKey())
- )
-
-
- class KeyAgreePSKRecipientInfo(univ.Sequence):
- componentType = namedtype.NamedTypes(
- namedtype.NamedType('version',
- rfc5652.CMSVersion()),
- namedtype.NamedType('pskid',
- PreSharedKeyIdentifier()),
- namedtype.NamedType('originator',
- rfc5652.OriginatorIdentifierOrKey().subtype(explicitTag=tag.Tag(
- tag.tagClassContext, tag.tagFormatConstructed, 0))),
- namedtype.OptionalNamedType('ukm',
- rfc5652.UserKeyingMaterial().subtype(explicitTag=tag.Tag(
- tag.tagClassContext, tag.tagFormatSimple, 1))),
- namedtype.NamedType('kdfAlgorithm',
- rfc5652.KeyDerivationAlgorithmIdentifier()),
- namedtype.NamedType('keyEncryptionAlgorithm',
- rfc5652.KeyEncryptionAlgorithmIdentifier()),
- namedtype.NamedType('recipientEncryptedKeys',
- rfc5652.RecipientEncryptedKeys())
- )
-
-
- class CMSORIforPSKOtherInfo(univ.Sequence):
- componentType = namedtype.NamedTypes(
- namedtype.NamedType('psk',
- univ.OctetString()),
- namedtype.NamedType('keyMgmtAlgType',
- univ.Enumerated(namedValues=namedval.NamedValues(
- ('keyTrans', 5), ('keyAgree', 10)))),
- namedtype.NamedType('keyEncryptionAlgorithm',
- rfc5652.KeyEncryptionAlgorithmIdentifier()),
- namedtype.NamedType('pskLength',
- univ.Integer().subtype(
- subtypeSpec=constraint.ValueRangeConstraint(1, MAX))),
- namedtype.NamedType('kdkLength',
- univ.Integer().subtype(
- subtypeSpec=constraint.ValueRangeConstraint(1, MAX)))
- )
-
-
- # Update the CMS Other Recipient Info map in rfc5652.py
-
- _otherRecipientInfoMapUpdate = {
- id_ori_keyTransPSK: KeyTransPSKRecipientInfo(),
- id_ori_keyAgreePSK: KeyAgreePSKRecipientInfo(),
- }
-
- rfc5652.otherRecipientInfoMap.update(_otherRecipientInfoMapUpdate)
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