50 lines
1.5 KiB
Python
50 lines
1.5 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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# Created by Russ Housley with assistance from asn1ate v.0.6.0.
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#
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# Copyright (c) 2019, Vigil Security, LLC
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# License: http://snmplabs.com/pyasn1/license.html
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#
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#The scrypt Password-Based Key Derivation Function
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#
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# ASN.1 source from:
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# https://www.rfc-editor.org/rfc/rfc8520.txt
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# https://www.rfc-editor.org/errata/eid5871
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#
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from pyasn1.type import constraint
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from pyasn1.type import namedtype
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from pyasn1.type import univ
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from pyasn1_modules import rfc5280
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MAX = float('inf')
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id_scrypt = univ.ObjectIdentifier('1.3.6.1.4.1.11591.4.11')
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class Scrypt_params(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('salt',
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univ.OctetString()),
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namedtype.NamedType('costParameter',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(1, MAX))),
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namedtype.NamedType('blockSize',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(1, MAX))),
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namedtype.NamedType('parallelizationParameter',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(1, MAX))),
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namedtype.OptionalNamedType('keyLength',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(1, MAX)))
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)
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# Update the Algorithm Identifier map in rfc5280.py
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_algorithmIdentifierMapUpdate = {
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id_scrypt: Scrypt_params(),
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}
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rfc5280.algorithmIdentifierMap.update(_algorithmIdentifierMapUpdate)
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