238 lines
5.4 KiB
Python
238 lines
5.4 KiB
Python
#
|
|
# This file is part of pyasn1-modules software.
|
|
#
|
|
# Created by Russ Housley with assistance from asn1ate v.0.6.0.
|
|
#
|
|
# Copyright (c) 2019, Vigil Security, LLC
|
|
# License: http://snmplabs.com/pyasn1/license.html
|
|
#
|
|
# Use of the RSA-KEM Key Transport Algorithm in the CMS
|
|
#
|
|
# ASN.1 source from:
|
|
# https://www.rfc-editor.org/rfc/rfc5990.txt
|
|
#
|
|
|
|
from pyasn1.type import constraint
|
|
from pyasn1.type import namedtype
|
|
from pyasn1.type import univ
|
|
|
|
from pyasn1_modules import rfc5280
|
|
|
|
MAX = float('inf')
|
|
|
|
def _OID(*components):
|
|
output = []
|
|
for x in tuple(components):
|
|
if isinstance(x, univ.ObjectIdentifier):
|
|
output.extend(list(x))
|
|
else:
|
|
output.append(int(x))
|
|
return univ.ObjectIdentifier(output)
|
|
|
|
|
|
# Imports from RFC 5280
|
|
|
|
AlgorithmIdentifier = rfc5280.AlgorithmIdentifier
|
|
|
|
|
|
# Useful types and definitions
|
|
|
|
class NullParms(univ.Null):
|
|
pass
|
|
|
|
|
|
# Object identifier arcs
|
|
|
|
is18033_2 = _OID(1, 0, 18033, 2)
|
|
|
|
nistAlgorithm = _OID(2, 16, 840, 1, 101, 3, 4)
|
|
|
|
pkcs_1 = _OID(1, 2, 840, 113549, 1, 1)
|
|
|
|
x9_44 = _OID(1, 3, 133, 16, 840, 9, 44)
|
|
|
|
x9_44_components = _OID(x9_44, 1)
|
|
|
|
|
|
# Types for algorithm identifiers
|
|
|
|
class Camellia_KeyWrappingScheme(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class DataEncapsulationMechanism(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class KDF2_HashFunction(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class KDF3_HashFunction(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class KeyDerivationFunction(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class KeyEncapsulationMechanism(AlgorithmIdentifier):
|
|
pass
|
|
|
|
class X9_SymmetricKeyWrappingScheme(AlgorithmIdentifier):
|
|
pass
|
|
|
|
|
|
# RSA-KEM Key Transport Algorithm
|
|
|
|
id_rsa_kem = _OID(1, 2, 840, 113549, 1, 9, 16, 3, 14)
|
|
|
|
|
|
class GenericHybridParameters(univ.Sequence):
|
|
pass
|
|
|
|
GenericHybridParameters.componentType = namedtype.NamedTypes(
|
|
namedtype.NamedType('kem', KeyEncapsulationMechanism()),
|
|
namedtype.NamedType('dem', DataEncapsulationMechanism())
|
|
)
|
|
|
|
|
|
rsa_kem = AlgorithmIdentifier()
|
|
rsa_kem['algorithm'] = id_rsa_kem
|
|
rsa_kem['parameters'] = GenericHybridParameters()
|
|
|
|
|
|
# KEM-RSA Key Encapsulation Mechanism
|
|
|
|
id_kem_rsa = _OID(is18033_2, 2, 4)
|
|
|
|
|
|
class KeyLength(univ.Integer):
|
|
pass
|
|
|
|
KeyLength.subtypeSpec = constraint.ValueRangeConstraint(1, MAX)
|
|
|
|
|
|
class RsaKemParameters(univ.Sequence):
|
|
pass
|
|
|
|
RsaKemParameters.componentType = namedtype.NamedTypes(
|
|
namedtype.NamedType('keyDerivationFunction', KeyDerivationFunction()),
|
|
namedtype.NamedType('keyLength', KeyLength())
|
|
)
|
|
|
|
|
|
kem_rsa = AlgorithmIdentifier()
|
|
kem_rsa['algorithm'] = id_kem_rsa
|
|
kem_rsa['parameters'] = RsaKemParameters()
|
|
|
|
|
|
# Key Derivation Functions
|
|
|
|
id_kdf_kdf2 = _OID(x9_44_components, 1)
|
|
|
|
id_kdf_kdf3 = _OID(x9_44_components, 2)
|
|
|
|
|
|
kdf2 = AlgorithmIdentifier()
|
|
kdf2['algorithm'] = id_kdf_kdf2
|
|
kdf2['parameters'] = KDF2_HashFunction()
|
|
|
|
kdf3 = AlgorithmIdentifier()
|
|
kdf3['algorithm'] = id_kdf_kdf3
|
|
kdf3['parameters'] = KDF3_HashFunction()
|
|
|
|
|
|
# Hash Functions
|
|
|
|
id_sha1 = _OID(1, 3, 14, 3, 2, 26)
|
|
|
|
id_sha224 = _OID(2, 16, 840, 1, 101, 3, 4, 2, 4)
|
|
|
|
id_sha256 = _OID(2, 16, 840, 1, 101, 3, 4, 2, 1)
|
|
|
|
id_sha384 = _OID(2, 16, 840, 1, 101, 3, 4, 2, 2)
|
|
|
|
id_sha512 = _OID(2, 16, 840, 1, 101, 3, 4, 2, 3)
|
|
|
|
|
|
sha1 = AlgorithmIdentifier()
|
|
sha1['algorithm'] = id_sha1
|
|
sha1['parameters'] = univ.Null("")
|
|
|
|
sha224 = AlgorithmIdentifier()
|
|
sha224['algorithm'] = id_sha224
|
|
sha224['parameters'] = univ.Null("")
|
|
|
|
sha256 = AlgorithmIdentifier()
|
|
sha256['algorithm'] = id_sha256
|
|
sha256['parameters'] = univ.Null("")
|
|
|
|
sha384 = AlgorithmIdentifier()
|
|
sha384['algorithm'] = id_sha384
|
|
sha384['parameters'] = univ.Null("")
|
|
|
|
sha512 = AlgorithmIdentifier()
|
|
sha512['algorithm'] = id_sha512
|
|
sha512['parameters'] = univ.Null("")
|
|
|
|
|
|
# Symmetric Key-Wrapping Schemes
|
|
|
|
id_aes128_Wrap = _OID(nistAlgorithm, 1, 5)
|
|
|
|
id_aes192_Wrap = _OID(nistAlgorithm, 1, 25)
|
|
|
|
id_aes256_Wrap = _OID(nistAlgorithm, 1, 45)
|
|
|
|
id_alg_CMS3DESwrap = _OID(1, 2, 840, 113549, 1, 9, 16, 3, 6)
|
|
|
|
id_camellia128_Wrap = _OID(1, 2, 392, 200011, 61, 1, 1, 3, 2)
|
|
|
|
id_camellia192_Wrap = _OID(1, 2, 392, 200011, 61, 1, 1, 3, 3)
|
|
|
|
id_camellia256_Wrap = _OID(1, 2, 392, 200011, 61, 1, 1, 3, 4)
|
|
|
|
|
|
aes128_Wrap = AlgorithmIdentifier()
|
|
aes128_Wrap['algorithm'] = id_aes128_Wrap
|
|
# aes128_Wrap['parameters'] are absent
|
|
|
|
aes192_Wrap = AlgorithmIdentifier()
|
|
aes192_Wrap['algorithm'] = id_aes128_Wrap
|
|
# aes192_Wrap['parameters'] are absent
|
|
|
|
aes256_Wrap = AlgorithmIdentifier()
|
|
aes256_Wrap['algorithm'] = id_sha256
|
|
# aes256_Wrap['parameters'] are absent
|
|
|
|
tdes_Wrap = AlgorithmIdentifier()
|
|
tdes_Wrap['algorithm'] = id_alg_CMS3DESwrap
|
|
tdes_Wrap['parameters'] = univ.Null("")
|
|
|
|
camellia128_Wrap = AlgorithmIdentifier()
|
|
camellia128_Wrap['algorithm'] = id_camellia128_Wrap
|
|
# camellia128_Wrap['parameters'] are absent
|
|
|
|
camellia192_Wrap = AlgorithmIdentifier()
|
|
camellia192_Wrap['algorithm'] = id_camellia192_Wrap
|
|
# camellia192_Wrap['parameters'] are absent
|
|
|
|
camellia256_Wrap = AlgorithmIdentifier()
|
|
camellia256_Wrap['algorithm'] = id_camellia256_Wrap
|
|
# camellia256_Wrap['parameters'] are absent
|
|
|
|
|
|
# Update the Algorithm Identifier map in rfc5280.py.
|
|
# Note that the ones that must not have parameters are not added to the map.
|
|
|
|
_algorithmIdentifierMapUpdate = {
|
|
id_rsa_kem: GenericHybridParameters(),
|
|
id_kem_rsa: RsaKemParameters(),
|
|
id_kdf_kdf2: KDF2_HashFunction(),
|
|
id_kdf_kdf3: KDF3_HashFunction(),
|
|
id_sha1: univ.Null(),
|
|
id_sha224: univ.Null(),
|
|
id_sha256: univ.Null(),
|
|
id_sha384: univ.Null(),
|
|
id_sha512: univ.Null(),
|
|
id_alg_CMS3DESwrap: univ.Null(),
|
|
}
|
|
|
|
rfc5280.algorithmIdentifierMap.update(_algorithmIdentifierMapUpdate)
|