1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: https://www.pysnmp.com/pyasn1/license.html
#
import sys
import unittest
from pyasn1.codec.der.decoder import decode as der_decoder
from pyasn1.codec.der.encoder import encode as der_encoder
from pyasn1_modules import pem, rfc5280, rfc5990
class RSAKEMTestCase(unittest.TestCase):
pem_text = """\
MEcGCyqGSIb3DQEJEAMOMDgwKQYHKIGMcQICBDAeMBkGCiuBBRCGSAksAQIwCwYJ
YIZIAWUDBAIBAgEQMAsGCWCGSAFlAwQBBQ==
"""
def setUp(self):
self.asn1Spec = rfc5280.AlgorithmIdentifier()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertEqual(rfc5990.id_rsa_kem, asn1Object["algorithm"])
rsa_kem_p, rest = der_decoder(
asn1Object["parameters"],
asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_rsa_kem],
)
self.assertFalse(rest)
self.assertTrue(rsa_kem_p.prettyPrint())
self.assertEqual(asn1Object["parameters"], der_encoder(rsa_kem_p))
self.assertEqual(rfc5990.id_kem_rsa, rsa_kem_p["kem"]["algorithm"])
kem_rsa_p, rest = der_decoder(
rsa_kem_p["kem"]["parameters"],
asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_kem_rsa],
)
self.assertFalse(rest)
self.assertTrue(kem_rsa_p.prettyPrint())
self.assertEqual(rsa_kem_p["kem"]["parameters"], der_encoder(kem_rsa_p))
self.assertEqual(16, kem_rsa_p["keyLength"])
self.assertEqual(
rfc5990.id_kdf_kdf3, kem_rsa_p["keyDerivationFunction"]["algorithm"]
)
kdf_p, rest = der_decoder(
kem_rsa_p["keyDerivationFunction"]["parameters"],
asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_kdf_kdf3],
)
self.assertFalse(rest)
self.assertTrue(kdf_p.prettyPrint())
self.assertEqual(
kem_rsa_p["keyDerivationFunction"]["parameters"], der_encoder(kdf_p)
)
def testOpenTypes(self):
substrate = pem.readBase64fromText(self.pem_text)
asn1Object, rest = der_decoder(
substrate, asn1Spec=self.asn1Spec, decodeOpenTypes=True
)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertEqual(rfc5990.id_rsa_kem, asn1Object["algorithm"])
self.assertEqual(
rfc5990.id_kem_rsa, asn1Object["parameters"]["kem"]["algorithm"]
)
self.assertEqual(16, asn1Object["parameters"]["kem"]["parameters"]["keyLength"])
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == "__main__":
result = unittest.TextTestRunner(verbosity=2).run(suite)
sys.exit(not result.wasSuccessful())
|
