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1#
2# This file is part of pyasn1-modules software.
3#
4# Created by Russ Housley
5# Copyright (c) 2019, Vigil Security, LLC
6# License: http://snmplabs.com/pyasn1/license.html
7#
8
9import sys
10
11from pyasn1.codec.der import decoder as der_decoder
12from pyasn1.codec.der import encoder as der_encoder
13
14from pyasn1.type import univ
15
16from pyasn1_modules import pem
17from pyasn1_modules import rfc3565
18
19try:
20    import unittest2 as unittest
21except ImportError:
22    import unittest
23
24
25class AESKeyWrapTestCase(unittest.TestCase):
26    kw_alg_id_pem_text = "MAsGCWCGSAFlAwQBLQ=="
27
28    def setUp(self):
29        self.asn1Spec = rfc3565.AlgorithmIdentifier()
30
31    def testDerCodec(self):
32        substrate = pem.readBase64fromText(self.kw_alg_id_pem_text)
33        asn1Object, rest = der_decoder.decode(substrate, asn1Spec=self.asn1Spec)
34        assert not rest
35        assert asn1Object.prettyPrint()
36        assert asn1Object[0] == rfc3565.id_aes256_wrap
37        assert der_encoder.encode(asn1Object) == substrate
38
39
40class AESCBCTestCase(unittest.TestCase):
41    aes_alg_id_pem_text = "MB0GCWCGSAFlAwQBKgQQEImWuoUOPwM5mTu1h4oONw=="
42
43    def setUp(self):
44        self.asn1Spec = rfc3565.AlgorithmIdentifier()
45
46    def testDerCodec(self):
47        substrate = pem.readBase64fromText(self.aes_alg_id_pem_text)
48        asn1Object, rest = der_decoder.decode(substrate, asn1Spec=self.asn1Spec)
49        assert not rest
50        assert asn1Object.prettyPrint()
51        assert asn1Object[0] == rfc3565.id_aes256_CBC
52        assert asn1Object[1].isValue
53        assert der_encoder.encode(asn1Object) == substrate
54
55    def testOpenTypes(self):
56        substrate = pem.readBase64fromText(self.aes_alg_id_pem_text)
57        asn1Object, rest = der_decoder.decode(substrate,
58            asn1Spec=self.asn1Spec,
59            decodeOpenTypes=True)
60        assert not rest
61        assert asn1Object.prettyPrint()
62        assert asn1Object[0] == rfc3565.id_aes256_CBC
63        aes_iv = univ.OctetString(hexValue='108996ba850e3f0339993bb5878a0e37')
64        assert asn1Object[1] == aes_iv
65        assert der_encoder.encode(asn1Object) == substrate
66
67
68suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
69
70if __name__ == '__main__':
71    unittest.TextTestRunner(verbosity=2).run(suite)
72