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83 lines
2.8 KiB
83 lines
2.8 KiB
#
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# This file is part of pyasn1-modules software.
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#
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# Created by Russ Housley
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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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import sys
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from pyasn1.codec.der.decoder import decode as der_decode
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from pyasn1.codec.der.encoder import encode as der_encode
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from pyasn1_modules import pem
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from pyasn1_modules import rfc5280
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from pyasn1_modules import rfc5990
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest
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class RSAKEMTestCase(unittest.TestCase):
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pem_text = """\
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MEcGCyqGSIb3DQEJEAMOMDgwKQYHKIGMcQICBDAeMBkGCiuBBRCGSAksAQIwCwYJ
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YIZIAWUDBAIBAgEQMAsGCWCGSAFlAwQBBQ==
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"""
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def setUp(self):
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self.asn1Spec = rfc5280.AlgorithmIdentifier()
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def testDerCodec(self):
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substrate = pem.readBase64fromText(self.pem_text)
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asn1Object, rest = der_decode(substrate, asn1Spec=self.asn1Spec)
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assert not rest
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assert asn1Object.prettyPrint()
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assert der_encode(asn1Object) == substrate
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assert asn1Object['algorithm'] == rfc5990.id_rsa_kem
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rsa_kem_p, rest = der_decode(asn1Object['parameters'],
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asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_rsa_kem])
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assert not rest
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assert rsa_kem_p.prettyPrint()
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assert der_encode(rsa_kem_p) == asn1Object['parameters']
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assert rsa_kem_p['kem']['algorithm'] == rfc5990.id_kem_rsa
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kem_rsa_p, rest = der_decode(rsa_kem_p['kem']['parameters'],
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asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_kem_rsa])
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assert not rest
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assert kem_rsa_p.prettyPrint()
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assert der_encode(kem_rsa_p) == rsa_kem_p['kem']['parameters']
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assert kem_rsa_p['keyLength'] == 16
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assert kem_rsa_p['keyDerivationFunction']['algorithm'] == rfc5990.id_kdf_kdf3
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kdf_p, rest = der_decode(kem_rsa_p['keyDerivationFunction']['parameters'],
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asn1Spec=rfc5280.algorithmIdentifierMap[rfc5990.id_kdf_kdf3])
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assert not rest
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assert kdf_p.prettyPrint()
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assert der_encode(kdf_p) == kem_rsa_p['keyDerivationFunction']['parameters']
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def testOpenTypes(self):
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substrate = pem.readBase64fromText(self.pem_text)
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asn1Object, rest = der_decode(substrate,
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asn1Spec=self.asn1Spec,
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decodeOpenTypes=True)
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assert not rest
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assert asn1Object.prettyPrint()
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assert der_encode(asn1Object) == substrate
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assert asn1Object['algorithm'] == rfc5990.id_rsa_kem
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assert asn1Object['parameters']['kem']['algorithm'] == rfc5990.id_kem_rsa
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assert asn1Object['parameters']['kem']['parameters']['keyLength'] == 16
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suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
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if __name__ == '__main__':
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import sys
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result = unittest.TextTestRunner(verbosity=2).run(suite)
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sys.exit(not result.wasSuccessful())
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