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#!/usr/bin/env python
"""Unit tests for M2Crypto.EC, ECDH part.
Copyright (c) 2000 Ng Pheng Siong. All rights reserved.
Portions copyright (c) 2005-2006 Vrije Universiteit Amsterdam. All
rights reserved.
"""
from M2Crypto import EC, Rand
from tests import unittest
from tests.test_ec_curves import tested_curve
class ECDHTestCase(unittest.TestCase):
privkey = 'tests/ec.priv.pem'
def test_init_junk(self):
with self.assertRaises(TypeError):
EC.EC('junk')
def test_compute_key(self):
a = EC.load_key(self.privkey)
b = EC.gen_params(tested_curve[0])
b.gen_key()
ak = a.compute_dh_key(b.pub())
bk = b.compute_dh_key(a.pub())
self.assertEqual(ak, bk)
def test_pubkey_from_der(self):
a = EC.gen_params(tested_curve[0])
a.gen_key()
b = EC.gen_params(tested_curve[0])
b.gen_key()
a_pub_der = a.pub().get_der()
a_pub = EC.pub_key_from_der(a_pub_der)
ak = a.compute_dh_key(b.pub())
bk = b.compute_dh_key(a_pub)
self.assertEqual(ak, bk)
def suite():
return unittest.TestLoader().loadTestsFromTestCase(ECDHTestCase)
if __name__ == '__main__':
Rand.load_file('randpool.dat', -1)
unittest.TextTestRunner().run(suite())
Rand.save_file('randpool.dat')
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