2014-02-21 01:33:23 +00:00
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import unittest
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import common
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import hashlib
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from trezorlib import messages_pb2 as proto
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from mnemonic import Mnemonic
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def generate_entropy(strength, internal_entropy, external_entropy):
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'''
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strength - length of produced seed. One of 128, 192, 256
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random - binary stream of random data from external HRNG
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'''
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if strength not in (128, 192, 256):
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raise Exception("Invalid strength")
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if not internal_entropy:
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raise Exception("Internal entropy is not provided")
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if len(internal_entropy) < 32:
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raise Exception("Internal entropy too short")
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if not external_entropy:
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raise Exception("External entropy is not provided")
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if len(external_entropy) < 32:
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raise Exception("External entropy too short")
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entropy = hashlib.sha256(internal_entropy + external_entropy).digest()
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entropy_stripped = entropy[:strength / 8]
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if len(entropy_stripped) * 8 != strength:
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raise Exception("Entropy length mismatch")
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return entropy_stripped
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class TestDeviceReset(common.TrezorTest):
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def test_reset_device(self):
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# No PIN, no passphrase
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external_entropy = 'zlutoucky kun upel divoke ody' * 2
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strength = 128
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ret = self.client.call_raw(proto.ResetDevice(display_random=False,
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strength=strength,
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passphrase_protection=False,
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pin_protection=False,
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language='english',
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label='test'))
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self.assertIsInstance(ret, proto.ButtonRequest)
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self.client.debug.press_yes()
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ret = self.client.call_raw(proto.ButtonAck())
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self.assertIsInstance(ret, proto.EntropyRequest)
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ret = self.client.call_raw(proto.EntropyAck(entropy=external_entropy))
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# Read internal entropy and generate mnemonic locally
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internal_entropy = self.client.debug.read_entropy()
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entropy = generate_entropy(strength, internal_entropy, external_entropy)
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expected_mnemonic = Mnemonic('english').to_mnemonic(entropy)
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mnemonic = []
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for _ in range(12):
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self.assertIsInstance(ret, proto.ButtonRequest)
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mnemonic.append(self.client.debug.read_word()[0])
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self.client.debug.press_yes()
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self.client.call_raw(proto.ButtonAck())
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mnemonic = ' '.join(mnemonic)
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# Compare that device generated proper mnemonic for given entropies
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self.assertEqual(mnemonic, expected_mnemonic)
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mnemonic = []
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for _ in range(12):
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self.assertIsInstance(ret, proto.ButtonRequest)
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mnemonic.append(self.client.debug.read_word()[0])
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self.client.debug.press_yes()
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resp = self.client.call_raw(proto.ButtonAck())
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self.assertIsInstance(resp, proto.Success)
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mnemonic = ' '.join(mnemonic)
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# Compare that second pass printed out the same mnemonic once again
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self.assertEqual(mnemonic, expected_mnemonic)
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# Check if device is properly initialized
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resp = self.client.call_raw(proto.Initialize())
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self.assertFalse(resp.pin_protection)
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self.assertFalse(resp.passphrase_protection)
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# Do passphrase-protected action, PassphraseRequest should NOT be raised
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resp = self.client.call_raw(proto.Ping(passphrase_protection=True))
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self.assertIsInstance(resp, proto.Success)
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# Do PIN-protected action, PinRequest should NOT be raised
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resp = self.client.call_raw(proto.Ping(pin_protection=True))
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self.assertIsInstance(resp, proto.Success)
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def test_reset_device_pin(self):
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external_entropy = 'zlutoucky kun upel divoke ody' * 2
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strength = 128
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ret = self.client.call_raw(proto.ResetDevice(display_random=True,
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strength=strength,
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passphrase_protection=True,
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pin_protection=True,
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language='english',
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label='test'))
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self.assertIsInstance(ret, proto.ButtonRequest)
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self.client.debug.press_yes()
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ret = self.client.call_raw(proto.ButtonAck())
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self.assertIsInstance(ret, proto.EntropyRequest)
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ret = self.client.call_raw(proto.EntropyAck(entropy=external_entropy))
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self.assertIsInstance(ret, proto.PinMatrixRequest)
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# Enter PIN for first time
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pin_encoded = self.client.debug.encode_pin('654')
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ret = self.client.call_raw(proto.PinMatrixAck(pin=pin_encoded))
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self.assertIsInstance(ret, proto.PinMatrixRequest)
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# Enter PIN for second time
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pin_encoded = self.client.debug.encode_pin('654')
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ret = self.client.call_raw(proto.PinMatrixAck(pin=pin_encoded))
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# Read internal entropy and generate mnemonic locally
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internal_entropy = self.client.debug.read_entropy()
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entropy = generate_entropy(strength, internal_entropy, external_entropy)
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expected_mnemonic = Mnemonic('english').to_mnemonic(entropy)
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mnemonic = []
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for _ in range(12):
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self.assertIsInstance(ret, proto.ButtonRequest)
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mnemonic.append(self.client.debug.read_word()[0])
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self.client.debug.press_yes()
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self.client.call_raw(proto.ButtonAck())
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mnemonic = ' '.join(mnemonic)
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# Compare that device generated proper mnemonic for given entropies
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self.assertEqual(mnemonic, expected_mnemonic)
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mnemonic = []
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for _ in range(12):
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self.assertIsInstance(ret, proto.ButtonRequest)
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mnemonic.append(self.client.debug.read_word()[0])
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self.client.debug.press_yes()
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resp = self.client.call_raw(proto.ButtonAck())
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self.assertIsInstance(resp, proto.Success)
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mnemonic = ' '.join(mnemonic)
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# Compare that second pass printed out the same mnemonic once again
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self.assertEqual(mnemonic, expected_mnemonic)
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# Check if device is properly initialized
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resp = self.client.call_raw(proto.Initialize())
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self.assertTrue(resp.pin_protection)
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self.assertTrue(resp.passphrase_protection)
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# Do passphrase-protected action, PassphraseRequest should be raised
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resp = self.client.call_raw(proto.Ping(passphrase_protection=True))
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self.assertIsInstance(resp, proto.PassphraseRequest)
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# Do PIN-protected action, PinRequest should be raised
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resp = self.client.call_raw(proto.Ping(pin_protection=True))
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self.assertIsInstance(resp, proto.PinMatrixRequest)
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2014-02-22 01:15:21 +00:00
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def test_failed_pin(self):
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external_entropy = 'zlutoucky kun upel divoke ody' * 2
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strength = 128
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ret = self.client.call_raw(proto.ResetDevice(display_random=True,
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strength=strength,
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passphrase_protection=True,
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pin_protection=True,
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language='english',
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label='test'))
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self.assertIsInstance(ret, proto.ButtonRequest)
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self.client.debug.press_yes()
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ret = self.client.call_raw(proto.ButtonAck())
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self.assertIsInstance(ret, proto.EntropyRequest)
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ret = self.client.call_raw(proto.EntropyAck(entropy=external_entropy))
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self.assertIsInstance(ret, proto.PinMatrixRequest)
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# Enter PIN for first time
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pin_encoded = self.client.debug.encode_pin(self.pin4)
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ret = self.client.call_raw(proto.PinMatrixAck(pin=pin_encoded))
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self.assertIsInstance(ret, proto.PinMatrixRequest)
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# Enter PIN for second time
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pin_encoded = self.client.debug.encode_pin(self.pin6)
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ret = self.client.call_raw(proto.PinMatrixAck(pin=pin_encoded))
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self.assertIsInstance(ret, proto.Failure)
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2014-02-21 01:33:23 +00:00
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2014-02-22 01:15:21 +00:00
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def test_already_initialized(self):
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self.setup_mnemonic_nopin_nopassphrase()
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self.assertRaises(Exception, self.client.reset_device, False, 128, True, True, 'label', 'english')
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2014-02-21 01:33:23 +00:00
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if __name__ == '__main__':
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unittest.main()
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