def test_get_clear_pin_improper_length(self):
with self.assertRaisesRegex(ValueError, 'Incorrect PIN length: 223'):
get_clear_pin(b'DF1267EEDCBA9876', b'881123456789')
def test_get_clear_pin_pin_length_9(self):
with self.assertRaisesRegex(ValueError, 'Incorrect PIN length: 9'):
get_clear_pin(b'091267EEDCBA9876', b'881123456789')
def test_get_clear_pin_1234(self):
self.assertEqual(get_clear_pin(b'0412BCEEDCBA9876', b'881123456789'),
b'1234')
def test_get_clear_pin_non_numeric(self):
with self.assertRaisesRegex(ValueError,
'PIN contains non-numeric characters'):
get_clear_pin(b'041267EEDCBA9876', b'881123456789')
def verify_pin(self, request):
"""
Get response to DC or EC command
"""
response = OutgoingMessage(data=None, header=self.header)
command_code = request.get_command_code()
if command_code == b'DC':
response.set_response_code('DD')
key_type = 'TPK'
elif command_code == b'EC':
response.set_response_code('ED')
key_type = 'ZPK'
if not self.check_key_parity(request.get(key_type)):
self._debug_trace(key_type + ' parity error')
if self.approve_all:
self._debug_trace(
'Forced approval as --approve-all option set')
response.set_error_code('00')
else:
response.set_error_code('10')
return response
if not self.check_key_parity(request.get('PVK Pair')):
self._debug_trace('PVK parity error')
if self.approve_all:
self._debug_trace(
'Forced approval as --approve-all option set')
response.set_error_code('00')
else:
response.set_error_code('11')
return response
if len(request.get('PVK Pair')) != 32:
self._debug_trace('PVK not double length')
if self.approve_all:
self._debug_trace(
'Forced approval as --approve-all option set')
response.set_error_code('00')
else:
response.set_error_code('27')
return response
decrypted_pinblock = self._decrypt_pinblock(request.get('PIN block'),
request.get(key_type))
self._debug_trace('Decrypted pinblock: {}'.format(
decrypted_pinblock.decode('utf-8')))
try:
pin = get_clear_pin(decrypted_pinblock,
request.get('Account Number'))
pvv = get_visa_pvv(request.get('Account Number'),
request.get('PVKI'), pin[:4],
request.get('PVK Pair'))
if pvv == request.get('PVV'):
response.set_error_code('00')
else:
self._debug_trace('PVV mismatch: {} != {}'.format(
pvv.decode('utf-8'),
request.get('PVV').decode('utf-8')))
if self.approve_all:
self._debug_trace(
'Forced approval as --approve-all option set')
response.set_error_code('00')
else:
response.set_error_code('01')
return response
except ValueError as err:
self._debug_trace(err)
if self.approve_all:
self._debug_trace(
'Forced approval as --approve-all option set')
response.set_error_code('00')
else:
response.set_error_code('01')
return response