def test_reveal(self):
byte = 234213
hidden_data = 9
number_of_bad_bits = 15
bad_byte = byte_tools.hide_data(byte, hidden_data, number_of_bad_bits)
released_data = byte_tools.reveal_data(bad_byte, number_of_bad_bits)
self.assertEqual(hidden_data, released_data)
def _iter_hidden_bits(self, order_num, number_of_bad_bits=1):
sample_num = 0
sample_id = 0
order_inspector = ORDER_INSPECTORS[order_num](self.container_space())
while sample_num != self.container_space():
bits = byte_tools.reveal_data(self[sample_id], number_of_bad_bits)
for pos in bin(bits)[2:].rjust(number_of_bad_bits, '0'):
yield int(pos)
sample_num += 1
sample_id = order_inspector.next()