def detect_xor(file_name):
f = open(file_name, 'r')
d = {}
for line in f:
line = line.rstrip().lstrip()
candidate = decryptor.search_single_byte_xor_key(line)
if candidate is None:
continue
freq = decryptor.analyze_char_freq(candidate)
score = decryptor.score_char_freq(freq)
d[score] = candidate
return d[min(d)]
def test_search_single_byte_xor_key(self):
key, message = decryptor.search_single_byte_xor_key('1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736')
self.assertEqual(message, "Cooking MC's like a pound of bacon")
self.assertEqual(decryptor.search_single_byte_xor_key('0e3647e8592d35514a081243582536ed3de6734059001e3f535ce6271032'), None)
