def test_fixed_xor(self):
result = '746865206b696420646f6e277420706c6179'
hex_string1 = '1c0111001f010100061a024b53535009181c'
hex_string2 = '686974207468652062756c6c277320657965'
data1 = ByteData(hex_string1, HexConverter())
data2 = ByteData(hex_string2, HexConverter())
data_xor = data1 ^ data2
hex_xor = data_xor.encode(HexConverter())
self.assertEqual(result, hex_xor)
def test_repeating_key_xor_encrypt(self):
result = '0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a26226324272765272a282b2f20'
key = ByteData('ICE', UTF8Converter())
text = ByteData("Burning 'em, if you ain't quick and nimble",
UTF8Converter())
cipher = text.repeating_key_xor(key)
cipher_hex = cipher.encode(HexConverter())
self.assertEqual(result, cipher_hex)
def test_hex_encode(self):
'''Make sure hex encoding works'''
result = '1b37373331363f7818'
byte = bytes([0x1b, 0x37, 0x37, 0x33, 0x31, 0x36, 0x3f, 0x78, 0x18])
hex_string = HexConverter().encode(byte)
self.assertEqual(result, hex_string)
def test_hex_decode(self):
'''Make sure decoding hex works'''
result = bytes([0x1b, 0x37, 0x37, 0x33, 0x31, 0x36, 0x3f, 0x78, 0x18])
hex_string = '1b37373331363f7818'
byte = HexConverter().decode(hex_string)
self.assertEqual(result, byte)
def test_convert_hex_to_base64(self):
result = 'SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t'
hex_string = '49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d'
byte_data = HexConverter().decode(hex_string)
base64_string = Base64Converter().encode(byte_data)
self.assertEqual(result, base64_string)
def test_repeating_key_xor_decrypt(self):
result = "Burning 'em, if you ain't quick and nimble"
key = ByteData('ICE', UTF8Converter())
cipher = ByteData(
'0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a26226324272765272a282b2f20',
HexConverter())
byte_text = cipher.repeating_key_xor(key)
text = byte_text.encode(UTF8Converter())
self.assertEqual(result, text)
def test_detect_aes_in_ecb_mode(self):
result = 'd880619740a8a19b7840a8a31c810a3d08649af70dc06f4fd5d2d69c744cd283e2dd052f6b641dbf' +\
'9d11b0348542bb5708649af70dc06f4fd5d2d69c744cd2839475c9dfdbc1d46597949d9c7e82bf5a' +\
'08649af70dc06f4fd5d2d69c744cd28397a93eab8d6aecd566489154789a6b0308649af70dc06f4f' +\
'd5d2d69c744cd283d403180c98c8f6db1f2a3f9c4040deb0ab51b29933f2c123c58386b06fba186a'
key_size = 16
with open('files/8.txt') as f:
ciphers = f.read().split('\n')[:-1]
for cipher in ciphers:
data = ByteData(cipher, HexConverter())
cipher_data = AesECB(data)
if cipher_data.verify_ecb_mode(key_size):
ecb_cipher = data.encode(HexConverter())
break
self.assertEqual(result, ecb_cipher)
def test_implement_repeating_key_xor(self):
result = ByteData(
'0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a2622632427276527'
+
'2a282b2f20430a652e2c652a3124333a653e2b2027630c692b20283165286326302e27282f',
HexConverter())
key = ByteData('ICE', UTF8Converter())
text = ByteData(
"Burning 'em, if you ain't quick and nimble\nI go crazy when I hear a cymbal",
UTF8Converter())
cipher = text.repeating_key_xor(key)
self.assertEqual(result, cipher)
def test_single_byte_xor_chiper(self):
result = ByteData("Cooking MC's like a pound of bacon",
UTF8Converter())
result_key = ByteData('X', UTF8Converter())
data = ByteData(
'1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736',
HexConverter())
repeating_xor = RepeatingXor(data, EnglishScore())
key = repeating_xor.break_one_byte_key()
best_string = data.repeating_key_xor(key)
self.assertEqual(result, best_string)
self.assertEqual(result_key, key)
def test_detect_single_character_xor(self):
result = ByteData("Now that the party is jumping\n", UTF8Converter())
result_key = ByteData('5', UTF8Converter())
with open('files/4.txt') as f:
score = 10000
best_string = ByteData()
for line in f:
data = ByteData(line.rstrip('\n'), HexConverter())
cipher = RepeatingXor(data, EnglishScore())
temp_key = cipher.break_one_byte_key()
string = data.repeating_key_xor(temp_key)
temp_score = cipher.score
if temp_score > score:
continue
score = temp_score
best_string = string
key = temp_key
self.assertEqual(result, best_string)
self.assertEqual(result_key, key)