def c3():
INPUT = ('1b37373331363f78151b7f2b783431333d' +
'78397828372d363c78373e783a393b3736')
inputbytes = crypto.hex_to_bytes(INPUT)
keyrange = [[byte] for byte in range(0, 255)]
keybytes, text = crypto.brute_xor(inputbytes, keyrange)
print('Decoded text: %r' % text)
def c3():
INPUT = ('1b37373331363f78151b7f2b783431333d' +
'78397828372d363c78373e783a393b3736')
inputbytes = crypto.hex_to_bytes(INPUT)
keyrange = [[byte] for byte in range(0, 255)]
keybytes, text = crypto.brute_xor(inputbytes, keyrange)
print('Decoded text: %r' % text)
def challenge_3():
hex_string = "1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736"
cipher_bytes = crypto.hex_to_bytes(hex_string)
candidate_bytes = [[byte] for byte in range(0, 255)]
result = crypto.brute_single_xor(cipher_bytes, candidate_bytes)
print("Plaintext: %s" % result[1])
def c3():
EXAMPLE_INPUT = '1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736'
ciphertext = crypto.hex_to_bytes(EXAMPLE_INPUT)
potential_keys = [[b] for b in range(0, 255)]
key, plain = crypto.brute_xor(ciphertext, potential_keys)
print('Key: {0}'.format(key))
print('Plaintext: {0}'.format(plain))
def c4():
texts = []
keys = [[b] for b in range(0, 255)]
for line in open('inputs/4.txt').readlines():
line = line.strip()
_, text = crypto.brute_xor(crypto.hex_to_bytes(line), keys)
if text:
texts.append(text)
best = max(texts, key=textutils.probability_english)
print(best)
def c4():
texts = []
keyrange = [[byte] for byte in range(0, 255)]
for line in open('inputs/4.txt').readlines():
line = line.strip()
if not line:
continue
key, text = crypto.brute_xor(crypto.hex_to_bytes(line), keyrange)
if text: texts.append(text)
best_text = max(texts, key=textutil.english_probability)
print('Decoded text: %r' % best_text)
def c4():
texts = []
keyrange = [[byte] for byte in range(0, 255)]
for line in open('inputs/4.txt').readlines():
line = line.strip()
if not line:
continue
key, text = crypto.brute_xor(crypto.hex_to_bytes(line), keyrange)
if text: texts.append(text)
best_text = max(texts, key=textutil.english_probability)
print('Decoded text: %r' % best_text)
def challenge_4():
input_file = "1-4.txt"
candidate_bytes = [[byte] for byte in range(0, 255)]
best_result = (None, None, 0)
for line in open(input_file).readlines():
line = line.strip()
if not line:
continue
cipher_bytes = crypto.hex_to_bytes(line)
result = crypto.brute_single_xor(cipher_bytes, candidate_bytes)
if result[1] and result[2] > best_result[2]:
best_result = result
print("Plaintext: %s" % best_result[1])