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 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 c6():
b64text = open('inputs/6.txt').read()
cipherbytes = crypto.base64_to_bytes(b64text)
keysizes = crypto.brute_keysize(cipherbytes)
keyrange = [[byte] for byte in range(0, 255)]
# Identify key candidates by trying single byte keys, spaced keysize
# bytes apart.
key_candidates = []
for keysize in keysizes:
chunks = crypto.split_every_n_bytes(cipherbytes, keysize)
key = b''
for chunk in chunks:
k, text = crypto.brute_xor(chunk, keyrange)
key += bytes(k)
key_candidates.append(key)
# Now run the key candidates and find the winner.
key, text = crypto.brute_xor(cipherbytes, key_candidates)
print('Decrypted with key: %s' % key.decode())
print('%s' % text)
def c6():
b64text = open('inputs/6.txt').read()
cipherbytes = crypto.base64_to_bytes(b64text)
keysizes = crypto.brute_keysize(cipherbytes)
keyrange = [[byte] for byte in range(0, 255)]
# Identify key candidates by trying single byte keys, spaced keysize
# bytes apart.
key_candidates = []
for keysize in keysizes:
chunks = crypto.split_every_n_bytes(cipherbytes, keysize)
key = b''
for chunk in chunks:
k, text = crypto.brute_xor(chunk, keyrange)
key += bytes(k)
key_candidates.append(key)
# Now run the key candidates and find the winner.
key, text = crypto.brute_xor(cipherbytes, key_candidates)
print('Decrypted with key: %s' % key.decode())
print('%s' % text)
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)
