def crack_block(cipher, n_shifts=None):
if n_shifts is not None:
gen = lambda: BlockChromo(
[random.randint(0, 25) for _ in range(n_shifts)], cipher)
else:
gen = lambda: BlockChromo(
[random.randint(0, 25)
for _ in range(random.randint(1, 5))], cipher)
trainer = genetic.Trainer(100, gen)
for i in range(200):
w = trainer.iterate()
return ''.join([str(26 - s) + ' ' for s in w.shifts
]) + '| ' + Encryption.block_step(cipher, w.shifts)
def fitness(self):
decr = Encryption.block_step(self.cipher, self.shifts)
return cipher.score(decr)
Encryption.simple_step(tokens[2], int(tokens[1])) + '\n')
elif tokens[0] == "DECRYPT":
w.write(
Encryption.simple_step(tokens[2], 26 - int(tokens[1])) +
'\n')
# 1b
with open('./output/1b.out', 'w') as w:
with open('./input/1b.in') as file:
for line in file:
tokens = line.split('|')
tokens[0] = re.sub(r'\s', '', tokens[0])
tokens[2] = re.sub(r'\s', '', tokens[2])
shifts = [int(s) for s in tokens[1].split()]
if tokens[0] == "ENCRYPT":
w.write(Encryption.block_step(tokens[2], shifts) + '\n')
elif tokens[0] == "DECRYPT":
w.write(
Encryption.block_step(
tokens[2], [26 - shift for shift in shifts]) + '\n')
#1c
with open('./output/1c.out', 'w') as w:
with open('./input/1c.in') as file:
for line in file:
tokens = line.split('|')
tokens[0] = re.sub(r'\s', '', tokens[0])
tokens[1] = re.sub(r'\s', '', tokens[1])
tokens[2] = re.sub(r'\s', '', tokens[2])
if tokens[0] == "ENCRYPT":
w.write(Encryption.permutation(tokens[2], tokens[1]) + '\n')
