def analyze(data, key_size):
key = [random.choice(string.ascii_lowercase) for _ in range(key_size)]
while True:
individuals = generate_individuals(data, key)
solution = get_solution_from_individuals(individuals)
if "".join(key) == "".join(solution.new_key):
break
key = solution.new_key
print('Key=%s\t\tFitness=%d' % ("".join(key), solution.fitness))
print("")
print("Key=%s" % "".join(key))
print(vigenere_lib.decrypt("".join(key), data))
def compute_fitness(self):
plain = vigenere_lib.decrypt("".join(self._key), self._cipher)
for w in words_list:
self._fitness += plain.count(w)
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
import vigenere_lib
import pso
if __name__ == '__main__':
if len(sys.argv) != 4 or sys.argv[1] not in ["-enc", "-dec", "-pso"]:
print("Usage:\t%s -enc|-dec plain_file key" % sys.argv[0])
print("\t%s -pso cipher_file key_size nb_turn" % sys.argv[0])
sys.exit(1)
with open(sys.argv[2]) as f:
data = f.read()
if sys.argv[1] == "-enc":
key = sys.argv[3]
print(vigenere_lib.crypt(key, data))
elif sys.argv[1] == "-dec":
key = sys.argv[3]
print(vigenere_lib.decrypt(key, data))
elif sys.argv[1] == "-pso":
key_size = int(sys.argv[3])
pso.analyze(data.lower(), key_size)