Python/ciphers/onepad_cipher.py
Christian Clauss 47a9ea2b0b
Simplify code by dropping support for legacy Python (#1143)
* Simplify code by dropping support for legacy Python

* sort() --> sorted()
2019-08-19 15:37:49 +02:00

31 lines
793 B
Python

import random
class Onepad:
def encrypt(self, text):
'''Function to encrypt text using psedo-random numbers'''
plain = [ord(i) for i in text]
key = []
cipher = []
for i in plain:
k = random.randint(1, 300)
c = (i+k)*k
cipher.append(c)
key.append(k)
return cipher, key
def decrypt(self, cipher, key):
'''Function to decrypt text using psedo-random numbers.'''
plain = []
for i in range(len(key)):
p = int((cipher[i]-(key[i])**2)/key[i])
plain.append(chr(p))
plain = ''.join([i for i in plain])
return plain
if __name__ == '__main__':
c, k = Onepad().encrypt('Hello')
print(c, k)
print(Onepad().decrypt(c, k))