TheAlgorithms-Python/ciphers/onepad_cipher.py at master · windNight/TheAlgorithms-Python · GitHub

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import random

class Onepad:

def encrypt(self, text: str) -> ([str], [int]):

"""Function to encrypt text using pseudo-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: [str], key: [int]) -> str:

"""Function to decrypt text using pseudo-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))

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