Useful functions to test ciphering functions

ciphering_utils.py

import binascii
import codecs


def to_hex(s: str, pad_until_length: int = 0) -> str:
    """
    Args:
        s: the string to be converted to it's hex representation.
        pad_until_length: if the length of the `s` argument is less than this argument, the string to be converted will be padded
                          with binary zeros to the right until it's length is equal to this argument.
    Returns:
        The hex representation of the `s` argument, padded to the right with binary zeros depending on the `pad_until_length` argument.
    """
    return binascii.hexlify(codecs.encode(s)).ljust(pad_until_length, b'0')

  
def xor(s1: str, s2: str) -> str:
    """
    Args:
        s1: a string made of only valid hexadecimal characters.
        s2: a string made of only valid hexadecimal characters.
    Returns:
        The result of xor'ing the arguments.
    """
    return hex(int(s1, 16) ^ int(s2, 16))