docs: def xor_bytes(b1: bytes, b2: bytes) -> bytearray:
      """
      Apply XOR operation on two bytes arguments
  
      :param b1: First bytes argument
      :param b2: Second bytes argument
      :rtype bytearray:
      """
      result = bytearray()
      for i1, i2 in zip(b1, b2):
          result.append(i1 ^ i2)
      return result