#!/usr/bin/env python3
"""Utility functions"""
import sys
[docs]def int_xor(var: bytes, key: bytes) -> bytes:
"""`int_xor` integer xor
Runs XOR on 2 bytes streams (must be less than 64 bytes)
Args:
- `var` (`bytes`): Input 1
- `key` (`bytes`): Input 2
Returns:
- `bytes`: XOR of input 1 and input 2
"""
key = key[: len(var)]
int_var: int = int.from_bytes(var, sys.byteorder)
int_key: int = int.from_bytes(key, sys.byteorder)
int_enc: int = int_var ^ int_key
return int_enc.to_bytes(len(var), sys.byteorder)