new_password_helper

import os
import hashlib

from typing import Tuple

HASH_NAME = "sha256"
ITERATIONS = 100_000



def gen_salt() -> bytes:
    return os.urandom(32)


def hash_password(salt: bytes, password: str) -> bytes:
    """
    Generate a key for password using provided salt
    :param salt:
    :param password:
    :return:
    """
    new_key: bytes = hashlib.pbkdf2_hmac(HASH_NAME, password.encode("utf-8"), salt, ITERATIONS)
    return new_key


def create_new_password(password: str) -> Tuple[bytes, bytes]:
    """
    Creates new salt and hashes passed password
    Returned tuple contains the key (hash) and salt
    :param password:
    :return:
    """
    salt = gen_salt()
    new_key = hash_password(salt, password)
    return new_key, salt