How do I implement salt in hashing?

What is the purpose of using salt in hashing?

Salt is used in hashing to add randomness, making it harder for attackers to use precomputed tables (like rainbow tables) to crack passwords.

How do I generate a salt for my hashes?

You can generate a salt using a secure random number generator. In Python, for example, you can use the os.urandom() function.

Can you show me a code example of hashing with salt?

Sure! Here's a simple example in Python:

import os
import hashlib

# Generate a salt
salt = os.urandom(16)

# Hash a password with the salt
password = b'my_secure_password'
hash = hashlib.pbkdf2_hmac('sha256', password, salt, 100000)

How do I store the salt and hash securely?

You should store the salt alongside the hash in your database. Make sure to use a secure connection to your database to protect this data.