Password Hash Generation with PBKDF2HMAC

This function generates a password hash using the PBKDF2HMAC algorithm, which can specify salt and iteration count. It is used for secure password storage practices.

Technology Stack : cryptography, PBKDF2HMAC, SHA256, PBKDF2HMAC algorithm, salt, iteration count, password hash

Code Type : Function

Code Difficulty : Intermediate

                
                    
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.kdf.scrypt import Scrypt
from os import urandom
import json

def generate_password_hash(password, salt=None, iterations=100000):
    if salt is None:
        salt = urandom(16)
    kdf = PBKDF2HMAC(
        algorithm=hashes.SHA256(),
        length=32,
        salt=salt,
        iterations=iterations,
        backend=default_backend()
    )
    key = kdf.derive(password.encode())
    return key, salt