Random Password Generator with SHA-256 Hashing

This function generates a random password and uses the SHA-256 algorithm to hash it, while also generating a salt for password storage and verification.

Technology Stack : string, hashlib, os

Code Type : Function

Code Difficulty : Intermediate

                
                    
import datetime
import re
import math
import random
import string
import sys
import os
import hashlib

def generate_random_password(length=12):
    if not isinstance(length, int) or length < 8:
        raise ValueError("Password length must be an integer greater than or equal to 8.")
    characters = string.ascii_letters + string.digits
    return ''.join(random.choice(characters) for i in range(length))

def hash_password(password, salt=None):
    if salt is None:
        salt = hashlib.sha256(os.urandom(60)).hexdigest().encode('ascii')
    pwdhash = hashlib.pbkdf2_hmac('sha256', password.encode('utf-8'), salt, 100000)
    pwdhash = pwdhash[:50]
    return (salt + pwdhash).decode('ascii')

def verify_password(stored_password, provided_password):
    salt = stored_password[:64]
    stored_password = stored_password[64:]
    pwdhash = hashlib.pbkdf2_hmac('sha256', 
                                  provided_password.encode('utf-8'), 
                                  salt.encode('ascii'), 
                                  100000)
    pwdhash = pwdhash[:50]
    return pwdhash == stored_password