PassGen | Secure Password Generator Tool
A modern password generator that helps users create strong, secure, and customizable passwords instantly. Features include adjustable password length, character selection, and one-click copy functionality for enhanced security and convenience.
Project Overview
PassShield runs entirely in the browser using the native Web Crypto API for client-side cryptographic security. Users can generate strong passwords with customizable length, symbols, numbers, and case rules, analyze password entropy, and copy credentials instantly.
Key Features
Cryptographically secure pseudo-random password generation via Web Crypto API
Customizable rules: length slider (4 to 64 chars), uppercase, lowercase, numbers, and symbols
Real-time password strength meter based on entropy calculations
One-click copy to clipboard with instant visual feedback toast
Local session history for recently generated passwords (stored safely in memory)
Pronounceable and easy-to-read password preset options
Zero backend dependencies: 100% client-side, offline-ready, and private
Sleek, fully responsive UI with dark and light theme toggle support
Challenges & Solutions
Standard `Math.random()` isn't cryptographically secure for password generation. Solved this by utilizing browser-native `window.crypto.getRandomValues()` to guarantee true randomness. Implemented entropy algorithms to evaluate password strength accurately without transmitting data anywhere.