पासवर्ड जनरेटर - मज़बूत रैंडम पासवर्ड और पासफ़्रेज़ ऑनलाइन

// Secure password generator using Web Crypto API
function generatePassword(length = 16, options = {}) {
  const { uppercase = true, lowercase = true, numbers = true, symbols = true } = options;

  let charset = '';
  if (uppercase) charset += 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  if (lowercase) charset += 'abcdefghijklmnopqrstuvwxyz';
  if (numbers) charset += '0123456789';
  if (symbols) charset += '!@#$%^&*()_+-=[]{}|;:,.<>?';

  const array = new Uint32Array(length);
  crypto.getRandomValues(array);

  let password = '';
  for (let i = 0; i < length; i++) {
    password += charset[array[i] % charset.length];
  }
  return password;
}

const pwd = generatePassword(20);
console.log(pwd);
console.log('Entropy:', (20 * Math.log2(90)).toFixed(1), 'bits');