const crypto = require('crypto');

// Password and salt (from the encryption process)
const password = 'mysecretpassword';
const salt = Buffer.from('0123456789abcdef0123456789abcdef', 'hex');

// Encrypted data and IV from the encryption process
const encryptedData = '7a9c2c7157819144ede3cb9532263cb97c94a7b45d95163bb79aa1af55d4101d';
const iv = Buffer.from('0123456789abcdef0123456789abcdef', 'hex');

// Generate a key from the password
function getKeyFromPassword(password, salt) {
  // Use PBKDF2 to derive a key from the password
  return crypto.pbkdf2Sync(password, salt, 100000, 32, 'sha256');
}

// Decrypt data
function decryptWithPassword(encryptedText, password, salt, iv) {
  // Generate key from password
  const key = getKeyFromPassword(password, salt);
  
  // Create decipher
  const decipher = crypto.createDecipheriv('aes-256-cbc', key, iv);
  
  // Decrypt
  let decrypted = decipher.update(encryptedText, 'hex', 'utf8');
  decrypted += decipher.final('utf8');
  
  return decrypted;
}

try {
  // Decrypt using the password
  const decrypted = decryptWithPassword(encryptedData, password, salt, iv);
  console.log('Decrypted Text:', decrypted);
  
  // Try with wrong password (should fail)
  try {
    const wrongPassword = 'wrongpassword';
    const wrongDecrypted = decryptWithPassword(encryptedData, wrongPassword, salt, iv);
    console.log('Should not reach here - wrong password worked!');
  } catch (error) {
    console.log('Wrong password failed (expected):', error.message);
  }
  
} catch (error) {
  console.error('Decryption failed:', error.message);
}