Encrypted storage with localstorage

encrypted-storage.js

// Constants
const passphrase = 'password',
    key = 'data',
    object = { foo: 'bar' };
  
// Log original item
console.log('Original object', object);

// Store item with encryption
setItem(key, object, passphrase);

// Get item
let rObject = getItem(key, passphrase);

// Log retrieved item
console.log('Decrypted object', JSON.parse(rObject));

function setItem(key, data, passphrase) {
  const ciphertext = CryptoJS.AES.encrypt(JSON.stringify(data), passphrase);
  localStorage.setItem(key, ciphertext);
}

function getItem(key, passphrase) {
  const encryptedData = localStorage.getItem(key);
  const decryptedDataBytes = CryptoJS.AES.decrypt(encryptedData, passphrase);
  return decryptedDataBytes.toString(CryptoJS.enc.Utf8);
}

function deleteItem(key) {
  localStorage.removeItem(key);   
}

function deleteAll() {
  localStorage.clear();   
}