Encrypt the notes with passphrase

[4msar]

Add end-to-end encryption with custom passphrase.

Use the AES Encryption from crypto-js

# Plain text encryption
var CryptoJS = require("crypto-js");

// Encrypt
var ciphertext = CryptoJS.AES.encrypt('my message', 'secret key 123').toString();

// Decrypt
var bytes  = CryptoJS.AES.decrypt(ciphertext, 'secret key 123');
var originalText = bytes.toString(CryptoJS.enc.Utf8);

console.log(originalText); // 'my message'

store the encrypted text to the DB and add a flag, passphrase: true ask user to give the passphrase to decode the text and show.