AES CBS encryption-decryption

// using https://github.com/ricmoo/aes-js

var key = aesjs.utils.utf8.toBytes('Bar12345Bar12345');
var iv = aesjs.utils.utf8.toBytes('RandomInitVector');


// encryption
var text = 'Hello W123123123123123123';
var textBytes = aesjs.padding.pkcs7.pad(aesjs.utils.utf8.toBytes(text));


var aesCbc = new aesjs.ModeOfOperation.cbc(key, iv);
var encryptedBytes = aesCbc.encrypt(textBytes);

var encryptedHex = aesjs.utils.hex.fromBytes(encryptedBytes);
console.log(encryptedHex);


// decryption
var encryptedBytes = aesjs.utils.hex.toBytes(encryptedHex);

// The cipher-block chaining mode of operation maintains internal
// state, so to decrypt a new instance must be instantiated.
var aesCbc = new aesjs.ModeOfOperation.cbc(key, iv);
var decryptedBytes = aesjs.padding.pkcs7.strip(aesCbc.decrypt(encryptedBytes));

// Convert our bytes back into text
var decryptedText = aesjs.utils.utf8.fromBytes(decryptedBytes);
console.log(decryptedText);