decrypt: function (userId, encryptedToken) {
var keyBytes = aesjs.util.convertStringToBytes(userId);
var tokenBytes = aesjs.util.convertStringToBytes(encryptedToken);
var aesCrypt = new aesjs.ModeOfOperation.ctr(keyBytes);
var decryptedToken = aesCrypt.decrypt(tokenBytes);
return aesjs.util.convertBytesToString(decryptedToken);
}
function aesEncrypt(key, text) {
var textBytes = aes.util.convertStringToBytes(text)
var encryptedBytes = new aes.ModeOfOperation.ctr(key).encrypt(textBytes)
return encryptedBytes.toString('base64')
}