How to do dropdown with login/password pair and pass password through crypted?

Question

JavaScript

Hello!
There is a form like:

<input id="login">
<input id="pass" type="password">

And a cryptor for it:

var algorithm = 'aes192', password = '1234';
function encrypt(text){
    var cipher = crypt.createCipher(algorithm, password)
    var crypted = cipher.update(text,'utf8','hex')
    crypted += cipher.final('hex');
    return crypted;
}

function decrypt(text){
    var decipher = crypt.createDecipher(algorithm, password)
    var dec = decipher.update(text,'hex','utf8')
    dec += decipher.final('utf8');
    return dec;
}

There are also a couple of commands that interact with the cryptor:

new Builder($("login")).on("oninput", function(){
        window.localStorage['login'] = encrypt(this.value);
    }).on("onblur", updateProfile);
    new Builder($("pass")).on("oninput", function(){
        window.localStorage['pass'] = encrypt(this.value);
    }).on("onblur", updateProfile);

    $("login").value = window.localStorage['login'] ? decrypt(window.localStorage['login']) : "";
    $("pass").value = window.localStorage['pass'] ? decrypt(window.localStorage['pass']) : "";

How to make a dropdown out of all this with a login / password pair and pass the password through crypted?