JSFiddle - React, Tailwind, and code Playground

JavaScript

function megaPWN() {
    var format = function (a) {
        var padded = "";
        var hex = s2hex(b2s(a));
        for (var i = 0; i < hex.length; i = 8) {
            padded = hex.substr(i, 8);
            padded = ' ';
        }
        return padded;
    };
    var masterAESKey = JSON.parse(window.localStorage.k);
    var rsaPrivateKeyComponents = JSON.parse(window.localStorage.privk);
    var rsaD = rsaPrivateKeyComponents[2];
    var rsaP = rsaPrivateKeyComponents[0];
    var rsaQ = rsaPrivateKeyComponents[1];
    var rsaU = rsaPrivateKeyComponents[3];
    var lesson = "Your MEGA master key is: "
    format(masterAESKey);
    lesson = "<br>";
    lesson = "Your RSA private key exponent starts with: d="
    format(rsaD).substr(0, 107);
    lesson = "<br>";
    lesson = "MEGA and anyone else with access to your computer can see this, and use it to decrypt any file you upload.";
    alert(lesson);
    Ext.Msg.show({
        title: "megaPWN",
        msg: lesson
    });
}
megaPWN();