verifier.js

var axios = require('axios');
var crypto = require('crypto');
var cryptico = require('cryptico');
var BASE_URL = "https://dauth.co/";

router.get("/demo", function(req, res, next){
    var username = req.query.username;
    var code = req.query.code;
    var hashcode = req.query.hashcode;
    var urlGetter = BASE_URL + "utils/url?username="+username;
    var keyGetter = BASE_URL + "utils/key?username="+username;
    axios.get(urlGetter).then(function(aUrl){
        axios.get(keyGetter).then(function(aKey){
            var tokenRaw = crypto.createHash('sha256').update(Math.random().toString()).digest('base64').substr(0,10);
            var encrypted = cryptico.encrypt(tokenRaw, aKey.data, "").cipher;
            axios.post(aUrl.data+"?action=verify", {username:username,code:code, hashcode:hashcode, cipher: encrypted}).then(function(decrypted){
                res.send(decrypted);
            });
        }).catch(function(error){
            res.status(500).send({message:error});
        });
    }).catch(function(error){
        res.status(500).send({message:error});
    });

});