var Cryptonite = require('cryptonite');
var cookie = require('cookie');
 
var cryptonite = new Cryptonite({
                                    cryptoSecret: 'very secret crypto secrect',
                                    signingSecret: 'very secret signing secrect'
                                });
                                
var authenticationTicket = {
              userId: '3456798764',
              token: '234567895345764857864237654345764'
          };
 
var encryptedAuthenticationTicket = cryptonite.encrypt(authenticationTicket);
 
res.cookie('auth_cookie',encryptedAuthenticationTicket, {
                                                    httpOnly: true,
                                                    maxAge: 86000
                                                });
 
var cookies = req.headers.cookie;
var parsedCookies = cookie.parse(cookies);
var authCookieValue = parsedCookies['auth_cookie'];
 
 
var retreivedAuthenticationTicket = cryptonite.decrypt(authCookieValue);