const mqtt = require('mqtt');
const crypto = require('crypto');

var HOST = 'HOST';
var USERNAME = 'USER_NAME';
var PASSWORD = 'PASSWORD';

var client = mqtt.connect('mqtt://' + HOST, {username: USERNAME, password: crypto.createHash('sha512').update(PASSWORD, "utf8").digest("base64")});
console.log('connected to '+ HOST);

var topic_sub = '455/' + USERNAME + '/#';
client.subscribe(topic_sub);
console.log('subscribed topic: '+ topic_sub);

client.on('message', function(topic_sub, message_sub){
	console.log(topic_sub + ':' + message_sub);
});