gistfile1.js

var crypto = require('crypto');
var fs = require('fs');
var key = fs.readFileSync("/home/tyler/keys/tyler.pem").toString();
var publicKey = fs.readFileSync("/home/tyler/keys/tyler-public.pem").toString();
var text = "hello there";

var signature = crypto.createSign('RSA-SHA256').update(text).sign(key);
var verified = crypto.createVerify('RSA-SHA256').update(text).verify(publicKey,signature);
console.log(ver);

Needed to create a cert for public key