authorization.js

const secretForJWT = "thisIsAReallyGoodSecretNo";
const jwtExpireTimeInSeconds = 60*60;

generate_jwt = function(tokenData) {
  return jwt.sign(tokenData, secretForJWT, {
    expiresIn: jwtExpireTimeInSeconds
  });
};

verify_jwt = function(token) {
  try {
    return jwt.verify(token, secretForJWT);
  } catch(error) {
    console.error("Error decoding jwt: %s", error);
  }

  return null;
};