Making expiration date optional on the JWT.

Author: vitorpamplona

lib/shc.js

@@ -9,17 +9,19 @@ const URI_SCHEMA = 'shc';
  * I am not sure if I should build this by hand. 
  */
 export async function makeJWT(payload, monthsToExpire, issuer, notBeforeDate) {
-  let iss = new Date();
-  let exp = new Date(iss);
+  let today = new Date();
+  let exp = new Date(today);
   exp.setMonth(exp.getMonth()+monthsToExpire);
 
   let jwt = {
     iss: issuer,
-    iat: Math.round(iss.getTime()/1000),
-    exp: Math.round(exp.getTime()/1000),
     vc: payload
   };
 
+  if (monthsToExpire) {
+    jwt['exp'] = Math.round(exp.getTime()/1000)
+  }
+
   if (notBeforeDate)
     jwt['nbf'] = Math.round(notBeforeDate.getTime()/1000);