RTCPeerConnection.generateCertificate() is returning an empty object

Question

Here is the code (browser Chrome on Ubuntu):

   RTCPeerConnection.generateCertificate(
            {              name: "RSASSA-PKCS1-v1_5",
                  modulusLength: 2048,
                 publicExponent: new Uint8Array([1, 0, 1]),
                           hash: "SHA-256" })
           .then 
             ( function(cert) {
                 console.log("typeof: " + typeof(cert));
                  console.log("S: " + JSON.stringify(cert));
               }, 
               function(err) {
                   console.log("E: " + err);
               } 
             );

It displays:

   typeof: object
   S: {}

Actually this is almost the exact code from Mozilla site

Also, conforms to the WebRTC specs Section 4.9

Answer 1

The certificate isn't serializable. If you add a console.log(cert); you'll see something along the lines of RTCCertificate { expires: 1595444355114 }. That is intentional, you can not export the key like you can in webcrypto. And there is no toJSON