Get a JWS Unprotected Header

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.GetUnprotectedH, which copies the optional unprotected header of a signature into a JsonObject.

import { JsonObject, Jws } from '@chilkat/react-native'

function chilkatExample() {
  const jws = new Jws();

  // Load the JWS compact serialization.
  const jwsCompact = 'eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>';
  try {
    jws.loadJws(jwsCompact);
  } catch {
    console.log(jws.lastErrorText);
    return;
  }

  // Copy the optional unprotected header of signature 0 into a JsonObject.  This applies to JWS in a
  // JSON serialization form that carries an unprotected header.
  const json = new JsonObject();
  try {
    jws.getUnprotectedH(0, json);
  } catch {
    console.log(jws.lastErrorText);
    return;
  }

  json.emitCompact = false;
  console.log(json.emit());
}