Get the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.GetProtectedHeader, which copies the decoded shared JWE protected header into a JsonObject.

import 'package:chilkat/chilkat.dart';

void main() {
  final jwe = CkJwe();

  // Load the JWE.
  final jweCompact = 'eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>';
  try {
    jwe.loadJwe(jweCompact);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Copy the decoded shared JWE protected header into a JsonObject.  Only the protected header is
  // returned; it is not merged with the unprotected or per-recipient headers.
  final json = CkJsonObject();
  try {
    jwe.getProtectedHeader(json);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  json.emitCompact = false;
  print(json.emit());
}