update to array instead of object access

Author: ylebre

src/Utils/DPop.php

@@ -49,15 +49,15 @@ public function getDpopKey($dpop, $request) {
 		$jwk = $dpop->headers()->get("jwk");
 		//error_log(print_r($jwk, true));
 
-		return $jwk->kid;		
+		return $jwk['kid'];
 	}
 
 	private function validateJwtDpop($jwt, $dpopKey) {
 		$jwtConfig = $configuration = Configuration::forUnsecuredSigner();
 		$jwt = $jwtConfig->parser()->parse($jwt);
 		$cnf = $jwt->claims()->get("cnf");
 
-		if ($cnf->jkt == $dpopKey) {
+		if ($cnf['jkt'] == $dpopKey) {
 			//error_log("dpopKey matches");
 			return true;
 		}