private void setAtHashAndNonce(IdToken idToken, ServerAccessToken st) {
   if (idToken.getAccessTokenHash() == null) {
     Properties props = JwsUtils.loadSignatureOutProperties(false);
     SignatureAlgorithm sigAlgo = null;
     if (super.isSignWithClientSecret()) {
       sigAlgo = OAuthUtils.getClientSecretSignatureAlgorithm(props);
     } else {
       sigAlgo = JwsUtils.getSignatureAlgorithm(props, SignatureAlgorithm.RS256);
     }
     if (sigAlgo != SignatureAlgorithm.NONE) {
       String atHash = OidcUtils.calculateAccessTokenHash(st.getTokenKey(), sigAlgo);
       idToken.setAccessTokenHash(atHash);
     }
   }
   Message m = JAXRSUtils.getCurrentMessage();
   if (m != null && m.getExchange().containsKey(OAuthConstants.NONCE)) {
     idToken.setNonce((String) m.getExchange().get(OAuthConstants.NONCE));
   } else if (st.getNonce() != null) {
     idToken.setNonce(st.getNonce());
   }
 }