From 8b5608ac7c5a4493f101fb489e66401a834f3312 Mon Sep 17 00:00:00 2001
From: Felix Dittrich <Felix.Dittrich@t-systems.com>
Date: Tue, 11 May 2021 13:02:04 +0200
Subject: [PATCH] Add Null Check at Certificate Download

---
 .../ec/dgc/gateway/connector/DgcGatewayDownloadConnector.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/eu/europa/ec/dgc/gateway/connector/DgcGatewayDownloadConnector.java b/src/main/java/eu/europa/ec/dgc/gateway/connector/DgcGatewayDownloadConnector.java
index a407df6..8371bb2 100644
--- a/src/main/java/eu/europa/ec/dgc/gateway/connector/DgcGatewayDownloadConnector.java
+++ b/src/main/java/eu/europa/ec/dgc/gateway/connector/DgcGatewayDownloadConnector.java
@@ -214,6 +214,10 @@ private boolean checkUploadCertificate(TrustListItemDto trustListItem) {
             new SignedCertificateMessageParser(trustListItem.getSignature(), trustListItem.getRawData());
         X509CertificateHolder uploadCertificate = parser.getSigningCertificate();
 
+        if (uploadCertificate == null) {
+            return false;
+        }
+
         return trustedUploadCertificates
             .stream()
             .anyMatch(uploadCertificate::equals);