From ee6b3e6f31566b4d816c881482f1620ff0f74b47 Mon Sep 17 00:00:00 2001
From: Sumanth Pasupuleti <spasupuleti@netflix.com>
Date: Wed, 4 Aug 2021 10:24:26 -0700
Subject: [PATCH] Handling null in checksum validation

---
 .../java/com/netflix/ndbench/core/util/CheckSumUtil.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ndbench-core/src/main/java/com/netflix/ndbench/core/util/CheckSumUtil.java b/ndbench-core/src/main/java/com/netflix/ndbench/core/util/CheckSumUtil.java
index c0e02c71..820f71d5 100644
--- a/ndbench-core/src/main/java/com/netflix/ndbench/core/util/CheckSumUtil.java
+++ b/ndbench-core/src/main/java/com/netflix/ndbench/core/util/CheckSumUtil.java
@@ -82,10 +82,14 @@ public static String appendCheckSumAndEncodeBase64(String inputString, boolean a
      * Base64 decodes the input string, extracts original string bytes and checksum bytes, generates checksum from the
      * extracted string bytes, and validates against the extracted checksum bytes.
      * @param encodedInput
-     * @return true if the checksum is correct, false otherwise
+     * @return true if the checksum is correct or if the encodedInput is null, false otherwise.
      */
     public static boolean isChecksumValid(String encodedInput)
     {
+        // ignore null input
+        if (null == encodedInput)
+            return true;
+
         try
         {
             byte[] inputInBytes = Base64.getDecoder().decode(encodedInput);