From d09b1726efd194b28fba15a9833170d7077abe23 Mon Sep 17 00:00:00 2001
From: David Hook <dgh@bouncycastle.org>
Date: Thu, 6 Jul 2017 10:38:34 +1000
Subject: added missing null check

---
 crypto/src/crypto/digests/DSTU7564Digest.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'crypto/src')

diff --git a/crypto/src/crypto/digests/DSTU7564Digest.cs b/crypto/src/crypto/digests/DSTU7564Digest.cs
index 12057b146..9de41dd6b 100644
--- a/crypto/src/crypto/digests/DSTU7564Digest.cs
+++ b/crypto/src/crypto/digests/DSTU7564Digest.cs
@@ -282,7 +282,11 @@ namespace Org.BouncyCastle.Crypto.Digests
             bufOff = 0;
 
             Arrays.Fill(buf, (byte)0);
-            Arrays.Fill(padded_, (byte)0);
+
+            if (padded_ != null)
+            {
+                Arrays.Fill(padded_, (byte)0);
+            }
         }
 
           public int GetDigestSize()
-- 
cgit 1.5.1