From d14b23ca8253789fac6c9c4a55c6e40ce34f1936 Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Sun, 23 Jul 2017 00:10:32 -0400
Subject: [PATCH] null check for mac

---
 src/App/Utilities/Crypto.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/App/Utilities/Crypto.cs b/src/App/Utilities/Crypto.cs
index b4176c4c1..46c6fdef8 100644
--- a/src/App/Utilities/Crypto.cs
+++ b/src/App/Utilities/Crypto.cs
@@ -13,7 +13,7 @@ namespace Bit.App.Utilities
         {
             var parts = AesCbcEncryptToParts(plainBytes, key);
             return new CipherString(parts.Item1, Convert.ToBase64String(parts.Item2),
-                Convert.ToBase64String(parts.Item4), Convert.ToBase64String(parts.Item3));
+                Convert.ToBase64String(parts.Item4), parts.Item3 != null ? Convert.ToBase64String(parts.Item3) : null);
         }
 
         public static byte[] AesCbcEncryptToBytes(byte[] plainBytes, SymmetricCryptoKey key)