From 856c7c56ad2ebc9a534ec4136f6eca38a83950e2 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Mon, 31 Oct 2016 22:34:59 -0400
Subject: [PATCH] Fix potential zeroizer removal (Issue 331)

---
 cast.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cast.cpp b/cast.cpp
index 88162c06..6c1babb9 100644
--- a/cast.cpp
+++ b/cast.cpp
@@ -290,7 +290,7 @@ void CAST256::Base::UncheckedSetKey(const byte *userKey, unsigned int keylength,
 		}
 	}
 
-	memset(kappa, 0, sizeof(kappa));
+	SecureWipeBuffer(kappa, 8);
 }
 
 NAMESPACE_END