From 89924ddc7e861d8c86bc90b7a0fc049998863221 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20P=C3=A9gouri=C3=A9-Gonnard?=
 <manuel.pegourie-gonnard@arm.com>
Date: Tue, 22 May 2018 13:07:07 +0200
Subject: [PATCH] Wipe sensitive info from the stack

---
 library/aria.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/library/aria.c b/library/aria.c
index fbdc0ec56..498a13264 100644
--- a/library/aria.c
+++ b/library/aria.c
@@ -493,6 +493,9 @@ int mbedtls_aria_setkey_enc( mbedtls_aria_context *ctx,
     }
     aria_rot128( ctx->rk[16], w[0], w[1], 19 );
 
+    /* w holds enough info to reconstruct the round keys */
+    mbedtls_zeroize( w, sizeof( w ) );
+
     return( 0 );
 }