1 files changed, 18 insertions, 0 deletions
diff --git a/extra/libkeccak_state_wipe_message.c b/extra/libkeccak_state_wipe_message.c
new file mode 100644
index 0000000..364eb8e
--- /dev/null
+++ b/extra/libkeccak_state_wipe_message.c
@@ -0,0 +1,18 @@
+/* See LICENSE file for copyright and license details. */
+#include "../common.h"
+
+
+/**
+ * Wipe data in the state's message without freeing any data
+ * 
+ * @param  state  The state that should be wipe
+ */
+void
+libkeccak_state_wipe_message(volatile struct libkeccak_state *state)
+{
+	volatile unsigned char *restrict M = state->M;
+	size_t i;
+
+	for (i = 0; i < state->mptr; i++)
+		M[i] = 0;
+}