1 files changed, 17 insertions, 0 deletions
diff --git a/libkeccak_state_wipe_sponge.c b/libkeccak_state_wipe_sponge.c
new file mode 100644
index 0000000..ad8c29f
--- /dev/null
+++ b/libkeccak_state_wipe_sponge.c
@@ -0,0 +1,17 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Wipe data in the state's sponge wihout freeing any data
+ * 
+ * @param  state  The state that should be wipe
+ */
+void
+libkeccak_state_wipe_sponge(volatile libkeccak_state_t *restrict state)
+{
+	volatile int64_t *restrict S = state->S;
+	size_t i;
+	for (i = 0; i < 25; i++)
+		S[i] = 0;
+}