1 files changed, 18 insertions, 0 deletions
diff --git a/extra/libkeccak_state_wipe_sponge.c b/extra/libkeccak_state_wipe_sponge.c
new file mode 100644
index 0000000..91e845a
--- /dev/null
+++ b/extra/libkeccak_state_wipe_sponge.c
@@ -0,0 +1,18 @@
+/* See LICENSE file for copyright and license details. */
+#include "../common.h"
+
+
+/**
+ * Wipe data in the state's sponge without freeing any data
+ * 
+ * @param  state  The state that should be wipe
+ */
+void
+libkeccak_state_wipe_sponge(volatile struct libkeccak_state *state)
+{
+	volatile int64_t *restrict S = state->S;
+	size_t i;
+
+	for (i = 0; i < 25; i++)
+		S[i] = 0;
+}