--- /dev/null
+/*
+ * Common values for the ChaCha20 algorithm
+ */
+
+#ifndef _CRYPTO_CHACHA20_H
+#define _CRYPTO_CHACHA20_H
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+
+#define CHACHA_IV_SIZE 16
+#define CHACHA_KEY_SIZE 32
+#define CHACHA_BLOCK_SIZE 64
+
+#endif