1 files changed, 34 insertions, 0 deletions
diff --git a/crypto_aead/lilliputaei128v1/ref/tweakey.h b/crypto_aead/lilliputaei128v1/ref/tweakey.h
new file mode 100644
index 0000000..8018f9c
--- /dev/null
+++ b/crypto_aead/lilliputaei128v1/ref/tweakey.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdio.h>              /* debug */
+#include <stdint.h>
+
+
+#define TWEAK_LENGTH_BITS 192
+#define KEY_LENGTH_BITS 128
+#define ROUND_TWEAKEY_BITS 64
+
+
+struct tweakey_state
+{
+    FILE* debug;
+};
+
+typedef struct tweakey_state tweakey_state;
+
+
+void tweakey_state_init(
+    tweakey_state *TK,
+    const uint8_t key[KEY_LENGTH_BITS/8],
+    const uint8_t tweak[TWEAK_LENGTH_BITS/8],
+    FILE* debug
+);
+
+void tweakey_state_extract(
+    const tweakey_state *TK,
+    uint8_t round_tweakey[ROUND_TWEAKEY_BITS/8], /* output */
+    uint8_t i                                    /* round constant */
+);
+
+void tweakey_state_update(tweakey_state *TK);