From 7f55c67099b6774123faf8a3ced7de0548798c86 Mon Sep 17 00:00:00 2001
From: Kévin Le Gouguec <kevin.legouguec@airbus.com>
Date: Tue, 20 Nov 2018 10:43:35 +0100
Subject: Initialisation et dump du tweakey

---
 crypto_aead/lilliputaei128v1/ref/tweakey.c | 38 ++++++++++++++++++++++++++----
 1 file changed, 33 insertions(+), 5 deletions(-)

(limited to 'crypto_aead/lilliputaei128v1/ref/tweakey.c')

diff --git a/crypto_aead/lilliputaei128v1/ref/tweakey.c b/crypto_aead/lilliputaei128v1/ref/tweakey.c
index 340a85b..7cc92c3 100644
--- a/crypto_aead/lilliputaei128v1/ref/tweakey.c
+++ b/crypto_aead/lilliputaei128v1/ref/tweakey.c
@@ -1,21 +1,49 @@
+#include <string.h>
+
 #include "tweakey.h"
 
 
+static void _dump_buffer(FILE* output, size_t len, const uint8_t buf[len], int indent)
+{
+    for (size_t line=0; line<len/8; line++)
+    {
+        fprintf(output, "%*s", indent, "");
+        for (size_t b=0; b<8; b++)
+        {
+            /* start with MSB */
+            size_t byte_index = len-(1+line*8+b);
+            fprintf(output, "%*s", 5, "");
+            fprintf(output, "%02x", buf[byte_index]);
+        }
+        fprintf(output, "\n");
+    }
+    fprintf(output, "\n");
+}
+
+
 void tweakey_state_init(
     tweakey_state *TK,
-    const uint8_t key[KEY_LENGTH_BITS/8],
-    const uint8_t tweak[TWEAK_LENGTH_BITS/8],
+    const uint8_t key[KEY_BYTES],
+    const uint8_t tweak[TWEAK_BYTES],
     FILE* debug
 )
 {
-    
+    memcpy(TK->TK,             tweak, TWEAK_BYTES);
+    memcpy(TK->TK+TWEAK_BYTES, key,   KEY_BYTES);
+
+    fprintf(debug, "     Tweak is :\n");
+    _dump_buffer(debug, TWEAK_BYTES, tweak, 5);
+    fprintf(debug, "     Key is :\n");
+    _dump_buffer(debug, KEY_BYTES, key, 5);
+    fprintf(debug, "     Tweakey is :\n");
+    _dump_buffer(debug, sizeof(TK->TK), TK->TK, 5);
 }
 
 
 void tweakey_state_extract(
     const tweakey_state *TK,
-    uint8_t round_tweakey[ROUND_TWEAKEY_BITS/8], /* output */
-    uint8_t i                                    /* round constant */
+    uint8_t round_tweakey[ROUND_TWEAKEY_BYTES], /* output */
+    uint8_t i                                   /* round constant */
 )
 {
     
-- 
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