From 8e50f73f7d597d5de84db82d82c829223d59ae1f Mon Sep 17 00:00:00 2001
From: Kévin Le Gouguec <kevin.legouguec@airbus.com>
Date: Wed, 21 Nov 2018 14:58:36 +0100
Subject: Extraction du code de debug de tweakey.c dans un entête
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Pour que cipher.c puisse s'en servir.
---
 crypto_aead/lilliputaei128v1/ref/debug.h   | 29 ++++++++++++++++++++
 crypto_aead/lilliputaei128v1/ref/tweakey.c | 43 +++++++-----------------------
 2 files changed, 39 insertions(+), 33 deletions(-)
 create mode 100644 crypto_aead/lilliputaei128v1/ref/debug.h

diff --git a/crypto_aead/lilliputaei128v1/ref/debug.h b/crypto_aead/lilliputaei128v1/ref/debug.h
new file mode 100644
index 0000000..27b58f8
--- /dev/null
+++ b/crypto_aead/lilliputaei128v1/ref/debug.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <inttypes.h>
+#include <stdio.h>
+
+
+static inline void debug_dump_buffer(FILE *output, const char *header, size_t len, const uint8_t buf[len], int indent)
+{
+    if (!output)
+    {
+        return;
+    }
+
+    fprintf(output, "%s\n", header);
+
+    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");
+}
diff --git a/crypto_aead/lilliputaei128v1/ref/tweakey.c b/crypto_aead/lilliputaei128v1/ref/tweakey.c
index dc8064a..4310dc5 100644
--- a/crypto_aead/lilliputaei128v1/ref/tweakey.c
+++ b/crypto_aead/lilliputaei128v1/ref/tweakey.c
@@ -6,37 +6,14 @@
 #include "parameters.h"
 #include "tweakey.h"
 
+#include "debug.h"
+
 
 #define LANE_BITS  64
 #define LANE_BYTES (LANE_BITS/8)
 #define LANES_NB (TWEAKEY_BYTES/LANE_BYTES)
 
 
-static void _dump_buffer(FILE *output, const char *header, size_t len, const uint8_t buf[len], int indent)
-{
-    if (!output)
-    {
-        return;
-    }
-
-    fprintf(output, "%s\n", header);
-
-    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_BYTES],
@@ -48,9 +25,9 @@ void tweakey_state_init(
     memcpy(TK->TK+TWEAK_BYTES, key,   KEY_BYTES);
 
     TK->debug = debug;
-    _dump_buffer(debug, "     Tweak is :", TWEAK_BYTES, tweak, 5);
-    _dump_buffer(debug, "     Key is :", KEY_BYTES, key, 5);
-    _dump_buffer(debug, "     Tweakey is :", sizeof(TK->TK), TK->TK, 5);
+    debug_dump_buffer(debug, "     Tweak is :", TWEAK_BYTES, tweak, 5);
+    debug_dump_buffer(debug, "     Key is :", KEY_BYTES, key, 5);
+    debug_dump_buffer(debug, "     Tweakey is :", sizeof(TK->TK), TK->TK, 5);
 }
 
 
@@ -74,8 +51,8 @@ void tweakey_state_extract(
 
     char debug[512];
     snprintf(debug, sizeof(debug), "     Extracting Subtweakey round  %"PRIu8, i);
-    _dump_buffer(TK->debug, debug, sizeof(TK->TK), TK->TK, 5);
-    _dump_buffer(TK->debug, "     Subtweakey :", ROUND_TWEAKEY_BYTES, round_tweakey, 5);
+    debug_dump_buffer(TK->debug, debug, sizeof(TK->TK), TK->TK, 5);
+    debug_dump_buffer(TK->debug, "     Subtweakey :", ROUND_TWEAKEY_BYTES, round_tweakey, 5);
 }
 
 
@@ -115,13 +92,13 @@ static void _multiply_state(tweakey_state *TK)
 
 void tweakey_state_update(tweakey_state *TK)
 {
-    _dump_buffer(TK->debug, "          Input Tweakey :", sizeof(TK->TK), TK->TK, 10);
+    debug_dump_buffer(TK->debug, "          Input Tweakey :", sizeof(TK->TK), TK->TK, 10);
 
     _permute_state(TK);
 
-    _dump_buffer(TK->debug, "          Post permutation Tweakey :", sizeof(TK->TK), TK->TK, 10);
+    debug_dump_buffer(TK->debug, "          Post permutation Tweakey :", sizeof(TK->TK), TK->TK, 10);
 
     _multiply_state(TK);
 
-    _dump_buffer(TK->debug, "          Post multiplication Tweakey :", sizeof(TK->TK), TK->TK, 10);
+    debug_dump_buffer(TK->debug, "          Post multiplication Tweakey :", sizeof(TK->TK), TK->TK, 10);
 }
-- 
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