From c411641afd681d086a9595e9f82618246afbca0b Mon Sep 17 00:00:00 2001
From: Kévin Le Gouguec <kevin.legouguec@airbus.com>
Date: Mon, 20 May 2019 14:00:07 +0200
Subject: Correction du calcul de Fj
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Problème introduit par 3a57031.
---
 src/ref/cipher.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ref/cipher.c b/src/ref/cipher.c
index 5822575..6f1b4b5 100644
--- a/src/ref/cipher.c
+++ b/src/ref/cipher.c
@@ -85,7 +85,7 @@ static void _compute_round_tweakeys(
 
 static uint8_t _Fj(uint8_t Xj, uint8_t RTKj)
 {
-    return S[Xj] ^ RTK[j];
+    return S[Xj ^ RTKj];
 }
 
 static void _nonlinear_layer(uint8_t X[BLOCK_BYTES], const uint8_t RTK[ROUND_TWEAKEY_BYTES])
-- 
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