From 0b90498964b43fa37111701030ac693484130c8a Mon Sep 17 00:00:00 2001 From: Kévin Le Gouguec Date: Tue, 11 Dec 2018 14:02:45 +0100 Subject: Correction des shifts lors de la multiplication par MR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit *Toutes* les opérations s'appliquent dans l'autre sens, *y compris les shifts*, vu que on prend (y₀…y7)ᵗ = MR(x₀…x₇)ᵗ. --- src/tweakey.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src/tweakey.c') diff --git a/src/tweakey.c b/src/tweakey.c index 6905372..8f2f7dd 100644 --- a/src/tweakey.c +++ b/src/tweakey.c @@ -115,10 +115,10 @@ static void _multiply_MR(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) { Y[0] = X[1]; Y[1] = X[2]; - Y[2] = X[3] ^ X[4]<<3; + Y[2] = X[3] ^ X[4]>>3; Y[3] = X[4]; - Y[4] = X[5] ^ X[6]>>3; - Y[5] = X[6] ^ X[3]>>2; + Y[4] = X[5] ^ X[6]<<3; + Y[5] = X[6] ^ X[3]<<2; Y[6] = X[7]; Y[7] = X[0]; } -- cgit v1.2.3