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| author | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2019-02-20 15:31:02 +0100 |
|---|---|---|
| committer | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2019-02-20 17:22:38 +0100 |
| commit | 590637c9e555d6ba6b9b0e8e871d1ed926b49911 (patch) | |
| tree | 5ae1b77de47602b57f202a615df9b09702e26ba3 /src/add_tweakeyunrolled/tweakey.c | |
| parent | cc2e0ab73ec7d971f8cdb36fc91895b79823ad9a (diff) | |
| download | lilliput-ae-implem-590637c9e555d6ba6b9b0e8e871d1ed926b49911.tar.xz | |
Adaptation du code de α₅
Diffstat (limited to 'src/add_tweakeyunrolled/tweakey.c')
| -rw-r--r-- | src/add_tweakeyunrolled/tweakey.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/add_tweakeyunrolled/tweakey.c b/src/add_tweakeyunrolled/tweakey.c index 7f80a2a..cad50da 100644 --- a/src/add_tweakeyunrolled/tweakey.c +++ b/src/add_tweakeyunrolled/tweakey.c @@ -135,11 +135,13 @@ static void _multiply_MR(const uint8_t x[LANE_BYTES], uint8_t y[LANE_BYTES]) static void _multiply_MR2(const uint8_t x[LANE_BYTES], uint8_t y[LANE_BYTES]) { + uint8_t x_MR_4 = x[5] ^ x[6]<<3; + y[0] = x[2]; y[1] = x[3] ^ x[4]>>3; - y[2] = x[4] ^ x[5]>>3 ^ _M3(x[6]); - y[3] = x[5] ^ x[6]<<3; - y[4] = x[3]<<2 ^ x[6] ^ x[7]<<3; + y[2] = x[4] ^ x_MR_4>>3; + y[3] = x_MR_4; + y[4] = x[3]<<2 ^ x[6] ^ x[7]<<3; y[5] = x[4]<<2 ^ x[7]; y[6] = x[0]; y[7] = x[1]; |