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| author | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2018-12-11 17:18:52 +0100 |
|---|---|---|
| committer | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2018-12-11 17:20:37 +0100 |
| commit | f92b969dc2b4ed8de7a3170c4b84ab06357e500c (patch) | |
| tree | c36a300a20a3adae3fc0fd9da87420d32d2b15a4 /src/tweakey.c | |
| parent | dc8035fc0b4d12d999a053de90071143bcd9b12d (diff) | |
| download | lilliput-ae-implem-f92b969dc2b4ed8de7a3170c4b84ab06357e500c.tar.xz | |
Dépliage de la séquence induite par M₄ pour MR³
Diffstat (limited to 'src/tweakey.c')
| -rw-r--r-- | src/tweakey.c | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/src/tweakey.c b/src/tweakey.c index dd0a855..4b3896d 100644 --- a/src/tweakey.c +++ b/src/tweakey.c @@ -181,7 +181,42 @@ static const uint8_t M3[256] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f +}; + +static const uint8_t M4[256] = { + 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, + 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, + 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, + 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x0f, + 0x10, 0x10, 0x11, 0x11, 0x12, 0x12, 0x13, 0x13, + 0x14, 0x14, 0x15, 0x15, 0x16, 0x16, 0x17, 0x17, + 0x18, 0x18, 0x19, 0x19, 0x1a, 0x1a, 0x1b, 0x1b, + 0x1c, 0x1c, 0x1d, 0x1d, 0x1e, 0x1e, 0x1f, 0x1f, + 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, + 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, + 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, + 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x0f, + 0x10, 0x10, 0x11, 0x11, 0x12, 0x12, 0x13, 0x13, + 0x14, 0x14, 0x15, 0x15, 0x16, 0x16, 0x17, 0x17, + 0x18, 0x18, 0x19, 0x19, 0x1a, 0x1a, 0x1b, 0x1b, + 0x1c, 0x1c, 0x1d, 0x1d, 0x1e, 0x1e, 0x1f, 0x1f, + 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, + 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, + 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, + 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x0f, + 0x10, 0x10, 0x11, 0x11, 0x12, 0x12, 0x13, 0x13, + 0x14, 0x14, 0x15, 0x15, 0x16, 0x16, 0x17, 0x17, + 0x18, 0x18, 0x19, 0x19, 0x1a, 0x1a, 0x1b, 0x1b, + 0x1c, 0x1c, 0x1d, 0x1d, 0x1e, 0x1e, 0x1f, 0x1f, + 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, + 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, + 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, + 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x0f, + 0x10, 0x10, 0x11, 0x11, 0x12, 0x12, 0x13, 0x13, + 0x14, 0x14, 0x15, 0x15, 0x16, 0x16, 0x17, 0x17, + 0x18, 0x18, 0x19, 0x19, 0x1a, 0x1a, 0x1b, 0x1b, + 0x1c, 0x1c, 0x1d, 0x1d, 0x1e, 0x1e, 0x1f, 0x1f }; static void _multiply_MR(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) @@ -210,11 +245,14 @@ static void _multiply_MR2(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) static void _multiply_MR3(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) { - uint8_t tmp[LANE_BYTES]; - memcpy(tmp, X, LANE_BYTES); - - _multiply_MR2(X, tmp); - _multiply_MR(tmp, Y); + Y[0] = X[3] ^ X[4]>>3; + Y[1] = X[4] ^ X[5]>>3 ^ M3[X[6]]; + Y[2] = M4[X[3]] ^ X[5] ^ M1[X[6]] ^ M3[X[7]]; + Y[3] = X[3]<<2 ^ X[6] ^ X[7]<<3; + Y[4] = X[0]<<3 ^ X[4]<<2 ^ X[7]; + Y[5] = X[0] ^ X[5]<<2 ^ X[6]<<5; + Y[6] = X[1]; + Y[7] = X[2]; } typedef void (*matrix_multiplication)(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]); |