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| author | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2018-12-11 16:44:42 +0100 |
|---|---|---|
| committer | Kévin Le Gouguec <kevin.legouguec@airbus.com> | 2018-12-11 17:20:37 +0100 |
| commit | 064bcd06147dbd7ac2dac0ab0d0b75d60264acd8 (patch) | |
| tree | cfa22c2ece94aee212bb2a4497754c426aa557d9 /src/tweakey.c | |
| parent | 96c711433a6ac9529d2f205b75c4c5bcd49f9419 (diff) | |
| download | lilliput-ae-implem-064bcd06147dbd7ac2dac0ab0d0b75d60264acd8.tar.xz | |
Renommage des séquences induites par M₁ et M₂
Vu que la séquence générée par M₁ pour M² et M³ sera probablement
différente de la séquence générée pour MR³.
Diffstat (limited to 'src/tweakey.c')
| -rw-r--r-- | src/tweakey.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/src/tweakey.c b/src/tweakey.c index 9f67ed6..3e42f4b 100644 --- a/src/tweakey.c +++ b/src/tweakey.c @@ -55,7 +55,7 @@ static void _multiply_M(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) Y[0] = X[7]; } -static const uint8_t M_1[256] = { +static const uint8_t M_M1[256] = { 0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38, 0x41, 0x49, 0x51, 0x59, 0x61, 0x69, 0x71, 0x79, 0x82, 0x8a, 0x92, 0x9a, 0xa2, 0xaa, 0xb2, 0xba, @@ -90,7 +90,7 @@ static const uint8_t M_1[256] = { 0xdf, 0xd7, 0xcf, 0xc7, 0xff, 0xf7, 0xef, 0xe7 }; -static const uint8_t M_2[256] = { +static const uint8_t M_M2[256] = { 0x00, 0x40, 0x80, 0xc0, 0x00, 0x40, 0x80, 0xc0, 0x08, 0x48, 0x88, 0xc8, 0x08, 0x48, 0x88, 0xc8, 0x10, 0x50, 0x90, 0xd0, 0x10, 0x50, 0x90, 0xd0, @@ -122,15 +122,15 @@ static const uint8_t M_2[256] = { 0xe3, 0xa3, 0x63, 0x23, 0xe3, 0xa3, 0x63, 0x23, 0xeb, 0xab, 0x6b, 0x2b, 0xeb, 0xab, 0x6b, 0x2b, 0xf3, 0xb3, 0x73, 0x33, 0xf3, 0xb3, 0x73, 0x33, - 0xfb, 0xbb, 0x7b, 0x3b, 0xfb, 0xbb, 0x7b, 0x3b, + 0xfb, 0xbb, 0x7b, 0x3b, 0xfb, 0xbb, 0x7b, 0x3b }; static void _multiply_M2(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) { Y[7] = X[5]; Y[6] = X[4] ^ X[5]<<3; - Y[5] = X[3] ^ M_1[X[4]] ^ X[5]<<6; - Y[4] = X[2] ^ X[3]>>3 ^ X[4]>>6; + Y[5] = X[3] ^ M_M1[X[4]] ^ X[5]<<6; + Y[4] = X[2] ^ X[3]>>3 ^ X[4]>>6; Y[3] = X[6]<<2 ^ X[1]; Y[2] = X[5]<<2 ^ X[0]; Y[1] = X[7]; @@ -139,12 +139,12 @@ static void _multiply_M2(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) static void _multiply_M3(const uint8_t X[LANE_BYTES], uint8_t Y[LANE_BYTES]) { - Y[7] = X[5]<<3 ^ X[4]; - Y[6] = X[5]<<6 ^ M_1[X[4]] ^ X[3]; - Y[5] = M_2[X[4]] ^ M_1[X[3]] ^ X[2]; - Y[4] = X[6]<<2 ^ X[3]>>6 ^ X[2]>>3 ^ X[1]; - Y[3] = X[5]<<2 ^ X[0]; - Y[2] = X[7] ^ X[5]<<5 ^ X[4]<<2; + Y[7] = X[5]<<3 ^ X[4]; + Y[6] = X[5]<<6 ^ M_M1[X[4]] ^ X[3]; + Y[5] = M_M2[X[4]] ^ M_M1[X[3]] ^ X[2]; + Y[4] = X[6]<<2 ^ X[3]>>6 ^ X[2]>>3 ^ X[1]; + Y[3] = X[5]<<2 ^ X[0]; + Y[2] = X[7] ^ X[5]<<5 ^ X[4]<<2; Y[1] = X[6]; Y[0] = X[5]; } |