diff options
Diffstat (limited to 'src/block/aes/aes.cpp')
| -rw-r--r-- | src/block/aes/aes.cpp | 56 |
1 files changed, 38 insertions, 18 deletions
diff --git a/src/block/aes/aes.cpp b/src/block/aes/aes.cpp index 9072b507b..483fc239a 100644 --- a/src/block/aes/aes.cpp +++ b/src/block/aes/aes.cpp @@ -25,15 +25,25 @@ void AES::enc(const byte in[], byte out[]) const u32bit T2 = load_be<u32bit>(in, 2) ^ EK[2]; u32bit T3 = load_be<u32bit>(in, 3) ^ EK[3]; - u32bit B0, B1, B2, B3; - B0 = TE0[get_byte(0, T0)] ^ TE1[get_byte(1, T1)] ^ - TE2[get_byte(2, T2)] ^ TE3[get_byte(3, T3)] ^ EK[4]; - B1 = TE0[get_byte(0, T1)] ^ TE1[get_byte(1, T2)] ^ - TE2[get_byte(2, T3)] ^ TE3[get_byte(3, T0)] ^ EK[5]; - B2 = TE0[get_byte(0, T2)] ^ TE1[get_byte(1, T3)] ^ - TE2[get_byte(2, T0)] ^ TE3[get_byte(3, T1)] ^ EK[6]; - B3 = TE0[get_byte(0, T3)] ^ TE1[get_byte(1, T0)] ^ - TE2[get_byte(2, T1)] ^ TE3[get_byte(3, T2)] ^ EK[7]; + u32bit B0 = TE[get_byte(0, T0)] ^ + rotate_right(TE[get_byte(1, T1)], 8) ^ + rotate_right(TE[get_byte(2, T2)], 16) ^ + rotate_right(TE[get_byte(3, T3)], 24) ^ EK[4]; + + u32bit B1 = TE[get_byte(0, T1)] ^ + rotate_right(TE[get_byte(1, T2)], 8) ^ + rotate_right(TE[get_byte(2, T3)], 16) ^ + rotate_right(TE[get_byte(3, T0)], 24) ^ EK[5]; + + u32bit B2 = TE[get_byte(0, T2)] ^ + rotate_right(TE[get_byte(1, T3)], 8) ^ + rotate_right(TE[get_byte(2, T0)], 16) ^ + rotate_right(TE[get_byte(3, T1)], 24) ^ EK[6]; + + u32bit B3 = TE[get_byte(0, T3)] ^ + rotate_right(TE[get_byte(1, T0)], 8) ^ + rotate_right(TE[get_byte(2, T1)], 16) ^ + rotate_right(TE[get_byte(3, T2)], 24) ^ EK[7]; for(u32bit j = 2; j != ROUNDS; j += 2) { @@ -113,15 +123,25 @@ void AES::dec(const byte in[], byte out[]) const u32bit T2 = load_be<u32bit>(in, 2) ^ DK[2]; u32bit T3 = load_be<u32bit>(in, 3) ^ DK[3]; - u32bit B0, B1, B2, B3; - B0 = TD0[get_byte(0, T0)] ^ TD1[get_byte(1, T3)] ^ - TD2[get_byte(2, T2)] ^ TD3[get_byte(3, T1)] ^ DK[4]; - B1 = TD0[get_byte(0, T1)] ^ TD1[get_byte(1, T0)] ^ - TD2[get_byte(2, T3)] ^ TD3[get_byte(3, T2)] ^ DK[5]; - B2 = TD0[get_byte(0, T2)] ^ TD1[get_byte(1, T1)] ^ - TD2[get_byte(2, T0)] ^ TD3[get_byte(3, T3)] ^ DK[6]; - B3 = TD0[get_byte(0, T3)] ^ TD1[get_byte(1, T2)] ^ - TD2[get_byte(2, T1)] ^ TD3[get_byte(3, T0)] ^ DK[7]; + u32bit B0 = TD[get_byte(0, T0)] ^ + rotate_right(TD[get_byte(1, T3)], 8) ^ + rotate_right(TD[get_byte(2, T2)], 16) ^ + rotate_right(TD[get_byte(3, T1)], 24) ^ DK[4]; + + u32bit B1 = TD[get_byte(0, T1)] ^ + rotate_right(TD[get_byte(1, T0)], 8) ^ + rotate_right(TD[get_byte(2, T3)], 16) ^ + rotate_right(TD[get_byte(3, T2)], 24) ^ DK[5]; + + u32bit B2 = TD[get_byte(0, T2)] ^ + rotate_right(TD[get_byte(1, T1)], 8) ^ + rotate_right(TD[get_byte(2, T0)], 16) ^ + rotate_right(TD[get_byte(3, T3)], 24) ^ DK[6]; + + u32bit B3 = TD[get_byte(0, T3)] ^ + rotate_right(TD[get_byte(1, T2)], 8) ^ + rotate_right(TD[get_byte(2, T1)], 16) ^ + rotate_right(TD[get_byte(3, T0)], 24) ^ DK[7]; for(u32bit j = 2; j != ROUNDS; j += 2) { |