diff options
| author | lloyd <[email protected]> | 2008-11-17 02:01:23 +0000 |
|---|---|---|
| committer | lloyd <[email protected]> | 2008-11-17 02:01:23 +0000 |
| commit | dff993e8ab2a0b744d2787d61b1a2a55af51c3b8 (patch) | |
| tree | 15ce6d29f0bd37458f3463d5f742f08d0ee9b0a9 | |
| parent | 401fd98be7be9d6e68b0c0501b01473be0eee50c (diff) | |
Move the loads of AES::EK to the top of the loop.
Before:
$ ./check --bench-algo=AES-128,AES-256 --seconds=10
AES-128: 101.99 MiB/sec
AES-256: 78.30 MiB/sec
After:
$ ./check --bench-algo=AES-128,AES-256 --seconds=10
AES-128: 106.51 MiB/sec
AES-256: 84.26 MiB/sec
| -rw-r--r-- | src/block/aes/aes.cpp | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/src/block/aes/aes.cpp b/src/block/aes/aes.cpp index 06c1b8fd6..ff298a697 100644 --- a/src/block/aes/aes.cpp +++ b/src/block/aes/aes.cpp @@ -31,23 +31,33 @@ void AES::enc(const byte in[], byte out[]) const { u32bit T0, T1, T2, T3; + const u32bit EK_0 = EK[4*j+0]; + const u32bit EK_1 = EK[4*j+1]; + const u32bit EK_2 = EK[4*j+2]; + const u32bit EK_3 = EK[4*j+3]; + + const u32bit EK_4 = EK[4*j+0]; + const u32bit EK_5 = EK[4*j+1]; + const u32bit EK_6 = EK[4*j+2]; + const u32bit EK_7 = EK[4*j+3]; + T0 = TE0[get_byte(0, B0)] ^ TE1[get_byte(1, B1)] ^ - TE2[get_byte(2, B2)] ^ TE3[get_byte(3, B3)] ^ EK[4*j+0]; + TE2[get_byte(2, B2)] ^ TE3[get_byte(3, B3)] ^ EK_0; T1 = TE0[get_byte(0, B1)] ^ TE1[get_byte(1, B2)] ^ - TE2[get_byte(2, B3)] ^ TE3[get_byte(3, B0)] ^ EK[4*j+1]; + TE2[get_byte(2, B3)] ^ TE3[get_byte(3, B0)] ^ EK_1; T2 = TE0[get_byte(0, B2)] ^ TE1[get_byte(1, B3)] ^ - TE2[get_byte(2, B0)] ^ TE3[get_byte(3, B1)] ^ EK[4*j+2]; + TE2[get_byte(2, B0)] ^ TE3[get_byte(3, B1)] ^ EK_2; T3 = TE0[get_byte(0, B3)] ^ TE1[get_byte(1, B0)] ^ - TE2[get_byte(2, B1)] ^ TE3[get_byte(3, B2)] ^ EK[4*j+3]; + TE2[get_byte(2, B1)] ^ TE3[get_byte(3, B2)] ^ EK_3; B0 = TE0[get_byte(0, T0)] ^ TE1[get_byte(1, T1)] ^ - TE2[get_byte(2, T2)] ^ TE3[get_byte(3, T3)] ^ EK[4*j+4]; + 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[4*j+5]; + 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[4*j+6]; + 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[4*j+7]; + TE2[get_byte(2, T1)] ^ TE3[get_byte(3, T2)] ^ EK_7; } out[ 0] = SE[get_byte(0, B0)] ^ ME[16]; |