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further optimized bmw_c_speed

This commit is contained in:
bg 2010-05-08 13:35:10 +02:00
parent fc42022e7c
commit b84f1a234d
1 changed files with 3 additions and 10 deletions
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13
bmw/bmw_small_speed.c
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@ -204,15 +204,9 @@ void bmw_small_f1(uint32_t* q, const void* m, const void* h){
static
void bmw_small_f2(uint32_t* h, uint32_t* q, const uint32_t* m){
uint32_t xl=0, xh;
uint8_t i;
for(i=16;i<24;++i){
xl ^= q[i];
}
xh = xl;
for(i=24;i<32;++i){
xh ^= q[i];
}
uint32_t xl, xh;
xl = q[16] ^ q[17] ^ q[18] ^ q[19] ^ q[20] ^ q[21] ^ q[22] ^ q[23];
xh = xl ^ q[24] ^ q[25] ^ q[26] ^ q[27] ^ q[28] ^ q[29] ^ q[30] ^ q[31];
#if DEBUG
cli_putstr("\r\n XL = ");
cli_hexdump_rev(&xl, 4);
@ -237,7 +231,6 @@ void bmw_small_f2(uint32_t* h, uint32_t* q, const uint32_t* m){
h[13] = ROTL32(h[1], 14) + (xh ^ q[29] ^ m[13]) + (SHR32(xl, 4) ^ q[20] ^ q[13]);
h[14] = ROTL32(h[2], 15) + (xh ^ q[30] ^ m[14]) + (SHR32(xl, 7) ^ q[21] ^ q[14]);
h[15] = ROTL32(h[3], 16) + (xh ^ q[31] ^ m[15]) + (SHR32(xl, 2) ^ q[22] ^ q[15]);
}
void bmw_small_nextBlock(bmw_small_ctx_t* ctx, const void* block){