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further optimized bmw_c_speed

This commit is contained in:
bg 2010-05-08 13:17:42 +02:00
parent 2e57335be9
commit fc42022e7c
1 changed files with 20 additions and 40 deletions
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60
bmw/bmw_small_speed.c
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@ -203,7 +203,7 @@ 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 void* m){
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){
@ -219,45 +219,25 @@ void bmw_small_f2(uint32_t* h, uint32_t* q, const void* m){
cli_putstr("\r\n XH = ");
cli_hexdump_rev(&xh, 4);
#endif
memcpy(h, m, 16*4);
h[0] ^= SHL32(xh, 5) ^ SHR32(q[16], 5);
h[1] ^= SHR32(xh, 7) ^ SHL32(q[17], 8);
h[2] ^= SHR32(xh, 5) ^ SHL32(q[18], 5);
h[3] ^= SHR32(xh, 1) ^ SHL32(q[19], 5);
h[4] ^= SHR32(xh, 3) ^ q[20];
h[5] ^= SHL32(xh, 6) ^ SHR32(q[21], 6);
h[6] ^= SHR32(xh, 4) ^ SHL32(q[22], 6);
h[7] ^= SHR32(xh,11) ^ SHL32(q[23], 2);
for(i=0; i<8; ++i){
h[i] += xl ^ q[24+i] ^ q[i];
}
for(i=0; i<8; ++i){
h[8+i] ^= xh ^ q[24+i];
h[8+i] += ROTL32(h[(4+i)%8],i+9);
}
/*
h[ 8] += SHL32(xl, 8) ^ q[23] ^ q[ 8];
h[ 9] += SHR32(xl, 6) ^ q[16] ^ q[ 9];
h[10] += SHL32(xl, 6) ^ q[17] ^ q[10];
h[11] += SHL32(xl, 4) ^ q[18] ^ q[11];
h[12] += SHR32(xl, 3) ^ q[19] ^ q[12];
h[13] += SHR32(xl, 4) ^ q[20] ^ q[13];
h[14] += SHR32(xl, 7) ^ q[21] ^ q[14];
h[15] += SHR32(xl, 2) ^ q[22] ^ q[15];
*/
i=6;
do{
q[9+i] ^= q[16+i];
}while(i--);
q[8] ^= q[23];
h[ 8] += SHL32(xl, 8) ^ q[ 8];
h[ 9] += SHR32(xl, 6) ^ q[ 9];
h[10] += SHL32(xl, 6) ^ q[10];
h[11] += SHL32(xl, 4) ^ q[11];
h[12] += SHR32(xl, 3) ^ q[12];
h[13] += SHR32(xl, 4) ^ q[13];
h[14] += SHR32(xl, 7) ^ q[14];
h[15] += SHR32(xl, 2) ^ q[15];
h[0] = (SHL32(xh, 5) ^ SHR32(q[16], 5) ^ m[ 0]) + (xl ^ q[24] ^ q[ 0]);
h[1] = (SHR32(xh, 7) ^ SHL32(q[17], 8) ^ m[ 1]) + (xl ^ q[25] ^ q[ 1]);
h[2] = (SHR32(xh, 5) ^ SHL32(q[18], 5) ^ m[ 2]) + (xl ^ q[26] ^ q[ 2]);
h[3] = (SHR32(xh, 1) ^ SHL32(q[19], 5) ^ m[ 3]) + (xl ^ q[27] ^ q[ 3]);
h[4] = (SHR32(xh, 3) ^ q[20] ^ m[ 4]) + (xl ^ q[28] ^ q[ 4]);
h[5] = (SHL32(xh, 6) ^ SHR32(q[21], 6) ^ m[ 5]) + (xl ^ q[29] ^ q[ 5]);
h[6] = (SHR32(xh, 4) ^ SHL32(q[22], 6) ^ m[ 6]) + (xl ^ q[30] ^ q[ 6]);
h[7] = (SHR32(xh,11) ^ SHL32(q[23], 2) ^ m[ 7]) + (xl ^ q[31] ^ q[ 7]);
h[ 8] = ROTL32(h[4], 9) + (xh ^ q[24] ^ m[ 8]) + (SHL32(xl, 8) ^ q[23] ^ q[ 8]);
h[ 9] = ROTL32(h[5], 10) + (xh ^ q[25] ^ m[ 9]) + (SHR32(xl, 6) ^ q[16] ^ q[ 9]);
h[10] = ROTL32(h[6], 11) + (xh ^ q[26] ^ m[10]) + (SHL32(xl, 6) ^ q[17] ^ q[10]);
h[11] = ROTL32(h[7], 12) + (xh ^ q[27] ^ m[11]) + (SHL32(xl, 4) ^ q[18] ^ q[11]);
h[12] = ROTL32(h[0], 13) + (xh ^ q[28] ^ m[12]) + (SHR32(xl, 3) ^ q[19] ^ q[12]);
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){