#define ROTL64(a,n) (((a)<<(n))|((a)>>(64-(n))))
#define ROTR64(a,n) (((a)>>(n))|((a)<<(64-(n))))
-#define TWEAK 1
-#define BUG24 0
-#define F0_HACK 0
#define DEBUG 0
return r;
}
-#if F0_HACK==2
-/* to understand this implementation take a look at f0-opt-table.txt */
-static uint16_t hack_table[5] = { 0x0311, 0xDDB3, 0x2A79, 0x07AA, 0x51C2 };
-static uint8_t offset_table[5] = { 4+16, 6+16, 9+16, 12+16, 13+16 };
-
-
-static
-void bmw_large_f0(uint64_t* q, const uint64_t* h, const void* m){
- uint16_t hack_reg;
- uint8_t i,j,c;
- uint64_t(*s[])(uint64_t)={ bmw_large_s0, bmw_large_s1, bmw_large_s2,
- bmw_large_s3, bmw_large_s4 };
- for(i=0; i<16; ++i){
- ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
- }
- dump_x(h, 16, 'T');
- memset(q, 0, 8*16);
- c=4;
- do{
- i=15;
- j = offset_table[c];
- hack_reg = hack_table[c];
- do{
- if(hack_reg&1){
- q[i]-= h[j&15];
- }else{
- q[i]+= h[j&15];
- }
- --j;
- hack_reg>>= 1;
- }while(i--!=0);
- }while(c--!=0);
- dump_x(q, 16, 'W');
- for(i=0; i<16; ++i){
- q[i] = s[i%5](q[i]);
- }
-#if TWEAK
- for(i=0; i<16; ++i){
- ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
- }
- for(i=0; i<16; ++i){
- q[i] += h[(i+1)&0xf];
- }
-#endif /* TWEAK */
-}
-#endif /* F0_HACK==2 */
-
-#if F0_HACK==1
-static
-uint8_t f0_lut[] PROGMEM ={
- 5<<1, ( 7<<1)+1, (10<<1)+0, (13<<1)+0, (14<<1)+0,
- 6<<1, ( 8<<1)+1, (11<<1)+0, (14<<1)+0, (15<<1)+1,
- 0<<1, ( 7<<1)+0, ( 9<<1)+0, (12<<1)+1, (15<<1)+0,
- 0<<1, ( 1<<1)+1, ( 8<<1)+0, (10<<1)+1, (13<<1)+0,
- 1<<1, ( 2<<1)+0, ( 9<<1)+0, (11<<1)+1, (14<<1)+1,
- 3<<1, ( 2<<1)+1, (10<<1)+0, (12<<1)+1, (15<<1)+0,
- 4<<1, ( 0<<1)+1, ( 3<<1)+1, (11<<1)+1, (13<<1)+0,
- 1<<1, ( 4<<1)+1, ( 5<<1)+1, (12<<1)+1, (14<<1)+1,
- 2<<1, ( 5<<1)+1, ( 6<<1)+1, (13<<1)+0, (15<<1)+1,
- 0<<1, ( 3<<1)+1, ( 6<<1)+0, ( 7<<1)+1, (14<<1)+0,
- 8<<1, ( 1<<1)+1, ( 4<<1)+1, ( 7<<1)+1, (15<<1)+0,
- 8<<1, ( 0<<1)+1, ( 2<<1)+1, ( 5<<1)+1, ( 9<<1)+0,
- 1<<1, ( 3<<1)+0, ( 6<<1)+1, ( 9<<1)+1, (10<<1)+0,
- 2<<1, ( 4<<1)+0, ( 7<<1)+0, (10<<1)+0, (11<<1)+0,
- 3<<1, ( 5<<1)+1, ( 8<<1)+0, (11<<1)+1, (12<<1)+1,
- 12<<1, ( 4<<1)+1, ( 6<<1)+1, ( 9<<1)+1, (13<<1)+0
-};
-
-static
-void bmw_large_f0(uint64_t* q, const uint64_t* h, const void* m){
- uint8_t i,j=-1,v,sign,l=0;
- uint64_t(*s[])(uint64_t)={ bmw_large_s0, bmw_large_s1, bmw_large_s2,
- bmw_large_s3, bmw_large_s4 };
- for(i=0; i<16; ++i){
- ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
- }
- dump_x(h, 16, 'T');
-// memset(q, 0, 4*16);
- for(i=0; i<5*16; ++i){
- v = pgm_read_byte(f0_lut+i);
- sign = v&1;
- v >>=1;
- if(i==l){
- j++;
- l+=5;
- q[j] = h[v];
- continue;
- }
- if(sign){
- q[j] -= h[v];
- }else{
- q[j] += h[v];
- }
- }
- dump_x(q, 16, 'W');
- for(i=0; i<16; ++i){
- q[i] = s[i%5](q[i]);
- }
-#if TWEAK
- for(i=0; i<16; ++i){
- ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
- }
- for(i=0; i<16; ++i){
- q[i] += h[(i+1)&0xf];
- }
-#endif /* TWEAK */
-}
-#endif /* F0_HACK==1 */
-
-#if F0_HACK==0
static
void bmw_large_f0(uint64_t* q, const uint64_t* h, const void* m){
uint8_t i;
q[15] = S64_0(q[15]);
for(i=0; i<16; ++i){
- ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
- }
- for(i=0; i<16; ++i){
- q[i] += h[(i+1)&0xf];
+ q[(i+15)&15] += ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
+
}
}
-#endif /* F0_HACK==0 */
static
void bmw_large_f1(uint64_t* q, const void* m, const uint64_t* h){
}
static
-void bmw_large_f2(uint64_t* h, const uint64_t* q, const void* m){
- uint64_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];
- }
+void bmw_large_f2(uint64_t* h, const uint64_t* q, const uint64_t* m){
+
+ uint64_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);
+ cli_hexdump_rev(&xl, 8);
cli_putstr("\r\n XH = ");
- cli_hexdump_rev(&xh, 4);
+ cli_hexdump_rev(&xh, 8);
#endif
- memcpy(h, m, 16*8);
- h[0] ^= SHL64(xh, 5) ^ SHR64(q[16], 5);
- h[1] ^= SHR64(xh, 7) ^ SHL64(q[17], 8);
- h[2] ^= SHR64(xh, 5) ^ SHL64(q[18], 5);
- h[3] ^= SHR64(xh, 1) ^ SHL64(q[19], 5);
- h[4] ^= SHR64(xh, 3) ^ q[20];
- h[5] ^= SHL64(xh, 6) ^ SHR64(q[21], 6);
- h[6] ^= SHR64(xh, 4) ^ SHL64(q[22], 6);
- h[7] ^= SHR64(xh,11) ^ SHL64(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] += ROTL64(h[(4+i)%8],i+9);
- }
- h[ 8] += SHL64(xl, 8) ^ q[23] ^ q[ 8];
- h[ 9] += SHR64(xl, 6) ^ q[16] ^ q[ 9];
- h[10] += SHL64(xl, 6) ^ q[17] ^ q[10];
- h[11] += SHL64(xl, 4) ^ q[18] ^ q[11];
- h[12] += SHR64(xl, 3) ^ q[19] ^ q[12];
- h[13] += SHR64(xl, 4) ^ q[20] ^ q[13];
- h[14] += SHR64(xl, 7) ^ q[21] ^ q[14];
- h[15] += SHR64(xl, 2) ^ q[22] ^ q[15];
+
+ h[0] = (SHL64(xh, 5) ^ SHR64(q[16], 5) ^ m[ 0]) + (xl ^ q[24] ^ q[ 0]);
+ h[1] = (SHR64(xh, 7) ^ SHL64(q[17], 8) ^ m[ 1]) + (xl ^ q[25] ^ q[ 1]);
+ h[2] = (SHR64(xh, 5) ^ SHL64(q[18], 5) ^ m[ 2]) + (xl ^ q[26] ^ q[ 2]);
+ h[3] = (SHR64(xh, 1) ^ SHL64(q[19], 5) ^ m[ 3]) + (xl ^ q[27] ^ q[ 3]);
+ h[4] = (SHR64(xh, 3) ^ q[20] ^ m[ 4]) + (xl ^ q[28] ^ q[ 4]);
+ h[5] = (SHL64(xh, 6) ^ SHR64(q[21], 6) ^ m[ 5]) + (xl ^ q[29] ^ q[ 5]);
+ h[6] = (SHR64(xh, 4) ^ SHL64(q[22], 6) ^ m[ 6]) + (xl ^ q[30] ^ q[ 6]);
+ h[7] = (SHR64(xh,11) ^ SHL64(q[23], 2) ^ m[ 7]) + (xl ^ q[31] ^ q[ 7]);
+
+ h[ 8] = ROTL64(h[4], 9) + (xh ^ q[24] ^ m[ 8]) + (SHL64(xl, 8) ^ q[23] ^ q[ 8]);
+ h[ 9] = ROTL64(h[5], 10) + (xh ^ q[25] ^ m[ 9]) + (SHR64(xl, 6) ^ q[16] ^ q[ 9]);
+ h[10] = ROTL64(h[6], 11) + (xh ^ q[26] ^ m[10]) + (SHL64(xl, 6) ^ q[17] ^ q[10]);
+ h[11] = ROTL64(h[7], 12) + (xh ^ q[27] ^ m[11]) + (SHL64(xl, 4) ^ q[18] ^ q[11]);
+ h[12] = ROTL64(h[0], 13) + (xh ^ q[28] ^ m[12]) + (SHR64(xl, 3) ^ q[19] ^ q[12]);
+ h[13] = ROTL64(h[1], 14) + (xh ^ q[29] ^ m[13]) + (SHR64(xl, 4) ^ q[20] ^ q[13]);
+ h[14] = ROTL64(h[2], 15) + (xh ^ q[30] ^ m[14]) + (SHR64(xl, 7) ^ q[21] ^ q[14]);
+ h[15] = ROTL64(h[3], 16) + (xh ^ q[31] ^ m[15]) + (SHR64(xl, 2) ^ q[22] ^ q[15]);
}
void bmw_large_nextBlock(bmw_large_ctx_t* ctx, const void* block){
}
*((uint64_t*)&(buffer[128-8])) = (uint64_t)(ctx->counter*1024LL)+(uint64_t)length_b;
bmw_large_nextBlock(ctx, buffer);
-#if TWEAK
uint8_t i;
uint64_t q[32];
memset(buffer, 0xaa, 128);
bmw_large_f1(q, ctx->h, (uint64_t*)buffer);
bmw_large_f2((uint64_t*)buffer, q, ctx->h);
memcpy(ctx->h, buffer, 128);
-#endif
}
void bmw384_init(bmw384_ctx_t* ctx){
projects / arm-crypto-lib.git / blobdiff