LBRYCommunity/cpuminer
1
0
Fork 0
Code Issues 3 Pull requests Projects Releases Packages Wiki Activity

Add 3-way scrypt implementation

Browse source
This commit is contained in:
pooler 2012-01-11 14:52:04 +01:00
parent 476e2325ee
commit a4d636a645
2 changed files with 801 additions and 346 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1067
scrypt-x64.S
View file

File diff suppressed because it is too large Load diff

80
scrypt.c
View file

@ -370,12 +370,13 @@ salsa20_8(uint32_t B[16], const uint32_t Bx[16])
#if defined(__x86_64__) #if defined(__x86_64__)
#define DUAL_SCRYPT #define SCRYPT_3WAY
#define SCRYPT_BUFFER_SIZE (2 * 131072 + 63) #define SCRYPT_BUFFER_SIZE (3 * 131072 + 63)
int prefer_dual_scrypt(); int scrypt_best_throughput();
void scrypt_core(uint32_t *X, uint32_t *V); void scrypt_core(uint32_t *X, uint32_t *V);
void dual_scrypt_core(uint32_t *X, uint32_t *Y, uint32_t *V); void scrypt_core_2way(uint32_t *X, uint32_t *Y, uint32_t *V);
void scrypt_core_3way(uint32_t *X, uint32_t *Y, uint32_t *Z, uint32_t *V);
#elif defined(__i386__) #elif defined(__i386__)
@ -434,7 +435,7 @@ unsigned char *scrypt_buffer_alloc() {
scratchpad size needs to be at least 63 + (128 * r * p) + (256 * r + 64) + (128 * r * N) bytes scratchpad size needs to be at least 63 + (128 * r * p) + (256 * r + 64) + (128 * r * N) bytes
r = 1, p = 1, N = 1024 r = 1, p = 1, N = 1024
*/ */
static void scrypt_1024_1_1_256_sp(const uint32_t* input, uint32_t *res, unsigned char *scratchpad) static void scrypt_1024_1_1_256_sp(const uint32_t* input, uint32_t *output, unsigned char *scratchpad)
{ {
uint32_t tstate[8], ostate[8]; uint32_t tstate[8], ostate[8];
uint32_t *V; uint32_t *V;
@ -446,13 +447,16 @@ static void scrypt_1024_1_1_256_sp(const uint32_t* input, uint32_t *res, unsigne
scrypt_core(X, V); scrypt_core(X, V);
return PBKDF2_SHA256_80_128_32(tstate, ostate, input, X, res); return PBKDF2_SHA256_80_128_32(tstate, ostate, input, X, output);
} }
#ifdef DUAL_SCRYPT #ifdef SCRYPT_3WAY
static void dual_scrypt_1024_1_1_256_sp(const uint32_t *input1, const uint32_t *input2, uint32_t *res1, uint32_t *res2, unsigned char *scratchpad)
static void scrypt_1024_1_1_256_sp_2way(const uint32_t *input1, const uint32_t *input2,
uint32_t *output1, uint32_t *output2, unsigned char *scratchpad)
{ {
uint32_t tstate1[8], tstate2[8], ostate1[8], ostate2[8]; uint32_t tstate1[8], tstate2[8];
uint32_t ostate1[8], ostate2[8];
uint32_t *V; uint32_t *V;
uint32_t X[32], Y[32]; uint32_t X[32], Y[32];
V = (uint32_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63)); V = (uint32_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63));
@ -462,11 +466,35 @@ static void dual_scrypt_1024_1_1_256_sp(const uint32_t *input1, const uint32_t *
PBKDF2_SHA256_80_128(tstate1, ostate1, input1, X); PBKDF2_SHA256_80_128(tstate1, ostate1, input1, X);
PBKDF2_SHA256_80_128(tstate2, ostate2, input2, Y); PBKDF2_SHA256_80_128(tstate2, ostate2, input2, Y);
dual_scrypt_core(X, Y, V); scrypt_core_2way(X, Y, V);
PBKDF2_SHA256_80_128_32(tstate1, ostate1, input1, X, res1); PBKDF2_SHA256_80_128_32(tstate1, ostate1, input1, X, output1);
PBKDF2_SHA256_80_128_32(tstate2, ostate2, input2, Y, res2); PBKDF2_SHA256_80_128_32(tstate2, ostate2, input2, Y, output2);
} }
static void scrypt_1024_1_1_256_sp_3way(const uint32_t *input1, const uint32_t *input2, const uint32_t *input3,
uint32_t *output1, uint32_t *output2, uint32_t *output3, unsigned char *scratchpad)
{
uint32_t tstate1[8], tstate2[8], tstate3[8];
uint32_t ostate1[8], ostate2[8], ostate3[8];
uint32_t *V;
uint32_t X[32], Y[32], Z[32];
V = (uint32_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63));
PBKDF2_SHA256_80_128_init(input1, tstate1, ostate1);
PBKDF2_SHA256_80_128_init(input2, tstate2, ostate2);
PBKDF2_SHA256_80_128_init(input3, tstate3, ostate3);
PBKDF2_SHA256_80_128(tstate1, ostate1, input1, X);
PBKDF2_SHA256_80_128(tstate2, ostate2, input2, Y);
PBKDF2_SHA256_80_128(tstate3, ostate3, input3, Z);
scrypt_core_3way(X, Y, Z, V);
PBKDF2_SHA256_80_128_32(tstate1, ostate1, input1, X, output1);
PBKDF2_SHA256_80_128_32(tstate2, ostate2, input2, Y, output2);
PBKDF2_SHA256_80_128_32(tstate3, ostate3, input3, Z, output3);
}
#endif #endif
int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf, int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
@ -474,9 +502,10 @@ int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
uint32_t max_nonce, unsigned long *hashes_done) uint32_t max_nonce, unsigned long *hashes_done)
{ {
uint32_t data[20], hash[8]; uint32_t data[20], hash[8];
#ifdef DUAL_SCRYPT #ifdef SCRYPT_3WAY
uint32_t data2[20], hash2[8]; uint32_t data2[20], hash2[8];
int use_dual; uint32_t data3[20], hash3[8];
int throughput;
#endif #endif
uint32_t n = 0; uint32_t n = 0;
uint32_t Htarg = le32dec(&((const uint32_t *)ptarget)[7]); uint32_t Htarg = le32dec(&((const uint32_t *)ptarget)[7]);
@ -486,17 +515,28 @@ int scanhash_scrypt(int thr_id, unsigned char *pdata, unsigned char *scratchbuf,
for (i = 0; i < 19; i++) for (i = 0; i < 19; i++)
data[i] = be32dec(&((const uint32_t *)pdata)[i]); data[i] = be32dec(&((const uint32_t *)pdata)[i]);
#ifdef DUAL_SCRYPT #ifdef SCRYPT_3WAY
memcpy(data2, data, 76); memcpy(data2, data, 80);
use_dual = prefer_dual_scrypt(); memcpy(data3, data, 80);
throughput = scrypt_best_throughput();
#endif #endif
while (1) { while (1) {
data[19] = n++; data[19] = n++;
#ifdef DUAL_SCRYPT #ifdef SCRYPT_3WAY
if (use_dual && n < max_nonce) { if (throughput >= 2 && n < max_nonce) {
data2[19] = n++; data2[19] = n++;
dual_scrypt_1024_1_1_256_sp(data, data2, hash, hash2, scratchbuf); if (throughput >= 3 && n < max_nonce) {
data3[19] = n++;
scrypt_1024_1_1_256_sp_3way(data, data2, data3, hash, hash2, hash3, scratchbuf);
if (hash3[7] <= Htarg) {
be32enc(&((uint32_t *)pdata)[19], data3[19]);
*hashes_done = n;
return true;
}
} else {
scrypt_1024_1_1_256_sp_2way(data, data2, hash, hash2, scratchbuf);
}
if (hash2[7] <= Htarg) { if (hash2[7] <= Htarg) {
be32enc(&((uint32_t *)pdata)[19], data2[19]); be32enc(&((uint32_t *)pdata)[19], data2[19]);
*hashes_done = n; *hashes_done = n;