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scrypt/nscrypt code optimization and cleanup.

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unknown 2014-02-20 10:46:13 +01:00
parent c8e4ec33dd
commit 614d7402e5
1 changed files with 10 additions and 19 deletions
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29
scrypt.c
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@ -357,8 +357,6 @@ salsa20_8(uint32_t B[16], const uint32_t Bx[16])
scratchpad size needs to be at least 63 + (128 * r * p) + (256 * r + 64) + (128 * r * N) bytes
*/
#define scrypt_1024_1_1_256_sp(input, scratchpad, ostate) scrypt_n_1_1_256_sp(input, scratchpad, ostate, 1024)
static void scrypt_n_1_1_256_sp(const uint32_t* input, char* scratchpad, uint32_t *ostate, const cl_uint n)
{
uint32_t * V;
@ -405,34 +403,24 @@ static void scrypt_n_1_1_256_sp(const uint32_t* input, char* scratchpad, uint32_
PBKDF2_SHA256_80_128_32(input, X, ostate);
}
/* 131583 rounded up to 4 byte alignment */
#define SCRATCHBUF_SIZE (131584)
void scrypt_regenhash(struct work *work)
{
uint32_t data[20];
char *scratchbuf;
uint32_t timestamp;
cl_uint nfactor = 10; // scrypt default
uint32_t *nonce = (uint32_t *)(work->data + 76);
uint32_t *ohash = (uint32_t *)(work->hash);
if (use_nscrypt) {
timestamp = bswap_32(*((uint32_t *)(work->data + 17*4)));
uint32_t timestamp = bswap_32(*((uint32_t *)(work->data + 17*4)));
nfactor = vert_GetNfactor(timestamp) + 1;
}
be32enc_vect(data, (const uint32_t *)work->data, 19);
data[19] = htobe32(*nonce);
if (use_nscrypt) {
scratchbuf = (char *)alloca((1 << nfactor) * 128 + 512);
scrypt_n_1_1_256_sp(data, scratchbuf, ohash, (1 << nfactor));
}
else {
scratchbuf = (char *)alloca(SCRATCHBUF_SIZE);
scrypt_1024_1_1_256_sp(data, scratchbuf, ohash);
}
scratchbuf = (char *)alloca((1 << nfactor) * 128 + 512);
scrypt_n_1_1_256_sp(data, scratchbuf, ohash, (1 << nfactor));
flip32(ohash, ohash);
}
@ -445,11 +433,13 @@ int scrypt_test(unsigned char *pdata, const unsigned char *ptarget, uint32_t non
uint32_t tmp_hash7, Htarg = le32toh(((const uint32_t *)ptarget)[7]);
uint32_t data[20], ohash[8];
char *scratchbuf;
cl_uint nfactor = 10; // scrypt default
be32enc_vect(data, (const uint32_t *)pdata, 19);
data[19] = htobe32(nonce);
scratchbuf = (char *)alloca(SCRATCHBUF_SIZE);
scrypt_1024_1_1_256_sp(data, scratchbuf, ohash);
scratchbuf = (char *)alloca((1 << nfactor) * 128 + 512);
scrypt_n_1_1_256_sp(data, scratchbuf, ohash, (1 << nfactor));
tmp_hash7 = be32toh(ohash[7]);
applog(LOG_DEBUG, "htarget %08lx diff1 %08lx hash %08lx",
@ -474,10 +464,11 @@ bool scanhash_scrypt(struct thr_info *thr, const unsigned char __maybe_unused *p
uint32_t tmp_hash7;
uint32_t Htarg = le32toh(((const uint32_t *)ptarget)[7]);
bool ret = false;
cl_uint nfactor = 10; // scrypt default
be32enc_vect(data, (const uint32_t *)pdata, 19);
scratchbuf = (char *)malloc(SCRATCHBUF_SIZE);
scratchbuf = (char *)alloca((1 << nfactor) * 128 + 512);
if (unlikely(!scratchbuf)) {
applog(LOG_ERR, "Failed to malloc scratchbuf in scanhash_scrypt");
return ret;
@ -488,7 +479,7 @@ bool scanhash_scrypt(struct thr_info *thr, const unsigned char __maybe_unused *p
*nonce = ++n;
data[19] = htobe32(n);
scrypt_1024_1_1_256_sp(data, scratchbuf, ostate);
scrypt_n_1_1_256_sp(data, scratchbuf, ohash, (1 << nfactor));
tmp_hash7 = be32toh(ostate[7]);
if (unlikely(tmp_hash7 <= Htarg)) {