uint256 CPureBlockHeader::GetPoWHash(int algo, const Consensus::Params& consensusParams) const
{
switch (algo)
{
case ALGO_SHA256D:
return GetHash();
case ALGO_SCRYPT:
{
uint256 thash;
scrypt_1024_1_1_256(BEGIN(nVersion), BEGIN(thash));
return thash;
}
case ALGO_GROESTL:
return HashGroestl(BEGIN(nVersion), END(nNonce));
case ALGO_SKEIN:
return HashSkein(BEGIN(nVersion), END(nNonce));
case ALGO_QUBIT:
return HashQubit(BEGIN(nVersion), END(nNonce));
case ALGO_YESCRYPT:
{
uint256 thash;
yescrypt_hash(BEGIN(nVersion), BEGIN(thash));
return thash;
}
}
return GetHash();
}
void yescrypt_regenhash(struct work *work)
{
uint32_t data[20];
uint32_t *nonce = (uint32_t *)(work->data + 76);
uint32_t *ohash = (uint32_t *)(work->hash);
be32enc_vect(data, (const uint32_t *)work->data, 19);
data[19] = htobe32(*nonce);
yescrypt_hash((unsigned char*)data, (unsigned char*)ohash);
}
bool scanhash_yescrypt(struct thr_info *thr, const unsigned char __maybe_unused *pmidstate,
unsigned char *pdata, unsigned char __maybe_unused *phash1,
unsigned char __maybe_unused *phash, const unsigned char *ptarget,
uint32_t max_nonce, uint32_t *last_nonce, uint32_t n)
{
uint32_t *nonce = (uint32_t *)(pdata + 76);
uint32_t data[20];
uint32_t tmp_hash7;
uint32_t Htarg = le32toh(((const uint32_t *)ptarget)[7]);
bool ret = false;
be32enc_vect(data, (const uint32_t *)pdata, 19);
while (1)
{
uint32_t ostate[8];
*nonce = ++n;
data[19] = (n);
yescrypt_hash((unsigned char*)data, (unsigned char*)ostate);
tmp_hash7 = (ostate[7]);
applog(LOG_INFO, "data7 %08lx", (long unsigned int)data[7]);
if (unlikely(tmp_hash7 <= Htarg))
{
((uint32_t *)pdata)[19] = htobe32(n);
*last_nonce = n;
ret = true;
break;
}
if (unlikely((n >= max_nonce) || thr->work_restart))
{
*last_nonce = n;
break;
}
}
return ret;
}
/* Used externally as confirmation of correct OCL code */
int yescrypt_test(unsigned char *pdata, const unsigned char *ptarget, uint32_t nonce)
{
uint32_t tmp_hash7, Htarg = le32toh(((const uint32_t *)ptarget)[7]);
uint32_t data[20], ohash[8];
be32enc_vect(data, (const uint32_t *)pdata, 19);
data[19] = htobe32(nonce);
yescrypt_hash((unsigned char*)data,(unsigned char*)ohash);
tmp_hash7 = be32toh(ohash[7]);
applog(LOG_DEBUG, "htarget %08lx diff1 %08lx hash %08lx",
(long unsigned int)Htarg,
(long unsigned int)diff1targ,
(long unsigned int)tmp_hash7);
if (tmp_hash7 > diff1targ)
return -1;
if (tmp_hash7 > Htarg)
return 0;
return 1;
}
/* for util.c test */
void yescrypthash(void *output, const void *input)
{
yescrypt_hash((char*) input, (char*) output, 80);
}
