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https://github.com/JayDDee/cpuminer-opt.git
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59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#include "algo-gate-api.h"
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#if !defined(SKEIN_8WAY) && !defined(SKEIN_4WAY)
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#include <string.h>
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#include <stdint.h>
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#include "sph_skein.h"
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#include "algo/sha/sph_sha2.h"
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void skeinhash(void *state, const void *input)
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{
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uint32_t hash[16] __attribute__ ((aligned (64)));
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sph_skein512_context ctx_skein;
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sph_sha256_context ctx_sha256;
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sph_skein512_init( &ctx_skein );
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sph_skein512( &ctx_skein, input, 80 );
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sph_skein512_close( &ctx_skein, hash );
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sph_sha256_init( &ctx_sha256 );
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sph_sha256( &ctx_sha256, hash, 64 );
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sph_sha256_close( &ctx_sha256, hash );
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memcpy(state, hash, 32);
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}
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int scanhash_skein( struct work *work, uint32_t max_nonce,
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uint64_t *hashes_done, struct thr_info *mythr )
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{
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uint32_t *pdata = work->data;
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uint32_t *ptarget = work->target;
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uint32_t hash64[8] __attribute__ ((aligned (64)));
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uint32_t endiandata[20] __attribute__ ((aligned (64)));
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const uint32_t Htarg = ptarget[7];
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const uint32_t first_nonce = pdata[19];
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uint32_t n = first_nonce;
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int thr_id = mythr->id; // thr_id arg is deprecated
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swab32_array( endiandata, pdata, 20 );
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do {
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be32enc(&endiandata[19], n);
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skeinhash(hash64, endiandata);
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if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
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*hashes_done = n - first_nonce + 1;
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pdata[19] = n;
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return true;
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}
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n++;
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} while (n < max_nonce && !work_restart[thr_id].restart);
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*hashes_done = n - first_nonce + 1;
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pdata[19] = n;
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return 0;
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}
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#endif
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