v3.5.9

algo/blake/blake2s.c

@@ -0,0 +1,85 @@
+#include "miner.h"
+#include "algo-gate-api.h"
+
+#include <string.h>
+#include <stdint.h>
+
+#include "crypto/blake2s.h"
+
+static __thread blake2s_state s_midstate;
+static __thread blake2s_state s_ctx;
+#define MIDLEN 76
+
+void blake2s_hash(void *output, const void *input)
+{
+	unsigned char _ALIGN(64) hash[BLAKE2S_OUTBYTES];
+	blake2s_state blake2_ctx;
+
+	blake2s_init(&blake2_ctx, BLAKE2S_OUTBYTES);
+	blake2s_update(&blake2_ctx, input, 80);
+	blake2s_final(&blake2_ctx, hash, BLAKE2S_OUTBYTES);
+
+	memcpy(output, hash, 32);
+}
+
+static void blake2s_hash_end(uint32_t *output, const uint32_t *input)
+{
+	s_ctx.buflen = MIDLEN;
+	memcpy(&s_ctx, &s_midstate, 32 + 16 + MIDLEN);
+	blake2s_update(&s_ctx, (uint8_t*) &input[MIDLEN/4], 80 - MIDLEN);
+	blake2s_final(&s_ctx, (uint8_t*) output, BLAKE2S_OUTBYTES);
+}
+
+int scanhash_blake2s(int thr_id, struct work *work,
+	uint32_t max_nonce, uint64_t *hashes_done)
+{
+        uint32_t *pdata = work->data;
+        uint32_t *ptarget = work->target;
+
+	uint32_t _ALIGN(64) hash64[8];
+	uint32_t _ALIGN(64) endiandata[20];
+
+	const uint32_t Htarg = ptarget[7];
+	const uint32_t first_nonce = pdata[19];
+
+	uint32_t n = first_nonce;
+
+        swab32_array( endiandata, pdata, 20 );
+
+	// midstate
+	blake2s_init(&s_midstate, BLAKE2S_OUTBYTES);
+	blake2s_update(&s_midstate, (uint8_t*) endiandata, MIDLEN);
+	memcpy(&s_ctx, &s_midstate, sizeof(blake2s_state));
+
+	do {
+		be32enc(&endiandata[19], n);
+		blake2s_hash_end(hash64, endiandata);
+		if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
+			*hashes_done = n - first_nonce + 1;
+			pdata[19] = n;
+			return true;
+		}
+		n++;
+
+	} while (n < max_nonce && !work_restart[thr_id].restart);
+
+	*hashes_done = n - first_nonce + 1;
+	pdata[19] = n;
+
+	return 0;
+}
+
+// changed to get_max64_0x3fffffLL in cpuminer-multi-decred
+int64_t blake2s_get_max64 ()
+{
+   return 0x7ffffLL;
+}
+
+bool register_blake2s_algo( algo_gate_t* gate )
+{
+  gate->scanhash  = (void*)&scanhash_blake2s;
+  gate->hash      = (void*)&blake2s_hash;
+  gate->get_max64 = (void*)&blake2s_get_max64;
+  return true;
+};
+