Calculate randomx hashes

src/miner.cpp

@@ -1133,9 +1133,33 @@ void static RandomXMiner()
                 arith_uint256 hashTarget;
                 hashTarget = HASHTarget;
 
-                // TODO: RandomX solver code
+                char randomxHash[RANDOMX_HASH_SIZE];
-                randomx_flags flags    = randomx_get_flags();
+                // TODO: decide on real RandomX key and input
-                randomx_cache *myCache = randomx_alloc_cache(flags);
+                const char randomxKey[]     = "HUSH RandomX testing key";
+                const char randomxInput[]   = "HUSH RandomX testing input";
+                randomx_flags flags         = randomx_get_flags();
+                randomx_cache *randomxCache = randomx_alloc_cache(flags);
+
+                if (randomxCache == NULL) {
+                    LogPrintf("RandomX cache is null, something is wrong, cannot mine!\n");
+                    return;
+                }
+
+                randomx_init_cache(randomxCache, &randomxKey, sizeof randomxKey);
+                randomx_vm *myVM = randomx_create_vm(flags, randomxCache, NULL);
+
+                randomx_calculate_hash(myVM, &randomxInput, sizeof randomxInput, randomxHash);
+
+                randomx_destroy_vm(myVM);
+                randomx_release_cache(randomxCache);
+
+                printf("RandomX Hash: ");
+                for (unsigned i = 0; i < RANDOMX_HASH_SIZE; ++i) {
+                        printf("%02x", randomxHash[i] & 0xff);
+                }
+
+                printf("\n");
+                // TODO: use randomx hash to build a block
 
             }