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WIP to change rx key+input for groups of blocks; use full ac_name in rx key

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Duke Leto
2022-02-20 23:46:37 -05:00
parent c9aaf341ae
commit 8eab796800
1 changed files with 21 additions and 12 deletions
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33
src/miner.cpp
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@@ -1134,36 +1134,45 @@ void static RandomXMiner()
hashTarget = HASHTarget; hashTarget = HASHTarget;
char randomxHash[RANDOMX_HASH_SIZE]; char randomxHash[RANDOMX_HASH_SIZE];
// Initial randomx key is chain magic + first letter of chain name which is 2^40 bits of entropy // Initial randomx key is chain magic || ac_name which is >= 2^40 bits of entropy assuming strlen(ac_name) >= 1
char randomxKey[5]; // For ac_name=DRAGONX we have 4 + 7 = 11 bytes or 2^88 bits of entropy
char randomxKey[4 + strlen(SMART_CHAIN_SYMBOL)];
randomxKey[0] = ASSETCHAINS_MAGIC & 0xff; randomxKey[0] = ASSETCHAINS_MAGIC & 0xff;
randomxKey[1] = (ASSETCHAINS_MAGIC >> 8) & 0xff; randomxKey[1] = (ASSETCHAINS_MAGIC >> 8) & 0xff;
randomxKey[2] = (ASSETCHAINS_MAGIC >> 16) & 0xff; randomxKey[2] = (ASSETCHAINS_MAGIC >> 16) & 0xff;
randomxKey[3] = (ASSETCHAINS_MAGIC >> 24) & 0xff; randomxKey[3] = (ASSETCHAINS_MAGIC >> 24) & 0xff;
randomxKey[4] = SMART_CHAIN_SYMBOL[0];
for(int i=0; i++; i<strlen(SMART_CHAIN_SYMBOL) ) {
randomxKey[4+i] = SMART_CHAIN_SYMBOL[i];
}
crypto_generichash_blake2b_state state; crypto_generichash_blake2b_state state;
// Hash = blake2b( key || ac_name) // Hash = blake2b( key || ac_name)
crypto_generichash_blake2b_update(&state, (unsigned char*)&randomxKey[0], 5); crypto_generichash_blake2b_update(&state, (unsigned char*)&randomxKey[0], 4 + strlen(SMART_CHAIN_SYMBOL));
crypto_generichash_blake2b_update(&state, (unsigned char*)&SMART_CHAIN_SYMBOL[0], strlen(SMART_CHAIN_SYMBOL)); crypto_generichash_blake2b_update(&state, (unsigned char*)&SMART_CHAIN_SYMBOL[0], strlen(SMART_CHAIN_SYMBOL));
uchar randomxInput[32]; uchar randomxInput[32];
crypto_generichash_blake2b_final(&state, randomxInput, 32); crypto_generichash_blake2b_final(&state, randomxInput, 32);
randomx_flags flags = randomx_get_flags(); randomx_flags flags = randomx_get_flags();
randomx_cache *randomxCache = randomx_alloc_cache(flags); randomx_cache *randomxCache = randomx_alloc_cache(flags);
if(Mining_height > 1024 && (Mining_height % 1024 == 64)) {
// At block height 1024*N+64 we should use the blockhash of block 1024*N as key
// use blockchain data to set a new key+input for a group of blocks
// randomxKey = ...
// randomxInput = ...
}
if (randomxCache == NULL) { if (randomxCache == NULL) {
LogPrintf("RandomX cache is null, something is wrong, cannot mine!\n"); LogPrintf("RandomX cache is null, something is wrong, cannot mine!\n");
return; return;
} }
// TODO: use same block key for groups of blocks
if(Mining_height > 1024 && (Mining_height % 1024 == 64)) {
// At block height 1024*N+64 we should use the blockhash of block 1024*N as randomx key
// use blockchain data to set a new key+input for a group of blocks
uint256 randomxBlockKey;
randomxBlockKey = chainActive[Mining_height - 64]->GetBlockHash();
crypto_generichash_blake2b_state new_state;
crypto_generichash_blake2b_update(&state, (unsigned char*)&randomxBlockKey, 32);
crypto_generichash_blake2b_final(&state, randomxInput, 32);
}
// TODO: use correct variables
randomx_init_cache(randomxCache, &randomxKey, sizeof randomxKey); randomx_init_cache(randomxCache, &randomxKey, sizeof randomxKey);
randomx_vm *myVM = randomx_create_vm(flags, randomxCache, NULL); randomx_vm *myVM = randomx_create_vm(flags, randomxCache, NULL);