bool COeruShield::IsMasterKey(CBitcoinAddress addr) const
{
std::string strAddr = addr.ToString();
std::vector<unsigned char> hash;
hash.resize(CSHA256::OUTPUT_SIZE);
CSHA256().Write((unsigned char*) &strAddr[0], strAddr.size())
.Finalize(&hash[0]);
return IsMasterKey(hash);
}
bool CNetAddr::SetInternal(const std::string &name)
{
if (name.empty()) {
return false;
}
unsigned char hash[32] = {};
CSHA256().Write((const unsigned char*)name.data(), name.size()).Finalize(hash);
memcpy(ip, g_internal_prefix, sizeof(g_internal_prefix));
memcpy(ip + sizeof(g_internal_prefix), hash, sizeof(ip) - sizeof(g_internal_prefix));
return true;
}
CScript GetScriptForWitness(const CScript& redeemscript)
{
CScript ret;
txnouttype typ;
std::vector<std::vector<unsigned char> > vSolutions;
if (Solver(redeemscript, typ, vSolutions)) {
if (typ == TX_PUBKEY) {
return GetScriptForDestination(WitnessV0KeyHash(Hash160(vSolutions[0].begin(), vSolutions[0].end())));
} else if (typ == TX_PUBKEYHASH) {
return GetScriptForDestination(WitnessV0KeyHash(vSolutions[0]));
}
}
uint256 hash;
CSHA256().Write(&redeemscript[0], redeemscript.size()).Finalize(hash.begin());
return GetScriptForDestination(WitnessV0ScriptHash(hash));
}
CHMAC_SHA256::CHMAC_SHA256(const uint8_t *key, size_t keylen) {
uint8_t rkey[64];
if (keylen <= 64) {
memcpy(rkey, key, keylen);
memset(rkey + keylen, 0, 64 - keylen);
} else {
CSHA256().Write(key, keylen).Finalize(rkey);
memset(rkey + 32, 0, 32);
}
for (int n = 0; n < 64; n++)
rkey[n] ^= 0x5c;
outer.Write(rkey, 64);
for (int n = 0; n < 64; n++)
rkey[n] ^= 0x5c ^ 0x36;
inner.Write(rkey, 64);
}
CScript GetScriptForWitness(const CScript& redeemscript)
{
CScript ret;
txnouttype typ;
std::vector<std::vector<unsigned char> > vSolutions;
if (Solver(redeemscript, typ, vSolutions)) {
if (typ == TX_PUBKEY) {
unsigned char h160[20];
CHash160().Write(&vSolutions[0][0], vSolutions[0].size()).Finalize(h160);
ret << OP_0 << std::vector<unsigned char>(&h160[0], &h160[20]);
return ret;
} else if (typ == TX_PUBKEYHASH) {
ret << OP_0 << vSolutions[0];
return ret;
}
}
uint256 hash;
CSHA256().Write(&redeemscript[0], redeemscript.size()).Finalize(hash.begin());
ret << OP_0 << ToByteVector(hash);
return ret;
}
void TestSHA256(const std::string &in, const std::string &hexout) { TestVector(CSHA256(), in, ParseHex(hexout));}
bool CMnemonic::Check(SecureString mnemonic)
{
if (mnemonic.empty()) {
return false;
}
uint32_t nWordCount{};
for (size_t i = 0; i < mnemonic.size(); ++i) {
if (mnemonic[i] == ' ') {
nWordCount++;
}
}
nWordCount++;
// check number of words
if (nWordCount != 12 && nWordCount != 18 && nWordCount != 24) {
return false;
}
SecureString ssCurrentWord;
SecureVector bits(32 + 1);
uint32_t nWordIndex, ki, nBitsCount{};
for (size_t i = 0; i < mnemonic.size(); ++i)
{
ssCurrentWord = "";
while (i + ssCurrentWord.size() < mnemonic.size() && mnemonic[i + ssCurrentWord.size()] != ' ') {
if (ssCurrentWord.size() >= 9) {
return false;
}
ssCurrentWord += mnemonic[i + ssCurrentWord.size()];
}
i += ssCurrentWord.size();
nWordIndex = 0;
for (;;) {
if (!wordlist[nWordIndex]) { // word not found
return false;
}
if (ssCurrentWord == wordlist[nWordIndex]) { // word found on index nWordIndex
for (ki = 0; ki < 11; ki++) {
if (nWordIndex & (1 << (10 - ki))) {
bits[nBitsCount / 8] |= 1 << (7 - (nBitsCount % 8));
}
nBitsCount++;
}
break;
}
nWordIndex++;
}
}
if (nBitsCount != nWordCount * 11) {
return false;
}
bits[32] = bits[nWordCount * 4 / 3];
CSHA256().Write(&bits[0], nWordCount * 4 / 3).Finalize(&bits[0]);
bool fResult = 0;
if (nWordCount == 12) {
fResult = (bits[0] & 0xF0) == (bits[32] & 0xF0); // compare first 4 bits
} else
if (nWordCount == 18) {
fResult = (bits[0] & 0xFC) == (bits[32] & 0xFC); // compare first 6 bits
} else
if (nWordCount == 24) {
fResult = bits[0] == bits[32]; // compare 8 bits
}
return fResult;
}
WitnessV0ScriptHash::WitnessV0ScriptHash(const CScript& in)
{
CSHA256().Write(in.data(), in.size()).Finalize(begin());
}
static void AssembleBlock(benchmark::State& state)
{
const std::vector<unsigned char> op_true{OP_TRUE};
CScriptWitness witness;
witness.stack.push_back(op_true);
uint256 witness_program;
CSHA256().Write(&op_true[0], op_true.size()).Finalize(witness_program.begin());
const CScript SCRIPT_PUB{CScript(OP_0) << std::vector<unsigned char>{witness_program.begin(), witness_program.end()}};
// Switch to regtest so we can mine faster
// Also segwit is active, so we can include witness transactions
SelectParams(CBaseChainParams::REGTEST);
InitScriptExecutionCache();
boost::thread_group thread_group;
CScheduler scheduler;
{
::pblocktree.reset(new CBlockTreeDB(1 << 20, true));
::pcoinsdbview.reset(new CCoinsViewDB(1 << 23, true));
::pcoinsTip.reset(new CCoinsViewCache(pcoinsdbview.get()));
const CChainParams& chainparams = Params();
thread_group.create_thread(boost::bind(&CScheduler::serviceQueue, &scheduler));
GetMainSignals().RegisterBackgroundSignalScheduler(scheduler);
LoadGenesisBlock(chainparams);
CValidationState state;
ActivateBestChain(state, chainparams);
assert(::chainActive.Tip() != nullptr);
const bool witness_enabled{IsWitnessEnabled(::chainActive.Tip(), chainparams.GetConsensus())};
assert(witness_enabled);
}
// Collect some loose transactions that spend the coinbases of our mined blocks
constexpr size_t NUM_BLOCKS{200};
std::array<CTransactionRef, NUM_BLOCKS - COINBASE_MATURITY + 1> txs;
for (size_t b{0}; b < NUM_BLOCKS; ++b) {
CMutableTransaction tx;
tx.vin.push_back(MineBlock(SCRIPT_PUB));
tx.vin.back().scriptWitness = witness;
tx.vout.emplace_back(1337, SCRIPT_PUB);
if (NUM_BLOCKS - b >= COINBASE_MATURITY)
txs.at(b) = MakeTransactionRef(tx);
}
{
LOCK(::cs_main); // Required for ::AcceptToMemoryPool.
for (const auto& txr : txs) {
CValidationState state;
bool ret{::AcceptToMemoryPool(::mempool, state, txr, nullptr /* pfMissingInputs */, nullptr /* plTxnReplaced */, false /* bypass_limits */, /* nAbsurdFee */ 0)};
assert(ret);
}
}
while (state.KeepRunning()) {
PrepareBlock(SCRIPT_PUB);
}
thread_group.interrupt_all();
thread_group.join_all();
GetMainSignals().FlushBackgroundCallbacks();
GetMainSignals().UnregisterBackgroundSignalScheduler();
}
