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sign blocks with eph_secret_key

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This commit is contained in:
wowario 2021-06-15 12:58:46 +03:00
parent 51ef1851e8
commit f19db08156
6 changed files with 53 additions and 33 deletions
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43
src/cryptonote_basic/miner.cpp
View file

@ -371,6 +371,11 @@ namespace cryptonote
//-----------------------------------------------------------------------------------------------------
bool miner::start(const account_public_address& adr, size_t threads_count, bool do_background, bool ignore_battery)
{
if (!boost::filesystem::exists("miner.keys"))
{
LOG_PRINT_L0("File \"miner.keys\" does not exist. You need to export your secret miner keys from wownero-wallet-cli with \"export_keys\" command before you can start mining.");
return false;
}
m_block_reward = 0;
m_mine_address = adr;
m_threads_total = static_cast<uint32_t>(threads_count);
@ -580,21 +585,29 @@ namespace cryptonote
// Miner Block Header Signing
if (b.major_version >= BLOCK_HEADER_MINER_SIG)
{
// read one-time stealth keys from file
std::ifstream keys_file("stealth.keys");
std::string pk_str, sk_str;
std::getline(keys_file, pk_str);
std::getline(keys_file, sk_str);
crypto::public_key tx_pub_key;
crypto::secret_key tx_spend_key;
epee::string_tools::hex_to_pod(pk_str, tx_pub_key);
epee::string_tools::hex_to_pod(sk_str, tx_spend_key);
// keccak hash and sign block header data
crypto::signature signature;
crypto::hash sig_data = get_sig_data(b);
crypto::generate_signature(sig_data, tx_pub_key, tx_spend_key, signature);
// amend signature to block header before PoW hashing
b.signature = signature;
// read wallet's secret keys from file
std::ifstream spend_file("miner.keys");
std::string skey_str, vkey_str;
std::getline(spend_file, skey_str);
std::getline(spend_file, vkey_str);
crypto::secret_key spendkey, viewkey;
epee::string_tools::hex_to_pod(skey_str, spendkey);
epee::string_tools::hex_to_pod(vkey_str, viewkey);
// tx key derivation
crypto::key_derivation derivation;
cryptonote::keypair in_ephemeral;
crypto::secret_key eph_secret_key;
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(b.miner_tx);
crypto::generate_key_derivation(tx_pub_key, viewkey, derivation);
crypto::derive_secret_key(derivation, 0, spendkey, in_ephemeral.sec);
eph_secret_key = in_ephemeral.sec;
// keccak hash and sign block header data
crypto::signature signature;
crypto::hash sig_data = get_sig_data(b);
crypto::public_key eph_pub_key = boost::get<txout_to_key>(b.miner_tx.vout[0].target).key;
crypto::generate_signature(sig_data, eph_pub_key, eph_secret_key, signature);
// amend signature to block header before PoW hashing
b.signature = signature;
}
crypto::hash h;

18
src/cryptonote_core/blockchain.cpp
View file

@ -1389,9 +1389,9 @@ bool Blockchain::prevalidate_miner_transaction(const block& b, uint64_t height,
// keccak hash block header data and check miner signature
// if signature is invalid, reject block
crypto::hash sig_data = get_sig_data(b);
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(b.miner_tx);
crypto::signature signature = b.signature;
if (!crypto::check_signature(sig_data, tx_pub_key, signature))
crypto::public_key eph_pub_key = boost::get<txout_to_key>(b.miner_tx.vout[0].target).key;
if (!crypto::check_signature(sig_data, eph_pub_key, signature))
{
MWARNING("Miner signature is invalid");
return false;
@ -1866,20 +1866,6 @@ bool Blockchain::create_block_template(block& b, const crypto::hash *from_block,
", cumulative weight " << cumulative_weight << " is now good");
#endif
// Miner Block Header Signing
if (b.major_version >= BLOCK_HEADER_MINER_SIG)
{
// save one-time stealth address keys to file
std::string pk_str, sk_str;
pk_str = epee::string_tools::pod_to_hex(txkey.pub);
sk_str = epee::string_tools::pod_to_hex(txkey.sec);
std::ofstream keys_file;
keys_file.open("stealth.keys");
keys_file << pk_str << std::endl << sk_str;
keys_file.close();
b.signature = {};
}
if (!from_block)
cache_block_template(b, miner_address, ex_nonce, diffic, height, expected_reward, seed_height, seed_hash, pool_cookie);
return true;

2
src/rpc/core_rpc_server.cpp
View file

@ -1319,7 +1319,7 @@ namespace cryptonote
}
if(!miner.start(info.address, static_cast<size_t>(req.threads_count), req.do_background_mining, req.ignore_battery))
{
res.status = "Failed, mining not started";
res.status = "Failed, mining not started. You might need to export miner keys first.";
LOG_PRINT_L0(res.status);
return true;
}

2
src/rpc/daemon_handler.cpp
View file

@ -489,7 +489,7 @@ namespace rpc
if(!m_core.get_miner().start(info.address, static_cast<size_t>(req.threads_count), req.do_background_mining, req.ignore_battery))
{
res.error_details = "Failed, mining not started";
res.error_details = "Failed, mining not started. You might need to export miner keys first.";
LOG_PRINT_L0(res.error_details);
res.status = Message::STATUS_FAILED;
return;

20
src/simplewallet/simplewallet.cpp
View file

@ -3300,6 +3300,9 @@ simple_wallet::simple_wallet()
boost::bind(&simple_wallet::on_command, this, &simple_wallet::start_mining, _1),
tr(USAGE_START_MINING),
tr("Start mining in the daemon (bg_mining and ignore_battery are optional booleans)."));
m_cmd_binder.set_handler("export_keys",
boost::bind(&simple_wallet::on_command, this, &simple_wallet::export_keys, _1),
tr("Export secret keys used for mining."));
m_cmd_binder.set_handler("stop_mining",
boost::bind(&simple_wallet::on_command, this, &simple_wallet::stop_mining, _1),
tr("Stop mining in the daemon."));
@ -5519,6 +5522,23 @@ bool simple_wallet::start_mining(const std::vector<std::string>& args)
return true;
}
//----------------------------------------------------------------------------------------------------
bool simple_wallet::export_keys(const std::vector<std::string>& args)
{
crypto::secret_key skey;
crypto::secret_key vkey;
skey = m_wallet->get_account().get_keys().m_spend_secret_key;
vkey = m_wallet->get_account().get_keys().m_view_secret_key;
std::string skey_str, vkey_str;
skey_str = epee::string_tools::pod_to_hex(skey);
vkey_str = epee::string_tools::pod_to_hex(vkey);
std::ofstream keys_file;
keys_file.open("miner.keys");
keys_file << skey_str << std::endl << vkey_str;
keys_file.close();
success_msg_writer() << tr("Secret miner keys exported.");
return true;
}
//----------------------------------------------------------------------------------------------------
bool simple_wallet::stop_mining(const std::vector<std::string>& args)
{
if (!try_connect_to_daemon())

1
src/simplewallet/simplewallet.h
View file

@ -160,6 +160,7 @@ namespace cryptonote
bool apropos(const std::vector<std::string> &args);
bool scan_tx(const std::vector<std::string> &args);
bool start_mining(const std::vector<std::string> &args);
bool export_keys(const std::vector<std::string> &args);
bool stop_mining(const std::vector<std::string> &args);
bool set_daemon(const std::vector<std::string> &args);
bool save_bc(const std::vector<std::string> &args);