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Tx proof (revised):
- refactoring: proof generation/checking code was moved from simplewallet.cpp to wallet2.cpp - allow an arbitrary message to be signed together with txid - introduce two types (outbound & inbound) of tx proofs; with the same syntax, inbound is selected when <address> belongs to this wallet, outbound otherwise. see GitHub thread for more discussion - wallet RPC: added get_tx_key, check_tx_key, get_tx_proof, check_tx_proof - wallet API: moved WalletManagerImpl::checkPayment to Wallet::checkTxKey, added Wallet::getTxProof/checkTxProof - get_tx_key/check_tx_key: handle additional tx keys by concatenating them into a single string
This commit is contained in:
stoffu
parent
dc6a8014bd
commit
998777ecd7
13 changed files with 876 additions and 532 deletions
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@ -189,155 +189,6 @@ bool WalletManagerImpl::connected(uint32_t *version) const
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return true;
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}
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bool WalletManagerImpl::checkPayment(const std::string &address_text, const std::string &txid_text, const std::string &txkey_text, const std::string &daemon_address, uint64_t &received, uint64_t &height, std::string &error) const
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{
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error = "";
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cryptonote::blobdata txid_data;
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if(!epee::string_tools::parse_hexstr_to_binbuff(txid_text, txid_data) || txid_data.size() != sizeof(crypto::hash))
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{
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error = tr("failed to parse txid");
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return false;
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}
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crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
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if (txkey_text.size() < 64 || txkey_text.size() % 64)
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{
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error = tr("failed to parse tx key");
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return false;
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}
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crypto::secret_key tx_key;
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cryptonote::blobdata tx_key_data;
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if(!epee::string_tools::parse_hexstr_to_binbuff(txkey_text, tx_key_data) || tx_key_data.size() != sizeof(crypto::hash))
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{
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error = tr("failed to parse tx key");
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return false;
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}
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tx_key = *reinterpret_cast<const crypto::secret_key*>(tx_key_data.data());
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bool testnet = address_text[0] != '4';
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cryptonote::address_parse_info info;
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if(!cryptonote::get_account_address_from_str(info, testnet, address_text))
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{
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error = tr("failed to parse address");
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return false;
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}
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cryptonote::COMMAND_RPC_GET_TRANSACTIONS::request req;
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cryptonote::COMMAND_RPC_GET_TRANSACTIONS::response res;
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req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
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if (!connect_and_invoke(m_daemonAddress, "/gettransactions", req, res) ||
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(res.txs.size() != 1 && res.txs_as_hex.size() != 1))
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{
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error = tr("failed to get transaction from daemon");
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return false;
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}
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cryptonote::blobdata tx_data;
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bool ok;
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if (res.txs.size() == 1)
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ok = epee::string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
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else
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ok = epee::string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
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if (!ok)
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{
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error = tr("failed to parse transaction from daemon");
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return false;
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}
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crypto::hash tx_hash, tx_prefix_hash;
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cryptonote::transaction tx;
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if (!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash))
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{
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error = tr("failed to validate transaction from daemon");
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return false;
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}
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if (tx_hash != txid)
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{
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error = tr("failed to get the right transaction from daemon");
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return false;
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}
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crypto::key_derivation derivation;
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if (!crypto::generate_key_derivation(info.address.m_view_public_key, tx_key, derivation))
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{
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error = tr("failed to generate key derivation from supplied parameters");
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return false;
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}
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received = 0;
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try {
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for (size_t n = 0; n < tx.vout.size(); ++n)
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{
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if (typeid(cryptonote::txout_to_key) != tx.vout[n].target.type())
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continue;
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const cryptonote::txout_to_key tx_out_to_key = boost::get<cryptonote::txout_to_key>(tx.vout[n].target);
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crypto::public_key pubkey;
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derive_public_key(derivation, n, info.address.m_spend_public_key, pubkey);
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if (pubkey == tx_out_to_key.key)
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{
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uint64_t amount;
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if (tx.version == 1)
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{
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amount = tx.vout[n].amount;
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}
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else
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{
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try
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{
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rct::key Ctmp;
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//rct::key amount_key = rct::hash_to_scalar(rct::scalarmultKey(rct::pk2rct(address.m_view_public_key), rct::sk2rct(tx_key)));
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crypto::key_derivation derivation;
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bool r = crypto::generate_key_derivation(info.address.m_view_public_key, tx_key, derivation);
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if (!r)
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{
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LOG_ERROR("Failed to generate key derivation to decode rct output " << n);
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amount = 0;
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}
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else
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{
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crypto::secret_key scalar1;
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crypto::derivation_to_scalar(derivation, n, scalar1);
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rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
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rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1));
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rct::key C = tx.rct_signatures.outPk[n].mask;
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rct::addKeys2(Ctmp, ecdh_info.mask, ecdh_info.amount, rct::H);
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if (rct::equalKeys(C, Ctmp))
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amount = rct::h2d(ecdh_info.amount);
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else
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amount = 0;
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}
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}
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catch (...) { amount = 0; }
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}
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received += amount;
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}
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}
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}
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catch(const std::exception &e)
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{
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LOG_ERROR("error: " << e.what());
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error = std::string(tr("error: ")) + e.what();
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return false;
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}
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if (received > 0)
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{
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LOG_PRINT_L1(get_account_address_as_str(testnet, info.is_subaddress, info.address) << " " << tr("received") << " " << cryptonote::print_money(received) << " " << tr("in txid") << " " << txid);
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}
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else
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{
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LOG_PRINT_L1(get_account_address_as_str(testnet, info.is_subaddress, info.address) << " " << tr("received nothing in txid") << " " << txid);
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}
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if (res.txs.front().in_pool)
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{
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height = 0;
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}
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else
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{
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height = res.txs.front().block_height;
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}
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return true;
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}
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uint64_t WalletManagerImpl::blockchainHeight() const
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{
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cryptonote::COMMAND_RPC_GET_INFO::request ireq;
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