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Tx proof (revised):

Browse source 
- 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 2017-09-12 10:05:41 +09:00
parent dc6a8014bd
commit 998777ecd7
No known key found for this signature in database
GPG key ID: 41DAB8343A9EC012
13 changed files with 876 additions and 532 deletions
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466
src/simplewallet/simplewallet.cpp
View file

@ -929,7 +929,7 @@ simple_wallet::simple_wallet()
m_cmd_binder.set_handler("rescan_spent", boost::bind(&simple_wallet::rescan_spent, this, _1), tr("Rescan blockchain for spent outputs"));
m_cmd_binder.set_handler("get_tx_key", boost::bind(&simple_wallet::get_tx_key, this, _1), tr("Get transaction key (r) for a given <txid>"));
m_cmd_binder.set_handler("check_tx_key", boost::bind(&simple_wallet::check_tx_key, this, _1), tr("Check amount going to <address> in <txid>"));
m_cmd_binder.set_handler("get_tx_proof", boost::bind(&simple_wallet::get_tx_proof, this, _1), tr("Generate a signature to prove payment to <address> in <txid> using the transaction secret key (r) without revealing it"));
m_cmd_binder.set_handler("get_tx_proof", boost::bind(&simple_wallet::get_tx_proof, this, _1), tr("Generate a signature proving payment/receipt of money to/by <address> in <txid> using the transaction/view secret key"));
m_cmd_binder.set_handler("check_tx_proof", boost::bind(&simple_wallet::check_tx_proof, this, _1), tr("Check tx proof for payment going to <address> in <txid>"));
m_cmd_binder.set_handler("show_transfers", boost::bind(&simple_wallet::show_transfers, this, _1), tr("show_transfers [in|out|pending|failed|pool] [index=<N1>[,<N2>,...]] [<min_height> [<max_height>]] - Show incoming/outgoing transfers within an optional height range"));
m_cmd_binder.set_handler("unspent_outputs", boost::bind(&simple_wallet::unspent_outputs, this, _1), tr("unspent_outputs [index=<N1>[,<N2>,...]] [<min_amount> [<max_amount>]] - Show unspent outputs of a specified address within an optional amount range"));
@ -3911,22 +3911,24 @@ bool simple_wallet::get_tx_key(const std::vector<std::string> &args_)
}
if (m_wallet->ask_password() && !get_and_verify_password()) { return true; }
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(local_args.front(), txid_data) || txid_data.size() != sizeof(crypto::hash))
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(local_args[0], txid))
{
fail_msg_writer() << tr("failed to parse txid");
return true;
}
crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
LOCK_IDLE_SCOPE();
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
std::vector<crypto::secret_key> amount_keys;
if (m_wallet->get_tx_key(txid, tx_key, additional_tx_keys))
{
success_msg_writer() << tr("Tx key: ") << epee::string_tools::pod_to_hex(tx_key);
ostringstream oss;
oss << epee::string_tools::pod_to_hex(tx_key);
for (size_t i = 0; i < additional_tx_keys.size(); ++i)
oss << epee::string_tools::pod_to_hex(additional_tx_keys[i]);
success_msg_writer() << tr("Tx key: ") << oss.str();
return true;
}
else
@ -3938,19 +3940,18 @@ bool simple_wallet::get_tx_key(const std::vector<std::string> &args_)
//----------------------------------------------------------------------------------------------------
bool simple_wallet::get_tx_proof(const std::vector<std::string> &args)
{
if(args.size() != 2) {
fail_msg_writer() << tr("usage: get_tx_proof <txid> <dest_address>");
if (args.size() != 2 && args.size() != 3)
{
fail_msg_writer() << tr("usage: get_tx_proof_out <txid> <address> [<message>]");
return true;
}
if (m_wallet->ask_password() && !get_and_verify_password()) { return true; }
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(args[0], txid_data) || txid_data.size() != sizeof(crypto::hash))
crypto::hash txid;
if(!epee::string_tools::hex_to_pod(args[0], txid))
{
fail_msg_writer() << tr("failed to parse txid");
return true;
}
crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
cryptonote::address_parse_info info;
if(!cryptonote::get_account_address_from_str_or_url(info, m_wallet->testnet(), args[1], oa_prompter))
@ -3959,140 +3960,29 @@ bool simple_wallet::get_tx_proof(const std::vector<std::string> &args)
return true;
}
LOCK_IDLE_SCOPE();
if (m_wallet->ask_password() && !get_and_verify_password()) { return true; }
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
if (!m_wallet->get_tx_key(txid, tx_key, additional_tx_keys))
{
fail_msg_writer() << tr("Tx secret key wasn't found in the wallet file.");
return true;
}
// fetch tx prefix either from the daemon or from the wallet cache if it's still pending
cryptonote::transaction_prefix tx;
// first, look up the wallet cache
std::list<std::pair<crypto::hash, tools::wallet2::unconfirmed_transfer_details>> unconfirmed_payments_out;
m_wallet->get_unconfirmed_payments_out(unconfirmed_payments_out, m_current_subaddress_account);
auto found = std::find_if(unconfirmed_payments_out.begin(), unconfirmed_payments_out.end(), [&](const std::pair<crypto::hash, tools::wallet2::unconfirmed_transfer_details>& p)
{
return p.first == txid;
});
// if not found, query the daemon
if (found == unconfirmed_payments_out.end())
{
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
if (!net_utils::invoke_http_json("/gettransactions", req, res, m_http_client) ||
(res.txs.size() != 1 && res.txs_as_hex.size() != 1))
{
fail_msg_writer() << tr("failed to get transaction from daemon");
return true;
}
cryptonote::blobdata tx_data;
bool ok;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
if (!ok)
{
fail_msg_writer() << tr("failed to parse transaction from daemon");
return true;
}
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx_full;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx_full, tx_hash, tx_prefix_hash))
{
fail_msg_writer() << tr("failed to validate transaction from daemon");
return true;
}
if (tx_hash != txid)
{
fail_msg_writer() << tr("failed to get the right transaction from daemon");
return true;
}
tx = tx_full;
}
else
{
tx = found->second.m_tx;
}
// fetch tx pubkey
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(tx);
if (tx_pub_key == crypto::null_pkey)
{
fail_msg_writer() << tr("Tx pubkey was not found");
return true;
}
const std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(tx);
if (additional_tx_keys.size() != additional_tx_pub_keys.size())
{
fail_msg_writer() << tr("The set of additional tx secret/public keys doesn't match");
return true;
}
// find the correct R:
// R = r*G for standard addresses
// R = r*B for subaddresses (where B is the recipient's spend pubkey)
crypto::public_key R;
crypto::secret_key r;
if (info.is_subaddress)
{
auto i = additional_tx_keys.begin();
auto j = additional_tx_pub_keys.begin();
for (; ; ++i, ++j) {
if (i == additional_tx_keys.end())
{
r = tx_key;
R = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(info.address.m_spend_public_key), rct::sk2rct(r)));
if (R == tx_pub_key)
break;
fail_msg_writer() << tr("The matching tx secret/pubkey pair wasn't found for this subaddress");
return true;
}
else
{
r = *i;
R = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(info.address.m_spend_public_key), rct::sk2rct(r)));
if (R == *j)
break;
}
}
}
else
{
r = tx_key;
crypto::secret_key_to_public_key(r, R);
if (R != tx_pub_key)
{
fail_msg_writer() << tr("The destinations of this tx don't include a standard address");
return true;
}
}
crypto::public_key rA = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(info.address.m_view_public_key), rct::sk2rct(r)));
crypto::signature sig;
try
{
if (info.is_subaddress)
crypto::generate_tx_proof(txid, R, info.address.m_view_public_key, info.address.m_spend_public_key, rA, r, sig);
std::string error_str;
std::string sig_str = m_wallet->get_tx_proof(txid, info.address, info.is_subaddress, args.size() == 3 ? args[2] : "", error_str);
if (sig_str.empty())
{
fail_msg_writer() << error_str;
}
else
crypto::generate_tx_proof(txid, R, info.address.m_view_public_key, boost::none, rA, r, sig);
{
const std::string filename = "monero_tx_proof";
if (epee::file_io_utils::save_string_to_file(filename, sig_str))
success_msg_writer() << tr("signature file saved to:") << filename;
else
fail_msg_writer() << tr("failed to save signature file");
}
}
catch (const std::runtime_error &e)
catch (const std::exception &e)
{
fail_msg_writer() << e.what();
return true;
fail_msg_writer() << tr("error: ") << e.what();
}
std::string sig_str = std::string("ProofV1") +
tools::base58::encode(std::string((const char *)&rA, sizeof(crypto::public_key))) +
tools::base58::encode(std::string((const char *)&sig, sizeof(crypto::signature)));
success_msg_writer() << tr("Signature: ") << sig_str;
return true;
}
//----------------------------------------------------------------------------------------------------
@ -4113,27 +4003,31 @@ bool simple_wallet::check_tx_key(const std::vector<std::string> &args_)
fail_msg_writer() << tr("wallet is null");
return true;
}
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(local_args[0], txid_data) || txid_data.size() != sizeof(crypto::hash))
crypto::hash txid;
if(!epee::string_tools::hex_to_pod(local_args[0], txid))
{
fail_msg_writer() << tr("failed to parse txid");
return true;
}
crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
if (local_args[1].size() < 64 || local_args[1].size() % 64)
{
fail_msg_writer() << tr("failed to parse tx key");
return true;
}
crypto::secret_key tx_key;
cryptonote::blobdata tx_key_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(local_args[1], tx_key_data) || tx_key_data.size() != sizeof(crypto::secret_key))
std::vector<crypto::secret_key> additional_tx_keys;
if(!epee::string_tools::hex_to_pod(local_args[1].substr(0, 64), tx_key))
{
fail_msg_writer() << tr("failed to parse tx key");
return true;
}
tx_key = *reinterpret_cast<const crypto::secret_key*>(tx_key_data.data());
local_args[1] = local_args[1].substr(64);
while (!local_args[1].empty())
{
additional_tx_keys.resize(additional_tx_keys.size() + 1);
if(!epee::string_tools::hex_to_pod(local_args[1].substr(0, 64), additional_tx_keys.back()))
{
fail_msg_writer() << tr("failed to parse tx key");
return true;
}
local_args[1] = local_args[1].substr(64);
}
cryptonote::address_parse_info info;
if(!cryptonote::get_account_address_from_str_or_url(info, m_wallet->testnet(), local_args[2], oa_prompter))
@ -4142,134 +4036,48 @@ bool simple_wallet::check_tx_key(const std::vector<std::string> &args_)
return true;
}
crypto::key_derivation derivation;
if (!crypto::generate_key_derivation(info.address.m_view_public_key, tx_key, derivation))
try
{
fail_msg_writer() << tr("failed to generate key derivation from supplied parameters");
return true;
}
uint64_t received;
bool in_pool;
uint64_t confirmations;
m_wallet->check_tx_key(txid, tx_key, additional_tx_keys, info.address, received, in_pool, confirmations);
return check_tx_key_helper(txid, info.address, info.is_subaddress, derivation);
}
//----------------------------------------------------------------------------------------------------
bool simple_wallet::check_tx_key_helper(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const crypto::key_derivation &derivation)
{
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
if (!net_utils::invoke_http_json("/gettransactions", req, res, m_http_client) ||
(res.txs.size() != 1 && res.txs_as_hex.size() != 1))
{
fail_msg_writer() << tr("failed to get transaction from daemon");
return true;
}
cryptonote::blobdata tx_data;
bool ok;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
if (!ok)
{
fail_msg_writer() << tr("failed to parse transaction from daemon");
return true;
}
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash))
{
fail_msg_writer() << tr("failed to validate transaction from daemon");
return true;
}
if (tx_hash != txid)
{
fail_msg_writer() << tr("failed to get the right transaction from daemon");
return true;
}
uint64_t received = 0;
try {
for (size_t n = 0; n < tx.vout.size(); ++n)
if (received > 0)
{
if (typeid(txout_to_key) != tx.vout[n].target.type())
continue;
const txout_to_key tx_out_to_key = boost::get<txout_to_key>(tx.vout[n].target);
crypto::public_key pubkey;
derive_public_key(derivation, n, address.m_spend_public_key, pubkey);
if (pubkey == tx_out_to_key.key)
success_msg_writer() << get_account_address_as_str(m_wallet->testnet(), info.is_subaddress, info.address) << " " << tr("received") << " " << print_money(received) << " " << tr("in txid") << " " << txid;
if (in_pool)
{
uint64_t amount;
if (tx.version == 1)
success_msg_writer() << tr("WARNING: this transaction is not yet included in the blockchain!");
}
else
{
if (confirmations != (uint64_t)-1)
{
amount = tx.vout[n].amount;
success_msg_writer() << boost::format(tr("This transaction has %u confirmations")) % confirmations;
}
else
{
try
{
rct::key Ctmp;
//rct::key amount_key = rct::hash_to_scalar(rct::scalarmultKey(rct::pk2rct(address.m_view_public_key), rct::sk2rct(tx_key)));
{
crypto::secret_key scalar1;
crypto::derivation_to_scalar(derivation, n, scalar1);
rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1));
rct::key C = tx.rct_signatures.outPk[n].mask;
rct::addKeys2(Ctmp, ecdh_info.mask, ecdh_info.amount, rct::H);
if (rct::equalKeys(C, Ctmp))
amount = rct::h2d(ecdh_info.amount);
else
amount = 0;
}
}
catch (...) { amount = 0; }
success_msg_writer() << tr("WARNING: failed to determine number of confirmations!");
}
received += amount;
}
}
}
catch(const std::exception &e)
{
LOG_ERROR("error: " << e.what());
fail_msg_writer() << tr("error: ") << e.what();
return true;
}
std::string address_str = get_account_address_as_str(m_wallet->testnet(), is_subaddress, address);
if (received > 0)
{
success_msg_writer() << address_str << " " << tr("received") << " " << print_money(received) << " " << tr("in txid") << " " << txid;
}
else
{
fail_msg_writer() << address_str << " " << tr("received nothing in txid") << " " << txid;
}
if (res.txs.front().in_pool)
{
success_msg_writer() << tr("WARNING: this transaction is not yet included in the blockchain!");
}
else
{
std::string err;
uint64_t bc_height = get_daemon_blockchain_height(err);
if (err.empty())
{
uint64_t confirmations = bc_height - (res.txs.front().block_height + 1);
success_msg_writer() << boost::format(tr("This transaction has %u confirmations")) % confirmations;
}
else
{
success_msg_writer() << tr("WARNING: failed to determine number of confirmations!");
fail_msg_writer() << get_account_address_as_str(m_wallet->testnet(), info.is_subaddress, info.address) << " " << tr("received nothing in txid") << " " << txid;
}
}
catch (const std::exception &e)
{
fail_msg_writer() << tr("error: ") << e.what();
}
return true;
}
//----------------------------------------------------------------------------------------------------
bool simple_wallet::check_tx_proof(const std::vector<std::string> &args)
{
if(args.size() != 3) {
fail_msg_writer() << tr("usage: check_tx_proof <txid> <address> <signature>");
if(args.size() != 3 && args.size() != 4) {
fail_msg_writer() << tr("usage: check_tx_proof <txid> <address> <signature_file> [<message>]");
return true;
}
@ -4277,13 +4085,12 @@ bool simple_wallet::check_tx_proof(const std::vector<std::string> &args)
return true;
// parse txid
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(args[0], txid_data) || txid_data.size() != sizeof(crypto::hash))
crypto::hash txid;
if(!epee::string_tools::hex_to_pod(args[0], txid))
{
fail_msg_writer() << tr("failed to parse txid");
return true;
}
crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
// parse address
cryptonote::address_parse_info info;
@ -4293,117 +4100,56 @@ bool simple_wallet::check_tx_proof(const std::vector<std::string> &args)
return true;
}
// parse pubkey r*A & signature
std::string sig_str = args[2];
const size_t header_len = strlen("ProofV1");
if (sig_str.size() < header_len || sig_str.substr(0, header_len) != "ProofV1")
// read signature file
std::string sig_str;
if (!epee::file_io_utils::load_file_to_string(args[2], sig_str))
{
fail_msg_writer() << tr("Signature header check error");
fail_msg_writer() << tr("failed to load signature file");
return true;
}
crypto::public_key rA;
crypto::signature sig;
const size_t rA_len = tools::base58::encode(std::string((const char *)&rA, sizeof(crypto::public_key))).size();
const size_t sig_len = tools::base58::encode(std::string((const char *)&sig, sizeof(crypto::signature))).size();
std::string rA_decoded;
std::string sig_decoded;
if (!tools::base58::decode(sig_str.substr(header_len, rA_len), rA_decoded))
{
fail_msg_writer() << tr("Signature decoding error");
return true;
}
if (!tools::base58::decode(sig_str.substr(header_len + rA_len, sig_len), sig_decoded))
{
fail_msg_writer() << tr("Signature decoding error");
return true;
}
if (sizeof(crypto::public_key) != rA_decoded.size() || sizeof(crypto::signature) != sig_decoded.size())
{
fail_msg_writer() << tr("Signature decoding error");
return true;
}
memcpy(&rA, rA_decoded.data(), sizeof(crypto::public_key));
memcpy(&sig, sig_decoded.data(), sizeof(crypto::signature));
// fetch tx pubkey from the daemon
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
if (!net_utils::invoke_http_json("/gettransactions", req, res, m_http_client) ||
(res.txs.size() != 1 && res.txs_as_hex.size() != 1))
try
{
fail_msg_writer() << tr("failed to get transaction from daemon");
return true;
}
cryptonote::blobdata tx_data;
bool ok;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
if (!ok)
{
fail_msg_writer() << tr("failed to parse transaction from daemon");
return true;
}
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash))
{
fail_msg_writer() << tr("failed to validate transaction from daemon");
return true;
}
if (tx_hash != txid)
{
fail_msg_writer() << tr("failed to get the right transaction from daemon");
return true;
}
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(tx);
if (tx_pub_key == crypto::null_pkey)
{
fail_msg_writer() << tr("Tx pubkey was not found");
return true;
}
const std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(tx);
// check signature
bool good_signature = false;
if (info.is_subaddress)
{
good_signature = crypto::check_tx_proof(txid, tx_pub_key, info.address.m_view_public_key, info.address.m_spend_public_key, rA, sig);
if (!good_signature)
uint64_t received;
bool in_pool;
uint64_t confirmations;
if (m_wallet->check_tx_proof(txid, info.address, info.is_subaddress, args.size() == 4 ? args[3] : "", sig_str, received, in_pool, confirmations))
{
for (size_t i = 0; i < additional_tx_pub_keys.size(); ++i)
success_msg_writer() << tr("Good signature");
if (received > 0)
{
good_signature = crypto::check_tx_proof(txid, additional_tx_pub_keys[i], info.address.m_view_public_key, info.address.m_spend_public_key, rA, sig);
if (good_signature)
break;
success_msg_writer() << get_account_address_as_str(m_wallet->testnet(), info.is_subaddress, info.address) << " " << tr("received") << " " << print_money(received) << " " << tr("in txid") << " " << txid;
if (in_pool)
{
success_msg_writer() << tr("WARNING: this transaction is not yet included in the blockchain!");
}
else
{
if (confirmations != (uint64_t)-1)
{
success_msg_writer() << boost::format(tr("This transaction has %u confirmations")) % confirmations;
}
else
{
success_msg_writer() << tr("WARNING: failed to determine number of confirmations!");
}
}
}
else
{
fail_msg_writer() << get_account_address_as_str(m_wallet->testnet(), info.is_subaddress, info.address) << " " << tr("received nothing in txid") << " " << txid;
}
}
else
{
fail_msg_writer() << tr("Bad signature");
}
}
else
catch (const std::exception &e)
{
good_signature = crypto::check_tx_proof(txid, tx_pub_key, info.address.m_view_public_key, boost::none, rA, sig);
fail_msg_writer() << tr("error: ") << e.what();
}
if (good_signature)
{
success_msg_writer() << tr("Good signature");
}
else
{
fail_msg_writer() << tr("Bad signature");
return true;
}
// obtain key derivation by multiplying scalar 1 to the pubkey r*A included in the signature
crypto::key_derivation derivation;
if (!crypto::generate_key_derivation(rA, rct::rct2sk(rct::I), derivation))
{
fail_msg_writer() << tr("failed to generate key derivation");
return true;
}
return check_tx_key_helper(txid, info.address, info.is_subaddress, derivation);
return true;
}
//----------------------------------------------------------------------------------------------------
static std::string get_human_readable_timestamp(uint64_t ts)

1
src/simplewallet/simplewallet.h
View file

@ -161,7 +161,6 @@ namespace cryptonote
bool set_log(const std::vector<std::string> &args);
bool get_tx_key(const std::vector<std::string> &args);
bool check_tx_key(const std::vector<std::string> &args);
bool check_tx_key_helper(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const crypto::key_derivation &derivation);
bool get_tx_proof(const std::vector<std::string> &args);
bool check_tx_proof(const std::vector<std::string> &args);
bool show_transfers(const std::vector<std::string> &args);

140
src/wallet/api/wallet.cpp
View file

@ -1385,24 +1385,148 @@ std::string WalletImpl::getUserNote(const std::string &txid) const
return m_wallet->get_tx_note(htxid);
}
std::string WalletImpl::getTxKey(const std::string &txid) const
std::string WalletImpl::getTxKey(const std::string &txid_str) const
{
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(txid, txid_data) || txid_data.size() != sizeof(crypto::hash))
crypto::hash txid;
if(!epee::string_tools::hex_to_pod(txid_str, txid))
{
return "";
m_status = Status_Error;
m_errorString = tr("Failed to parse txid");
return "";
}
const crypto::hash htxid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
if (m_wallet->get_tx_key(htxid, tx_key, additional_tx_keys))
if (m_wallet->get_tx_key(txid, tx_key, additional_tx_keys))
{
return epee::string_tools::pod_to_hex(tx_key);
m_status = Status_Ok;
std::ostringstream oss;
oss << epee::string_tools::pod_to_hex(tx_key);
for (size_t i = 0; i < additional_tx_keys.size(); ++i)
oss << epee::string_tools::pod_to_hex(additional_tx_keys[i]);
return oss.str();
}
else
{
return "";
m_status = Status_Error;
m_errorString = tr("no tx keys found for this txid");
return "";
}
}
bool WalletImpl::checkTxKey(const std::string &txid_str, std::string tx_key_str, const std::string &address_str, uint64_t &received, bool &in_pool, uint64_t &confirmations)
{
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(txid_str, txid))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse txid");
return false;
}
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
if (!epee::string_tools::hex_to_pod(tx_key_str.substr(0, 64), tx_key))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse tx key");
return false;
}
tx_key_str = tx_key_str.substr(64);
while (!tx_key_str.empty())
{
additional_tx_keys.resize(additional_tx_keys.size() + 1);
if (!epee::string_tools::hex_to_pod(tx_key_str.substr(0, 64), additional_tx_keys.back()))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse tx key");
return false;
}
tx_key_str = tx_key_str.substr(64);
}
cryptonote::address_parse_info info;
if (!cryptonote::get_account_address_from_str(info, m_wallet->testnet(), address_str))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse address");
return false;
}
try
{
m_wallet->check_tx_key(txid, tx_key, additional_tx_keys, info.address, received, in_pool, confirmations);
m_status = Status_Ok;
return true;
}
catch (const std::exception &e)
{
m_status = Status_Error;
m_errorString = e.what();
return false;
}
}
std::string WalletImpl::getTxProof(const std::string &txid_str, const std::string &address_str, const std::string &message, std::string &error_str) const
{
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(txid_str, txid))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse txid");
return "";
}
cryptonote::address_parse_info info;
if (!cryptonote::get_account_address_from_str(info, m_wallet->testnet(), address_str))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse address");
return "";
}
try
{
m_status = Status_Ok;
return m_wallet->get_tx_proof(txid, info.address, info.is_subaddress, message, error_str);
}
catch (const std::exception &e)
{
m_status = Status_Error;
m_errorString = e.what();
return "";
}
}
bool WalletImpl::checkTxProof(const std::string &txid_str, const std::string &address_str, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations)
{
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(txid_str, txid))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse txid");
return false;
}
cryptonote::address_parse_info info;
if (!cryptonote::get_account_address_from_str(info, m_wallet->testnet(), address_str))
{
m_status = Status_Error;
m_errorString = tr("Failed to parse address");
return false;
}
try
{
good = m_wallet->check_tx_proof(txid, info.address, info.is_subaddress, message, signature, received, in_pool, confirmations);
m_status = Status_Ok;
return true;
}
catch (const std::exception &e)
{
m_status = Status_Error;
m_errorString = e.what();
return false;
}
}

3
src/wallet/api/wallet.h
View file

@ -137,6 +137,9 @@ public:
virtual bool setUserNote(const std::string &txid, const std::string &note);
virtual std::string getUserNote(const std::string &txid) const;
virtual std::string getTxKey(const std::string &txid) const;
virtual bool checkTxKey(const std::string &txid, std::string tx_key, const std::string &address, uint64_t &received, bool &in_pool, uint64_t &confirmations);
virtual std::string getTxProof(const std::string &txid, const std::string &address, const std::string &message, std::string &error_str) const;
virtual bool checkTxProof(const std::string &txid, const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations);
virtual std::string signMessage(const std::string &message);
virtual bool verifySignedMessage(const std::string &message, const std::string &address, const std::string &signature) const;
virtual void startRefresh();

149
src/wallet/api/wallet_manager.cpp
View file

@ -189,155 +189,6 @@ bool WalletManagerImpl::connected(uint32_t *version) const
return true;
}
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
{
error = "";
cryptonote::blobdata txid_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(txid_text, txid_data) || txid_data.size() != sizeof(crypto::hash))
{
error = tr("failed to parse txid");
return false;
}
crypto::hash txid = *reinterpret_cast<const crypto::hash*>(txid_data.data());
if (txkey_text.size() < 64 || txkey_text.size() % 64)
{
error = tr("failed to parse tx key");
return false;
}
crypto::secret_key tx_key;
cryptonote::blobdata tx_key_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(txkey_text, tx_key_data) || tx_key_data.size() != sizeof(crypto::hash))
{
error = tr("failed to parse tx key");
return false;
}
tx_key = *reinterpret_cast<const crypto::secret_key*>(tx_key_data.data());
bool testnet = address_text[0] != '4';
cryptonote::address_parse_info info;
if(!cryptonote::get_account_address_from_str(info, testnet, address_text))
{
error = tr("failed to parse address");
return false;
}
cryptonote::COMMAND_RPC_GET_TRANSACTIONS::request req;
cryptonote::COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
if (!connect_and_invoke(m_daemonAddress, "/gettransactions", req, res) ||
(res.txs.size() != 1 && res.txs_as_hex.size() != 1))
{
error = tr("failed to get transaction from daemon");
return false;
}
cryptonote::blobdata tx_data;
bool ok;
if (res.txs.size() == 1)
ok = epee::string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = epee::string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
if (!ok)
{
error = tr("failed to parse transaction from daemon");
return false;
}
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash))
{
error = tr("failed to validate transaction from daemon");
return false;
}
if (tx_hash != txid)
{
error = tr("failed to get the right transaction from daemon");
return false;
}
crypto::key_derivation derivation;
if (!crypto::generate_key_derivation(info.address.m_view_public_key, tx_key, derivation))
{
error = tr("failed to generate key derivation from supplied parameters");
return false;
}
received = 0;
try {
for (size_t n = 0; n < tx.vout.size(); ++n)
{
if (typeid(cryptonote::txout_to_key) != tx.vout[n].target.type())
continue;
const cryptonote::txout_to_key tx_out_to_key = boost::get<cryptonote::txout_to_key>(tx.vout[n].target);
crypto::public_key pubkey;
derive_public_key(derivation, n, info.address.m_spend_public_key, pubkey);
if (pubkey == tx_out_to_key.key)
{
uint64_t amount;
if (tx.version == 1)
{
amount = tx.vout[n].amount;
}
else
{
try
{
rct::key Ctmp;
//rct::key amount_key = rct::hash_to_scalar(rct::scalarmultKey(rct::pk2rct(address.m_view_public_key), rct::sk2rct(tx_key)));
crypto::key_derivation derivation;
bool r = crypto::generate_key_derivation(info.address.m_view_public_key, tx_key, derivation);
if (!r)
{
LOG_ERROR("Failed to generate key derivation to decode rct output " << n);
amount = 0;
}
else
{
crypto::secret_key scalar1;
crypto::derivation_to_scalar(derivation, n, scalar1);
rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1));
rct::key C = tx.rct_signatures.outPk[n].mask;
rct::addKeys2(Ctmp, ecdh_info.mask, ecdh_info.amount, rct::H);
if (rct::equalKeys(C, Ctmp))
amount = rct::h2d(ecdh_info.amount);
else
amount = 0;
}
}
catch (...) { amount = 0; }
}
received += amount;
}
}
}
catch(const std::exception &e)
{
LOG_ERROR("error: " << e.what());
error = std::string(tr("error: ")) + e.what();
return false;
}
if (received > 0)
{
LOG_PRINT_L1(get_account_address_as_str(testnet, info.is_subaddress, info.address) << " " << tr("received") << " " << cryptonote::print_money(received) << " " << tr("in txid") << " " << txid);
}
else
{
LOG_PRINT_L1(get_account_address_as_str(testnet, info.is_subaddress, info.address) << " " << tr("received nothing in txid") << " " << txid);
}
if (res.txs.front().in_pool)
{
height = 0;
}
else
{
height = res.txs.front().block_height;
}
return true;
}
uint64_t WalletManagerImpl::blockchainHeight() const
{
cryptonote::COMMAND_RPC_GET_INFO::request ireq;

1
src/wallet/api/wallet_manager.h
View file

@ -55,7 +55,6 @@ public:
std::string errorString() const;
void setDaemonAddress(const std::string &address);
bool connected(uint32_t *version = NULL) const;
bool checkPayment(const std::string &address, const std::string &txid, const std::string &txkey, const std::string &daemon_address, uint64_t &received, uint64_t &height, std::string &error) const;
uint64_t blockchainHeight() const;
uint64_t blockchainTargetHeight() const;
uint64_t networkDifficulty() const;

349
src/wallet/wallet2.cpp
View file

@ -6208,6 +6208,355 @@ bool wallet2::get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key, s
return true;
}
void wallet2::check_tx_key(const crypto::hash &txid, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations)
{
crypto::key_derivation derivation;
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(address.m_view_public_key, tx_key, derivation), error::wallet_internal_error,
"Failed to generate key derivation from supplied parameters");
std::vector<crypto::key_derivation> additional_derivations;
additional_derivations.resize(additional_tx_keys.size());
for (size_t i = 0; i < additional_tx_keys.size(); ++i)
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(address.m_view_public_key, additional_tx_keys[i], additional_derivations[i]), error::wallet_internal_error,
"Failed to generate key derivation from supplied parameters");
check_tx_key_helper(txid, derivation, additional_derivations, address, received, in_pool, confirmations);
}
void wallet2::check_tx_key_helper(const crypto::hash &txid, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations)
{
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
m_daemon_rpc_mutex.lock();
bool ok = epee::net_utils::invoke_http_json("/gettransactions", req, res, m_http_client);
m_daemon_rpc_mutex.unlock();
THROW_WALLET_EXCEPTION_IF(!ok || (res.txs.size() != 1 && res.txs_as_hex.size() != 1),
error::wallet_internal_error, "Failed to get transaction from daemon");
cryptonote::blobdata tx_data;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
THROW_WALLET_EXCEPTION_IF(!ok, error::wallet_internal_error, "Failed to parse transaction from daemon");
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
THROW_WALLET_EXCEPTION_IF(!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash), error::wallet_internal_error,
"Failed to validate transaction from daemon");
THROW_WALLET_EXCEPTION_IF(tx_hash != txid, error::wallet_internal_error,
"Failed to get the right transaction from daemon");
THROW_WALLET_EXCEPTION_IF(!additional_derivations.empty() && additional_derivations.size() != tx.vout.size(), error::wallet_internal_error,
"The size of additional derivations is wrong");
received = 0;
for (size_t n = 0; n < tx.vout.size(); ++n)
{
const cryptonote::txout_to_key* const out_key = boost::get<cryptonote::txout_to_key>(std::addressof(tx.vout[n].target));
if (!out_key)
continue;
crypto::public_key derived_out_key;
derive_public_key(derivation, n, address.m_spend_public_key, derived_out_key);
bool found = out_key->key == derived_out_key;
crypto::key_derivation found_derivation = derivation;
if (!found && !additional_derivations.empty())
{
derive_public_key(additional_derivations[n], n, address.m_spend_public_key, derived_out_key);
found = out_key->key == derived_out_key;
found_derivation = additional_derivations[n];
}
if (found)
{
uint64_t amount;
if (tx.version == 1 || tx.rct_signatures.type == rct::RCTTypeNull)
{
amount = tx.vout[n].amount;
}
else
{
crypto::secret_key scalar1;
crypto::derivation_to_scalar(found_derivation, n, scalar1);
rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1));
const rct::key C = tx.rct_signatures.outPk[n].mask;
rct::key Ctmp;
rct::addKeys2(Ctmp, ecdh_info.mask, ecdh_info.amount, rct::H);
if (rct::equalKeys(C, Ctmp))
amount = rct::h2d(ecdh_info.amount);
else
amount = 0;
}
received += amount;
}
}
in_pool = res.txs.front().in_pool;
confirmations = (uint64_t)-1;
if (!in_pool)
{
std::string err;
uint64_t bc_height = get_daemon_blockchain_height(err);
if (err.empty())
confirmations = bc_height - (res.txs.front().block_height + 1);
}
}
std::string wallet2::get_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message, std::string &error_str)
{
error_str = "";
// determine if the address is found in the subaddress hash table (i.e. whether the proof is outbound or inbound)
const bool is_out = m_subaddresses.count(address.m_spend_public_key) == 0;
std::string prefix_data((const char*)&txid, sizeof(crypto::hash));
prefix_data += message;
crypto::hash prefix_hash;
crypto::cn_fast_hash(prefix_data.data(), prefix_data.size(), prefix_hash);
std::vector<crypto::public_key> shared_secret;
std::vector<crypto::signature> sig;
std::string sig_str;
if (is_out)
{
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
if (!get_tx_key(txid, tx_key, additional_tx_keys))
{
error_str = tr("Tx secret key wasn't found in the wallet file.");
return {};
}
const size_t num_sigs = 1 + additional_tx_keys.size();
shared_secret.resize(num_sigs);
sig.resize(num_sigs);
shared_secret[0] = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(address.m_view_public_key), rct::sk2rct(tx_key)));
crypto::public_key tx_pub_key;
if (is_subaddress)
{
tx_pub_key = rct2pk(rct::scalarmultKey(rct::pk2rct(address.m_spend_public_key), rct::sk2rct(tx_key)));
crypto::generate_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, address.m_spend_public_key, shared_secret[0], tx_key, sig[0]);
}
else
{
crypto::secret_key_to_public_key(tx_key, tx_pub_key);
crypto::generate_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, boost::none, shared_secret[0], tx_key, sig[0]);
}
for (size_t i = 1; i < num_sigs; ++i)
{
shared_secret[i] = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(address.m_view_public_key), rct::sk2rct(additional_tx_keys[i - 1])));
if (is_subaddress)
{
tx_pub_key = rct2pk(rct::scalarmultKey(rct::pk2rct(address.m_spend_public_key), rct::sk2rct(additional_tx_keys[i - 1])));
crypto::generate_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, address.m_spend_public_key, shared_secret[i], additional_tx_keys[i - 1], sig[i]);
}
else
{
crypto::secret_key_to_public_key(additional_tx_keys[i - 1], tx_pub_key);
crypto::generate_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, boost::none, shared_secret[i], additional_tx_keys[i - 1], sig[i]);
}
}
sig_str = std::string("OutProofV1");
}
else
{
// fetch tx pubkey from the daemon
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
m_daemon_rpc_mutex.lock();
bool ok = net_utils::invoke_http_json("/gettransactions", req, res, m_http_client);
m_daemon_rpc_mutex.unlock();
THROW_WALLET_EXCEPTION_IF(!ok || (res.txs.size() != 1 && res.txs_as_hex.size() != 1),
error::wallet_internal_error, "Failed to get transaction from daemon");
cryptonote::blobdata tx_data;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
THROW_WALLET_EXCEPTION_IF(!ok, error::wallet_internal_error, "Failed to parse transaction from daemon");
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
THROW_WALLET_EXCEPTION_IF(!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash), error::wallet_internal_error,
"Failed to validate transaction from daemon");
THROW_WALLET_EXCEPTION_IF(tx_hash != txid, error::wallet_internal_error, "Failed to get the right transaction from daemon");
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(tx);
THROW_WALLET_EXCEPTION_IF(tx_pub_key == null_pkey, error::wallet_internal_error, "Tx pubkey was not found");
std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(tx);
const size_t num_sigs = 1 + additional_tx_pub_keys.size();
shared_secret.resize(num_sigs);
sig.resize(num_sigs);
const crypto::secret_key& a = m_account.get_keys().m_view_secret_key;
shared_secret[0] = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(tx_pub_key), rct::sk2rct(a)));
if (is_subaddress)
{
crypto::generate_tx_proof(prefix_hash, address.m_view_public_key, tx_pub_key, address.m_spend_public_key, shared_secret[0], a, sig[0]);
}
else
{
crypto::generate_tx_proof(prefix_hash, address.m_view_public_key, tx_pub_key, boost::none, shared_secret[0], a, sig[0]);
}
for (size_t i = 1; i < num_sigs; ++i)
{
shared_secret[i] = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(additional_tx_pub_keys[i - 1]), rct::sk2rct(a)));
if (is_subaddress)
{
crypto::generate_tx_proof(prefix_hash, address.m_view_public_key, additional_tx_pub_keys[i - 1], address.m_spend_public_key, shared_secret[i], a, sig[i]);
}
else
{
crypto::generate_tx_proof(prefix_hash, address.m_view_public_key, additional_tx_pub_keys[i - 1], boost::none, shared_secret[i], a, sig[i]);
}
}
sig_str = std::string("InProofV1");
}
const size_t num_sigs = shared_secret.size();
// check if this address actually received any funds
crypto::key_derivation derivation;
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(shared_secret[0], rct::rct2sk(rct::I), derivation), error::wallet_internal_error, "Failed to generate key derivation");
std::vector<crypto::key_derivation> additional_derivations(num_sigs - 1);
for (size_t i = 1; i < num_sigs; ++i)
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(shared_secret[i], rct::rct2sk(rct::I), additional_derivations[i - 1]), error::wallet_internal_error, "Failed to generate key derivation");
uint64_t received;
bool in_pool;
uint64_t confirmations;
check_tx_key_helper(txid, derivation, additional_derivations, address, received, in_pool, confirmations);
if (!received)
{
error_str = tr("No funds received in this tx.");
return {};
}
// concatenate all signature strings
for (size_t i = 0; i < num_sigs; ++i)
sig_str +=
tools::base58::encode(std::string((const char *)&shared_secret[i], sizeof(crypto::public_key))) +
tools::base58::encode(std::string((const char *)&sig[i], sizeof(crypto::signature)));
return sig_str;
}
bool wallet2::check_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message, const std::string &sig_str, uint64_t &received, bool &in_pool, uint64_t &confirmations)
{
const bool is_out = sig_str.substr(0, 3) == "Out";
const std::string header = is_out ? "OutProofV1" : "InProofV1";
const size_t header_len = header.size();
THROW_WALLET_EXCEPTION_IF(sig_str.size() < header_len || sig_str.substr(0, header_len) != header, error::wallet_internal_error,
"Signature header check error");
// decode base58
std::vector<crypto::public_key> shared_secret(1);
std::vector<crypto::signature> sig(1);
const size_t pk_len = tools::base58::encode(std::string((const char *)&shared_secret[0], sizeof(crypto::public_key))).size();
const size_t sig_len = tools::base58::encode(std::string((const char *)&sig[0], sizeof(crypto::signature))).size();
const size_t num_sigs = (sig_str.size() - header_len) / (pk_len + sig_len);
THROW_WALLET_EXCEPTION_IF(sig_str.size() != header_len + num_sigs * (pk_len + sig_len), error::wallet_internal_error,
"Wrong signature size");
shared_secret.resize(num_sigs);
sig.resize(num_sigs);
for (size_t i = 0; i < num_sigs; ++i)
{
std::string pk_decoded;
std::string sig_decoded;
const size_t offset = header_len + i * (pk_len + sig_len);
THROW_WALLET_EXCEPTION_IF(!tools::base58::decode(sig_str.substr(offset, pk_len), pk_decoded), error::wallet_internal_error,
"Signature decoding error");
THROW_WALLET_EXCEPTION_IF(!tools::base58::decode(sig_str.substr(offset + pk_len, sig_len), sig_decoded), error::wallet_internal_error,
"Signature decoding error");
THROW_WALLET_EXCEPTION_IF(sizeof(crypto::public_key) != pk_decoded.size() || sizeof(crypto::signature) != sig_decoded.size(), error::wallet_internal_error,
"Signature decoding error");
memcpy(&shared_secret[i], pk_decoded.data(), sizeof(crypto::public_key));
memcpy(&sig[i], sig_decoded.data(), sizeof(crypto::signature));
}
// fetch tx pubkey from the daemon
COMMAND_RPC_GET_TRANSACTIONS::request req;
COMMAND_RPC_GET_TRANSACTIONS::response res;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
m_daemon_rpc_mutex.lock();
bool ok = net_utils::invoke_http_json("/gettransactions", req, res, m_http_client);
m_daemon_rpc_mutex.unlock();
THROW_WALLET_EXCEPTION_IF(!ok || (res.txs.size() != 1 && res.txs_as_hex.size() != 1),
error::wallet_internal_error, "Failed to get transaction from daemon");
cryptonote::blobdata tx_data;
if (res.txs.size() == 1)
ok = string_tools::parse_hexstr_to_binbuff(res.txs.front().as_hex, tx_data);
else
ok = string_tools::parse_hexstr_to_binbuff(res.txs_as_hex.front(), tx_data);
THROW_WALLET_EXCEPTION_IF(!ok, error::wallet_internal_error, "Failed to parse transaction from daemon");
crypto::hash tx_hash, tx_prefix_hash;
cryptonote::transaction tx;
THROW_WALLET_EXCEPTION_IF(!cryptonote::parse_and_validate_tx_from_blob(tx_data, tx, tx_hash, tx_prefix_hash), error::wallet_internal_error,
"Failed to validate transaction from daemon");
THROW_WALLET_EXCEPTION_IF(tx_hash != txid, error::wallet_internal_error, "Failed to get the right transaction from daemon");
crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(tx);
THROW_WALLET_EXCEPTION_IF(tx_pub_key == null_pkey, error::wallet_internal_error, "Tx pubkey was not found");
std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(tx);
THROW_WALLET_EXCEPTION_IF(additional_tx_pub_keys.size() + 1 != num_sigs, error::wallet_internal_error, "Signature size mismatch with additional tx pubkeys");
std::string prefix_data((const char*)&txid, sizeof(crypto::hash));
prefix_data += message;
crypto::hash prefix_hash;
crypto::cn_fast_hash(prefix_data.data(), prefix_data.size(), prefix_hash);
// check signature
std::vector<int> good_signature(num_sigs, 0);
if (is_out)
{
good_signature[0] = is_subaddress ?
crypto::check_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, address.m_spend_public_key, shared_secret[0], sig[0]) :
crypto::check_tx_proof(prefix_hash, tx_pub_key, address.m_view_public_key, boost::none, shared_secret[0], sig[0]);
for (size_t i = 0; i < additional_tx_pub_keys.size(); ++i)
{
good_signature[i + 1] = is_subaddress ?
crypto::check_tx_proof(prefix_hash, additional_tx_pub_keys[i], address.m_view_public_key, address.m_spend_public_key, shared_secret[i + 1], sig[i + 1]) :
crypto::check_tx_proof(prefix_hash, additional_tx_pub_keys[i], address.m_view_public_key, boost::none, shared_secret[i + 1], sig[i + 1]);
}
}
else
{
good_signature[0] = is_subaddress ?
crypto::check_tx_proof(prefix_hash, address.m_view_public_key, tx_pub_key, address.m_spend_public_key, shared_secret[0], sig[0]) :
crypto::check_tx_proof(prefix_hash, address.m_view_public_key, tx_pub_key, boost::none, shared_secret[0], sig[0]);
for (size_t i = 0; i < additional_tx_pub_keys.size(); ++i)
{
good_signature[i + 1] = is_subaddress ?
crypto::check_tx_proof(prefix_hash, address.m_view_public_key, additional_tx_pub_keys[i], address.m_spend_public_key, shared_secret[i + 1], sig[i + 1]) :
crypto::check_tx_proof(prefix_hash, address.m_view_public_key, additional_tx_pub_keys[i], boost::none, shared_secret[i + 1], sig[i + 1]);
}
}
if (std::any_of(good_signature.begin(), good_signature.end(), [](int i) { return i > 0; }))
{
// obtain key derivation by multiplying scalar 1 to the shared secret
crypto::key_derivation derivation;
if (good_signature[0])
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(shared_secret[0], rct::rct2sk(rct::I), derivation), error::wallet_internal_error, "Failed to generate key derivation");
std::vector<crypto::key_derivation> additional_derivations(num_sigs - 1);
for (size_t i = 1; i < num_sigs; ++i)
if (good_signature[i])
THROW_WALLET_EXCEPTION_IF(!crypto::generate_key_derivation(shared_secret[i], rct::rct2sk(rct::I), additional_derivations[i - 1]), error::wallet_internal_error, "Failed to generate key derivation");
check_tx_key_helper(txid, derivation, additional_derivations, address, received, in_pool, confirmations);
return true;
}
return false;
}
std::string wallet2::get_wallet_file() const
{
return m_wallet_file;

4
src/wallet/wallet2.h
View file

@ -684,6 +684,10 @@ namespace tools
uint32_t get_confirm_backlog_threshold() const { return m_confirm_backlog_threshold; };
bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key, std::vector<crypto::secret_key> &additional_tx_keys) const;
void check_tx_key(const crypto::hash &txid, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations);
void check_tx_key_helper(const crypto::hash &txid, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations);
std::string get_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message, std::string &error_str);
bool check_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message, const std::string &sig_str, uint64_t &received, bool &in_pool, uint64_t &confirmations);
/*!
* \brief GUI Address book get/store

16
src/wallet/wallet2_api.h
View file

@ -700,6 +700,9 @@ struct Wallet
*/
virtual std::string getUserNote(const std::string &txid) const = 0;
virtual std::string getTxKey(const std::string &txid) const = 0;
virtual bool checkTxKey(const std::string &txid, std::string tx_key, const std::string &address, uint64_t &received, bool &in_pool, uint64_t &confirmations) = 0;
virtual std::string getTxProof(const std::string &txid, const std::string &address, const std::string &message, std::string &error_str) const = 0;
virtual bool checkTxProof(const std::string &txid, const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations) = 0;
/*
* \brief signMessage - sign a message with the spend private key
@ -819,19 +822,6 @@ struct WalletManager
*/
virtual std::vector<std::string> findWallets(const std::string &path) = 0;
/*!
* \brief checkPayment - checks a payment was made using a txkey
* \param address - the address the payment was sent to
* \param txid - the transaction id for that payment
* \param txkey - the transaction's secret key
* \param daemon_address - the address (host and port) to the daemon to request transaction data
* \param received - if succesful, will hold the amount of monero received
* \param height - if succesful, will hold the height of the transaction (0 if only in the pool)
* \param error - if unsuccesful, will hold an error string with more information about the error
* \return - true is succesful, false otherwise
*/
virtual bool checkPayment(const std::string &address, const std::string &txid, const std::string &txkey, const std::string &daemon_address, uint64_t &received, uint64_t &height, std::string &error) const = 0;
//! returns verbose error string regarding last error;
virtual std::string errorString() const = 0;

161
src/wallet/wallet_rpc_server.cpp
View file

@ -623,6 +623,8 @@ namespace tools
if (req.get_tx_key)
{
res.tx_key = epee::string_tools::pod_to_hex(ptx_vector.back().tx_key);
for (const crypto::secret_key& additional_tx_key : ptx_vector.back().additional_tx_keys)
res.tx_key += epee::string_tools::pod_to_hex(additional_tx_key);
}
res.fee = ptx_vector.back().fee;
@ -685,6 +687,8 @@ namespace tools
if (req.get_tx_keys)
{
res.tx_key_list.push_back(epee::string_tools::pod_to_hex(ptx.tx_key));
for (const crypto::secret_key& additional_tx_key : ptx.additional_tx_keys)
res.tx_key_list.back() += epee::string_tools::pod_to_hex(additional_tx_key);
}
// Compute amount leaving wallet in tx. By convention dests does not include change outputs
ptx_amount = 0;
@ -1396,6 +1400,163 @@ namespace tools
res.value = m_wallet->get_attribute(req.key);
return true;
}
bool wallet_rpc_server::on_get_tx_key(const wallet_rpc::COMMAND_RPC_GET_TX_KEY::request& req, wallet_rpc::COMMAND_RPC_GET_TX_KEY::response& res, epee::json_rpc::error& er)
{
if (!m_wallet) return not_open(er);
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(req.txid, txid))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_TXID;
er.message = "TX ID has invalid format";
return false;
}
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
if (!m_wallet->get_tx_key(txid, tx_key, additional_tx_keys))
{
er.code = WALLET_RPC_ERROR_CODE_NO_TXKEY;
er.message = "No tx secret key is stored for this tx";
return false;
}
std::ostringstream oss;
oss << epee::string_tools::pod_to_hex(tx_key);
for (size_t i = 0; i < additional_tx_keys.size(); ++i)
oss << epee::string_tools::pod_to_hex(additional_tx_keys[i]);
res.tx_key = oss.str();
return true;
}
//------------------------------------------------------------------------------------------------------------------------------
bool wallet_rpc_server::on_check_tx_key(const wallet_rpc::COMMAND_RPC_CHECK_TX_KEY::request& req, wallet_rpc::COMMAND_RPC_CHECK_TX_KEY::response& res, epee::json_rpc::error& er)
{
if (!m_wallet) return not_open(er);
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(req.txid, txid))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_TXID;
er.message = "TX ID has invalid format";
return false;
}
std::string tx_key_str = req.tx_key;
crypto::secret_key tx_key;
if (!epee::string_tools::hex_to_pod(tx_key_str.substr(0, 64), tx_key))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_KEY;
er.message = "Tx key has invalid format";
return false;
}
tx_key_str = tx_key_str.substr(64);
std::vector<crypto::secret_key> additional_tx_keys;
while (!tx_key_str.empty())
{
additional_tx_keys.resize(additional_tx_keys.size() + 1);
if (!epee::string_tools::hex_to_pod(tx_key_str.substr(0, 64), additional_tx_keys.back()))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_KEY;
er.message = "Tx key has invalid format";
return false;
}
tx_key_str = tx_key_str.substr(64);
}
cryptonote::address_parse_info info;
if(!get_account_address_from_str(info, m_wallet->testnet(), req.address))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_ADDRESS;
er.message = "Invalid address";
return false;
}
try
{
m_wallet->check_tx_key(txid, tx_key, additional_tx_keys, info.address, res.received, res.in_pool, res.confirmations);
}
catch (const std::exception &e)
{
er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
er.message = e.what();
return false;
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------------
bool wallet_rpc_server::on_get_tx_proof(const wallet_rpc::COMMAND_RPC_GET_TX_PROOF::request& req, wallet_rpc::COMMAND_RPC_GET_TX_PROOF::response& res, epee::json_rpc::error& er)
{
if (!m_wallet) return not_open(er);
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(req.txid, txid))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_TXID;
er.message = "TX ID has invalid format";
return false;
}
cryptonote::address_parse_info info;
if(!get_account_address_from_str(info, m_wallet->testnet(), req.address))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_ADDRESS;
er.message = "Invalid address";
return false;
}
try
{
res.signature = m_wallet->get_tx_proof(txid, info.address, info.is_subaddress, req.message, er.message);
if (res.signature.empty())
{
er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
return false;
}
}
catch (const std::exception &e)
{
er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
er.message = e.what();
return false;
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------------
bool wallet_rpc_server::on_check_tx_proof(const wallet_rpc::COMMAND_RPC_CHECK_TX_PROOF::request& req, wallet_rpc::COMMAND_RPC_CHECK_TX_PROOF::response& res, epee::json_rpc::error& er)
{
if (!m_wallet) return not_open(er);
crypto::hash txid;
if (!epee::string_tools::hex_to_pod(req.txid, txid))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_TXID;
er.message = "TX ID has invalid format";
return false;
}
cryptonote::address_parse_info info;
if(!get_account_address_from_str(info, m_wallet->testnet(), req.address))
{
er.code = WALLET_RPC_ERROR_CODE_WRONG_ADDRESS;
er.message = "Invalid address";
return false;
}
try
{
uint64_t received;
bool in_pool;
uint64_t confirmations;
res.good = m_wallet->check_tx_proof(txid, info.address, info.is_subaddress, req.message, req.signature, res.received, res.in_pool, res.confirmations);
}
catch (const std::exception &e)
{
er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
er.message = e.what();
return false;
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------------
bool wallet_rpc_server::on_get_transfers(const wallet_rpc::COMMAND_RPC_GET_TRANSFERS::request& req, wallet_rpc::COMMAND_RPC_GET_TRANSFERS::response& res, epee::json_rpc::error& er)
{

8
src/wallet/wallet_rpc_server.h
View file

@ -93,6 +93,10 @@ namespace tools
MAP_JON_RPC_WE("get_tx_notes", on_get_tx_notes, wallet_rpc::COMMAND_RPC_GET_TX_NOTES)
MAP_JON_RPC_WE("set_attribute", on_set_attribute, wallet_rpc::COMMAND_RPC_SET_ATTRIBUTE)
MAP_JON_RPC_WE("get_attribute", on_get_attribute, wallet_rpc::COMMAND_RPC_GET_ATTRIBUTE)
MAP_JON_RPC_WE("get_tx_key", on_get_tx_key, wallet_rpc::COMMAND_RPC_GET_TX_KEY)
MAP_JON_RPC_WE("check_tx_key", on_check_tx_key, wallet_rpc::COMMAND_RPC_CHECK_TX_KEY)
MAP_JON_RPC_WE("get_tx_proof", on_get_tx_proof, wallet_rpc::COMMAND_RPC_GET_TX_PROOF)
MAP_JON_RPC_WE("check_tx_proof", on_check_tx_proof, wallet_rpc::COMMAND_RPC_CHECK_TX_PROOF)
MAP_JON_RPC_WE("get_transfers", on_get_transfers, wallet_rpc::COMMAND_RPC_GET_TRANSFERS)
MAP_JON_RPC_WE("get_transfer_by_txid", on_get_transfer_by_txid, wallet_rpc::COMMAND_RPC_GET_TRANSFER_BY_TXID)
MAP_JON_RPC_WE("sign", on_sign, wallet_rpc::COMMAND_RPC_SIGN)
@ -140,6 +144,10 @@ namespace tools
bool on_get_tx_notes(const wallet_rpc::COMMAND_RPC_GET_TX_NOTES::request& req, wallet_rpc::COMMAND_RPC_GET_TX_NOTES::response& res, epee::json_rpc::error& er);
bool on_set_attribute(const wallet_rpc::COMMAND_RPC_SET_ATTRIBUTE::request& req, wallet_rpc::COMMAND_RPC_SET_ATTRIBUTE::response& res, epee::json_rpc::error& er);
bool on_get_attribute(const wallet_rpc::COMMAND_RPC_GET_ATTRIBUTE::request& req, wallet_rpc::COMMAND_RPC_GET_ATTRIBUTE::response& res, epee::json_rpc::error& er);
bool on_get_tx_key(const wallet_rpc::COMMAND_RPC_GET_TX_KEY::request& req, wallet_rpc::COMMAND_RPC_GET_TX_KEY::response& res, epee::json_rpc::error& er);
bool on_check_tx_key(const wallet_rpc::COMMAND_RPC_CHECK_TX_KEY::request& req, wallet_rpc::COMMAND_RPC_CHECK_TX_KEY::response& res, epee::json_rpc::error& er);
bool on_get_tx_proof(const wallet_rpc::COMMAND_RPC_GET_TX_PROOF::request& req, wallet_rpc::COMMAND_RPC_GET_TX_PROOF::response& res, epee::json_rpc::error& er);
bool on_check_tx_proof(const wallet_rpc::COMMAND_RPC_CHECK_TX_PROOF::request& req, wallet_rpc::COMMAND_RPC_CHECK_TX_PROOF::response& res, epee::json_rpc::error& er);
bool on_get_transfers(const wallet_rpc::COMMAND_RPC_GET_TRANSFERS::request& req, wallet_rpc::COMMAND_RPC_GET_TRANSFERS::response& res, epee::json_rpc::error& er);
bool on_get_transfer_by_txid(const wallet_rpc::COMMAND_RPC_GET_TRANSFER_BY_TXID::request& req, wallet_rpc::COMMAND_RPC_GET_TRANSFER_BY_TXID::response& res, epee::json_rpc::error& er);
bool on_sign(const wallet_rpc::COMMAND_RPC_SIGN::request& req, wallet_rpc::COMMAND_RPC_SIGN::response& res, epee::json_rpc::error& er);

108
src/wallet/wallet_rpc_server_commands_defs.h
View file

@ -828,6 +828,114 @@ namespace wallet_rpc
};
};
struct COMMAND_RPC_GET_TX_KEY
{
struct request
{
std::string txid;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(txid)
END_KV_SERIALIZE_MAP()
};
struct response
{
std::string tx_key;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(tx_key)
END_KV_SERIALIZE_MAP()
};
};
struct COMMAND_RPC_CHECK_TX_KEY
{
struct request
{
std::string txid;
std::string tx_key;
std::string address;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(txid)
KV_SERIALIZE(tx_key)
KV_SERIALIZE(address)
END_KV_SERIALIZE_MAP()
};
struct response
{
uint64_t received;
bool in_pool;
uint64_t confirmations;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(received)
KV_SERIALIZE(in_pool)
KV_SERIALIZE(confirmations)
END_KV_SERIALIZE_MAP()
};
};
struct COMMAND_RPC_GET_TX_PROOF
{
struct request
{
std::string txid;
std::string address;
std::string message;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(txid)
KV_SERIALIZE(address)
KV_SERIALIZE(message)
END_KV_SERIALIZE_MAP()
};
struct response
{
std::string signature;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(signature)
END_KV_SERIALIZE_MAP()
};
};
struct COMMAND_RPC_CHECK_TX_PROOF
{
struct request
{
std::string txid;
std::string address;
std::string message;
std::string signature;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(txid)
KV_SERIALIZE(address)
KV_SERIALIZE(message)
KV_SERIALIZE(signature)
END_KV_SERIALIZE_MAP()
};
struct response
{
bool good;
uint64_t received;
bool in_pool;
uint64_t confirmations;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(good)
KV_SERIALIZE(received)
KV_SERIALIZE(in_pool)
KV_SERIALIZE(confirmations)
END_KV_SERIALIZE_MAP()
};
};
struct transfer_entry
{
std::string txid;

2
src/wallet/wallet_rpc_server_error_codes.h
View file

@ -54,3 +54,5 @@
#define WALLET_RPC_ERROR_CODE_WALLET_ALREADY_EXISTS -21
#define WALLET_RPC_ERROR_CODE_INVALID_PASSWORD -22
#define WALLET_RPC_ERROR_CODE_NO_WALLET_DIR -23
#define WALLET_RPC_ERROR_CODE_NO_TXKEY -24
#define WALLET_RPC_ERROR_CODE_WRONG_KEY -25