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Add the possibility to export private view key for fast scan.

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On client startup the device asks for authorization to export the private view key.
If user agree, the client hold the private view key allowing a fast blockchain scan.
If the user does not agree, the blockchain scan is fully done via the device.
This commit is contained in:
cslashm
2018-03-26 12:55:48 +02:00
parent 100b7bc10d
commit c77d2bfaa0
7 changed files with 200 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/wallet/wallet2.cpp
+44 -11
View File
@@ -1007,13 +1007,16 @@ void wallet2::set_unspent(size_t idx)
//----------------------------------------------------------------------------------------------------
void wallet2::check_acc_out_precomp(const tx_out &o, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, size_t i, tx_scan_info_t &tx_scan_info) const
{
hw::device &hwdev = m_account.get_device();
std::unique_lock<hw::device> hwdev_lock (hwdev);
hwdev.set_mode(hw::device::TRANSACTION_PARSE);
if (o.target.type() != typeid(txout_to_key))
{
tx_scan_info.error = true;
LOG_ERROR("wrong type id in transaction out");
return;
}
tx_scan_info.received = is_out_to_acc_precomp(m_subaddresses, boost::get<txout_to_key>(o.target).key, derivation, additional_derivations, i, m_account.get_device());
tx_scan_info.received = is_out_to_acc_precomp(m_subaddresses, boost::get<txout_to_key>(o.target).key, derivation, additional_derivations, i, hwdev);
if(tx_scan_info.received)
{
tx_scan_info.money_transfered = o.amount; // may be 0 for ringct outputs
@@ -1080,9 +1083,15 @@ void wallet2::scan_output(const cryptonote::transaction &tx, const crypto::publi
//----------------------------------------------------------------------------------------------------
void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote::transaction& tx, const std::vector<uint64_t> &o_indices, uint64_t height, uint64_t ts, bool miner_tx, bool pool, bool double_spend_seen)
{
// In this function, tx (probably) only contains the base information
// (that is, the prunable stuff may or may not be included)
//ensure device is let in NONE mode in any case
hw::device &hwdev = m_account.get_device();
std::unique_lock<hw::device> hwdev_lock (hwdev);
hw::reset_mode rst(hwdev);
hwdev_lock.unlock();
// In this function, tx (probably) only contains the base information
// (that is, the prunable stuff may or may not be included)
if (!miner_tx && !pool)
process_unconfirmed(txid, tx, height);
std::vector<size_t> outs;
@@ -1119,8 +1128,10 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
tools::threadpool& tpool = tools::threadpool::getInstance();
tools::threadpool::waiter waiter;
const cryptonote::account_keys& keys = m_account.get_keys();
hw::device &hwdev = m_account.get_device();
crypto::key_derivation derivation;
hwdev_lock.lock();
hwdev.set_mode(hw::device::TRANSACTION_PARSE);
if (!hwdev.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, derivation))
{
MWARNING("Failed to generate key derivation from tx pubkey, skipping");
@@ -1140,6 +1151,7 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
additional_derivations.pop_back();
}
}
hwdev_lock.unlock();
if (miner_tx && m_refresh_type == RefreshNoCoinbase)
{
@@ -1161,16 +1173,19 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
std::ref(tx_scan_info[i])));
}
waiter.wait();
// then scan all outputs from 0
hwdev_lock.lock();
hwdev.set_mode(hw::device::NONE);
for (size_t i = 0; i < tx.vout.size(); ++i)
{
THROW_WALLET_EXCEPTION_IF(tx_scan_info[i].error, error::acc_outs_lookup_error, tx, tx_pub_key, m_account.get_keys());
if (tx_scan_info[i].received)
{
hwdev.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, tx_scan_info[i].received->derivation);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
}
}
hwdev_lock.unlock();
}
}
else if (tx.vout.size() > 1 && tools::threadpool::getInstance().get_max_concurrency() > 1)
@@ -1181,14 +1196,19 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
std::ref(tx_scan_info[i])));
}
waiter.wait();
hwdev_lock.lock();
hwdev.set_mode(hw::device::NONE);
for (size_t i = 0; i < tx.vout.size(); ++i)
{
THROW_WALLET_EXCEPTION_IF(tx_scan_info[i].error, error::acc_outs_lookup_error, tx, tx_pub_key, m_account.get_keys());
if (tx_scan_info[i].received)
{
hwdev.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, tx_scan_info[i].received->derivation);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
}
}
hwdev_lock.unlock();
}
else
{
@@ -1198,7 +1218,11 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
THROW_WALLET_EXCEPTION_IF(tx_scan_info[i].error, error::acc_outs_lookup_error, tx, tx_pub_key, m_account.get_keys());
if (tx_scan_info[i].received)
{
hwdev_lock.lock();
hwdev.set_mode(hw::device::NONE);
hwdev.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, tx_scan_info[i].received->derivation);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
hwdev_lock.unlock();
}
}
}
@@ -7224,6 +7248,11 @@ bool wallet2::light_wallet_key_image_is_ours(const crypto::key_image& key_image,
// usable balance.
std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices, bool trusted_daemon)
{
//ensure device is let in NONE mode in any case
hw::device &hwdev = m_account.get_device();
std::unique_lock<hw::device> hwdev_lock (hwdev);
hw::reset_mode rst(hwdev);
if(m_light_wallet) {
// Populate m_transfers
light_wallet_get_unspent_outs();
@@ -7441,8 +7470,8 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
unsigned int original_output_index = 0;
std::vector<size_t>* unused_transfers_indices = &unused_transfers_indices_per_subaddr[0].second;
std::vector<size_t>* unused_dust_indices = &unused_dust_indices_per_subaddr[0].second;
hw::device &hwdev = m_account.get_device();
hwdev.set_signature_mode(hw::device::SIGNATURE_FAKE);
hwdev.set_mode(hw::device::TRANSACTION_CREATE_FAKE);
while ((!dsts.empty() && dsts[0].amount > 0) || adding_fee || !preferred_inputs.empty() || should_pick_a_second_output(use_rct, txes.back().selected_transfers.size(), *unused_transfers_indices, *unused_dust_indices)) {
TX &tx = txes.back();
@@ -7671,7 +7700,7 @@ skip_tx:
LOG_PRINT_L1("Done creating " << txes.size() << " transactions, " << print_money(accumulated_fee) <<
" total fee, " << print_money(accumulated_change) << " total change");
hwdev.set_signature_mode(hw::device::SIGNATURE_REAL);
hwdev.set_mode(hw::device::TRANSACTION_CREATE_REAL);
for (std::vector<TX>::iterator i = txes.begin(); i != txes.end(); ++i)
{
TX &tx = *i;
@@ -7802,6 +7831,11 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_single(const crypt
std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const cryptonote::account_public_address &address, bool is_subaddress, std::vector<size_t> unused_transfers_indices, std::vector<size_t> unused_dust_indices, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, bool trusted_daemon)
{
//ensure device is let in NONE mode in any case
hw::device &hwdev = m_account.get_device();
std::unique_lock<hw::device> hwdev_lock (hwdev);
hw::reset_mode rst(hwdev);
uint64_t accumulated_fee, accumulated_outputs, accumulated_change;
struct TX {
std::vector<size_t> selected_transfers;
@@ -7834,8 +7868,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
needed_fee = 0;
// while we have something to send
hw::device &hwdev = m_account.get_device();
hwdev.set_signature_mode(hw::device::SIGNATURE_FAKE);
hwdev.set_mode(hw::device::TRANSACTION_CREATE_FAKE);
while (!unused_dust_indices.empty() || !unused_transfers_indices.empty()) {
TX &tx = txes.back();
@@ -7921,7 +7954,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
LOG_PRINT_L1("Done creating " << txes.size() << " transactions, " << print_money(accumulated_fee) <<
" total fee, " << print_money(accumulated_change) << " total change");
hwdev.set_signature_mode(hw::device::SIGNATURE_REAL);
hwdev.set_mode(hw::device::TRANSACTION_CREATE_REAL);
for (std::vector<TX>::iterator i = txes.begin(); i != txes.end(); ++i)
{
TX &tx = *i;