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wallet2: fix key encryption when changing ask-password from 0/1 to 2

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we reuse the wallet_keys_unlocker object, which does the right thing
in conjunction with other users of decrypt/encrypt (ie, refresh).
This commit is contained in:
moneromooo-monero 2021-10-19 19:34:33 +00:00
parent 61e16307cd
commit 103c9733b3
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GPG Key ID: 686F07454D6CEFC3
2 changed files with 4 additions and 23 deletions
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23
src/wallet/wallet2.cpp
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@ -1229,8 +1229,6 @@ wallet2::wallet2(network_type nettype, uint64_t kdf_rounds, bool unattended, std
m_ring_history_saved(false), m_ring_history_saved(false),
m_ringdb(), m_ringdb(),
m_last_block_reward(0), m_last_block_reward(0),
m_encrypt_keys_after_refresh(boost::none),
m_decrypt_keys_lockers(0),
m_unattended(unattended), m_unattended(unattended),
m_devices_registered(false), m_devices_registered(false),
m_device_last_key_image_sync(0), m_device_last_key_image_sync(0),
@ -1838,8 +1836,7 @@ void wallet2::scan_output(const cryptonote::transaction &tx, bool miner_tx, cons
boost::optional<epee::wipeable_string> pwd = m_callback->on_get_password(pool ? "output found in pool" : "output received"); boost::optional<epee::wipeable_string> pwd = m_callback->on_get_password(pool ? "output found in pool" : "output received");
THROW_WALLET_EXCEPTION_IF(!pwd, error::password_needed, tr("Password is needed to compute key image for incoming monero")); THROW_WALLET_EXCEPTION_IF(!pwd, error::password_needed, tr("Password is needed to compute key image for incoming monero"));
THROW_WALLET_EXCEPTION_IF(!verify_password(*pwd), error::password_needed, tr("Invalid password: password is needed to compute key image for incoming monero")); THROW_WALLET_EXCEPTION_IF(!verify_password(*pwd), error::password_needed, tr("Invalid password: password is needed to compute key image for incoming monero"));
decrypt_keys(*pwd); m_encrypt_keys_after_refresh.reset(new wallet_keys_unlocker(*this, m_ask_password == AskPasswordToDecrypt && !m_unattended && !m_watch_only, *pwd));
m_encrypt_keys_after_refresh = *pwd;
} }
} }
@ -2971,11 +2968,7 @@ void wallet2::update_pool_state(std::vector<std::tuple<cryptonote::transaction,
MTRACE("update_pool_state start"); MTRACE("update_pool_state start");
auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() { auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() {
if (m_encrypt_keys_after_refresh) m_encrypt_keys_after_refresh.reset();
{
encrypt_keys(*m_encrypt_keys_after_refresh);
m_encrypt_keys_after_refresh = boost::none;
}
}); });
// get the pool state // get the pool state
@ -3406,11 +3399,7 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
start_height = 0; start_height = 0;
auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() { auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() {
if (m_encrypt_keys_after_refresh) m_encrypt_keys_after_refresh.reset();
{
encrypt_keys(*m_encrypt_keys_after_refresh);
m_encrypt_keys_after_refresh = boost::none;
}
}); });
auto scope_exit_handler_hwdev = epee::misc_utils::create_scope_leave_handler([&](){hwdev.computing_key_images(false);}); auto scope_exit_handler_hwdev = epee::misc_utils::create_scope_leave_handler([&](){hwdev.computing_key_images(false);});
@ -4511,18 +4500,12 @@ bool wallet2::verify_password(const std::string& keys_file_name, const epee::wip
void wallet2::encrypt_keys(const crypto::chacha_key &key) void wallet2::encrypt_keys(const crypto::chacha_key &key)
{ {
boost::lock_guard<boost::mutex> lock(m_decrypt_keys_lock);
if (--m_decrypt_keys_lockers) // another lock left ?
return;
m_account.encrypt_keys(key); m_account.encrypt_keys(key);
m_account.decrypt_viewkey(key); m_account.decrypt_viewkey(key);
} }
void wallet2::decrypt_keys(const crypto::chacha_key &key) void wallet2::decrypt_keys(const crypto::chacha_key &key)
{ {
boost::lock_guard<boost::mutex> lock(m_decrypt_keys_lock);
if (m_decrypt_keys_lockers++) // already unlocked ?
return;
m_account.encrypt_viewkey(key); m_account.encrypt_viewkey(key);
m_account.decrypt_keys(key); m_account.decrypt_keys(key);
} }

4
src/wallet/wallet2.h
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@ -1791,9 +1791,7 @@ private:
crypto::secret_key m_original_view_secret_key; crypto::secret_key m_original_view_secret_key;
crypto::chacha_key m_cache_key; crypto::chacha_key m_cache_key;
boost::optional<epee::wipeable_string> m_encrypt_keys_after_refresh; std::shared_ptr<wallet_keys_unlocker> m_encrypt_keys_after_refresh;
boost::mutex m_decrypt_keys_lock;
unsigned int m_decrypt_keys_lockers;
bool m_unattended; bool m_unattended;
bool m_devices_registered; bool m_devices_registered;