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Fix sub-address tx scan.

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When additional keys was needed, the TX scan failed because the
derivation data was always recomputed with the main tx_key and not
the corresponding additional one.

Moreover this patch avoid perf decreasing when not using HW device.
This commit is contained in:
cslashm 2018-04-09 16:07:11 +02:00
parent 7090121b13
commit d481410bff
6 changed files with 33 additions and 3 deletions
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1
src/device/device.hpp
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@ -145,6 +145,7 @@ namespace hw {
virtual bool sc_secret_add( crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) = 0;
virtual crypto::secret_key generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) = 0;
virtual bool generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) = 0;
virtual bool conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations) = 0;
virtual bool derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) = 0;
virtual bool derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec, crypto::secret_key &derived_sec) = 0;
virtual bool derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub, crypto::public_key &derived_pub) = 0;

4
src/device/device_default.cpp
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@ -264,6 +264,10 @@ namespace hw {
return true;
}
bool device_default::conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations){
return true;
}
/* ======================================================================= */
/* TRANSACTION */
/* ======================================================================= */

1
src/device/device_default.hpp
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@ -93,6 +93,7 @@ namespace hw {
bool sc_secret_add(crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) override;
crypto::secret_key generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) override;
bool generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) override;
bool conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations);
bool derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) override;
bool derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec, crypto::secret_key &derived_sec) override;
bool derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub, crypto::public_key &derived_pub) override;

23
src/device/device_ledger.cpp
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@ -56,6 +56,7 @@ namespace hw {
#define ASSERT_RV(rv) CHECK_AND_ASSERT_THROW_MES((rv)==SCARD_S_SUCCESS, "Fail SCard API : (" << (rv) << ") "<< pcsc_stringify_error(rv)<<" Device="<<this->id<<", hCard="<<hCard<<", hContext="<<hContext);
#define ASSERT_SW(sw,ok,msk) CHECK_AND_ASSERT_THROW_MES(((sw)&(mask))==(ok), "Wrong Device Status : SW=" << std::hex << (sw) << " (EXPECT=" << std::hex << (ok) << ", MASK=" << std::hex << (mask) << ")") ;
#define ASSERT_T0(exp) CHECK_AND_ASSERT_THROW_MES(exp, "Protocol assert failure: "#exp ) ;
#define ASSERT_X(exp,msg) CHECK_AND_ASSERT_THROW_MES(exp, msg);
#ifdef DEBUG_HWDEVICE
crypto::secret_key dbg_viewkey;
@ -125,6 +126,10 @@ namespace hw {
return sec == crypto::null_skey;
}
bool operator==(const crypto::key_derivation &d0, const crypto::key_derivation &d1) {
return !memcmp(&d0, &d1, sizeof(d0));
}
/* ===================================================================== */
/* === Device ==== */
/* ===================================================================== */
@ -1094,6 +1099,24 @@ namespace hw {
return r;
}
bool device_ledger::conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations) {
const crypto::public_key *pkey=NULL;
if (derivation == main_derivation) {
pkey = &tx_pub_key;
MDEBUG("conceal derivation with main tx pub key");
} else {
for(size_t n=0; n < additional_derivations.size();++n) {
if(derivation == additional_derivations[n]) {
pkey = &additional_tx_pub_keys[n];
MDEBUG("conceal derivation with additionnal tx pub key");
break;
}
}
}
ASSERT_X(pkey, "Mismatched derivation on scan info");
return this->generate_key_derivation(*pkey, crypto::null_skey, derivation);
}
bool device_ledger::derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) {
AUTO_LOCK_CMD();
int offset;

1
src/device/device_ledger.hpp
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@ -169,6 +169,7 @@ namespace hw {
bool sc_secret_add(crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) override;
crypto::secret_key generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) override;
bool generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) override;
bool conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations);
bool derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) override;
bool derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec, crypto::secret_key &derived_sec) override;
bool derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub, crypto::public_key &derived_pub) override;

6
src/wallet/wallet2.cpp
View File

@ -1181,7 +1181,7 @@ 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.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, tx_scan_info[i].received->derivation);
hwdev.conceal_derivation(tx_scan_info[i].received->derivation, tx_pub_key, additional_tx_pub_keys, derivation, additional_derivations);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
}
}
@ -1204,7 +1204,7 @@ 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.generate_key_derivation(tx_pub_key, keys.m_view_secret_key, tx_scan_info[i].received->derivation);
hwdev.conceal_derivation(tx_scan_info[i].received->derivation, tx_pub_key, additional_tx_pub_keys, derivation, additional_derivations);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
}
}
@ -1220,7 +1220,7 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
{
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);
hwdev.conceal_derivation(tx_scan_info[i].received->derivation, tx_pub_key, additional_tx_pub_keys, derivation, additional_derivations);
scan_output(tx, tx_pub_key, i, tx_scan_info[i], num_vouts_received, tx_money_got_in_outs, outs);
hwdev_lock.unlock();
}