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make multisig work with subaddresses 

Thanks to kenshi84 for help getting this work
This commit is contained in:
moneromooo-monero 2017-10-21 12:14:31 +01:00
parent dffa0dceaf
commit fa5697127f
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
8 changed files with 89 additions and 82 deletions
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53
src/cryptonote_basic/cryptonote_format_utils.cpp
View File

@ -80,6 +80,31 @@ static std::atomic<uint64_t> tx_hashes_cached_count(0);
static std::atomic<uint64_t> block_hashes_calculated_count(0);
static std::atomic<uint64_t> block_hashes_cached_count(0);
#define CHECK_AND_ASSERT_THROW_MES_L1(expr, message) {if(!(expr)) {MWARNING(message); throw std::runtime_error(message);}}
namespace cryptonote
{
static inline unsigned char *operator &(ec_point &point) {
return &reinterpret_cast<unsigned char &>(point);
}
static inline const unsigned char *operator &(const ec_point &point) {
return &reinterpret_cast<const unsigned char &>(point);
}
// a copy of rct::addKeys, since we can't link to libringct to avoid circular dependencies
static void add_public_key(crypto::public_key &AB, const crypto::public_key &A, const crypto::public_key &B) {
ge_p3 B2, A2;
CHECK_AND_ASSERT_THROW_MES_L1(ge_frombytes_vartime(&B2, &B) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
CHECK_AND_ASSERT_THROW_MES_L1(ge_frombytes_vartime(&A2, &A) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_cached tmp2;
ge_p3_to_cached(&tmp2, &B2);
ge_p1p1 tmp3;
ge_add(&tmp3, &A2, &tmp2);
ge_p1p1_to_p3(&A2, &tmp3);
ge_p3_tobytes(&AB, &A2);
}
}
namespace cryptonote
{
//---------------------------------------------------------------
@ -182,6 +207,7 @@ namespace cryptonote
crypto::derive_secret_key(recv_derivation, real_output_index, ack.m_spend_secret_key, scalar_step1); // computes Hs(a*R || idx) + b
// step 2: add Hs(a || index_major || index_minor)
crypto::secret_key subaddr_sk;
crypto::secret_key scalar_step2;
if (received_index.is_zero())
{
@ -189,13 +215,32 @@ namespace cryptonote
}
else
{
crypto::secret_key m = get_subaddress_secret_key(ack.m_view_secret_key, received_index);
sc_add((unsigned char*)&scalar_step2, (unsigned char*)&scalar_step1, (unsigned char*)&m);
subaddr_sk = get_subaddress_secret_key(ack.m_view_secret_key, received_index);
sc_add((unsigned char*)&scalar_step2, (unsigned char*)&scalar_step1, (unsigned char*)&subaddr_sk);
}
in_ephemeral.sec = scalar_step2;
crypto::secret_key_to_public_key(in_ephemeral.sec, in_ephemeral.pub);
CHECK_AND_ASSERT_MES(in_ephemeral.pub == out_key, false, "key image helper precomp: given output pubkey doesn't match the derived one");
if (ack.m_multisig_keys.empty())
{
// when not in multisig, we know the full spend secret key, so the output pubkey can be obtained by scalarmultBase
CHECK_AND_ASSERT_MES(crypto::secret_key_to_public_key(in_ephemeral.sec, in_ephemeral.pub), false, "Failed to derive public key");
}
else
{
// when in multisig, we only know the partial spend secret key. but we do know the full spend public key, so the output pubkey can be obtained by using the standard CN key derivation
CHECK_AND_ASSERT_MES(crypto::derive_public_key(recv_derivation, real_output_index, ack.m_account_address.m_spend_public_key, in_ephemeral.pub), false, "Failed to derive public key");
// and don't forget to add the contribution from the subaddress part
if (!received_index.is_zero())
{
crypto::public_key subaddr_pk;
CHECK_AND_ASSERT_MES(crypto::secret_key_to_public_key(subaddr_sk, subaddr_pk), false, "Failed to derive public key");
add_public_key(in_ephemeral.pub, in_ephemeral.pub, subaddr_pk);
}
}
CHECK_AND_ASSERT_MES(in_ephemeral.pub == out_key,
false, "key image helper precomp: given output pubkey doesn't match the derived one");
}
crypto::generate_key_image(in_ephemeral.pub, in_ephemeral.sec, ki);

17
src/cryptonote_core/cryptonote_tx_utils.cpp
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@ -269,24 +269,15 @@ namespace cryptonote
in_contexts.push_back(input_generation_context_data());
keypair& in_ephemeral = in_contexts.back().in_ephemeral;
crypto::key_image img;
bool r;
if (msout)
{
r = generate_key_image_helper_old(sender_account_keys, src_entr.real_out_tx_key, src_entr.real_output_in_tx_index, in_ephemeral, img);
}
else
{
const auto& out_key = reinterpret_cast<const crypto::public_key&>(src_entr.outputs[src_entr.real_output].second.dest);
r = generate_key_image_helper(sender_account_keys, subaddresses, out_key, src_entr.real_out_tx_key, src_entr.real_out_additional_tx_keys, src_entr.real_output_in_tx_index, in_ephemeral, img);
}
if (!r)
const auto& out_key = reinterpret_cast<const crypto::public_key&>(src_entr.outputs[src_entr.real_output].second.dest);
if(!generate_key_image_helper(sender_account_keys, subaddresses, out_key, src_entr.real_out_tx_key, src_entr.real_out_additional_tx_keys, src_entr.real_output_in_tx_index, in_ephemeral, img))
{
LOG_ERROR("Key image generation failed!");
return false;
}
//check that derivated key is equal with real output key
if( !(in_ephemeral.pub == src_entr.outputs[src_entr.real_output].second.dest) )
//check that derivated key is equal with real output key (if non multisig)
if(!msout && !(in_ephemeral.pub == src_entr.outputs[src_entr.real_output].second.dest) )
{
LOG_ERROR("derived public key mismatch with output public key at index " << idx << ", real out " << src_entr.real_output << "! "<< ENDL << "derived_key:"
<< string_tools::pod_to_hex(in_ephemeral.pub) << ENDL << "real output_public_key:"

6
src/cryptonote_core/cryptonote_tx_utils.h
View File

@ -64,6 +64,7 @@ namespace cryptonote
FIELD(amount)
FIELD(rct)
FIELD(mask)
FIELD(multisig_kLRki)
if (real_output >= outputs.size())
return false;
@ -100,7 +101,7 @@ namespace cryptonote
}
BOOST_CLASS_VERSION(cryptonote::tx_source_entry, 0)
BOOST_CLASS_VERSION(cryptonote::tx_source_entry, 1)
BOOST_CLASS_VERSION(cryptonote::tx_destination_entry, 1)
namespace boost
@ -117,7 +118,10 @@ namespace boost
a & x.amount;
a & x.rct;
a & x.mask;
if (ver < 1)
return;
a & x.multisig_kLRki;
a & x.real_out_additional_tx_keys;
}
template <class Archive>

28
src/multisig/multisig.cpp
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@ -41,21 +41,6 @@ using namespace std;
namespace cryptonote
{
//-----------------------------------------------------------------
bool generate_key_image_helper_old(const account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, keypair& in_ephemeral, crypto::key_image& ki)
{
crypto::key_derivation recv_derivation = AUTO_VAL_INIT(recv_derivation);
bool r = crypto::generate_key_derivation(tx_public_key, ack.m_view_secret_key, recv_derivation);
CHECK_AND_ASSERT_MES(r, false, "key image helper: failed to generate_key_derivation(" << tx_public_key << ", " << ack.m_view_secret_key << ")");
r = crypto::derive_public_key(recv_derivation, real_output_index, ack.m_account_address.m_spend_public_key, in_ephemeral.pub);
CHECK_AND_ASSERT_MES(r, false, "key image helper: failed to derive_public_key(" << recv_derivation << ", " << real_output_index << ", " << ack.m_account_address.m_spend_public_key << ")");
crypto::derive_secret_key(recv_derivation, real_output_index, ack.m_spend_secret_key, in_ephemeral.sec);
crypto::generate_key_image(in_ephemeral.pub, in_ephemeral.sec, ki);
return true;
}
//-----------------------------------------------------------------
void generate_multisig_N_N(const account_keys &keys, const std::vector<crypto::public_key> &spend_keys, std::vector<crypto::secret_key> &multisig_keys, rct::key &spend_skey, rct::key &spend_pkey)
{
@ -107,14 +92,11 @@ namespace cryptonote
return rct::rct2pk(spend_public_key);
}
//-----------------------------------------------------------------
bool generate_multisig_key_image(const account_keys &keys, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki, size_t multisig_key_index)
bool generate_multisig_key_image(const account_keys &keys, size_t multisig_key_index, const crypto::public_key& out_key, crypto::key_image& ki)
{
if (multisig_key_index >= keys.m_multisig_keys.size())
return false;
if (!cryptonote::generate_key_image_helper_old(keys, tx_public_key, real_output_index, in_ephemeral, ki))
return false;
// we got the ephemeral keypair, but the key image isn't right as it's done as per our private spend key, which is multisig
crypto::generate_key_image(in_ephemeral.pub, keys.m_multisig_keys[multisig_key_index], ki);
crypto::generate_key_image(out_key, keys.m_multisig_keys[multisig_key_index], ki);
return true;
}
//-----------------------------------------------------------------
@ -124,16 +106,16 @@ namespace cryptonote
crypto::generate_key_image(pkey, k, (crypto::key_image&)R);
}
//-----------------------------------------------------------------
bool generate_multisig_composite_key_image(const account_keys &keys, const crypto::public_key &tx_public_key, size_t real_output_index, const std::vector<crypto::key_image> &pkis, crypto::key_image &ki)
bool generate_multisig_composite_key_image(const account_keys &keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, const crypto::public_key& out_key, const crypto::public_key &tx_public_key, const std::vector<crypto::public_key>& additional_tx_public_keys, size_t real_output_index, const std::vector<crypto::key_image> &pkis, crypto::key_image &ki)
{
cryptonote::keypair in_ephemeral;
if (!cryptonote::generate_key_image_helper_old(keys, tx_public_key, real_output_index, in_ephemeral, ki))
if (!cryptonote::generate_key_image_helper(keys, subaddresses, out_key, tx_public_key, additional_tx_public_keys, real_output_index, in_ephemeral, ki))
return false;
std::unordered_set<crypto::key_image> used;
for (size_t m = 0; m < keys.m_multisig_keys.size(); ++m)
{
crypto::key_image pki;
bool r = cryptonote::generate_multisig_key_image(keys, tx_public_key, real_output_index, in_ephemeral, pki, m);
bool r = cryptonote::generate_multisig_key_image(keys, m, out_key, pki);
if (!r)
return false;
used.insert(pki);

6
src/multisig/multisig.h
View File

@ -38,13 +38,11 @@ namespace cryptonote
{
struct account_keys;
bool generate_key_image_helper_old(const account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, keypair& in_ephemeral, crypto::key_image& ki);
void generate_multisig_N_N(const account_keys &keys, const std::vector<crypto::public_key> &spend_keys, std::vector<crypto::secret_key> &multisig_keys, rct::key &spend_skey, rct::key &spend_pkey);
void generate_multisig_N1_N(const account_keys &keys, const std::vector<crypto::public_key> &spend_keys, std::vector<crypto::secret_key> &multisig_keys, rct::key &spend_skey, rct::key &spend_pkey);
crypto::secret_key generate_multisig_view_secret_key(const crypto::secret_key &skey, const std::vector<crypto::secret_key> &skeys);
crypto::public_key generate_multisig_N1_N_spend_public_key(const std::vector<crypto::public_key> &pkeys);
bool generate_multisig_key_image(const account_keys &keys, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki, size_t multisig_key_index);
bool generate_multisig_key_image(const account_keys &keys, size_t multisig_key_index, const crypto::public_key& out_key, crypto::key_image& ki);
void generate_multisig_LR(const crypto::public_key pkey, const crypto::secret_key &k, crypto::public_key &L, crypto::public_key &R);
bool generate_multisig_composite_key_image(const account_keys &keys, const crypto::public_key &tx_public_key, size_t real_output_index, const std::vector<crypto::key_image> &pkis, crypto::key_image &ki);
bool generate_multisig_composite_key_image(const account_keys &keys, const std::unordered_map<crypto::public_key, cryptonote::subaddress_index>& subaddresses, const crypto::public_key& out_key, const crypto::public_key &tx_public_key, const std::vector<crypto::public_key>& additional_tx_public_keys, size_t real_output_index, const std::vector<crypto::key_image> &pkis, crypto::key_image &ki);
}

42
src/wallet/wallet2.cpp
View File

@ -527,18 +527,6 @@ uint8_t get_bulletproof_fork(bool testnet)
return 255; // TODO
}
bool wallet_generate_key_image_helper_old(const cryptonote::account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki, bool multisig_export = false)
{
if (!cryptonote::generate_key_image_helper_old(ack, tx_public_key, real_output_index, in_ephemeral, ki))
return false;
if (multisig_export)
{
// we got the ephemeral keypair, but the key image isn't right as it's done as per our private spend key, which is multisig
crypto::generate_key_image(in_ephemeral.pub, ack.m_spend_secret_key, ki);
}
return true;
}
crypto::hash8 get_short_payment_id(const tools::wallet2::pending_tx &ptx)
{
crypto::hash8 payment_id8 = null_hash8;
@ -895,26 +883,22 @@ static uint64_t decodeRct(const rct::rctSig & rv, const crypto::key_derivation &
}
}
//----------------------------------------------------------------------------------------------------
bool wallet2::wallet_generate_key_image_helper_export(const cryptonote::account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki, size_t multisig_key_index) const
{
THROW_WALLET_EXCEPTION_IF(multisig_key_index >= ack.m_multisig_keys.size(), error::wallet_internal_error, "Bad multisig_key_index");
return cryptonote::generate_multisig_key_image(ack, tx_public_key, real_output_index, in_ephemeral, ki, multisig_key_index);
}
//----------------------------------------------------------------------------------------------------
void wallet2::scan_output(const cryptonote::account_keys &keys, const cryptonote::transaction &tx, const crypto::public_key &tx_pub_key, size_t i, tx_scan_info_t &tx_scan_info, int &num_vouts_received, std::unordered_map<cryptonote::subaddress_index, uint64_t> &tx_money_got_in_outs, std::vector<size_t> &outs)
{
bool r;
THROW_WALLET_EXCEPTION_IF(i >= tx.vout.size(), error::wallet_internal_error, "Invalid vout index");
if (m_multisig)
{
r = wallet_generate_key_image_helper_old(keys, tx_pub_key, i, tx_scan_info.in_ephemeral, tx_scan_info.ki);
tx_scan_info.in_ephemeral.pub = boost::get<cryptonote::txout_to_key>(tx.vout[i].target).key;
tx_scan_info.in_ephemeral.sec = crypto::null_skey;
tx_scan_info.ki = rct::rct2ki(rct::zero());
}
else
{
r = cryptonote::generate_key_image_helper_precomp(keys, boost::get<cryptonote::txout_to_key>(tx.vout[i].target).key, tx_scan_info.received->derivation, i, tx_scan_info.received->index, tx_scan_info.in_ephemeral, tx_scan_info.ki);
bool r = cryptonote::generate_key_image_helper_precomp(keys, boost::get<cryptonote::txout_to_key>(tx.vout[i].target).key, tx_scan_info.received->derivation, i, tx_scan_info.received->index, tx_scan_info.in_ephemeral, tx_scan_info.ki);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key image");
THROW_WALLET_EXCEPTION_IF(tx_scan_info.in_ephemeral.pub != boost::get<cryptonote::txout_to_key>(tx.vout[i].target).key,
error::wallet_internal_error, "key_image generated ephemeral public key not matched with output_key");
}
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key image");
THROW_WALLET_EXCEPTION_IF(tx_scan_info.in_ephemeral.pub != boost::get<cryptonote::txout_to_key>(tx.vout[i].target).key,
error::wallet_internal_error, "key_image generated ephemeral public key not matched with output_key");
outs.push_back(i);
if (tx_scan_info.money_transfered == 0)
@ -8373,13 +8357,14 @@ crypto::key_image wallet2::get_multisig_composite_key_image(size_t n) const
CHECK_AND_ASSERT_THROW_MES(n < m_transfers.size(), "Bad output index");
const transfer_details &td = m_transfers[n];
crypto::public_key tx_key = get_tx_pub_key_from_received_outs(td);
const crypto::public_key tx_key = get_tx_pub_key_from_received_outs(td);
const std::vector<crypto::public_key> additional_tx_keys = cryptonote::get_additional_tx_pub_keys_from_extra(td.m_tx);
crypto::key_image ki;
std::vector<crypto::key_image> pkis;
for (const auto &info: td.m_multisig_info)
for (const auto &pki: info.m_partial_key_images)
pkis.push_back(pki);
bool r = cryptonote::generate_multisig_composite_key_image(get_account().get_keys(), tx_key, td.m_internal_output_index, pkis, ki);
bool r = cryptonote::generate_multisig_composite_key_image(get_account().get_keys(), m_subaddresses, td.get_public_key(), tx_key, additional_tx_keys, td.m_internal_output_index, pkis, ki);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key image");
return ki;
}
@ -8394,8 +8379,7 @@ std::vector<tools::wallet2::multisig_info> wallet2::export_multisig()
for (size_t n = 0; n < m_transfers.size(); ++n)
{
transfer_details &td = m_transfers[n];
crypto::public_key tx_key = get_tx_pub_key_from_received_outs(td);
cryptonote::keypair in_ephemeral;
const std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(td.m_tx);
crypto::key_image ki;
td.m_multisig_k.clear();
info[n].m_LR.clear();
@ -8404,7 +8388,7 @@ std::vector<tools::wallet2::multisig_info> wallet2::export_multisig()
for (size_t m = 0; m < get_account().get_multisig_keys().size(); ++m)
{
// we want to export the partial key image, not the full one, so we can't use td.m_key_image
bool r = wallet_generate_key_image_helper_export(get_account().get_keys(), tx_key, td.m_internal_output_index, in_ephemeral, ki, m);
bool r = generate_multisig_key_image(get_account().get_keys(), m, td.get_public_key(), ki);
CHECK_AND_ASSERT_THROW_MES(r, "Failed to generate key image");
info[n].m_partial_key_images.push_back(ki);
}

1
src/wallet/wallet2.h
View File

@ -977,7 +977,6 @@ namespace tools
void set_unspent(size_t idx);
void get_outs(std::vector<std::vector<get_outs_entry>> &outs, const std::vector<size_t> &selected_transfers, size_t fake_outputs_count);
bool tx_add_fake_output(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, uint64_t global_index, const crypto::public_key& tx_public_key, const rct::key& mask, uint64_t real_index, bool unlocked) const;
bool wallet_generate_key_image_helper_export(const cryptonote::account_keys& ack, const crypto::public_key& tx_public_key, size_t real_output_index, cryptonote::keypair& in_ephemeral, crypto::key_image& ki, size_t multisig_key_index) const;
crypto::public_key get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const;
bool should_pick_a_second_output(bool use_rct, size_t n_transfers, const std::vector<size_t> &unused_transfers_indices, const std::vector<size_t> &unused_dust_indices) const;
std::vector<size_t> get_only_rct(const std::vector<size_t> &unused_dust_indices, const std::vector<size_t> &unused_transfers_indices) const;

18
tests/core_tests/multisig.cpp
View File

@ -132,8 +132,14 @@ bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry
std::vector<std::vector<crypto::public_key>> account_L(total);
std::vector<std::vector<crypto::public_key>> account_R(total);
std::vector<std::vector<crypto::key_image>> account_ki(total);
std::vector<crypto::public_key> additional_tx_keys;
std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
subaddresses[miner_account[0].get_keys().m_account_address.m_spend_public_key] = {0,0};
for (size_t msidx = 0; msidx < total; ++msidx)
{
CHECK_AND_ASSERT_MES(miner_account[msidx].get_keys().m_account_address.m_spend_public_key == miner_account[0].get_keys().m_account_address.m_spend_public_key,
false, "Mismatched spend public keys");
size_t nlr = threshold < total ? threshold - 1 : 1;
account_L[msidx].resize(nlr);
account_R[msidx].resize(nlr);
@ -146,7 +152,7 @@ bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry
account_ki[msidx].resize(numki);
for (size_t kiidx = 0; kiidx < numki; ++kiidx)
{
r = cryptonote::generate_multisig_key_image(miner_account[msidx].get_keys(), tx_pub_key, 0, in_ephemeral, account_ki[msidx][kiidx], kiidx);
r = cryptonote::generate_multisig_key_image(miner_account[msidx].get_keys(), kiidx, output_pub_key, account_ki[msidx][kiidx]);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate multisig export key image");
}
MDEBUG("Party " << msidx << ":");
@ -200,7 +206,7 @@ bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry
for (size_t msidx = 0; msidx < total; ++msidx)
for (size_t n = 0; n < account_ki[msidx].size(); ++n)
pkis.push_back(account_ki[msidx][n]);
r = cryptonote::generate_multisig_composite_key_image(miner_account[0].get_keys(), tx_pub_key, 0, pkis, (crypto::key_image&)kLRki.ki);
r = cryptonote::generate_multisig_composite_key_image(miner_account[0].get_keys(), subaddresses, output_pub_key, tx_pub_key, additional_tx_keys, 0, pkis, (crypto::key_image&)kLRki.ki);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate composite key image");
MDEBUG("composite ki: " << kLRki.ki);
MDEBUG("L: " << kLRki.L);
@ -208,7 +214,7 @@ bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry
for (size_t n = 1; n < total; ++n)
{
rct::key ki;
r = cryptonote::generate_multisig_composite_key_image(miner_account[n].get_keys(), tx_pub_key, 0, pkis, (crypto::key_image&)ki);
r = cryptonote::generate_multisig_composite_key_image(miner_account[n].get_keys(), subaddresses, output_pub_key, tx_pub_key, additional_tx_keys, 0, pkis, (crypto::key_image&)ki);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate composite key image");
CHECK_AND_ASSERT_MES(kLRki.ki == ki, false, "Composite key images do not match");
}
@ -254,10 +260,8 @@ bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry
rct::multisig_out msout;
rct::multisig_out *msoutp = &msout;
#endif
std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
subaddresses[miner_account[creator].get_keys().m_account_address.m_spend_public_key] = {0,0};
std::vector<crypto::secret_key> additional_tx_keys;
r = construct_tx_and_get_tx_key(miner_account[creator].get_keys(), subaddresses, sources, destinations, boost::none, std::vector<uint8_t>(), tx, 0, tx_key, additional_tx_keys, true, false, msoutp);
std::vector<crypto::secret_key> additional_tx_secret_keys;
r = construct_tx_and_get_tx_key(miner_account[creator].get_keys(), subaddresses, sources, destinations, boost::none, std::vector<uint8_t>(), tx, 0, tx_key, additional_tx_secret_keys, true, false, msoutp);
CHECK_AND_ASSERT_MES(r, false, "failed to construct transaction");
#ifndef NO_MULTISIG