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monero/tests/core_tests/rct.cpp
binaryFate 1f2930ce0b Update 2019 copyright
2019-03-05 22:05:34 +01:00

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// Copyright (c) 2014-2019, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include "ringct/rctSigs.h"
#include "chaingen.h"
#include "rct.h"
#include "device/device.hpp"
using namespace epee;
using namespace crypto;
using namespace cryptonote;
//----------------------------------------------------------------------------------------------------------------------
// Tests
bool gen_rct_tx_validation_base::generate_with(std::vector<test_event_entry>& events,
const int *out_idx, int mixin, uint64_t amount_paid, bool valid,
const std::function<void(std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations)> &pre_tx,
const std::function<void(transaction &tx)> &post_tx) const
{
uint64_t ts_start = 1338224400;
GENERATE_ACCOUNT(miner_account);
MAKE_GENESIS_BLOCK(events, blk_0, miner_account, ts_start);
// create 4 miner accounts, and have them mine the next 4 blocks
cryptonote::account_base miner_accounts[4];
const cryptonote::block *prev_block = &blk_0;
cryptonote::block blocks[4];
for (size_t n = 0; n < 4; ++n) {
miner_accounts[n].generate();
CHECK_AND_ASSERT_MES(generator.construct_block_manually(blocks[n], *prev_block, miner_accounts[n],
test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_hf_version,
2, 2, prev_block->timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 0, 2),
false, "Failed to generate block");
events.push_back(blocks[n]);
prev_block = blocks + n;
LOG_PRINT_L0("Initial miner tx " << n << ": " << obj_to_json_str(blocks[n].miner_tx));
}
// rewind
cryptonote::block blk_r, blk_last;
{
blk_last = blocks[3];
for (size_t i = 0; i < CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW; ++i)
{
cryptonote::block blk;
CHECK_AND_ASSERT_MES(generator.construct_block_manually(blk, blk_last, miner_account,
test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_hf_version,
2, 2, blk_last.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 0, 2),
false, "Failed to generate block");
events.push_back(blk);
blk_last = blk;
}
blk_r = blk_last;
}
// create 4 txes from these miners in another block, to generate some rct outputs
transaction rct_txes[4];
rct::key rct_tx_masks[16];
cryptonote::block blk_txes[4];
for (size_t n = 0; n < 4; ++n)
{
std::vector<crypto::hash> starting_rct_tx_hashes;
std::vector<tx_source_entry> sources;
sources.resize(1);
tx_source_entry& src = sources.back();
const size_t index_in_tx = 5;
src.amount = 30000000000000;
for (int m = 0; m < 4; ++m) {
src.push_output(m, boost::get<txout_to_key>(blocks[m].miner_tx.vout[index_in_tx].target).key, src.amount);
}
src.real_out_tx_key = cryptonote::get_tx_pub_key_from_extra(blocks[n].miner_tx);
src.real_output = n;
src.real_output_in_tx_index = index_in_tx;
src.mask = rct::identity();
src.rct = false;
//fill outputs entry
tx_destination_entry td;
td.addr = miner_accounts[n].get_keys().m_account_address;
td.amount = 7390000000000;
std::vector<tx_destination_entry> destinations;
destinations.push_back(td);
destinations.push_back(td);
destinations.push_back(td);
destinations.push_back(td); // 30 -> 7.39 * 4
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
subaddresses[miner_accounts[n].get_keys().m_account_address.m_spend_public_key] = {0,0};
bool r = construct_tx_and_get_tx_key(miner_accounts[n].get_keys(), subaddresses, sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), rct_txes[n], 0, tx_key, additional_tx_keys, true);
CHECK_AND_ASSERT_MES(r, false, "failed to construct transaction");
events.push_back(rct_txes[n]);
starting_rct_tx_hashes.push_back(get_transaction_hash(rct_txes[n]));
for (size_t o = 0; o < 4; ++o)
{
crypto::key_derivation derivation;
bool r = crypto::generate_key_derivation(destinations[o].addr.m_view_public_key, tx_key, derivation);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate key derivation");
crypto::secret_key amount_key;
crypto::derivation_to_scalar(derivation, o, amount_key);
const uint8_t type = rct_txes[n].rct_signatures.type;
if (type == rct::RCTTypeSimple || type == rct::RCTTypeBulletproof || type == rct::RCTTypeBulletproof2)
rct::decodeRctSimple(rct_txes[n].rct_signatures, rct::sk2rct(amount_key), o, rct_tx_masks[o+n*4], hw::get_device("default"));
else
rct::decodeRct(rct_txes[n].rct_signatures, rct::sk2rct(amount_key), o, rct_tx_masks[o+n*4], hw::get_device("default"));
}
CHECK_AND_ASSERT_MES(generator.construct_block_manually(blk_txes[n], blk_last, miner_account,
test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_tx_hashes | test_generator::bf_hf_version | test_generator::bf_max_outs,
4, 4, blk_last.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
crypto::hash(), 0, transaction(), starting_rct_tx_hashes, 0, 6, 4),
false, "Failed to generate block");
events.push_back(blk_txes[n]);
blk_last = blk_txes[n];
}
// rewind
{
for (size_t i = 0; i < CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW; ++i)
{
cryptonote::block blk;
CHECK_AND_ASSERT_MES(generator.construct_block_manually(blk, blk_last, miner_account,
test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_hf_version | test_generator::bf_max_outs,
4, 4, blk_last.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 6, 4),
false, "Failed to generate block");
events.push_back(blk);
blk_last = blk;
}
blk_r = blk_last;
}
// create a tx from the requested ouputs
std::vector<tx_source_entry> sources;
size_t global_rct_idx = 6; // skip first coinbase (6 outputs)
size_t rct_idx = 0;
size_t pre_rct_idx = 0;
for (size_t out_idx_idx = 0; out_idx[out_idx_idx] >= 0; ++out_idx_idx) {
sources.resize(sources.size()+1);
tx_source_entry& src = sources.back();
src.real_output = 0;
if (out_idx[out_idx_idx]) {
// rct
src.amount = 7390000000000;
src.real_out_tx_key = get_tx_pub_key_from_extra(rct_txes[rct_idx/4]);
src.real_output_in_tx_index = rct_idx&3;
src.mask = rct_tx_masks[rct_idx];
src.rct = true;
for (int m = 0; m <= mixin; ++m) {
rct::ctkey ctkey;
ctkey.dest = rct::pk2rct(boost::get<txout_to_key>(rct_txes[rct_idx/4].vout[rct_idx&3].target).key);
ctkey.mask = rct_txes[rct_idx/4].rct_signatures.outPk[rct_idx&3].mask;
src.outputs.push_back(std::make_pair(global_rct_idx, ctkey));
++rct_idx;
++global_rct_idx;
if (global_rct_idx % 10 == 0)
global_rct_idx += 6; // skip the coinbase
}
}
else
{
// pre rct
src.amount = 5000000000000;
src.real_out_tx_key = cryptonote::get_tx_pub_key_from_extra(blocks[pre_rct_idx].miner_tx);
src.real_output_in_tx_index = 4;
src.mask = rct::identity();
src.rct = false;
for (int m = 0; m <= mixin; ++m) {
src.push_output(m, boost::get<txout_to_key>(blocks[pre_rct_idx].miner_tx.vout[4].target).key, src.amount);
++pre_rct_idx;
}
}
}
//fill outputs entry
tx_destination_entry td;
td.addr = miner_account.get_keys().m_account_address;
td.amount = amount_paid;
std::vector<tx_destination_entry> destinations;
destinations.push_back(td);
if (pre_tx)
pre_tx(sources, destinations);
transaction tx;
crypto::secret_key tx_key;
std::vector<crypto::secret_key> additional_tx_keys;
std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
subaddresses[miner_accounts[0].get_keys().m_account_address.m_spend_public_key] = {0,0};
bool r = construct_tx_and_get_tx_key(miner_accounts[0].get_keys(), subaddresses, sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), tx, 0, tx_key, additional_tx_keys, true);
CHECK_AND_ASSERT_MES(r, false, "failed to construct transaction");
if (post_tx)
post_tx(tx);
if (!valid)
DO_CALLBACK(events, "mark_invalid_tx");
events.push_back(tx);
LOG_PRINT_L0("Test tx: " << obj_to_json_str(tx));
return true;
}
bool gen_rct_tx_valid_from_pre_rct::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, true, NULL, NULL);
}
bool gen_rct_tx_valid_from_rct::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, true, NULL, NULL);
}
bool gen_rct_tx_valid_from_mixed::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, 0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, true, NULL, NULL);
}
bool gen_rct_tx_pre_rct_bad_real_dest::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
bool tx_creation_succeeded = false;
// in the case, the tx will fail to create, due to mismatched sk/pk
bool ret = generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {rct::key sk; rct::skpkGen(sk, sources[0].outputs[0].second.dest);},
[&tx_creation_succeeded](const transaction &tx){tx_creation_succeeded=true;});
return !ret && !tx_creation_succeeded;
}
bool gen_rct_tx_pre_rct_bad_real_mask::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {sources[0].outputs[0].second.mask = rct::zeroCommit(99999);},
NULL);
}
bool gen_rct_tx_pre_rct_bad_fake_dest::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {rct::key sk; rct::skpkGen(sk, sources[0].outputs[1].second.dest);},
NULL);
}
bool gen_rct_tx_pre_rct_bad_fake_mask::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {sources[0].outputs[1].second.mask = rct::zeroCommit(99999);},
NULL);
}
bool gen_rct_tx_rct_bad_real_dest::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
bool tx_creation_succeeded = false;
// in the case, the tx will fail to create, due to mismatched sk/pk
bool ret = generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {rct::key sk; rct::skpkGen(sk, sources[0].outputs[0].second.dest);},
[&tx_creation_succeeded](const transaction &tx){tx_creation_succeeded=true;});
return !ret && !tx_creation_succeeded;
}
bool gen_rct_tx_rct_bad_real_mask::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {sources[0].outputs[0].second.mask = rct::zeroCommit(99999);},
NULL);
}
bool gen_rct_tx_rct_bad_fake_dest::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {rct::key sk; rct::skpkGen(sk, sources[0].outputs[1].second.dest);},
NULL);
}
bool gen_rct_tx_rct_bad_fake_mask::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {sources[0].outputs[1].second.mask = rct::zeroCommit(99999);},
NULL);
}
bool gen_rct_tx_rct_spend_with_zero_commit::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
[](std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations) {sources[0].outputs[0].second.mask = rct::zeroCommit(sources[0].amount); sources[0].mask = rct::identity();},
[](transaction &tx){boost::get<txin_to_key>(tx.vin[0]).amount = 0;});
}
bool gen_rct_tx_pre_rct_zero_vin_amount::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {boost::get<txin_to_key>(tx.vin[0]).amount = 0;});
}
bool gen_rct_tx_rct_non_zero_vin_amount::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {boost::get<txin_to_key>(tx.vin[0]).amount = 5000000000000;}); // one that we know exists
}
bool gen_rct_tx_non_zero_vout_amount::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.vout[0].amount = 5000000000000;}); // one that we know exists
}
bool gen_rct_tx_pre_rct_duplicate_key_image::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [&events](transaction &tx) {boost::get<txin_to_key>(tx.vin[0]).k_image = boost::get<txin_to_key>(boost::get<transaction>(events[67]).vin[0]).k_image;});
}
bool gen_rct_tx_rct_duplicate_key_image::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [&events](transaction &tx) {boost::get<txin_to_key>(tx.vin[0]).k_image = boost::get<txin_to_key>(boost::get<transaction>(events[67]).vin[0]).k_image;});
}
bool gen_rct_tx_pre_rct_wrong_key_image::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
// some random key image from the monero blockchain, so we get something that is a valid key image
static const uint8_t k_image[33] = "\x49\x3b\x56\x16\x54\x76\xa8\x75\xb7\xf4\xa8\x51\xf5\x55\xd3\x44\xe7\x3e\xea\x73\xee\xc1\x06\x7c\x7d\xb6\x57\x28\x46\x85\xe1\x07";
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {memcpy(&boost::get<txin_to_key>(tx.vin[0]).k_image, k_image, 32);});
}
bool gen_rct_tx_rct_wrong_key_image::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
// some random key image from the monero blockchain, so we get something that is a valid key image
static const uint8_t k_image[33] = "\x49\x3b\x56\x16\x54\x76\xa8\x75\xb7\xf4\xa8\x51\xf5\x55\xd3\x44\xe7\x3e\xea\x73\xee\xc1\x06\x7c\x7d\xb6\x57\x28\x46\x85\xe1\x07";
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {memcpy(&boost::get<txin_to_key>(tx.vin[0]).k_image, k_image, 32);});
}
bool gen_rct_tx_pre_rct_wrong_fee::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.rct_signatures.txnFee++;});
}
bool gen_rct_tx_rct_wrong_fee::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.rct_signatures.txnFee++;});
}
bool gen_rct_tx_pre_rct_increase_vin_and_fee::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {boost::get<txin_to_key>(tx.vin[0]).amount++;tx.rct_signatures.txnFee++;});
}
bool gen_rct_tx_pre_rct_remove_vin::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.vin.pop_back();});
}
bool gen_rct_tx_rct_remove_vin::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.vin.pop_back();});
}
bool gen_rct_tx_pre_rct_add_vout::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.vout.push_back(tx.vout.back());});
}
bool gen_rct_tx_rct_add_vout::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [](transaction &tx) {tx.vout.push_back(tx.vout.back());});
}
bool gen_rct_tx_pre_rct_altered_extra::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {0, -1};
const uint64_t amount_paid = 10000;
bool failed = false;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [&failed](transaction &tx) {std::string extra_nonce; crypto::hash pid = crypto::null_hash; set_payment_id_to_tx_extra_nonce(extra_nonce, pid); if (!add_extra_nonce_to_tx_extra(tx.extra, extra_nonce)) failed = true; }) && !failed;
}
bool gen_rct_tx_rct_altered_extra::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 2;
const int out_idx[] = {1, -1};
const uint64_t amount_paid = 10000;
bool failed = false;
return generate_with(events, out_idx, mixin, amount_paid, false,
NULL, [&failed](transaction &tx) {std::string extra_nonce; crypto::hash pid = crypto::null_hash; set_payment_id_to_tx_extra_nonce(extra_nonce, pid); if (!add_extra_nonce_to_tx_extra(tx.extra, extra_nonce)) failed = true; }) && !failed;
}
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