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When RingCT is enabled, outputs from coinbase transactions are created as a single output, and stored as RingCT output, with a fake mask. Their amount is not hidden on the blockchain itself, but they are then able to be used as fake inputs in a RingCT ring. Since the output amounts are hidden, their "dustiness" is not an obstacle anymore to mixing, and this makes the coinbase transactions a lot smaller, as well as helping the TXO set to grow more slowly. Also add a new "Null" type of rct signature, which decreases the size required when no signatures are to be stored, as in a coinbase tx.
154 lines
6.3 KiB
C++
154 lines
6.3 KiB
C++
// Copyright (c) 2014-2016, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include "include_base_utils.h"
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using namespace epee;
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#include "wallet/wallet2.h"
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using namespace cryptonote;
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/*
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bool transactions_generation_from_blockchain(std::string& blockchain_folder_path)
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{
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string_tools::parse_hexstr_to_binbuff()
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tx_memory_pool pool;
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blockchain_storage bchs(pool);
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bool r = bchs.init(blockchain_folder_path);
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CHECK_AND_ASSERT_MES(r, false, "failed to load blockchain");
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//amount = 3000000000000
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//key_offsets = 1,2,3,4,5,10,12,27,31,33,34
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//
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}
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tx_source_entry::output_entry make_outptu_entr_for_gindex(size_t i, std::map<crypto::hash, transaction>& txs, std::vector<std::pair<crypto::hash, size_t> >& v)
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{
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tx_source_entry::output_entry oe;
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oe = i;
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oe.second = txs[v[i].first].boost::get<txout_to_key>(vout[v[i].second].target).key;
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return oe;
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}
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bool make_tx(blockchain_storage& bch)
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{
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std::map<crypto::hash, transaction> txs;
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std::vector<std::pair<crypto::hash, size_t> > v;
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bch.get_outs_for_amounts(3000000000000, v);
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std::vector<tx_source_entry> sources(11);
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sources[0].amount = 3000000000000;
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(1, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(2, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(3, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(4, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(5, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(10, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(12, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(27, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(31, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(33, txs, v));
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sources[0].outputs.push_back(make_outptu_entr_for_gindex(34, txs, v));
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sources[0].real_out_tx_key =
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BOOST_FOREACH(transfer_container::iterator it, selected_transfers)
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{
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sources.resize(sources.size()+1);
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cryptonote::tx_source_entry& src = sources.back();
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transfer_details& td = *it;
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src.amount = td.m_tx.vout[td.m_internal_output_index].amount;
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//paste mixin transaction
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if(daemon_resp.outs.size())
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{
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daemon_resp.outs[i].outs.sort([](const out_entry& a, const out_entry& b){return a.global_amount_index < b.global_amount_index;});
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BOOST_FOREACH(out_entry& daemon_oe, daemon_resp.outs[i].outs)
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{
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if(td.m_global_output_index == daemon_oe.global_amount_index)
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continue;
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tx_output_entry oe;
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oe.first = daemon_oe.global_amount_index;
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oe.second = daemon_oe.out_key;
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src.outputs.push_back(oe);
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if(src.outputs.size() >= fake_outputs_count)
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break;
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}
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}
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//paste real transaction to the random index
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auto it_to_insert = std::find_if(src.outputs.begin(), src.outputs.end(), [&](const tx_output_entry& a)
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{
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return a.first >= td.m_global_output_index;
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});
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//size_t real_index = src.outputs.size() ? (rand() % src.outputs.size() ):0;
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tx_output_entry real_oe;
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real_oe.first = td.m_global_output_index;
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real_oe.second = boost::get<txout_to_key>(td.m_tx.vout[td.m_internal_output_index].target).key;
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auto interted_it = src.outputs.insert(it_to_insert, real_oe);
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src.real_out_tx_key = td.m_tx.tx_pub_key;
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src.real_output = interted_it - src.outputs.begin();
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src.real_output_in_tx_index = td.m_internal_output_index;
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src.rct = false;
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++i;
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}
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if(found_money != needed_money)
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{
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//lets make last output to odd money
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dsts.resize(dsts.size()+1);
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cryptonote::tx_destination_entry& destination = dsts.back();
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CHECK_AND_ASSERT_MES(found_money > needed_money, false, "internal error found_money=" << found_money << " !> needed_money=" << needed_money);
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destination.amount = found_money - needed_money;
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}
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transaction tx;
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bool r = cryptonote::construct_tx(m_account.get_keys(), sources, dsts, tx, unlock_time);
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if(!r)
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{
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std::cout << "transaction construction failed" << std::endl;
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}
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COMMAND_RPC_SEND_RAW_TX::request req;
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req.tx_as_hex = epee::string_tools::buff_to_hex_nodelimer(tx_to_blob(tx));
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COMMAND_RPC_SEND_RAW_TX::response daemon_send_resp;
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r = net_utils::http::invoke_http_json_remote_command(m_daemon_address + "/sendrawtransaction", req, daemon_send_resp, m_http_client);
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CHECK_AND_ASSERT_MES(r, false, "failed to send transaction");
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if(daemon_send_resp.status != CORE_RPC_STATUS_OK)
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{
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std::cout << "daemon failed to accept generated transaction" << ENDL;
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return false;
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}
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std::cout << "transaction generated ok and sent to daemon" << std::endl;
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BOOST_FOREACH(transfer_container::iterator it, selected_transfers)
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it->m_spent = true;
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return true;
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}*/
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