Some Random Crypto Guy
6787d1d018
1. The CONVERT TX is creating the necessary information. 2. The PROTOCOL TX is creating the necessary information. 3. The wallet recognises the subaddress (kind of) on incoming amounts. At present, the PROTOCOL TX outputs are NOT spendable or included in balances.
1171 lines
50 KiB
C++
1171 lines
50 KiB
C++
// Copyright (c) 2014-2022, 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 <unordered_set>
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#include <random>
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#include "include_base_utils.h"
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#include "string_tools.h"
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using namespace epee;
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#include "common/apply_permutation.h"
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#include "cryptonote_tx_utils.h"
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#include "cryptonote_config.h"
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#include "blockchain.h"
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#include "cryptonote_basic/miner.h"
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#include "cryptonote_basic/tx_extra.h"
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#include "crypto/crypto.h"
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#include "crypto/hash.h"
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#include "ringct/rctSigs.h"
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#include "oracle/asset_types.h"
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using namespace crypto;
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namespace cryptonote
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{
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rct::key sm(rct::key y, int n, const rct::key &x)
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{
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while (n--)
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sc_mul(y.bytes, y.bytes, y.bytes);
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sc_mul(y.bytes, y.bytes, x.bytes);
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return y;
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}
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// Compute the inverse of a scalar, the clever way
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rct::key invert(const rct::key &x)
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{
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rct::key _1, _10, _100, _11, _101, _111, _1001, _1011, _1111;
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_1 = x;
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sc_mul(_10.bytes, _1.bytes, _1.bytes);
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sc_mul(_100.bytes, _10.bytes, _10.bytes);
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sc_mul(_11.bytes, _10.bytes, _1.bytes);
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sc_mul(_101.bytes, _10.bytes, _11.bytes);
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sc_mul(_111.bytes, _10.bytes, _101.bytes);
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sc_mul(_1001.bytes, _10.bytes, _111.bytes);
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sc_mul(_1011.bytes, _10.bytes, _1001.bytes);
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sc_mul(_1111.bytes, _100.bytes, _1011.bytes);
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rct::key inv;
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sc_mul(inv.bytes, _1111.bytes, _1.bytes);
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inv = sm(inv, 123 + 3, _101);
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inv = sm(inv, 2 + 2, _11);
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inv = sm(inv, 1 + 4, _1111);
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inv = sm(inv, 1 + 4, _1111);
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inv = sm(inv, 4, _1001);
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inv = sm(inv, 2, _11);
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inv = sm(inv, 1 + 4, _1111);
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inv = sm(inv, 1 + 3, _101);
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inv = sm(inv, 3 + 3, _101);
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inv = sm(inv, 3, _111);
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inv = sm(inv, 1 + 4, _1111);
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inv = sm(inv, 2 + 3, _111);
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inv = sm(inv, 2 + 2, _11);
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inv = sm(inv, 1 + 4, _1011);
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inv = sm(inv, 2 + 4, _1011);
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inv = sm(inv, 6 + 4, _1001);
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inv = sm(inv, 2 + 2, _11);
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inv = sm(inv, 3 + 2, _11);
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inv = sm(inv, 3 + 2, _11);
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inv = sm(inv, 1 + 4, _1001);
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inv = sm(inv, 1 + 3, _111);
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inv = sm(inv, 2 + 4, _1111);
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inv = sm(inv, 1 + 4, _1011);
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inv = sm(inv, 3, _101);
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inv = sm(inv, 2 + 4, _1111);
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inv = sm(inv, 3, _101);
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inv = sm(inv, 1 + 2, _11);
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// Sanity check for successful inversion
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rct::key tmp;
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sc_mul(tmp.bytes, inv.bytes, x.bytes);
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CHECK_AND_ASSERT_THROW_MES(tmp == rct::identity(), "invert failed");
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return inv;
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}
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//---------------------------------------------------------------
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void classify_addresses(const std::vector<tx_destination_entry> &destinations, const boost::optional<cryptonote::account_public_address>& change_addr, size_t &num_stdaddresses, size_t &num_subaddresses, account_public_address &single_dest_subaddress)
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{
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num_stdaddresses = 0;
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num_subaddresses = 0;
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std::unordered_set<cryptonote::account_public_address> unique_dst_addresses;
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for(const tx_destination_entry& dst_entr: destinations)
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{
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if (change_addr && dst_entr.addr == change_addr)
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continue;
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if (unique_dst_addresses.count(dst_entr.addr) == 0)
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{
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unique_dst_addresses.insert(dst_entr.addr);
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if (dst_entr.is_subaddress)
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{
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++num_subaddresses;
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single_dest_subaddress = dst_entr.addr;
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}
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else
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{
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++num_stdaddresses;
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}
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}
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}
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LOG_PRINT_L2("destinations include " << num_stdaddresses << " standard addresses and " << num_subaddresses << " subaddresses");
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}
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//---------------------------------------------------------------
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bool get_conversion_rate(const oracle::pricing_record& pr, const std::string& from_asset, const std::string& to_asset, uint64_t& rate) {
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// Check for burns
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if (to_asset == "BURN") {
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LOG_ERROR("Converting to a BURN is nonsensical - aborting");
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rate = std::numeric_limits<uint64_t>::max();
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return false;
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}
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// Check for transfers
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if (from_asset == to_asset) {
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rate = COIN;
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return true;
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}
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if (from_asset == "FULM") {
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// FULM as source
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if (to_asset not_eq "FUSD") {
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// Invalid conversion - abort
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LOG_ERROR("Invalid conversion (" << from_asset << "," << to_asset << ") - aborting");
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return false;
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}
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// Scale to FUSD
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rate = pr["FUSD"];
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} else if (from_asset == "FUSD") {
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// FUSD as source
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if (to_asset not_eq "FULM") {
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// Invalid conversion - abort
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LOG_ERROR("Invalid conversion (" << from_asset << "," << to_asset << ") - aborting");
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return false;
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}
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// Scale to FULM
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boost::multiprecision::uint128_t rate_128 = COIN;
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rate_128 *= COIN;
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rate_128 /= pr["FUSD"];
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rate = rate_128.convert_to<uint64_t>();
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rate -= (rate % 10000);
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}
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return true;
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}
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//---------------------------------------------------------------
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bool get_converted_amount(const uint64_t& conversion_rate, const uint64_t& source_amount, uint64_t& dest_amount) {
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if (!conversion_rate || !source_amount) {
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LOG_ERROR("Invalid conversion rate or input amount for conversion (" << conversion_rate << "," << source_amount << ") - aborting");
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return false;
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}
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boost::multiprecision::uint128_t source_amount_128 = source_amount;
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boost::multiprecision::uint128_t conversion_rate_128 = conversion_rate;
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boost::multiprecision::uint128_t dest_amount_128 = source_amount_128 * conversion_rate_128;
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dest_amount_128 /= COIN;
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dest_amount = dest_amount_128.convert_to<uint64_t>();
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return true;
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}
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//---------------------------------------------------------------
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bool calculate_conversion(const std::string& source_asset, const std::string& dest_asset, const uint64_t amount_burnt, const uint64_t amount_slippage_limit, uint64_t& amount_minted, uint64_t& amount_slippage, const std::map<std::string, uint64_t> circ_supply, const oracle::pricing_record& pr, const uint8_t hf_version) {
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// Sanity check - are the asset types a valid conversion?
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CHECK_AND_ASSERT_MES(source_asset != dest_asset, false, "cannot calculate slippage when source and dest assets are identical");
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CHECK_AND_ASSERT_MES(source_asset != "", false, "source_asset not provided");
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CHECK_AND_ASSERT_MES(dest_asset != "", false, "dest_asset not provided (is this a BURN?)");
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/////CHECK_AND_ASSERT_MES(pr.has_rate(dest_asset), false, "missing rate for " << dest_asset <<" in pricing record - cannot calculate conversion");
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CHECK_AND_ASSERT_MES(circ_supply.count(source_asset) != 0, false, "missing circulating_supply data - cannot calculate slippage");
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// Get the conversion rate for the TX
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uint64_t conversion_rate = COIN;
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bool ok = get_conversion_rate(pr, source_asset, dest_asset, conversion_rate);
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CHECK_AND_ASSERT_MES(ok, false, "Unable to get conversion rate for " << source_asset << " to " << dest_asset);
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// Apply slippage to the burnt amount
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amount_slippage = amount_burnt >> 5; // (1/32)
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if (hf_version >= HF_VERSION_SLIPPAGE_YIELD) {
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// Apply slippage to the burnt amount
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amount_slippage = amount_burnt >> 5; // (1/32)
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// Check that the slippage is acceptable
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if (amount_slippage > amount_slippage_limit) {
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// Bail out with no conversion
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LOG_PRINT_L1("Unable to convert - slippage limit was too low");
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amount_minted = 0;
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return true;
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}
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}
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// Work out the converted amount
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ok = get_converted_amount(conversion_rate, amount_burnt - amount_slippage, amount_minted);
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CHECK_AND_ASSERT_MES(ok, false, "Unable to get converted amount for " << (amount_burnt - amount_slippage) << ", converting from " << source_asset << " to " << dest_asset);
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return true;
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}
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//---------------------------------------------------------------
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bool construct_protocol_tx(const size_t height,
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uint64_t& protocol_fee,
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transaction& tx,
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std::vector<protocol_data_entry>& protocol_data,
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std::map<std::string, uint64_t> circ_supply,
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const oracle::pricing_record& pr,
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const uint8_t hf_version) {
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// A vector to contain all of the additional _tx_secret_keys_
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//std::vector<crypto::secret_key>& additional_tx_keys;
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// Clear the TX contents
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tx.set_null();
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tx.type = cryptonote::transaction_type::PROTOCOL;
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// Force the TX type to 2
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tx.version = 2;
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// Clear the unlock_time
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tx.unlock_time = 0;
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keypair txkey = keypair::generate(hw::get_device("default"));
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add_tx_pub_key_to_extra(tx, txkey.pub);
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if (!sort_tx_extra(tx.extra, tx.extra))
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return false;
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// Update the circulating_supply information, while keeping a count of amount to be created using txin_gen
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std::map<std::string, uint64_t> txin_gen_totals;
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uint64_t txin_gen_final = 0;
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for (auto const& entry: protocol_data) {
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if (!circ_supply.count(entry.source_asset)) {
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LOG_ERROR("Circulating supply does not have " << entry.source_asset << " balance - invalid source_asset");
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return false;
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}
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// Deduct the amount_burnt from the circulating_supply balance
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circ_supply[entry.source_asset] -= entry.amount_burnt;
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}
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// Calculate the slippage for the output amounts
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LOG_PRINT_L2("Creating protocol_tx...");
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std::vector<crypto::public_key> additional_tx_public_keys;
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for (auto const& entry: protocol_data) {
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if (entry.destination_asset == "BURN") {
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// BURN TX - no slippage, no money minted - skip
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continue;
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}
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// CONVERT TX
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// Create a secret TX key (= s)
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crypto::secret_key s = keypair::generate(hw::get_device("default")).sec;
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//additional_tx_keys.push_back(s);
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// Now add the correct TX public key (= sP_change)
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crypto::public_key txkey_pub = rct::rct2pk(rct::scalarmultKey(rct::pk2rct(entry.P_change), rct::sk2rct(s)));
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additional_tx_public_keys.push_back(txkey_pub);
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// Calculate the actual return address, because the field we already have is actually the TX pubkey to use
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// return address = Hs(syF || i)G + P_change = Hs(saP_change || i)G + P_change
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// Generate the uniqueness for the input
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size_t output_index = tx.vout.size();
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crypto::hash uniqueness = cn_fast_hash(&entry.input_k_image.data[0], 32);
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// y = Hs(uniqueness)
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ec_scalar y;
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crypto::hash_to_scalar(&uniqueness, sizeof(crypto::hash), y);
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rct::key key_y = (rct::key&)(y);
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rct::key key_F = (rct::key&)(entry.return_address);
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crypto::public_key yF = rct::rct2pk(rct::scalarmultKey(key_F, key_y));
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crypto::public_key syF = rct::rct2pk(rct::scalarmultKey(rct::scalarmultKey(key_F, key_y), rct::sk2rct(s)));
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crypto::key_derivation derivation_syF = AUTO_VAL_INIT(derivation_syF);
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std::memcpy(derivation_syF.data, syF.data, sizeof(crypto::key_derivation));
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crypto::public_key out_eph_public_key = AUTO_VAL_INIT(out_eph_public_key);
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bool r = crypto::derive_public_key(derivation_syF, output_index, entry.P_change, out_eph_public_key);
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CHECK_AND_ASSERT_MES(r, false, "while creating protocol_tx outs: failed to derive_public_key(" << derivation_syF << ", " << uniqueness << ", "<< entry.P_change << ")");
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// Sanity checks
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crypto::public_key P_change_verify = crypto::null_pkey;
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r = crypto::derive_subaddress_public_key(out_eph_public_key, derivation_syF, output_index, P_change_verify);
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CHECK_AND_ASSERT_MES(r, false, "while creating protocol_tx outs: failed to derive_subaddress_public_key(" << out_eph_public_key << ", " << derivation_syF << ", " << output_index << ", " << P_change_verify << ")");
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LOG_ERROR("*****************************************************************************");
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LOG_ERROR("output_index : " << output_index);
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LOG_ERROR("P_change : " << entry.P_change);
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LOG_ERROR("key_y : " << key_y);
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LOG_ERROR("key_F : " << key_F);
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LOG_ERROR("s : " << s);
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LOG_ERROR("yF : " << yF);
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LOG_ERROR("der. (syF) : " << derivation_syF);
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LOG_ERROR("uniqueness : " << uniqueness);
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LOG_ERROR("txkey_pub : " << txkey_pub);
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LOG_ERROR("output_key : " << out_eph_public_key << " (derivation_syF, output_index, P_change)");
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LOG_ERROR("P_change_ver : " << P_change_verify);
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LOG_ERROR("*****************************************************************************");
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// Now calculate the slippage, and decide if it is going to be converted or refunded
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uint64_t amount_slippage = 0, amount_minted = 0;
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bool ok = cryptonote::calculate_conversion(entry.source_asset, entry.destination_asset, entry.amount_burnt, entry.amount_slippage_limit, amount_minted, amount_slippage, circ_supply, pr, hf_version);
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if (!ok) {
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LOG_ERROR("failed to calculate slippage when trying to build protocol_tx");
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return false;
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}
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if (amount_minted == 0) {
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// REFUND
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LOG_PRINT_L2("Conversion TX refunded - slippage too high");
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txin_gen_totals[entry.source_asset] += entry.amount_burnt;
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// Create the TX output for this refund
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tx_out out;
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cryptonote::set_tx_out(entry.amount_burnt, entry.source_asset, 0, out_eph_public_key, false, crypto::view_tag{}, out);
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tx.vout.push_back(out);
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} else {
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// CONVERTED
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LOG_PRINT_L2("Conversion TX submitted - converted " << entry.amount_burnt << entry.source_asset << " to " << amount_minted << entry.destination_asset << "(slippage " << amount_slippage << ")");
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txin_gen_totals[entry.destination_asset] += amount_minted;
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// Create the TX output for this conversion
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tx_out out;
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cryptonote::set_tx_out(amount_minted, entry.destination_asset, 0, out_eph_public_key, false, crypto::view_tag{}, out);
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tx.vout.push_back(out);
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}
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}
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// Add in all of the additional TX pubkeys we need to process the payments
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add_additional_tx_pub_keys_to_extra(tx.extra, additional_tx_public_keys);
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// TODO: create the YIELD outputs
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// Create the txin_gen now
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txin_gen in;
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in.height = height;
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tx.vin.push_back(in);
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return true;
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}
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//---------------------------------------------------------------
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bool construct_miner_tx(size_t height, size_t median_weight, uint64_t already_generated_coins, size_t current_block_weight, uint64_t fee, const account_public_address &miner_address, transaction& tx, const blobdata& extra_nonce, size_t max_outs, uint8_t hard_fork_version) {
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// Clear the TX contents
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tx.set_null();
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tx.type = cryptonote::transaction_type::MINER;
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keypair txkey = keypair::generate(hw::get_device("default"));
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add_tx_pub_key_to_extra(tx, txkey.pub);
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if(!extra_nonce.empty())
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if(!add_extra_nonce_to_tx_extra(tx.extra, extra_nonce))
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return false;
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if (!sort_tx_extra(tx.extra, tx.extra))
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return false;
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txin_gen in;
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in.height = height;
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uint64_t block_reward;
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if(!get_block_reward(median_weight, current_block_weight, already_generated_coins, block_reward, hard_fork_version))
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{
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LOG_PRINT_L0("Block is too big");
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return false;
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}
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#if defined(DEBUG_CREATE_BLOCK_TEMPLATE)
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LOG_PRINT_L1("Creating block template: reward " << block_reward <<
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", fee " << fee);
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#endif
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block_reward += fee;
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uint64_t summary_amounts = 0;
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CHECK_AND_ASSERT_MES(1 <= max_outs, false, "max_out must be non-zero");
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crypto::key_derivation derivation = AUTO_VAL_INIT(derivation);
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crypto::public_key out_eph_public_key = AUTO_VAL_INIT(out_eph_public_key);
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bool r = crypto::generate_key_derivation(miner_address.m_view_public_key, txkey.sec, derivation);
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CHECK_AND_ASSERT_MES(r, false, "while creating outs: failed to generate_key_derivation(" << miner_address.m_view_public_key << ", " << txkey.sec << ")");
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// Calculate the uniqueness
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size_t output_index = 0;
|
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crypto::hash uniqueness = cn_fast_hash(reinterpret_cast<void*>(&output_index), sizeof(size_t));
|
|
r = crypto::derive_public_key(derivation, /*output_index*/uniqueness, miner_address.m_spend_public_key, out_eph_public_key);
|
|
CHECK_AND_ASSERT_MES(r, false, "while creating outs: failed to derive_public_key(" << derivation << ", " << 0 << ", "<< miner_address.m_spend_public_key << ")");
|
|
|
|
uint64_t amount = block_reward;
|
|
summary_amounts += amount;
|
|
|
|
bool use_view_tags = hard_fork_version >= HF_VERSION_VIEW_TAGS;
|
|
crypto::view_tag view_tag;
|
|
if (use_view_tags)
|
|
crypto::derive_view_tag(derivation, 0, view_tag);
|
|
|
|
tx_out out;
|
|
cryptonote::set_tx_out(amount, "FULM", CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW, out_eph_public_key, use_view_tags, view_tag, out);
|
|
|
|
tx.vout.push_back(out);
|
|
|
|
CHECK_AND_ASSERT_MES(summary_amounts == block_reward, false, "Failed to construct miner tx, summary_amounts = " << summary_amounts << " not equal block_reward = " << block_reward);
|
|
|
|
tx.version = 2;
|
|
|
|
//lock
|
|
tx.unlock_time = 0;//height + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW;
|
|
tx.vin.push_back(in);
|
|
|
|
tx.invalidate_hashes();
|
|
|
|
//LOG_PRINT("MINER_TX generated ok, block_reward=" << print_money(block_reward) << "(" << print_money(block_reward - fee) << "+" << print_money(fee)
|
|
// << "), current_block_size=" << current_block_size << ", already_generated_coins=" << already_generated_coins << ", tx_id=" << get_transaction_hash(tx), LOG_LEVEL_2);
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------
|
|
crypto::public_key get_destination_view_key_pub(const std::vector<tx_destination_entry> &destinations, const boost::optional<cryptonote::account_public_address>& change_addr)
|
|
{
|
|
account_public_address addr = {null_pkey, null_pkey};
|
|
size_t count = 0;
|
|
for (const auto &i : destinations)
|
|
{
|
|
if (i.amount == 0)
|
|
continue;
|
|
if (change_addr && i.addr == *change_addr)
|
|
continue;
|
|
if (i.addr == addr)
|
|
continue;
|
|
if (count > 0)
|
|
return null_pkey;
|
|
addr = i.addr;
|
|
++count;
|
|
}
|
|
if (count == 0 && change_addr)
|
|
return change_addr->m_view_public_key;
|
|
return addr.m_view_public_key;
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool get_return_address(const size_t tx_version, // needed in case we change implementation down the line
|
|
const cryptonote::transaction_type& type, // needed to determine between TRANSFER, CONVERT, YIELD
|
|
const crypto::key_image& ki, // needed for uniqueness
|
|
const cryptonote::account_keys &sender_account_keys, // needed to calculate pretty much anything
|
|
const crypto::public_key &P_change, // one-time public key from CONVERT/YIELD change
|
|
const crypto::public_key &txkey_pub, // public TX key from CONVERT/YIELD TX
|
|
crypto::public_key& F, // OUTPUT
|
|
hw::device& hwdev // hardware device to use (usually a software dev)
|
|
) {
|
|
|
|
// Derivation ( = shared secret = z_i)
|
|
crypto::key_derivation derivation = AUTO_VAL_INIT(derivation);
|
|
bool r = hwdev.generate_key_derivation(txkey_pub, sender_account_keys.m_view_secret_key, derivation);
|
|
CHECK_AND_ASSERT_MES(r, false, "at get_return_address: failed to generate_key_derivation(" << txkey_pub << ", " << sender_account_keys.m_view_secret_key << ")");
|
|
|
|
// Generate the uniqueness for the input
|
|
crypto::hash uniqueness = cn_fast_hash(&ki.data[0], 32);
|
|
|
|
ec_scalar y;
|
|
if (type == cryptonote::TRANSFER) {
|
|
// TRANSFER relies on a shared secret (the key_derivation Z_i) between sender and recipient
|
|
// y = Hs(uniqueness || z_i)
|
|
r = hwdev.derivation_to_scalar(derivation, uniqueness, y);
|
|
CHECK_AND_ASSERT_MES(r, false, "at get_return_address: failed to derivation_to_scalar(" << derivation << ", " << uniqueness << ")");
|
|
} else if (type == cryptonote::CONVERT || type == cryptonote::YIELD) {
|
|
// CONVERT & YIELD do not use the shared secret, because protocol_tx cannot have a wallet address or keys
|
|
// Instead, we just use the uniqueness value from tx.vin[0].k_image
|
|
crypto::hash_to_scalar(&uniqueness, sizeof(crypto::hash), y);
|
|
} else {
|
|
LOG_ERROR("Invalid TX type - return_address is not applicable");
|
|
return false;
|
|
}
|
|
|
|
// Now generate the return address
|
|
// F = (y^-1).a.P_change
|
|
|
|
// First, we need to produce the multiplicative inverse of the scalar "y" (aka "y^-1")
|
|
rct::key key_y = (rct::key&)(y);
|
|
rct::key key_inv_y = invert(key_y);
|
|
|
|
// Now convert this value back into a secret key that we can use
|
|
crypto::secret_key sk_y = rct::rct2sk(key_y);
|
|
crypto::secret_key sk_inv_y = rct::rct2sk(key_inv_y);
|
|
crypto::key_derivation derivation_aP_change = AUTO_VAL_INIT(derivation_aP_change);
|
|
r = hwdev.generate_key_derivation(P_change, sender_account_keys.m_view_secret_key, derivation_aP_change);
|
|
CHECK_AND_ASSERT_MES(r, false, "while calculating get_return_address: failed to generate_key_derivation(" << P_change << ", " << sender_account_keys.m_view_secret_key << ")");
|
|
crypto::public_key pk_aP_change = crypto::null_pkey;
|
|
memcpy(pk_aP_change.data, derivation_aP_change.data, sizeof(crypto::public_key));
|
|
|
|
// Sanity check that we can reverse the invert safely
|
|
rct::key key_aP_change = rct::pk2rct(pk_aP_change);
|
|
rct::key key_test = rct::scalarmultKey(key_aP_change, key_inv_y);
|
|
rct::key key_verify = rct::scalarmultKey(key_test, key_y);
|
|
CHECK_AND_ASSERT_MES(key_verify == key_aP_change, false, "at get_return_address: failed to verify invert() function with smK() approach");
|
|
F = rct::rct2pk(key_test);
|
|
|
|
LOG_ERROR("*****************************************************************************");
|
|
LOG_ERROR("key_image : " << ki);
|
|
LOG_ERROR("uniqueness: " << uniqueness);
|
|
LOG_ERROR("txkey_pub : " << txkey_pub);
|
|
LOG_ERROR("a : " << sender_account_keys.m_view_secret_key);
|
|
LOG_ERROR("y : " << key_y);
|
|
LOG_ERROR("P_change : " << P_change);
|
|
LOG_ERROR("aP_change : " << pk_aP_change);
|
|
LOG_ERROR("F : " << F);
|
|
LOG_ERROR("*****************************************************************************");
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool get_tx_type(const std::string& source, const std::string& destination, transaction_type& type) {
|
|
|
|
// check both source and destination are supported.
|
|
if (std::find(oracle::ASSET_TYPES.begin(), oracle::ASSET_TYPES.end(), source) == oracle::ASSET_TYPES.end()) {
|
|
LOG_ERROR("Source Asset type " << source << " is not supported! Rejecting..");
|
|
return false;
|
|
}
|
|
// Allow an empty destination for BURN commands only
|
|
if (destination != "BURN") {
|
|
if (std::find(oracle::ASSET_TYPES.begin(), oracle::ASSET_TYPES.end(), destination) == oracle::ASSET_TYPES.end()) {
|
|
LOG_ERROR("Destination Asset type " << destination << " is not supported! Rejecting..");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Find the tx type
|
|
if (source == destination) {
|
|
type = transaction_type::TRANSFER;
|
|
} else if (destination == "BURN") {
|
|
type = transaction_type::BURN;
|
|
} else {
|
|
type = transaction_type::CONVERT;
|
|
}
|
|
|
|
// Return success to caller
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool construct_tx_with_tx_key(
|
|
const account_keys& sender_account_keys,
|
|
const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses,
|
|
std::vector<tx_source_entry>& sources,
|
|
std::vector<tx_destination_entry>& destinations,
|
|
const uint8_t hf_version,
|
|
const std::string& source_asset,
|
|
const std::string& dest_asset,
|
|
const transaction_type& tx_type,
|
|
const boost::optional<cryptonote::account_public_address>& change_addr,
|
|
const std::vector<uint8_t> &extra,
|
|
transaction& tx,
|
|
uint64_t unlock_time,
|
|
const crypto::secret_key &tx_key,
|
|
const std::vector<crypto::secret_key> &additional_tx_keys,
|
|
bool rct,
|
|
const rct::RCTConfig &rct_config,
|
|
bool shuffle_outs,
|
|
bool use_view_tags
|
|
)
|
|
{
|
|
hw::device &hwdev = sender_account_keys.get_device();
|
|
|
|
if (sources.empty())
|
|
{
|
|
LOG_ERROR("Empty sources");
|
|
return false;
|
|
}
|
|
|
|
std::vector<rct::key> amount_keys;
|
|
tx.set_null();
|
|
amount_keys.clear();
|
|
|
|
if (hf_version >= HF_VERSION_SLIPPAGE_YIELD) {
|
|
tx.version = 3;
|
|
} else {
|
|
tx.version = 2;
|
|
}
|
|
tx.unlock_time = 0;//unlock_time;
|
|
|
|
tx.extra = extra;
|
|
crypto::public_key txkey_pub;
|
|
|
|
tx.type = tx_type;
|
|
|
|
// Set the source and destination asset_type values
|
|
tx.source_asset_type = source_asset;
|
|
tx.destination_asset_type = dest_asset;
|
|
|
|
// if we have a stealth payment id, find it and encrypt it with the tx key now
|
|
std::vector<tx_extra_field> tx_extra_fields;
|
|
if (parse_tx_extra(tx.extra, tx_extra_fields))
|
|
{
|
|
bool add_dummy_payment_id = true;
|
|
tx_extra_nonce extra_nonce;
|
|
if (find_tx_extra_field_by_type(tx_extra_fields, extra_nonce))
|
|
{
|
|
crypto::hash payment_id = null_hash;
|
|
crypto::hash8 payment_id8 = null_hash8;
|
|
if (get_encrypted_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id8))
|
|
{
|
|
LOG_PRINT_L2("Encrypting payment id " << payment_id8);
|
|
crypto::public_key view_key_pub = get_destination_view_key_pub(destinations, change_addr);
|
|
if (view_key_pub == null_pkey)
|
|
{
|
|
LOG_ERROR("Destinations have to have exactly one output to support encrypted payment ids");
|
|
return false;
|
|
}
|
|
|
|
if (!hwdev.encrypt_payment_id(payment_id8, view_key_pub, tx_key))
|
|
{
|
|
LOG_ERROR("Failed to encrypt payment id");
|
|
return false;
|
|
}
|
|
|
|
std::string extra_nonce;
|
|
set_encrypted_payment_id_to_tx_extra_nonce(extra_nonce, payment_id8);
|
|
remove_field_from_tx_extra(tx.extra, typeid(tx_extra_nonce));
|
|
if (!add_extra_nonce_to_tx_extra(tx.extra, extra_nonce))
|
|
{
|
|
LOG_ERROR("Failed to add encrypted payment id to tx extra");
|
|
return false;
|
|
}
|
|
LOG_PRINT_L1("Encrypted payment ID: " << payment_id8);
|
|
add_dummy_payment_id = false;
|
|
}
|
|
else if (get_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id))
|
|
{
|
|
add_dummy_payment_id = false;
|
|
}
|
|
}
|
|
|
|
// we don't add one if we've got more than the usual 1 destination plus change
|
|
if (destinations.size() > 2)
|
|
add_dummy_payment_id = false;
|
|
|
|
if (add_dummy_payment_id)
|
|
{
|
|
// if we have neither long nor short payment id, add a dummy short one,
|
|
// this should end up being the vast majority of txes as time goes on
|
|
std::string extra_nonce;
|
|
crypto::hash8 payment_id8 = null_hash8;
|
|
crypto::public_key view_key_pub = get_destination_view_key_pub(destinations, change_addr);
|
|
if (view_key_pub == null_pkey)
|
|
{
|
|
LOG_ERROR("Failed to get key to encrypt dummy payment id with");
|
|
}
|
|
else
|
|
{
|
|
hwdev.encrypt_payment_id(payment_id8, view_key_pub, tx_key);
|
|
set_encrypted_payment_id_to_tx_extra_nonce(extra_nonce, payment_id8);
|
|
if (!add_extra_nonce_to_tx_extra(tx.extra, extra_nonce))
|
|
{
|
|
LOG_ERROR("Failed to add dummy encrypted payment id to tx extra");
|
|
// continue anyway
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MWARNING("Failed to parse tx extra");
|
|
tx_extra_fields.clear();
|
|
}
|
|
|
|
struct input_generation_context_data
|
|
{
|
|
keypair in_ephemeral;
|
|
};
|
|
std::vector<input_generation_context_data> in_contexts;
|
|
|
|
uint64_t summary_inputs_money = 0;
|
|
//fill inputs
|
|
int idx = -1;
|
|
for(const tx_source_entry& src_entr: sources)
|
|
{
|
|
++idx;
|
|
if(src_entr.real_output >= src_entr.outputs.size())
|
|
{
|
|
LOG_ERROR("real_output index (" << src_entr.real_output << ")bigger than output_keys.size()=" << src_entr.outputs.size());
|
|
return false;
|
|
}
|
|
summary_inputs_money += src_entr.amount;
|
|
|
|
//key_derivation recv_derivation;
|
|
in_contexts.push_back(input_generation_context_data());
|
|
keypair& in_ephemeral = in_contexts.back().in_ephemeral;
|
|
crypto::key_image img;
|
|
|
|
// Calculate the uniqueness
|
|
size_t output_index_wrapper = src_entr.real_output_in_tx_index;
|
|
crypto::hash uniqueness = cn_fast_hash(reinterpret_cast<void*>(&output_index_wrapper), sizeof(size_t));
|
|
|
|
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, src_entr.uniqueness, in_ephemeral,img, hwdev))
|
|
{
|
|
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) )
|
|
{
|
|
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:"
|
|
<< string_tools::pod_to_hex(src_entr.outputs[src_entr.real_output].second.dest) );
|
|
LOG_ERROR("amount " << src_entr.amount << ", rct " << src_entr.rct);
|
|
LOG_ERROR("tx pubkey " << src_entr.real_out_tx_key << ", real_output_in_tx_index " << src_entr.real_output_in_tx_index);
|
|
return false;
|
|
}
|
|
|
|
//put key image into tx input
|
|
txin_to_key input_to_key;
|
|
input_to_key.amount = src_entr.amount;
|
|
input_to_key.k_image = img;
|
|
input_to_key.asset_type = src_entr.asset_type;
|
|
|
|
//fill outputs array and use relative offsets
|
|
for(const tx_source_entry::output_entry& out_entry: src_entr.outputs)
|
|
input_to_key.key_offsets.push_back(out_entry.first);
|
|
|
|
input_to_key.key_offsets = absolute_output_offsets_to_relative(input_to_key.key_offsets);
|
|
tx.vin.push_back(input_to_key);
|
|
}
|
|
|
|
if (shuffle_outs)
|
|
{
|
|
std::shuffle(destinations.begin(), destinations.end(), crypto::random_device{});
|
|
}
|
|
|
|
// sort ins by their key image
|
|
std::vector<size_t> ins_order(sources.size());
|
|
for (size_t n = 0; n < sources.size(); ++n)
|
|
ins_order[n] = n;
|
|
std::sort(ins_order.begin(), ins_order.end(), [&](const size_t i0, const size_t i1) {
|
|
const txin_to_key &tk0 = boost::get<txin_to_key>(tx.vin[i0]);
|
|
const txin_to_key &tk1 = boost::get<txin_to_key>(tx.vin[i1]);
|
|
return memcmp(&tk0.k_image, &tk1.k_image, sizeof(tk0.k_image)) > 0;
|
|
});
|
|
tools::apply_permutation(ins_order, [&] (size_t i0, size_t i1) {
|
|
std::swap(tx.vin[i0], tx.vin[i1]);
|
|
std::swap(in_contexts[i0], in_contexts[i1]);
|
|
std::swap(sources[i0], sources[i1]);
|
|
});
|
|
|
|
// figure out if we need to make additional tx pubkeys
|
|
size_t num_stdaddresses = 0;
|
|
size_t num_subaddresses = 0;
|
|
account_public_address single_dest_subaddress;
|
|
classify_addresses(destinations, change_addr, num_stdaddresses, num_subaddresses, single_dest_subaddress);
|
|
|
|
// if this is a single-destination transfer to a subaddress, we set the tx pubkey to R=s*D
|
|
if (num_stdaddresses == 0 && num_subaddresses == 1)
|
|
{
|
|
txkey_pub = rct::rct2pk(hwdev.scalarmultKey(rct::pk2rct(single_dest_subaddress.m_spend_public_key), rct::sk2rct(tx_key)));
|
|
}
|
|
else
|
|
{
|
|
txkey_pub = rct::rct2pk(hwdev.scalarmultBase(rct::sk2rct(tx_key)));
|
|
}
|
|
remove_field_from_tx_extra(tx.extra, typeid(tx_extra_pub_key));
|
|
add_tx_pub_key_to_extra(tx, txkey_pub);
|
|
|
|
std::vector<crypto::public_key> additional_tx_public_keys;
|
|
|
|
// we don't need to include additional tx keys if:
|
|
// - all the destinations are standard addresses
|
|
// - there's only one destination which is a subaddress
|
|
bool need_additional_txkeys = num_subaddresses > 0 && (num_stdaddresses > 0 || num_subaddresses > 1);
|
|
if (need_additional_txkeys)
|
|
CHECK_AND_ASSERT_MES(destinations.size() == additional_tx_keys.size(), false, "Wrong amount of additional tx keys");
|
|
|
|
uint64_t summary_outs_money = 0;
|
|
//fill outputs
|
|
size_t output_index = 0;
|
|
for(const tx_destination_entry& dst_entr: destinations)
|
|
{
|
|
CHECK_AND_ASSERT_MES(dst_entr.amount > 0 || tx.version > 1, false, "Destination with wrong amount: " << dst_entr.amount);
|
|
crypto::public_key out_eph_public_key;
|
|
crypto::view_tag view_tag;
|
|
|
|
// Calculate the uniqueness
|
|
crypto::hash uniqueness = cn_fast_hash(reinterpret_cast<void*>(&output_index), sizeof(size_t));
|
|
|
|
hwdev.generate_output_ephemeral_keys(tx.version,sender_account_keys, txkey_pub, tx_key,
|
|
dst_entr, change_addr, output_index,
|
|
need_additional_txkeys, additional_tx_keys,
|
|
additional_tx_public_keys, amount_keys, out_eph_public_key,
|
|
use_view_tags, view_tag, uniqueness);
|
|
|
|
// Is this a BURN or CONVERT TX?
|
|
if (tx_type == cryptonote::transaction_type::BURN || tx_type == cryptonote::transaction_type::CONVERT) {
|
|
// Do not create outputs that are for the destination asset type - discard them as unused
|
|
if (dst_entr.asset_type == dest_asset) {
|
|
tx.amount_burnt += dst_entr.amount;
|
|
amount_keys.pop_back();
|
|
if (tx_type == cryptonote::transaction_type::CONVERT) {
|
|
//tx.amount_slippage_limit += dst_entr.amount;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
tx_out out;
|
|
cryptonote::set_tx_out(dst_entr.amount, dst_entr.asset_type, dst_entr.is_change ? 0 : unlock_time, out_eph_public_key, use_view_tags, view_tag, out);
|
|
tx.vout.push_back(out);
|
|
output_index++;
|
|
summary_outs_money += dst_entr.amount;
|
|
}
|
|
CHECK_AND_ASSERT_MES(additional_tx_public_keys.size() == additional_tx_keys.size(), false, "Internal error creating additional public keys");
|
|
|
|
// Is this a CONVERT tx?
|
|
if (tx_type == cryptonote::transaction_type::CONVERT) {
|
|
// Set the destination address to be something our wallet can prove ownership of.
|
|
// This is where Fulmo gets interesting... we need to include the input key images
|
|
// so that we get uniqueness and prevent either Monero burning bug or key leakage.
|
|
// tx.d_a = Hs("convert" || input_key_image[0] || 8rAG) + B
|
|
const txin_to_key &in = boost::get<txin_to_key>(tx.vin[0]);
|
|
crypto::public_key P_change;
|
|
CHECK_AND_ASSERT_MES(tx.vout.size() == 1, false, "Internal error - too many outputs for CONVERT tx");
|
|
CHECK_AND_ASSERT_MES(cryptonote::get_output_public_key(tx.vout[0], P_change), false, "Internal error - failed to get TX change output public key");
|
|
CHECK_AND_ASSERT_MES(get_return_address(tx.version, tx.type, in.k_image, sender_account_keys, P_change, txkey_pub, tx.return_address, hwdev), false, "Failed to get protocol destination address");
|
|
}
|
|
|
|
remove_field_from_tx_extra(tx.extra, typeid(tx_extra_additional_pub_keys));
|
|
|
|
LOG_PRINT_L2("tx pubkey: " << txkey_pub);
|
|
if (need_additional_txkeys)
|
|
{
|
|
LOG_PRINT_L2("additional tx pubkeys: ");
|
|
for (size_t i = 0; i < additional_tx_public_keys.size(); ++i)
|
|
LOG_PRINT_L2(additional_tx_public_keys[i]);
|
|
add_additional_tx_pub_keys_to_extra(tx.extra, additional_tx_public_keys);
|
|
}
|
|
|
|
if (!sort_tx_extra(tx.extra, tx.extra))
|
|
return false;
|
|
|
|
CHECK_AND_ASSERT_MES(tx.extra.size() <= MAX_TX_EXTRA_SIZE, false, "TX extra size (" << tx.extra.size() << ") is greater than max allowed (" << MAX_TX_EXTRA_SIZE << ")");
|
|
|
|
//check money
|
|
if(summary_outs_money > summary_inputs_money )
|
|
{
|
|
LOG_ERROR("Transaction inputs money ("<< summary_inputs_money << ") less than outputs money (" << summary_outs_money << ")");
|
|
return false;
|
|
}
|
|
|
|
// check for watch only wallet
|
|
bool zero_secret_key = true;
|
|
for (size_t i = 0; i < sizeof(sender_account_keys.m_spend_secret_key); ++i)
|
|
zero_secret_key &= (sender_account_keys.m_spend_secret_key.data[i] == 0);
|
|
if (zero_secret_key)
|
|
{
|
|
MDEBUG("Null secret key, skipping signatures");
|
|
}
|
|
|
|
if (tx.version == 1)
|
|
{
|
|
//generate ring signatures
|
|
crypto::hash tx_prefix_hash;
|
|
get_transaction_prefix_hash(tx, tx_prefix_hash);
|
|
|
|
std::stringstream ss_ring_s;
|
|
size_t i = 0;
|
|
for(const tx_source_entry& src_entr: sources)
|
|
{
|
|
ss_ring_s << "pub_keys:" << ENDL;
|
|
std::vector<const crypto::public_key*> keys_ptrs;
|
|
std::vector<crypto::public_key> keys(src_entr.outputs.size());
|
|
size_t ii = 0;
|
|
for(const tx_source_entry::output_entry& o: src_entr.outputs)
|
|
{
|
|
keys[ii] = rct2pk(o.second.dest);
|
|
keys_ptrs.push_back(&keys[ii]);
|
|
ss_ring_s << o.second.dest << ENDL;
|
|
++ii;
|
|
}
|
|
|
|
tx.signatures.push_back(std::vector<crypto::signature>());
|
|
std::vector<crypto::signature>& sigs = tx.signatures.back();
|
|
sigs.resize(src_entr.outputs.size());
|
|
if (!zero_secret_key)
|
|
crypto::generate_ring_signature(tx_prefix_hash, boost::get<txin_to_key>(tx.vin[i]).k_image, keys_ptrs, in_contexts[i].in_ephemeral.sec, src_entr.real_output, sigs.data());
|
|
ss_ring_s << "signatures:" << ENDL;
|
|
std::for_each(sigs.begin(), sigs.end(), [&](const crypto::signature& s){ss_ring_s << s << ENDL;});
|
|
ss_ring_s << "prefix_hash:" << tx_prefix_hash << ENDL << "in_ephemeral_key: " << in_contexts[i].in_ephemeral.sec << ENDL << "real_output: " << src_entr.real_output << ENDL;
|
|
i++;
|
|
}
|
|
|
|
MCINFO("construct_tx", "transaction_created: " << get_transaction_hash(tx) << ENDL << obj_to_json_str(tx) << ENDL << ss_ring_s.str());
|
|
}
|
|
else
|
|
{
|
|
size_t n_total_outs = sources[0].outputs.size(); // only for non-simple rct
|
|
|
|
// the non-simple version is slightly smaller, but assumes all real inputs
|
|
// are on the same index, so can only be used if there just one ring.
|
|
bool use_simple_rct = sources.size() > 1 || rct_config.range_proof_type != rct::RangeProofBorromean;
|
|
|
|
if (!use_simple_rct)
|
|
{
|
|
// non simple ringct requires all real inputs to be at the same index for all inputs
|
|
for(const tx_source_entry& src_entr: sources)
|
|
{
|
|
if(src_entr.real_output != sources.begin()->real_output)
|
|
{
|
|
LOG_ERROR("All inputs must have the same index for non-simple ringct");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// enforce same mixin for all outputs
|
|
for (size_t i = 1; i < sources.size(); ++i) {
|
|
if (n_total_outs != sources[i].outputs.size()) {
|
|
LOG_ERROR("Non-simple ringct transaction has varying ring size");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint64_t amount_in = 0, amount_out = 0;
|
|
rct::ctkeyV inSk;
|
|
inSk.reserve(sources.size());
|
|
// mixRing indexing is done the other way round for simple
|
|
rct::ctkeyM mixRing(use_simple_rct ? sources.size() : n_total_outs);
|
|
rct::keyV destinations;
|
|
std::vector<uint64_t> inamounts, outamounts;
|
|
std::vector<std::string> destination_asset_types;
|
|
std::vector<unsigned int> index;
|
|
for (size_t i = 0; i < sources.size(); ++i)
|
|
{
|
|
rct::ctkey ctkey;
|
|
amount_in += sources[i].amount;
|
|
inamounts.push_back(sources[i].amount);
|
|
index.push_back(sources[i].real_output);
|
|
// inSk: (secret key, mask)
|
|
ctkey.dest = rct::sk2rct(in_contexts[i].in_ephemeral.sec);
|
|
ctkey.mask = sources[i].mask;
|
|
inSk.push_back(ctkey);
|
|
memwipe(&ctkey, sizeof(rct::ctkey));
|
|
// inPk: (public key, commitment)
|
|
// will be done when filling in mixRing
|
|
}
|
|
for (size_t i = 0; i < tx.vout.size(); ++i)
|
|
{
|
|
crypto::public_key output_public_key;
|
|
bool ok = get_output_public_key(tx.vout[i], output_public_key);
|
|
if (!ok) {
|
|
LOG_ERROR("failed to get output public key for tx.vout[" << i << "]");
|
|
return false;
|
|
}
|
|
std::string output_asset_type;
|
|
ok = cryptonote::get_output_asset_type(tx.vout[i], output_asset_type);
|
|
if (!ok) {
|
|
LOG_ERROR("failed to get output asset type for tx.vout[" << i << "]");
|
|
return false;
|
|
}
|
|
destinations.push_back(rct::pk2rct(output_public_key));
|
|
destination_asset_types.push_back(output_asset_type);
|
|
outamounts.push_back(tx.vout[i].amount);
|
|
amount_out += tx.vout[i].amount;
|
|
}
|
|
|
|
if (use_simple_rct)
|
|
{
|
|
// mixRing indexing is done the other way round for simple
|
|
for (size_t i = 0; i < sources.size(); ++i)
|
|
{
|
|
mixRing[i].resize(sources[i].outputs.size());
|
|
for (size_t n = 0; n < sources[i].outputs.size(); ++n)
|
|
{
|
|
mixRing[i][n] = sources[i].outputs[n].second;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (size_t i = 0; i < n_total_outs; ++i) // same index assumption
|
|
{
|
|
mixRing[i].resize(sources.size());
|
|
for (size_t n = 0; n < sources.size(); ++n)
|
|
{
|
|
mixRing[i][n] = sources[n].outputs[i].second;
|
|
}
|
|
}
|
|
}
|
|
|
|
// fee
|
|
uint64_t fee = 0;
|
|
if (!use_simple_rct && amount_in > amount_out)
|
|
outamounts.push_back(amount_in - amount_out);
|
|
else
|
|
fee = summary_inputs_money - summary_outs_money - tx.amount_burnt;
|
|
|
|
// zero out all amounts to mask rct outputs, real amounts are now encrypted
|
|
for (size_t i = 0; i < tx.vin.size(); ++i)
|
|
{
|
|
if (sources[i].rct)
|
|
boost::get<txin_to_key>(tx.vin[i]).amount = 0;
|
|
}
|
|
for (size_t i = 0; i < tx.vout.size(); ++i)
|
|
tx.vout[i].amount = 0;
|
|
|
|
crypto::hash tx_prefix_hash;
|
|
get_transaction_prefix_hash(tx, tx_prefix_hash, hwdev);
|
|
rct::ctkeyV outSk;
|
|
if (use_simple_rct)
|
|
tx.rct_signatures = rct::genRctSimple(
|
|
rct::hash2rct(tx_prefix_hash),
|
|
inSk,
|
|
destinations,
|
|
tx_type,
|
|
source_asset,
|
|
destination_asset_types,
|
|
inamounts,
|
|
outamounts,
|
|
fee,
|
|
mixRing,
|
|
amount_keys,
|
|
index,
|
|
outSk,
|
|
rct_config,
|
|
hwdev
|
|
);
|
|
else
|
|
tx.rct_signatures = rct::genRct(rct::hash2rct(tx_prefix_hash), inSk, destinations, outamounts, mixRing, amount_keys, sources[0].real_output, outSk, rct_config, hwdev); // same index assumption
|
|
memwipe(inSk.data(), inSk.size() * sizeof(rct::ctkey));
|
|
|
|
CHECK_AND_ASSERT_MES(tx.vout.size() == outSk.size(), false, "outSk size does not match vout");
|
|
|
|
MCINFO("construct_tx", "transaction_created: " << get_transaction_hash(tx) << ENDL << obj_to_json_str(tx) << ENDL);
|
|
}
|
|
|
|
tx.invalidate_hashes();
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, std::vector<tx_source_entry>& sources, std::vector<tx_destination_entry>& destinations, const uint8_t hf_version, const std::string& source_asset, const std::string& dest_asset, const transaction_type& tx_type, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, std::vector<crypto::secret_key> &additional_tx_keys, bool rct, const rct::RCTConfig &rct_config, bool use_view_tags)
|
|
{
|
|
hw::device &hwdev = sender_account_keys.get_device();
|
|
hwdev.open_tx(tx_key);
|
|
try {
|
|
// figure out if we need to make additional tx pubkeys
|
|
size_t num_stdaddresses = 0;
|
|
size_t num_subaddresses = 0;
|
|
account_public_address single_dest_subaddress;
|
|
classify_addresses(destinations, change_addr, num_stdaddresses, num_subaddresses, single_dest_subaddress);
|
|
bool need_additional_txkeys = num_subaddresses > 0 && (num_stdaddresses > 0 || num_subaddresses > 1);
|
|
if (need_additional_txkeys)
|
|
{
|
|
additional_tx_keys.clear();
|
|
for (size_t i = 0; i < destinations.size(); ++i)
|
|
{
|
|
additional_tx_keys.push_back(keypair::generate(sender_account_keys.get_device()).sec);
|
|
}
|
|
}
|
|
|
|
bool shuffle_outs = true;
|
|
bool r = construct_tx_with_tx_key(sender_account_keys, subaddresses, sources, destinations, hf_version, source_asset, dest_asset, tx_type, change_addr, extra, tx, unlock_time, tx_key, additional_tx_keys, rct, rct_config, shuffle_outs, use_view_tags);
|
|
hwdev.close_tx();
|
|
return r;
|
|
} catch(...) {
|
|
hwdev.close_tx();
|
|
throw;
|
|
}
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool construct_tx(const account_keys& sender_account_keys, std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, const uint8_t hf_version, const std::string& source_asset, const std::string& dest_asset, const cryptonote::transaction_type& tx_type, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time)
|
|
{
|
|
std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
|
|
subaddresses[sender_account_keys.m_account_address.m_spend_public_key] = {0,0};
|
|
crypto::secret_key tx_key;
|
|
std::vector<crypto::secret_key> additional_tx_keys;
|
|
std::vector<tx_destination_entry> destinations_copy = destinations;
|
|
return construct_tx_and_get_tx_key(sender_account_keys, subaddresses, sources, destinations_copy, hf_version, source_asset, dest_asset, tx_type, change_addr, extra, tx, unlock_time, tx_key, additional_tx_keys, false, { rct::RangeProofBorromean, 0});
|
|
}
|
|
//---------------------------------------------------------------
|
|
bool generate_genesis_block(
|
|
block& bl
|
|
, std::string const & genesis_tx
|
|
, uint32_t nonce
|
|
)
|
|
{
|
|
//genesis block
|
|
bl = {};
|
|
bl.protocol_tx.set_null();
|
|
bl.protocol_tx.type = cryptonote::transaction_type::PROTOCOL;
|
|
|
|
blobdata tx_bl;
|
|
bool r = string_tools::parse_hexstr_to_binbuff(genesis_tx, tx_bl);
|
|
CHECK_AND_ASSERT_MES(r, false, "failed to parse coinbase tx from hard coded blob");
|
|
r = parse_and_validate_tx_from_blob(tx_bl, bl.miner_tx);
|
|
CHECK_AND_ASSERT_MES(r, false, "failed to parse coinbase tx from hard coded blob");
|
|
bl.major_version = CURRENT_BLOCK_MAJOR_VERSION;
|
|
bl.minor_version = CURRENT_BLOCK_MINOR_VERSION;
|
|
bl.timestamp = 0;
|
|
bl.nonce = nonce;
|
|
miner::find_nonce_for_given_block([](const cryptonote::block &b, uint64_t height, const crypto::hash *seed_hash, unsigned int threads, crypto::hash &hash){
|
|
return cryptonote::get_block_longhash(NULL, b, hash, height, seed_hash, threads);
|
|
}, bl, 1, 0, NULL);
|
|
bl.invalidate_hashes();
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------
|
|
void get_altblock_longhash(const block& b, crypto::hash& res, const crypto::hash& seed_hash)
|
|
{
|
|
blobdata bd = get_block_hashing_blob(b);
|
|
rx_slow_hash(seed_hash.data, bd.data(), bd.size(), res.data);
|
|
}
|
|
|
|
bool get_block_longhash(const Blockchain *pbc, const blobdata& bd, crypto::hash& res, const uint64_t height, const int major_version, const crypto::hash *seed_hash, const int miners)
|
|
{
|
|
// block 202612 bug workaround
|
|
if (height == 202612)
|
|
{
|
|
static const std::string longhash_202612 = "84f64766475d51837ac9efbef1926486e58563c95a19fef4aec3254f03000000";
|
|
epee::string_tools::hex_to_pod(longhash_202612, res);
|
|
return true;
|
|
}
|
|
if (major_version >= RX_BLOCK_VERSION)
|
|
{
|
|
crypto::hash hash;
|
|
if (pbc != NULL)
|
|
{
|
|
const uint64_t seed_height = rx_seedheight(height);
|
|
hash = seed_hash ? *seed_hash : pbc->get_pending_block_id_by_height(seed_height);
|
|
} else
|
|
{
|
|
memset(&hash, 0, sizeof(hash)); // only happens when generating genesis block
|
|
}
|
|
rx_slow_hash(hash.data, bd.data(), bd.size(), res.data);
|
|
} else {
|
|
const int pow_variant = major_version >= 7 ? major_version - 6 : 0;
|
|
crypto::cn_slow_hash(bd.data(), bd.size(), res, pow_variant, height);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool get_block_longhash(const Blockchain *pbc, const block& b, crypto::hash& res, const uint64_t height, const crypto::hash *seed_hash, const int miners)
|
|
{
|
|
blobdata bd = get_block_hashing_blob(b);
|
|
return get_block_longhash(pbc, bd, res, height, b.major_version, seed_hash, miners);
|
|
}
|
|
|
|
crypto::hash get_block_longhash(const Blockchain *pbc, const block& b, const uint64_t height, const crypto::hash *seed_hash, const int miners)
|
|
{
|
|
crypto::hash p = crypto::null_hash;
|
|
get_block_longhash(pbc, b, p, height, seed_hash, miners);
|
|
return p;
|
|
}
|
|
}
|