check_tx_signature.h

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// Copyright (c) 2014-2022, The Monero Project
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
 
#pragma once
 
#include <vector>
 
#include "cryptonote_basic/account.h"
#include "cryptonote_basic/cryptonote_basic.h"
#include "cryptonote_core/cryptonote_tx_utils.h"
#include "crypto/crypto.h"
#include "ringct/rctSigs.h"
 
#include "multi_tx_test_base.h"
 
template<size_t a_ring_size, size_t a_outputs, bool a_rct, rct::RangeProofType range_proof_type = rct::RangeProofBorromean, int bp_version = 2>
class test_check_tx_signature : private multi_tx_test_base<a_ring_size>
{
  static_assert(0 < a_ring_size, "ring_size must be greater than 0");
 
public:
  static const size_t loop_count = a_rct ? (a_ring_size <= 2 ? 50 : 10) : a_ring_size < 100 ? 100 : 10;
  static const size_t ring_size = a_ring_size;
  static const size_t outputs = a_outputs;
  static const bool rct = a_rct;
 
  typedef multi_tx_test_base<a_ring_size> base_class;
 
  bool init()
  {
    using namespace cryptonote;
 
    if (!base_class::init())
      return false;
 
    m_alice.generate();
 
    std::vector<tx_destination_entry> destinations;
    destinations.push_back(tx_destination_entry(this->m_source_amount - outputs + 1, m_alice.get_keys().m_account_address, false));
    for (size_t n = 1; n < outputs; ++n)
      destinations.push_back(tx_destination_entry(1, m_alice.get_keys().m_account_address, false));
 
    crypto::secret_key tx_key;
    std::vector<crypto::secret_key> additional_tx_keys;
    std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
    subaddresses[this->m_miners[this->real_source_idx].get_keys().m_account_address.m_spend_public_key] = {0,0};
    rct::RCTConfig rct_config{range_proof_type, bp_version};
    if (!construct_tx_and_get_tx_key(this->m_miners[this->real_source_idx].get_keys(), subaddresses, this->m_sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), m_tx, tx_key, additional_tx_keys, rct, rct_config))
      return false;
 
    get_transaction_prefix_hash(m_tx, m_tx_prefix_hash);
 
    return true;
  }
 
  bool test()
  {
    if (rct)
    {
      if (m_tx.rct_signatures.type == rct::RCTTypeFull)
        return rct::verRct(m_tx.rct_signatures);
      else
        return rct::verRctSimple(m_tx.rct_signatures);
    }
    else
    {
      const cryptonote::txin_to_key& txin = boost::get<cryptonote::txin_to_key>(m_tx.vin[0]);
      return crypto::check_ring_signature(m_tx_prefix_hash, txin.k_image, this->m_public_key_ptrs, ring_size, m_tx.signatures[0].data());
    }
  }
 
private:
  cryptonote::account_base m_alice;
  cryptonote::transaction m_tx;
  crypto::hash m_tx_prefix_hash;
};
 
template<size_t a_ring_size, size_t a_outputs, size_t a_num_txes, size_t extra_outs = 0>
class test_check_tx_signature_aggregated_bulletproofs : private multi_tx_test_base<a_ring_size>
{
  static_assert(0 < a_ring_size, "ring_size must be greater than 0");
 
public:
  static const size_t loop_count = a_ring_size <= 2 ? 50 : 10;
  static const size_t ring_size = a_ring_size;
  static const size_t outputs = a_outputs;
 
  typedef multi_tx_test_base<a_ring_size> base_class;
 
  bool init()
  {
    using namespace cryptonote;
 
    if (!base_class::init())
      return false;
 
    m_alice.generate();
 
    std::vector<tx_destination_entry> destinations;
    destinations.push_back(tx_destination_entry(this->m_source_amount - outputs + 1, m_alice.get_keys().m_account_address, false));
    for (size_t n = 1; n < outputs; ++n)
      destinations.push_back(tx_destination_entry(1, m_alice.get_keys().m_account_address, false));
 
    crypto::secret_key tx_key;
    std::vector<crypto::secret_key> additional_tx_keys;
    std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
    subaddresses[this->m_miners[this->real_source_idx].get_keys().m_account_address.m_spend_public_key] = {0,0};
 
    m_txes.resize(a_num_txes + (extra_outs > 0 ? 1 : 0));
    for (size_t n = 0; n < a_num_txes; ++n)
    {
      if (!construct_tx_and_get_tx_key(this->m_miners[this->real_source_idx].get_keys(), subaddresses, this->m_sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), m_txes[n], tx_key, additional_tx_keys, true, {rct::RangeProofPaddedBulletproof, 2}))
        return false;
    }
 
    if (extra_outs)
    {
      destinations.clear();
      destinations.push_back(tx_destination_entry(this->m_source_amount - extra_outs + 1, m_alice.get_keys().m_account_address, false));
      for (size_t n = 1; n < extra_outs; ++n)
        destinations.push_back(tx_destination_entry(1, m_alice.get_keys().m_account_address, false));
 
      if (!construct_tx_and_get_tx_key(this->m_miners[this->real_source_idx].get_keys(), subaddresses, this->m_sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), m_txes.back(), tx_key, additional_tx_keys, true, {rct::RangeProofMultiOutputBulletproof, 2}))
        return false;
    }
 
    return true;
  }
 
  bool test()
  {
    std::vector<const rct::rctSig*> rvv;
    rvv.reserve(m_txes.size());
    for (size_t n = 0; n < m_txes.size(); ++n)
    {
      const rct::rctSig &rv = m_txes[n].rct_signatures;
      if (!rct::verRctNonSemanticsSimple(rv))
        return false;
      rvv.push_back(&rv);
    }
    return rct::verRctSemanticsSimple(rvv);
  }
 
private:
  cryptonote::account_base m_alice;
  std::vector<cryptonote::transaction> m_txes;
};