text: // Copyright (c) 2017-2018, 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 "cryptonote_basic/cryptonote_basic.h"
  #include "multisig/multisig.h"
  #include "common/apply_permutation.h"
  #include "chaingen.h"
  #include "multisig.h"
  #include "device/device.hpp"
  using namespace epee;
  using namespace crypto;
  using namespace cryptonote;
  
  //#define NO_MULTISIG
  
  //----------------------------------------------------------------------------------------------------------------------
  // Tests
  
  bool gen_multisig_tx_validation_base::generate_with(std::vector<test_event_entry>& events,
      size_t inputs, size_t mixin, uint64_t amount_paid, bool valid,
      size_t threshold, size_t total, size_t creator, std::vector<size_t> signers,
      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;
    bool r;
  
    CHECK_AND_ASSERT_MES(total >= 2, false, "Bad scheme");
    CHECK_AND_ASSERT_MES(threshold <= total, false, "Bad scheme");
    CHECK_AND_ASSERT_MES(threshold >= total - 1, false, "Unsupported scheme");
  #ifdef NO_MULTISIG
    CHECK_AND_ASSERT_MES(total <= 5, false, "Unsupported scheme");
  #endif
    CHECK_AND_ASSERT_MES(inputs >= 1 && inputs <= 8, false, "Inputs should between 1 and 8");
  
    // given as 1 based for clarity
    --creator;
    for (size_t &signer: signers)
      --signer;
  
    CHECK_AND_ASSERT_MES(creator < total, false, "invalid creator");
    for (size_t signer: signers)
      CHECK_AND_ASSERT_MES(signer < total, false, "invalid signer");
  
  #ifdef NO_MULTISIG
    GENERATE_ACCOUNT(acc0);
    GENERATE_ACCOUNT(acc1);
    GENERATE_ACCOUNT(acc2);
    GENERATE_ACCOUNT(acc3);
    GENERATE_ACCOUNT(acc4);
    account_base miner_account[5] = {acc0, acc1, acc2, acc3, acc4};
  #else
    GENERATE_MULTISIG_ACCOUNT(miner_account, threshold, total);
  #endif
  
    MAKE_GENESIS_BLOCK(events, blk_0, miner_account[creator], ts_start);
  
    // create 8 miner accounts, and have them mine the next 8 blocks
    // they will have a coinbase with a single out that's pseudo rct
    constexpr size_t n_coinbases = 8;
    cryptonote::account_base miner_accounts[n_coinbases];
    const cryptonote::block *prev_block = &blk_0;
    cryptonote::block blocks[n_coinbases];
    for (size_t n = 0; n < n_coinbases; ++n) {
      // the first block goes to the multisig account
      miner_accounts[n].generate();
      account_base &account = n < inputs ? miner_account[creator] : miner_accounts[n];
      CHECK_AND_ASSERT_MES(generator.construct_block_manually(blocks[n], *prev_block, 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, prev_block->timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
            crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 1, 4),
          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));
      LOG_PRINT_L0("in block: " << obj_to_json_str(blocks[n]));
    }
  
    // rewind
    cryptonote::block blk_r, blk_last;
    {
      blk_last = blocks[n_coinbases - 1];
      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_accounts[0],
            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, 1, 4),
            false, "Failed to generate block");
        events.push_back(blk);
        blk_last = blk;
      }
      blk_r = blk_last;
    }
  
    cryptonote::keypair in_ephemeral;
    crypto::public_key tx_pub_key[n_coinbases];
    crypto::public_key output_pub_key[n_coinbases];
    for (size_t n = 0; n < n_coinbases; ++n)
    {
      tx_pub_key[n] = get_tx_pub_key_from_extra(blocks[n].miner_tx);
      MDEBUG("tx_pub_key: " << tx_pub_key);
      output_pub_key[n] = boost::get<txout_to_key>(blocks[n].miner_tx.vout[0].target).key;
      MDEBUG("output_pub_key: " << output_pub_key);
    }
  
    std::unordered_map<crypto::public_key, cryptonote::subaddress_index> subaddresses;
    subaddresses[miner_account[0].get_keys().m_account_address.m_spend_public_key] = {0,0};
  
  #ifndef NO_MULTISIG
    // create k/L/R/ki for that output we're going to spend
    std::vector<std::vector<std::vector<crypto::secret_key>>> account_k(total);
    std::vector<std::vector<std::vector<crypto::public_key>>> account_L(total);
    std::vector<std::vector<std::vector<crypto::public_key>>> account_R(total);
    std::vector<std::vector<std::vector<crypto::key_image>>> account_ki(total);
    std::vector<crypto::public_key> additional_tx_keys;
    for (size_t msidx = 0; msidx < total; ++msidx)
    {
      CHECK_AND_ASSERT_MES(miner_account[msidx].get_keys().m_account_address.m_spend_public_key == miner_account[0].get_keys().m_account_address.m_spend_public_key,
          false, "Mismatched spend public keys");
  
      size_t nlr = threshold < total ? threshold - 1 : 1;
      account_k[msidx].resize(inputs);
      account_L[msidx].resize(inputs);
      account_R[msidx].resize(inputs);
      account_ki[msidx].resize(inputs);
      for (size_t tdidx = 0; tdidx < inputs; ++tdidx)
      {
        account_L[msidx][tdidx].resize(nlr);
        account_R[msidx][tdidx].resize(nlr);
        for (size_t n = 0; n < nlr; ++n)
        {
          account_k[msidx][tdidx].push_back(rct::rct2sk(rct::skGen()));
          cryptonote::generate_multisig_LR(output_pub_key[tdidx], account_k[msidx][tdidx][n], account_L[msidx][tdidx][n], account_R[msidx][tdidx][n]);
        }
        size_t numki = miner_account[msidx].get_multisig_keys().size();
        account_ki[msidx][tdidx].resize(numki);
        for (size_t kiidx = 0; kiidx < numki; ++kiidx)
        {
          r = cryptonote::generate_multisig_key_image(miner_account[msidx].get_keys(), kiidx, output_pub_key[tdidx], account_ki[msidx][tdidx][kiidx]);
          CHECK_AND_ASSERT_MES(r, false, "Failed to generate multisig export key image");
        }
        MDEBUG("Party " << msidx << ":");
        MDEBUG("spend: sec " << miner_account[msidx].get_keys().m_spend_secret_key << ", pub " << miner_account[msidx].get_keys().m_account_address.m_spend_public_key);
        MDEBUG("view: sec " << miner_account[msidx].get_keys().m_view_secret_key << ", pub " << miner_account[msidx].get_keys().m_account_address.m_view_public_key);
        for (const auto &k: miner_account[msidx].get_multisig_keys())
          MDEBUG("msk: " << k);
        for (size_t n = 0; n < account_k[msidx][tdidx].size(); ++n)
        {
          MDEBUG("k: " << account_k[msidx][tdidx][n]);
          MDEBUG("L: " << account_L[msidx][tdidx][n]);
          MDEBUG("R: " << account_R[msidx][tdidx][n]);
        }
        for (const auto &ki: account_ki[msidx][tdidx])
          MDEBUG("ki: " << ki);
      }
    }
  #endif
  
    // create kLRki
    std::vector<rct::multisig_kLRki> kLRkis;
    std::unordered_set<crypto::public_key> used_L;
    for (size_t tdidx = 0; tdidx < inputs; ++tdidx)
    {
      kLRkis.push_back(rct::multisig_kLRki());
      rct::multisig_kLRki &kLRki = kLRkis.back();
  #ifdef NO_MULTISIG
      kLRki = {rct::zero(), rct::zero(), rct::zero(), rct::zero()};
  #else
      kLRki.k = rct::sk2rct(account_k[creator][tdidx][0]);
      kLRki.L = rct::pk2rct(account_L[creator][tdidx][0]);
      kLRki.R = rct::pk2rct(account_R[creator][tdidx][0]);
      MDEBUG("Starting with k " << kLRki.k);
      MDEBUG("Starting with L " << kLRki.L);
      MDEBUG("Starting with R " << kLRki.R);
      for (size_t msidx = 0; msidx < total; ++msidx)
      {
        if (msidx == creator)
          continue;
        if (std::find(signers.begin(), signers.end(), msidx) == signers.end())
          continue;
        for (size_t lr = 0; lr < account_L[msidx][tdidx].size(); ++lr)
        {
          if (used_L.find(account_L[msidx][tdidx][lr]) == used_L.end())
          {
            used_L.insert(account_L[msidx][tdidx][lr]);
            MDEBUG("Adding L " << account_L[msidx][tdidx][lr] << " (for k " << account_k[msidx][tdidx][lr] << ")");
            MDEBUG("Adding R " << account_R[msidx][tdidx][lr]);
            rct::addKeys((rct::key&)kLRki.L, kLRki.L, rct::pk2rct(account_L[msidx][tdidx][lr]));
            rct::addKeys((rct::key&)kLRki.R, kLRki.R, rct::pk2rct(account_R[msidx][tdidx][lr]));
            break;
          }
        }
      }
      std::vector<crypto::key_image> pkis;
      for (size_t msidx = 0; msidx < total; ++msidx)
        for (size_t n = 0; n < account_ki[msidx][tdidx].size(); ++n)
          pkis.push_back(account_ki[msidx][tdidx][n]);
      r = cryptonote::generate_multisig_composite_key_image(miner_account[0].get_keys(), subaddresses, output_pub_key[tdidx], tx_pub_key[tdidx], additional_tx_keys, 0, pkis, (crypto::key_image&)kLRki.ki);
      CHECK_AND_ASSERT_MES(r, false, "Failed to generate composite key image");
      MDEBUG("composite ki: " << kLRki.ki);
      MDEBUG("L: " << kLRki.L);
      MDEBUG("R: " << kLRki.R);
      for (size_t n = 1; n < total; ++n)
      {
        rct::key ki;
        r = cryptonote::generate_multisig_composite_key_image(miner_account[n].get_keys(), subaddresses, output_pub_key[tdidx], tx_pub_key[tdidx], additional_tx_keys, 0, pkis, (crypto::key_image&)ki);
        CHECK_AND_ASSERT_MES(r, false, "Failed to generate composite key image");
        CHECK_AND_ASSERT_MES(kLRki.ki == ki, false, "Composite key images do not match");
      }
    }
  #endif
  
    // create a tx: we have 8 outputs, all from coinbase, so "fake" rct - use 2
    std::vector<tx_source_entry> sources;
    for (size_t n = 0; n < inputs; ++n)
    {
      sources.resize(sources.size() + 1);
      tx_source_entry& src = sources.back();
  
      src.real_output = n;
      src.amount = blocks[n].miner_tx.vout[0].amount;
      src.real_out_tx_key = tx_pub_key[n];
      src.real_output_in_tx_index = 0;
      src.mask = rct::identity();
      src.rct = true;
      src.multisig_kLRki = kLRkis[n];
  
      for (size_t m = 0; m <= mixin; ++m)
      {
        rct::ctkey ctkey;
        ctkey.dest = rct::pk2rct(boost::get<txout_to_key>(blocks[m].miner_tx.vout[0].target).key);
        MDEBUG("using " << (m == n ? "real" : "fake") << " input " << ctkey.dest);
        ctkey.mask = rct::commit(blocks[m].miner_tx.vout[0].amount, rct::identity()); // since those are coinbases, the masks are known
        src.outputs.push_back(std::make_pair(m, ctkey));
      }
    }
  
    //fill outputs entry
    tx_destination_entry td;
    td.addr = miner_account[creator].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;
  #ifdef NO_MULTISIG
    rct::multisig_out *msoutp = NULL;
  #else
    rct::multisig_out msout;
    rct::multisig_out *msoutp = &msout;
  #endif
    std::vector<crypto::secret_key> additional_tx_secret_keys;
    auto sources_copy = sources;
    r = construct_tx_and_get_tx_key(miner_account[creator].get_keys(), subaddresses, sources, destinations, boost::none, std::vector<uint8_t>(), tx, 0, tx_key, additional_tx_secret_keys, true, false, msoutp);
    CHECK_AND_ASSERT_MES(r, false, "failed to construct transaction");
  
  #ifndef NO_MULTISIG
    // work out the permutation done on sources
    std::vector<size_t> ins_order;
    for (size_t n = 0; n < sources.size(); ++n)
    {
      for (size_t idx = 0; idx < sources_copy.size(); ++idx)
      {
        CHECK_AND_ASSERT_MES((size_t)sources_copy[idx].real_output < sources_copy[idx].outputs.size(),
            false, "Invalid real_output");
        if (sources_copy[idx].outputs[sources_copy[idx].real_output].second.dest == sources[n].outputs[sources[n].real_output].second.dest)
          ins_order.push_back(idx);
      }
    }
    CHECK_AND_ASSERT_MES(ins_order.size() == sources.size(), false, "Failed to work out sources permutation");
  #endif
  
  #ifndef NO_MULTISIG
    // sign
    std::unordered_set<crypto::secret_key> used_keys;
    const std::vector<crypto::secret_key> &msk0 = miner_account[creator].get_multisig_keys();
    for (const auto &sk: msk0)
      used_keys.insert(sk);
    for (size_t signer: signers)
    {
      rct::key skey = rct::zero();
      const std::vector<crypto::secret_key> &msk1 = miner_account[signer].get_multisig_keys();
      for (size_t n = 0; n < msk1.size(); ++n)
      {
        const crypto::secret_key &sk1 = msk1[n];
        if (used_keys.find(sk1) == used_keys.end())
        {
          used_keys.insert(sk1);
          sc_add(skey.bytes, skey.bytes, rct::sk2rct(sk1).bytes);
        }
      }
      CHECK_AND_ASSERT_MES(!(skey == rct::zero()), false, "failed to find secret multisig key to sign transaction");
      std::vector<unsigned int> indices;
      for (const auto &src: sources_copy)
        indices.push_back(src.real_output);
      rct::keyV k;
      for (size_t tdidx = 0; tdidx < inputs; ++tdidx)
      {
        k.push_back(rct::zero());
        for (size_t n = 0; n < account_k[signer][tdidx].size(); ++n)
        {
          crypto::public_key L;
          rct::scalarmultBase((rct::key&)L, rct::sk2rct(account_k[signer][tdidx][n]));
          if (used_L.find(L) != used_L.end())
          {
            sc_add(k.back().bytes, k.back().bytes, rct::sk2rct(account_k[signer][tdidx][n]).bytes);
          }
        }
        CHECK_AND_ASSERT_MES(!(k.back() == rct::zero()), false, "failed to find k to sign transaction");
      }
      tools::apply_permutation(ins_order, indices);
      tools::apply_permutation(ins_order, k);
  
      MDEBUG("signing with k size " << k.size());
      MDEBUG("signing with k " << k.back());
      MDEBUG("signing with sk " << skey);
      for (const auto &sk: used_keys)
        MDEBUG("  created with sk " << sk);
      MDEBUG("signing with c size " << msout.c.size());
      MDEBUG("signing with c " << msout.c.back());
      r = rct::signMultisig(tx.rct_signatures, indices, k, msout, skey);
      CHECK_AND_ASSERT_MES(r, false, "failed to sign transaction");
    }
  #endif
  
    // verify this tx is really to the expected address
    const crypto::public_key tx_pub_key2 = get_tx_pub_key_from_extra(tx, 0);
    crypto::key_derivation derivation;
    r = crypto::generate_key_derivation(tx_pub_key2, miner_account[creator].get_keys().m_view_secret_key, derivation);
    CHECK_AND_ASSERT_MES(r, false, "Failed to generate derivation");
    uint64_t n_outs = 0, amount = 0;
    std::vector<crypto::key_derivation> additional_derivations;
    for (size_t n = 0; n < tx.vout.size(); ++n)
    {
      CHECK_AND_ASSERT_MES(typeid(txout_to_key) == tx.vout[n].target.type(), false, "Unexpected tx out type");
      if (is_out_to_acc_precomp(subaddresses, boost::get<txout_to_key>(tx.vout[n].target).key, derivation, additional_derivations, n, hw::get_device(("default"))))
      {
        ++n_outs;
        CHECK_AND_ASSERT_MES(tx.vout[n].amount == 0, false, "Destination amount is not zero");
        rct::key Ctmp;
        crypto::secret_key scalar1;
        crypto::derivation_to_scalar(derivation, n, scalar1);
        rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
        rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1));
        rct::key C = tx.rct_signatures.outPk[n].mask;
        rct::addKeys2(Ctmp, ecdh_info.mask, ecdh_info.amount, rct::H);
        CHECK_AND_ASSERT_MES(rct::equalKeys(C, Ctmp), false, "Failed to decode amount");
        amount += rct::h2d(ecdh_info.amount);
      }
    }
    CHECK_AND_ASSERT_MES(n_outs == 1, false, "Not exactly 1 output was received");
    CHECK_AND_ASSERT_MES(amount == amount_paid, false, "Amount paid was not the expected amount");
  
    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_multisig_tx_valid_22_1_2::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 2, 1, {2}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_22_1_2_many_inputs::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 4, mixin, amount_paid, true, 2, 2, 1, {2}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_22_2_1::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 2, 2, {1}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_33_1_23::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 3, 3, 1, {2, 3}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_33_3_21::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 3, 3, 3, {2, 1}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_23_1_2::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 3, 1, {2}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_23_1_3::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 3, 1, {3}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_23_2_1::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 3, 2, {1}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_23_2_3::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 2, 3, 2, {3}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_45_1_234::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 4, 5, 1, {2, 3, 4}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_45_4_135_many_inputs::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 4, mixin, amount_paid, true, 4, 5, 4, {1, 3, 5}, NULL, NULL);
  }
  
  bool gen_multisig_tx_valid_89_3_1245789::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, true, 8, 9, 3, {1, 2, 4, 5, 7, 8, 9}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_22_1__no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 2, 2, 1, {}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_33_1__no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 3, 3, 1, {}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_33_1_2_no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 3, 3, 1, {2}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_33_1_3_no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 3, 3, 1, {3}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_23_1__no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 2, 3, 1, {}, NULL, NULL);
  }
  
  bool gen_multisig_tx_invalid_45_5_23_no_threshold::generate(std::vector<test_event_entry>& events) const
  {
    const size_t mixin = 4;
    const uint64_t amount_paid = 10000;
    return generate_with(events, 2, mixin, amount_paid, false, 4, 5, 5, {2, 3}, NULL, NULL);
  }
  