Merge pull request #6739

1660fe8a2 draft support of clsag (cslashm)
703944c4d CLSAG device support (Sarang Noether)
aff87b5f6 Added balance check to MLSAG/CLSAG performance tests (Sarang Noether)
f964a92c5 Updated MLSAG and CLSAG tests for consistency (Sarang Noether)
5aa1575e9 CLSAG verification performance test (Sarang Noether)
641b08c92 CLSAG optimizations (Sarang Noether)
82ee01699 Integrate CLSAGs into monero (moneromooo-monero)
8cd1d6df8 unit_tests: add ge_triple_scalarmult_base_vartime test (moneromooo-monero)
4b328c661 CLSAG signatures (Sarang Noether)

1 files changed, 224 insertions, 0 deletions

diff --git a/tests/core_tests/rct2.cpp b/tests/core_tests/rct2.cpp
new file mode 100644
index 000000000..55d700429
--- /dev/null
+++ b/tests/core_tests/rct2.cpp
@@ -0,0 +1,224 @@
+// Copyright (c) 2014-2019, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#include "ringct/rctSigs.h"
+#include "ringct/bulletproofs.h"
+#include "chaingen.h"
+#include "rct2.h"
+#include "device/device.hpp"
+
+using namespace epee;
+using namespace crypto;
+using namespace cryptonote;
+
+//----------------------------------------------------------------------------------------------------------------------
+// Tests
+
+bool gen_rct2_tx_validation_base::generate_with(std::vector<test_event_entry>& events,
+    size_t mixin, size_t n_txes, const uint64_t *amounts_paid, bool valid, const rct::RCTConfig *rct_config, uint8_t hf_version,
+    const std::function<bool(std::vector<tx_source_entry> &sources, std::vector<tx_destination_entry> &destinations, size_t tx_idx)> &pre_tx,
+    const std::function<bool(transaction &tx, size_t tx_idx)> &post_tx) const
+{
+  uint64_t ts_start = 1338224400;
+
+  GENERATE_ACCOUNT(miner_account);
+  MAKE_GENESIS_BLOCK(events, blk_0, miner_account, ts_start);
+
+  // create 12 miner accounts, and have them mine the next 12 blocks
+  cryptonote::account_base miner_accounts[12];
+  const cryptonote::block *prev_block = &blk_0;
+  cryptonote::block blocks[12 + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW];
+  for (size_t n = 0; n < 12; ++n) {
+    miner_accounts[n].generate();
+    CHECK_AND_ASSERT_MES(generator.construct_block_manually(blocks[n], *prev_block, miner_accounts[n],
+        test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_hf_version,
+        2, 2, prev_block->timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
+          crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 0, 2),
+        false, "Failed to generate block");
+    events.push_back(blocks[n]);
+    prev_block = blocks + n;
+    LOG_PRINT_L0("Initial miner tx " << n << ": " << obj_to_json_str(blocks[n].miner_tx));
+  }
+
+  // rewind
+  cryptonote::block blk_r, blk_last;
+  {
+    blk_last = blocks[11];
+    for (size_t i = 0; i < CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW; ++i)
+    {
+      CHECK_AND_ASSERT_MES(generator.construct_block_manually(blocks[12+i], blk_last, miner_account,
+          test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_hf_version,
+          2, 2, blk_last.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
+          crypto::hash(), 0, transaction(), std::vector<crypto::hash>(), 0, 0, 2),
+          false, "Failed to generate block");
+      events.push_back(blocks[12+i]);
+      blk_last = blocks[12+i];
+    }
+    blk_r = blk_last;
+  }
+
+  // create 4 txes from these miners in another block, to generate some rct outputs
+  std::vector<transaction> rct_txes;
+  cryptonote::block blk_txes;
+  std::vector<crypto::hash> starting_rct_tx_hashes;
+  static const uint64_t input_amounts_available[] = {5000000000000, 30000000000000, 100000000000, 80000000000};
+  for (size_t n = 0; n < n_txes; ++n)
+  {
+    std::vector<tx_source_entry> sources;
+
+    sources.resize(1);
+    tx_source_entry& src = sources.back();
+
+    const uint64_t needed_amount = input_amounts_available[n];
+    src.amount = input_amounts_available[n];
+    size_t real_index_in_tx = 0;
+    for (size_t m = 0; m <= mixin; ++m) {
+      size_t index_in_tx = 0;
+      for (size_t i = 0; i < blocks[m].miner_tx.vout.size(); ++i)
+        if (blocks[m].miner_tx.vout[i].amount == needed_amount)
+          index_in_tx = i;
+      CHECK_AND_ASSERT_MES(blocks[m].miner_tx.vout[index_in_tx].amount == needed_amount, false, "Expected amount not found");
+      src.push_output(m, boost::get<txout_to_key>(blocks[m].miner_tx.vout[index_in_tx].target).key, src.amount);
+      if (m == n)
+        real_index_in_tx = index_in_tx;
+    }
+    src.real_out_tx_key = cryptonote::get_tx_pub_key_from_extra(blocks[n].miner_tx);
+    src.real_output = n;
+    src.real_output_in_tx_index = real_index_in_tx;
+    src.mask = rct::identity();
+    src.rct = false;
+
+    //fill outputs entry
+    tx_destination_entry td;
+    td.addr = miner_accounts[n].get_keys().m_account_address;
+    std::vector<tx_destination_entry> destinations;
+    for (int o = 0; amounts_paid[o] != (uint64_t)-1; ++o)
+    {
+      td.amount = amounts_paid[o];
+      destinations.push_back(td);
+    }
+
+    if (pre_tx && !pre_tx(sources, destinations, n))
+    {
+      MDEBUG("pre_tx returned failure");
+      return 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[miner_accounts[n].get_keys().m_account_address.m_spend_public_key] = {0,0};
+    rct_txes.resize(rct_txes.size() + 1);
+    bool r = construct_tx_and_get_tx_key(miner_accounts[n].get_keys(), subaddresses, sources, destinations, cryptonote::account_public_address{}, std::vector<uint8_t>(), rct_txes.back(), 0, tx_key, additional_tx_keys, true, rct_config[n]);
+    CHECK_AND_ASSERT_MES(r, false, "failed to construct transaction");
+
+    if (post_tx && !post_tx(rct_txes.back(), n))
+    {
+      MDEBUG("post_tx returned failure");
+      return false;
+    }
+
+    //events.push_back(rct_txes.back());
+    starting_rct_tx_hashes.push_back(get_transaction_hash(rct_txes.back()));
+    LOG_PRINT_L0("Test tx: " << obj_to_json_str(rct_txes.back()));
+
+    for (int o = 0; amounts_paid[o] != (uint64_t)-1; ++o)
+    {
+      crypto::key_derivation derivation;
+      bool r = crypto::generate_key_derivation(destinations[o].addr.m_view_public_key, tx_key, derivation);
+      CHECK_AND_ASSERT_MES(r, false, "Failed to generate key derivation");
+      crypto::secret_key amount_key;
+      crypto::derivation_to_scalar(derivation, o, amount_key);
+      rct::key rct_tx_mask;
+      const uint8_t type = rct_txes.back().rct_signatures.type;
+      if (type == rct::RCTTypeSimple || type == rct::RCTTypeBulletproof || type == rct::RCTTypeBulletproof2 || type == rct::RCTTypeCLSAG)
+        rct::decodeRctSimple(rct_txes.back().rct_signatures, rct::sk2rct(amount_key), o, rct_tx_mask, hw::get_device("default"));
+      else
+        rct::decodeRct(rct_txes.back().rct_signatures, rct::sk2rct(amount_key), o, rct_tx_mask, hw::get_device("default"));
+    }
+
+    while (amounts_paid[0] != (size_t)-1)
+      ++amounts_paid;
+    ++amounts_paid;
+  }
+  if (!valid)
+    DO_CALLBACK(events, "mark_invalid_tx");
+  events.push_back(rct_txes);
+
+  CHECK_AND_ASSERT_MES(generator.construct_block_manually(blk_txes, blk_last, miner_account,
+      test_generator::bf_major_ver | test_generator::bf_minor_ver | test_generator::bf_timestamp | test_generator::bf_tx_hashes | test_generator::bf_hf_version | test_generator::bf_max_outs,
+      hf_version, hf_version, blk_last.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN * 2, // v2 has blocks twice as long
+      crypto::hash(), 0, transaction(), starting_rct_tx_hashes, 0, 6, 10),
+      false, "Failed to generate block");
+  if (!valid)
+    DO_CALLBACK(events, "mark_invalid_block");
+  events.push_back(blk_txes);
+  blk_last = blk_txes;
+
+  return true;
+}
+
+bool gen_rct2_tx_validation_base::check_bp(const cryptonote::transaction &tx, size_t tx_idx, const size_t *sizes, const char *context) const
+{
+  DEFINE_TESTS_ERROR_CONTEXT(context);
+  CHECK_TEST_CONDITION(tx.version >= 2);
+  CHECK_TEST_CONDITION(rct::is_rct_bulletproof(tx.rct_signatures.type));
+  size_t n_sizes = 0, n_amounts = 0;
+  for (size_t n = 0; n < tx_idx; ++n)
+  {
+    while (sizes[0] != (size_t)-1)
+      ++sizes;
+    ++sizes;
+  }
+  while (sizes[n_sizes] != (size_t)-1)
+    n_amounts += sizes[n_sizes++];
+  CHECK_TEST_CONDITION(tx.rct_signatures.p.bulletproofs.size() == n_sizes);
+  CHECK_TEST_CONDITION(rct::n_bulletproof_max_amounts(tx.rct_signatures.p.bulletproofs) == n_amounts);
+  for (size_t n = 0; n < n_sizes; ++n)
+    CHECK_TEST_CONDITION(rct::n_bulletproof_max_amounts(tx.rct_signatures.p.bulletproofs[n]) == sizes[n]);
+  return true;
+}
+
+bool gen_rct2_tx_clsag_malleability::generate(std::vector<test_event_entry>& events) const
+{
+  DEFINE_TESTS_ERROR_CONTEXT("gen_rct_tx_clsag_malleability");
+  const int mixin = 10;
+  const uint64_t amounts_paid[] = {5000, 5000, (uint64_t)-1};
+  const rct::RCTConfig rct_config[] = { { rct::RangeProofPaddedBulletproof, 3 } };
+  return generate_with(events, mixin, 1, amounts_paid, false, rct_config, HF_VERSION_CLSAG + 1, NULL, [&](cryptonote::transaction &tx, size_t tx_idx) {
+    CHECK_TEST_CONDITION(tx.version == 2);
+    CHECK_TEST_CONDITION(tx.rct_signatures.type == rct::RCTTypeCLSAG);
+    CHECK_TEST_CONDITION(!tx.rct_signatures.p.CLSAGs.empty());
+    rct::key x;
+    CHECK_TEST_CONDITION(epee::string_tools::hex_to_pod("c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac03fa", x));
+    tx.rct_signatures.p.CLSAGs[0].D = rct::addKeys(tx.rct_signatures.p.CLSAGs[0].D, x);
+    return true;
+  });
+}