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246 lines
7.7 KiB
C++
246 lines
7.7 KiB
C++
// Copyright (c) 2017-2018, 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 "gtest/gtest.h"
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#include "string_tools.h"
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#include "ringct/rctOps.h"
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#include "ringct/rctSigs.h"
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#include "ringct/bulletproofs.h"
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#include "device/device.hpp"
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#include "misc_log_ex.h"
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TEST(bulletproofs, valid_zero)
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{
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rct::Bulletproof proof = bulletproof_PROVE(0, rct::skGen());
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ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
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}
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TEST(bulletproofs, valid_max)
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{
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rct::Bulletproof proof = bulletproof_PROVE(0xffffffffffffffff, rct::skGen());
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ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
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}
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TEST(bulletproofs, valid_random)
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{
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for (int n = 0; n < 8; ++n)
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{
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rct::Bulletproof proof = bulletproof_PROVE(crypto::rand<uint64_t>(), rct::skGen());
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ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
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}
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}
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TEST(bulletproofs, valid_multi_random)
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{
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for (int n = 0; n < 8; ++n)
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{
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size_t outputs = 2 + n;
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std::vector<uint64_t> amounts;
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rct::keyV gamma;
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for (size_t i = 0; i < outputs; ++i)
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{
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amounts.push_back(crypto::rand<uint64_t>());
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gamma.push_back(rct::skGen());
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}
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rct::Bulletproof proof = bulletproof_PROVE(amounts, gamma);
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ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
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}
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}
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TEST(bulletproofs, multi_splitting)
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{
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rct::ctkeyV sc, pc;
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rct::ctkey sctmp, pctmp;
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std::vector<unsigned int> index;
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std::vector<uint64_t> inamounts, outamounts;
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std::tie(sctmp, pctmp) = rct::ctskpkGen(6000);
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sc.push_back(sctmp);
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pc.push_back(pctmp);
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inamounts.push_back(6000);
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index.push_back(1);
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std::tie(sctmp, pctmp) = rct::ctskpkGen(7000);
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sc.push_back(sctmp);
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pc.push_back(pctmp);
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inamounts.push_back(7000);
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index.push_back(1);
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const int mixin = 3, max_outputs = 16;
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for (int n_outputs = 1; n_outputs <= max_outputs; ++n_outputs)
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{
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std::vector<uint64_t> outamounts;
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rct::keyV amount_keys;
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rct::keyV destinations;
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rct::key Sk, Pk;
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uint64_t available = 6000 + 7000;
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uint64_t amount;
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rct::ctkeyM mixRing(sc.size());
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//add output
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for (size_t i = 0; i < n_outputs; ++i)
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{
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amount = rct::randXmrAmount(available);
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outamounts.push_back(amount);
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amount_keys.push_back(rct::hash_to_scalar(rct::zero()));
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rct::skpkGen(Sk, Pk);
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destinations.push_back(Pk);
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available -= amount;
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}
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for (size_t i = 0; i < sc.size(); ++i)
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{
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for (size_t j = 0; j <= mixin; ++j)
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{
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if (j == 1)
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mixRing[i].push_back(pc[i]);
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else
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mixRing[i].push_back({rct::scalarmultBase(rct::skGen()), rct::scalarmultBase(rct::skGen())});
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}
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}
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rct::ctkeyV outSk;
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rct::rctSig s = rct::genRctSimple(rct::zero(), sc, destinations, inamounts, outamounts, available, mixRing, amount_keys, NULL, NULL, index, outSk, rct::RangeProofPaddedBulletproof, hw::get_device("default"));
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ASSERT_TRUE(rct::verRctSimple(s));
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for (size_t i = 0; i < n_outputs; ++i)
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{
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rct::key mask;
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rct::decodeRctSimple(s, amount_keys[i], i, mask, hw::get_device("default"));
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ASSERT_TRUE(mask == outSk[i].mask);
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}
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}
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}
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TEST(bulletproofs, valid_aggregated)
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{
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static const size_t N_PROOFS = 8;
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std::vector<rct::Bulletproof> proofs(N_PROOFS);
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for (size_t n = 0; n < N_PROOFS; ++n)
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{
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size_t outputs = 2 + n;
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std::vector<uint64_t> amounts;
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rct::keyV gamma;
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for (size_t i = 0; i < outputs; ++i)
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{
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amounts.push_back(crypto::rand<uint64_t>());
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gamma.push_back(rct::skGen());
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}
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proofs[n] = bulletproof_PROVE(amounts, gamma);
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}
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ASSERT_TRUE(rct::bulletproof_VERIFY(proofs));
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}
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TEST(bulletproofs, invalid_8)
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{
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rct::key invalid_amount = rct::zero();
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invalid_amount[8] = 1;
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rct::Bulletproof proof = bulletproof_PROVE(invalid_amount, rct::skGen());
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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}
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TEST(bulletproofs, invalid_31)
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{
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rct::key invalid_amount = rct::zero();
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invalid_amount[31] = 1;
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rct::Bulletproof proof = bulletproof_PROVE(invalid_amount, rct::skGen());
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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}
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TEST(bulletproofs, invalid_gamma_0)
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{
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rct::key invalid_amount = rct::zero();
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invalid_amount[8] = 1;
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rct::key gamma = rct::zero();
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rct::Bulletproof proof = bulletproof_PROVE(invalid_amount, gamma);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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}
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static const char * const torsion_elements[] =
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{
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"c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac03fa",
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"0000000000000000000000000000000000000000000000000000000000000000",
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"26e8958fc2b227b045c3f489f2ef98f0d5dfac05d3c63339b13802886d53fc85",
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"ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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"26e8958fc2b227b045c3f489f2ef98f0d5dfac05d3c63339b13802886d53fc05",
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"0000000000000000000000000000000000000000000000000000000000000080",
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"c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac037a",
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};
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TEST(bulletproofs, invalid_torsion)
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{
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rct::Bulletproof proof = bulletproof_PROVE(7329838943733, rct::skGen());
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ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
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for (const auto &xs: torsion_elements)
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{
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rct::key x;
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ASSERT_TRUE(epee::string_tools::hex_to_pod(xs, x));
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ASSERT_FALSE(rct::isInMainSubgroup(x));
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for (auto &k: proof.V)
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{
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const rct::key org_k = k;
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rct::addKeys(k, org_k, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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k = org_k;
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}
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for (auto &k: proof.L)
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{
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const rct::key org_k = k;
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rct::addKeys(k, org_k, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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k = org_k;
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}
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for (auto &k: proof.R)
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{
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const rct::key org_k = k;
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rct::addKeys(k, org_k, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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k = org_k;
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}
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const rct::key org_A = proof.A;
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rct::addKeys(proof.A, org_A, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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proof.A = org_A;
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const rct::key org_S = proof.S;
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rct::addKeys(proof.S, org_S, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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proof.S = org_S;
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const rct::key org_T1 = proof.T1;
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rct::addKeys(proof.T1, org_T1, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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proof.T1 = org_T1;
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const rct::key org_T2 = proof.T2;
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rct::addKeys(proof.T2, org_T2, x);
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ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
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proof.T2 = org_T2;
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}
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}
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