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// Copyright (c) 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
#pragma once
#include <vector>
#include "ringct/rctOps.h"
#include "ringct/multiexp.h"
enum test_multiexp_algorithm
{
multiexp_bos_coster,
multiexp_straus,
multiexp_straus_cached,
multiexp_pippenger,
multiexp_pippenger_cached,
};
template<test_multiexp_algorithm algorithm, size_t npoints, size_t c=0>
class test_multiexp
{
public:
static const size_t loop_count = npoints >= 1024 ? 10 : npoints < 256 ? 1000 : 100;
bool init()
{
data.resize(npoints);
res = rct::identity();
for (size_t n = 0; n < npoints; ++n)
{
data[n].scalar = rct::skGen();
rct::key point = rct::scalarmultBase(rct::skGen());
if (ge_frombytes_vartime(&data[n].point, point.bytes))
return false;
rct::key kn = rct::scalarmultKey(point, data[n].scalar);
res = rct::addKeys(res, kn);
}
straus_cache = rct::straus_init_cache(data);
pippenger_cache = rct::pippenger_init_cache(data);
return true;
}
bool test()
{
switch (algorithm)
{
case multiexp_bos_coster:
return res == bos_coster_heap_conv_robust(data);
case multiexp_straus:
return res == straus(data);
case multiexp_straus_cached:
return res == straus(data, straus_cache);
case multiexp_pippenger:
return res == pippenger(data, NULL, 0, c);
case multiexp_pippenger_cached:
return res == pippenger(data, pippenger_cache, 0, c);
default:
return false;
}
}
private:
std::vector<rct::MultiexpData> data;
std::shared_ptr<rct::straus_cached_data> straus_cache;
std::shared_ptr<rct::pippenger_cached_data> pippenger_cache;
rct::key res;
};
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