72 lines
2.9 KiB
C++
72 lines
2.9 KiB
C++
// Copyright (c) 2017, 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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// Adapted from Python code by Sarang Noether
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#pragma once
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#ifndef MULTIEXP_H
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#define MULTIEXP_H
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#include <vector>
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#include "crypto/crypto.h"
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#include "rctTypes.h"
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#include "misc_log_ex.h"
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namespace rct
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{
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struct MultiexpData {
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rct::key scalar;
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ge_p3 point;
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MultiexpData() {}
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MultiexpData(const rct::key &s, const ge_p3 &p): scalar(s), point(p) {}
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MultiexpData(const rct::key &s, const rct::key &p): scalar(s)
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{
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CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&point, p.bytes) == 0, "ge_frombytes_vartime failed");
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}
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};
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struct straus_cached_data;
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struct pippenger_cached_data;
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rct::key bos_coster_heap_conv(std::vector<MultiexpData> data);
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rct::key bos_coster_heap_conv_robust(std::vector<MultiexpData> data);
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std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<MultiexpData> &data, size_t N =0);
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size_t straus_get_cache_size(const std::shared_ptr<straus_cached_data> &cache);
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rct::key straus(const std::vector<MultiexpData> &data, const std::shared_ptr<straus_cached_data> &cache = NULL, size_t STEP = 0);
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std::shared_ptr<pippenger_cached_data> pippenger_init_cache(const std::vector<MultiexpData> &data, size_t N =0);
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size_t pippenger_get_cache_size(const std::shared_ptr<pippenger_cached_data> &cache);
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size_t get_pippenger_c(size_t N);
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rct::key pippenger(const std::vector<MultiexpData> &data, const std::shared_ptr<pippenger_cached_data> &cache = NULL, size_t c = 0);
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}
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#endif
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