monero/tests/unit_tests/curve_trees.h

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// Copyright (c) 2014, 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.
#pragma once
#include "fcmp/curve_trees.h"
#include "fcmp/tower_cycle.h"
#include "misc_log_ex.h"
using Helios = fcmp::curve_trees::Helios;
using Selene = fcmp::curve_trees::Selene;
using CurveTreesV1 = fcmp::curve_trees::CurveTreesV1;
// Helper class that can access the private members of the CurveTrees class
class CurveTreesUnitTest
{
public:
CurveTreesUnitTest(CurveTreesV1 &curve_trees): m_curve_trees(curve_trees) {};
//member structs
public:
template<typename C>
using Layer = std::vector<typename C::Point>;
// A complete tree, useful for testing (don't want to keep the whole tree in memory during normal operation)
struct Tree final
{
std::vector<CurveTreesV1::LeafTuple> leaves;
std::vector<Layer<Helios>> c1_layers;
std::vector<Layer<Selene>> c2_layers;
};
//public member functions
public:
// Read the in-memory tree and get data from last chunks from each layer
CurveTreesV1::LastChunks get_last_chunks(const Tree &tree);
// Use the tree extension to extend the in-memory tree
void extend_tree(const CurveTreesV1::TreeExtension &tree_extension, Tree &tree_inout);
// Validate the in-memory tree by re-hashing every layer, starting from root and working down to leaf layer
bool validate_tree(const Tree &tree);
// logging helpers
void log_last_chunks(const CurveTreesV1::LastChunks &last_chunks);
void log_tree_extension(const CurveTreesV1::TreeExtension &tree_extension);
void log_tree(const CurveTreesUnitTest::Tree &tree);
private:
CurveTreesV1 &m_curve_trees;
};
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const std::vector<CurveTreesV1::LeafTuple> generate_random_leaves(const CurveTreesV1 &curve_trees,
const std::size_t num_leaves);
// TODO: use static constant generators and hash init points
const std::size_t HELIOS_GENERATORS_LEN = 128;
const std::size_t SELENE_GENERATORS_LEN = 256;
// https://github.com/kayabaNerve/fcmp-plus-plus/blob
// /b2742e86f3d18155fd34dd1ed69cb8f79b900fce/crypto/fcmps/src/tests.rs#L81-L82
const std::size_t HELIOS_CHUNK_WIDTH = 38;
const std::size_t SELENE_CHUNK_WIDTH = 18;
const Helios::Generators HELIOS_GENERATORS = fcmp::tower_cycle::random_helios_generators(HELIOS_GENERATORS_LEN);
const Selene::Generators SELENE_GENERATORS = fcmp::tower_cycle::random_selene_generators(SELENE_GENERATORS_LEN);
const Helios::Point HELIOS_HASH_INIT_POINT = fcmp::tower_cycle::random_helios_hash_init_point();
const Selene::Point SELENE_HASH_INIT_POINT = fcmp::tower_cycle::random_selene_hash_init_point();