ellswift.cpp

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// Copyright (c) 2022-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include <bench/bench.h>
#include <key.h>
#include <pubkey.h>
#include <random.h>
#include <span.h>
#include <uint256.h>
#include <util/check.h>
 
#include <algorithm>
#include <span>
 
static void EllSwiftCreate(benchmark::Bench& bench)
{
    ECC_Context ecc_context{};
 
    CKey key = GenerateRandomKey();
    uint256 entropy = GetRandHash();
 
    bench.batch(1).unit("pubkey").run([&] {
        auto ret = key.EllSwiftCreate(MakeByteSpan(entropy));
        /* Use the first 32 bytes of the ellswift encoded public key as next private key. */
        key.Set(ret.data(), ret.data() + 32, true);
        assert(key.IsValid());
        /* Use the last 32 bytes of the ellswift encoded public key as next entropy. */
        std::copy(ret.begin() + 32, ret.begin() + 64, MakeWritableByteSpan(entropy).begin());
    });
}
 
BENCHMARK(EllSwiftCreate);