ellswift.cpp

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// Copyright (c) 2022-2023 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 <random.h>
 
static void EllSwiftCreate(benchmark::Bench& bench)
{
    ECC_Start();
 
    CKey key;
    key.MakeNewKey(true);
 
    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(UCharCast(ret.data()), UCharCast(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());
    });
 
    ECC_Stop();
}
 
BENCHMARK(EllSwiftCreate, benchmark::PriorityLevel::HIGH);