poly1305.cpp

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// Copyright (c) 2019 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 <iostream>
 
#include <bench/bench.h>
#include <crypto/poly1305.h>
 
#include <span.h>
 
/* Number of bytes to process per iteration */
static constexpr uint64_t BUFFER_SIZE_TINY = 64;
static constexpr uint64_t BUFFER_SIZE_SMALL = 256;
static constexpr uint64_t BUFFER_SIZE_LARGE = 1024 * 1024;
 
static void POLY1305(benchmark::Bench &bench, size_t buffersize) {
    std::vector<std::byte> tag(Poly1305::TAGLEN, {});
    std::vector<std::byte> key(Poly1305::KEYLEN, {});
    std::vector<std::byte> in(buffersize, {});
    bench.batch(in.size()).unit("byte").run(
        [&] { Poly1305{key}.Update(in).Finalize(tag); });
}
 
static void POLY1305_64BYTES(benchmark::Bench &bench) {
    POLY1305(bench, BUFFER_SIZE_TINY);
}
 
static void POLY1305_256BYTES(benchmark::Bench &bench) {
    POLY1305(bench, BUFFER_SIZE_SMALL);
}
 
static void POLY1305_1MB(benchmark::Bench &bench) {
    POLY1305(bench, BUFFER_SIZE_LARGE);
}
 
BENCHMARK(POLY1305_64BYTES);
BENCHMARK(POLY1305_256BYTES);
BENCHMARK(POLY1305_1MB);