c3c/benchmarks/stdlib/crypto/chacha20.c3

// Copyright (c) 2025 Zack Puhl <github@xmit.xyz>. All rights reserved.
// Use of this source code is governed by the MIT license
// a copy of which can be found in the LICENSE_STDLIB file.
module chacha20_benchmarks;
import std::crypto::chacha20;


fn void initialize_bench() @init
{
	set_benchmark_warmup_iterations(3);
	set_benchmark_max_iterations(1024);
}

const char[] KEY = x'98bef1469be7269837a45bfbc92a5a6ac762507cf96443bf33b96b1bd4c6f8f6';
const char[] NONCE = x'44e792d63335abb1582e9253';
const uint COUNTER = 42;

char[] one_megabyte = { [0..1024*1024] = 0xA5 };

// This doesn't test both encryption + decryption, because it's a symmetric operation that shares
//   a single common data transformation. Testing one limb is enough.
fn void gogo_chacha20() @benchmark
{
	chacha20::encrypt_mut(one_megabyte[..], KEY, NONCE, COUNTER);
}