#!/usr/bin/php
<?php
use ParagonIE\Argon2Refiner\ParameterRecommender;
if (file_exists(dirname(__DIR__) . '/vendor/autoload.php')) {
// We're a standalone package
require_once dirname(__DIR__) . '/vendor/autoload.php';
} elseif (file_exists(dirname(__DIR__, 3) . '/autoload.php')) {
// We're installed as a library
require_once dirname(__DIR__, 3) . '/autoload.php';
} else {
// Trust the include path.
require_once 'vendor/autoload.php';
}
$ms = $argc > 1 ? $argv[1] : 500;
$recommender = (new ParameterRecommender($ms));
if ($argc > 2) {
$tolerance = (int) $argv[2];
if ($tolerance > 0) {
$recommender->setTolerance($tolerance);
}
}
$results = $recommender->runBenchmarks();
if (empty($results)) {
echo 'No parameters meet your target time window.', PHP_EOL;
exit(255);
}
$min = [
'diff' => PHP_INT_MAX,
'data' => [
'time_cost' => null,
'mem_cost' => null,
'bench_time' => PHP_INT_MAX
]
];
foreach ($results as $i => $res) {
$weightedDiff = $res['bench_time'] - $ms;
if ($weightedDiff > 0) {
// Apply a penalty to overshots
$weightedDiff *= 2;
} else {
$weightedDiff *= -1;
}
if ($weightedDiff < $min['diff']) {
$min = [
'diff' => $weightedDiff,
'data' => $res
];
}
$results[$i]['diff'] = $weightedDiff;
}
$reduced = $min['data']['mem_cost'] >> 10;
echo 'Recommended Argon2id parameters:', PHP_EOL;
echo "\t Memory cost (sodium): {$min['data']['mem_cost']}\n";
echo "\tMemory cost (password_hash): {$reduced}\n";
echo "\t Time cost: {$min['data']['time_cost']}\n\n";
echo "Real time: {$min['data']['bench_time']}ms\n";
|
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