File: bin/benchmark

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File: bin/benchmark
Role: Example script
Content type: text/plain
Description: Example script
Class: Argon2 Refiner
Benchmark Argon2id hashing to recommend parameters
Author: By
Last change:
Date: 1 year ago
Size: 1,730 bytes
 

Contents

Class file image Download
#!/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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