OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	05/19/2025 10:07:19 AM	rwxr-xr-x
📄 AnonymousSignature.php	700 bytes	05/19/2025 10:07:19 AM	rw-r--r--
📄 S3ExpressSignature.php	1.56 KB	05/19/2025 10:07:19 AM	rw-r--r--
📄 S3SignatureV4.php	4.06 KB	05/19/2025 10:07:19 AM	rw-r--r--
📄 SignatureInterface.php	1.43 KB	05/19/2025 10:07:19 AM	rw-r--r--
📄 SignatureProvider.php	5.3 KB	05/19/2025 10:07:19 AM	rw-r--r--
📄 SignatureTrait.php	1.34 KB	05/19/2025 10:07:19 AM	rw-r--r--
📄 SignatureV4.php	20.13 KB	05/19/2025 10:07:19 AM	rw-r--r--

Editing: SignatureTrait.php

<?php
namespace Aws\Signature;

/**
 * Provides signature calculation for SignatureV4.
 */
trait SignatureTrait
{
    /** @var array Cache of previously signed values */
    private $cache = [];

/** @var int Size of the hash cache */
    private $cacheSize = 0;
    
    private function createScope($shortDate, $region, $service)
    {
        return "$shortDate/$region/$service/aws4_request";
    }

private function getSigningKey($shortDate, $region, $service, $secretKey)
    {
        $k = $shortDate . '_' . $region . '_' . $service . '_' . $secretKey;

if (!isset($this->cache[$k])) {
            // Clear the cache when it reaches 50 entries
            if (++$this->cacheSize > 50) {
                $this->cache = [];
                $this->cacheSize = 0;
            }

$dateKey = hash_hmac(
                'sha256',
                $shortDate,
                "AWS4{$secretKey}",
                true
            );
            $regionKey = hash_hmac('sha256', $region, $dateKey, true);
            $serviceKey = hash_hmac('sha256', $service, $regionKey, true);
            $this->cache[$k] = hash_hmac(
                'sha256',
                'aws4_request',
                $serviceKey,
                true
            );
        }
        return $this->cache[$k];
    }
}