lab/cacme/vendor/acmephp/ssl/PrivateKey.php
2024-08-05 22:57:28 +08:00

64 lines
1.7 KiB
PHP

<?php
/*
* This file is part of the Acme PHP project.
*
* (c) Titouan Galopin <galopintitouan@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace AcmePhp\Ssl;
use AcmePhp\Ssl\Exception\KeyFormatException;
use Webmozart\Assert\Assert;
/**
* Represent a SSL Private key.
*
* @author Jérémy Derussé <jeremy@derusse.com>
*/
class PrivateKey extends Key
{
/**
* {@inheritdoc}
*/
public function getResource()
{
if (!$resource = openssl_pkey_get_private($this->keyPEM)) {
throw new KeyFormatException(sprintf('Failed to convert key into resource: %s', openssl_error_string()));
}
return $resource;
}
public function getPublicKey(): PublicKey
{
$resource = $this->getResource();
if (!$details = openssl_pkey_get_details($resource)) {
throw new KeyFormatException(sprintf('Failed to extract public key: %s', openssl_error_string()));
}
// PHP 8 automatically frees the key instance and deprecates the function
if (\PHP_VERSION_ID < 80000) {
openssl_free_key($resource);
}
return new PublicKey($details['key']);
}
public static function fromDER(string $keyDER): self
{
Assert::stringNotEmpty($keyDER, __METHOD__.'::$keyDER should be a non-empty string. Got %s');
$der = base64_encode($keyDER);
$lines = str_split($der, 65);
array_unshift($lines, '-----BEGIN PRIVATE KEY-----');
$lines[] = '-----END PRIVATE KEY-----';
$lines[] = '';
return new self(implode("\n", $lines));
}
}