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<?php
declare(strict_types=1);
/**
* This file is part of the mailserver-admin package.
* (c) Jeffrey Boehm <https://github.com/jeboehm/mailserver-admin>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace App\Service\DKIM;
use LogicException;
class KeyGenerationService
{
public const DIGEST_ALGORITHM = 'sha256';
private const KEY_LENGTH = 2048;
public function extractPublicKey(string $privateKey): string
$res = \openssl_pkey_get_private($privateKey);
if (false === $res) {
throw new LogicException('Cannot read private key.');
}
return \openssl_pkey_get_details($res)['key'];
public function createKeyPair(): KeyPair
$privateKey = '';
$res = \openssl_pkey_new(
[
'digest_alg' => self::DIGEST_ALGORITHM,
'private_key_bits' => self::KEY_LENGTH,
'private_key_type' => \OPENSSL_KEYTYPE_RSA,
]
);
\openssl_pkey_export($res, $privateKey);
return new KeyPair(\openssl_pkey_get_details($res)['key'], $privateKey);
jeboehm /
mailserver-admin
