mirror of
https://github.com/friendica/friendica
synced 2025-04-28 23:04:24 +02:00
77 lines
2.5 KiB
PHP
77 lines
2.5 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (C) 2010-2024, the Friendica project
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
namespace Friendica\Protocol\Salmon\Format;
|
|
|
|
use Friendica\Util\Strings;
|
|
use phpseclib3\Math\BigInteger;
|
|
|
|
/**
|
|
* This custom public RSA key format class is meant to be used with the \phpseclib3\Crypto\RSA::addFileFormat method.
|
|
*
|
|
* It handles Salmon's specific magic key string starting with "RSA." and which MIME type is application/magic-key or
|
|
* application/magic-public-key
|
|
*
|
|
* @see https://web.archive.org/web/20160506073138/http://salmon-protocol.googlecode.com:80/svn/trunk/draft-panzer-magicsig-01.html#anchor13
|
|
*/
|
|
class Magic
|
|
{
|
|
public static function load($key, $password = ''): array
|
|
{
|
|
if (!is_string($key)) {
|
|
throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
|
|
}
|
|
|
|
$key_info = explode('.', $key);
|
|
|
|
if (count($key_info) !== 3) {
|
|
throw new \UnexpectedValueException('Key should have three components separated by periods');
|
|
}
|
|
|
|
if ($key_info[0] !== 'RSA') {
|
|
throw new \UnexpectedValueException('Key first component should be "RSA"');
|
|
}
|
|
|
|
if (preg_match('#[+/]#', $key_info[1])
|
|
|| preg_match('#[+/]#', $key_info[1])
|
|
) {
|
|
throw new \UnexpectedValueException('Wrong encoding, expecting Base64URLencoding');
|
|
}
|
|
|
|
$m = Strings::base64UrlDecode($key_info[1]);
|
|
$e = Strings::base64UrlDecode($key_info[2]);
|
|
|
|
if (!$m || !$e) {
|
|
throw new \UnexpectedValueException('Base64 decoding produced an error');
|
|
}
|
|
|
|
return [
|
|
'modulus' => new BigInteger($m, 256),
|
|
'publicExponent' => new BigInteger($e, 256),
|
|
'isPublicKey' => true,
|
|
];
|
|
}
|
|
|
|
public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = []): string
|
|
{
|
|
return 'RSA.' . Strings::base64UrlEncode($n->toBytes(), true) . '.' . Strings::base64UrlEncode($e->toBytes(), true);
|
|
}
|
|
}
|