| Server IP : 78.140.185.180 / Your IP : 216.73.216.178 Web Server : LiteSpeed System : Linux cpanel13.v.fozzy.com 4.18.0-513.11.1.lve.el8.x86_64 #1 SMP Thu Jan 18 16:21:02 UTC 2024 x86_64 User : builderbox ( 1072) PHP Version : 7.3.33 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : OFF | Pkexec : OFF Directory : /home/builderbox/www/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ |
Upload File : |
<?php
/**
* SSH2 Signature Handler
*
* PHP version 5
*
* Handles signatures in the format used by SSH2
*
* @category Crypt
* @package Common
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2016 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib3\Crypt\EC\Formats\Signature;
use phpseclib3\Math\BigInteger;
use phpseclib3\Common\Functions\Strings;
/**
* SSH2 Signature Handler
*
* @package Common
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
abstract class SSH2
{
/**
* Loads a signature
*
* @access public
* @param string $sig
* @return mixed
*/
public static function load($sig)
{
if (!is_string($sig)) {
return false;
}
$result = Strings::unpackSSH2('ss', $sig);
if ($result === false) {
return false;
}
list($type, $blob) = $result;
switch ($type) {
// see https://tools.ietf.org/html/rfc5656#section-3.1.2
case 'ecdsa-sha2-nistp256':
case 'ecdsa-sha2-nistp384':
case 'ecdsa-sha2-nistp521':
break;
default:
return false;
}
$result = Strings::unpackSSH2('ii', $blob);
if ($result === false) {
return false;
}
return [
'r' => $result[0],
's' => $result[1]
];
}
/**
* Returns a signature in the appropriate format
*
* @access public
* @param \phpseclib3\Math\BigInteger $r
* @param \phpseclib3\Math\BigInteger $s
* @param string $curve
* @return string
*/
public static function save(BigInteger $r, BigInteger $s, $curve)
{
switch ($curve) {
case 'secp256r1':
$curve = 'nistp256';
break;
case 'secp384r1':
$curve = 'nistp384';
break;
case 'secp521r1':
$curve = 'nistp521';
break;
default:
return false;
}
$blob = Strings::packSSH2('ii', $r, $s);
return Strings::packSSH2('ss', 'ecdsa-sha2-' . $curve, $blob);
}
}