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<?php
/**
* PublicKeyLoader
*
* Returns a PublicKey or PrivateKey object.
*
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2009 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib3\Crypt;
use phpseclib3\Crypt\Common\AsymmetricKey;
use phpseclib3\Crypt\Common\PrivateKey;
use phpseclib3\Crypt\Common\PublicKey;
use phpseclib3\Exception\NoKeyLoadedException;
use phpseclib3\File\X509;
/**
* PublicKeyLoader
*
* @author Jim Wigginton <terrafrost@php.net>
*/
abstract class PublicKeyLoader
{
/**
* Loads a public or private key
*
* @return AsymmetricKey
* @param string|array $key
* @param string $password optional
* @throws NoKeyLoadedException if key is not valid
*/
public static function load($key, $password = false)
{
try {
return EC::load($key, $password);
} catch (NoKeyLoadedException $e) {
}
try {
return RSA::load($key, $password);
} catch (NoKeyLoadedException $e) {
}
try {
return DSA::load($key, $password);
} catch (NoKeyLoadedException $e) {
}
try {
$x509 = new X509();
$x509->loadX509($key);
$key = $x509->getPublicKey();
if ($key) {
return $key;
}
} catch (\Exception $e) {
}
throw new NoKeyLoadedException('Unable to read key');
}
/**
* Loads a private key
*
* @return PrivateKey
* @param string|array $key
* @param string $password optional
*/
public static function loadPrivateKey($key, $password = false)
{
$key = self::load($key, $password);
if (!$key instanceof PrivateKey) {
throw new NoKeyLoadedException('The key that was loaded was not a private key');
}
return $key;
}
/**
* Loads a public key
*
* @return PublicKey
* @param string|array $key
*/
public static function loadPublicKey($key)
{
$key = self::load($key);
if (!$key instanceof PublicKey) {
throw new NoKeyLoadedException('The key that was loaded was not a public key');
}
return $key;
}
/**
* Loads parameters
*
* @return AsymmetricKey
* @param string|array $key
*/
public static function loadParameters($key)
{
$key = self::load($key);
if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
throw new NoKeyLoadedException('The key that was loaded was not a parameter');
}
return $key;
}
}
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