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<?php
/*
* This file is part of the ManageWP Worker plugin.
*
* (c) ManageWP LLC <contact@managewp.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class MWP_Crypter_PhpSecLibCrypter implements MWP_Crypter_Interface
{
public function publicEncrypt($data, $publicKey)
{
$this->requireLibrary();
$rsa = new Crypt_RSA();
$rsa->setEncryptionMode(CRYPT_RSA_SIGNATURE_PKCS1);
$rsa->loadKey($publicKey, CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
$errorCatcher = new MWP_Debug_ErrorCatcher();
$errorCatcher->register();
$encrypted = $rsa->encrypt($data);
$error = $errorCatcher->yieldErrorMessage(true);
if ($encrypted === false && $error !== null) {
throw new MWP_Worker_Exception(MWP_Worker_Exception::PHPSECLIB_ENCRYPT_ERROR, "Error while trying to use OpenSSL to encrypt a message.", array(
'error' => $error,
));
}
return $encrypted;
}
public function publicDecrypt($data, $publicKey)
{
$this->requireLibrary();
$rsa = new Crypt_RSA();
$rsa->setEncryptionMode(CRYPT_RSA_SIGNATURE_PKCS1);
$rsa->loadKey($publicKey, CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
$errorCatcher = new MWP_Debug_ErrorCatcher();
$errorCatcher->register();
$decrypted = $rsa->decrypt($data);
$error = $errorCatcher->yieldErrorMessage(true);
// "Decryption error" is generated by the library when the public key is not correct.
if ($decrypted === false && $error !== 'Decryption error') {
throw new MWP_Worker_Exception(MWP_Worker_Exception::PHPSECLIB_DECRYPT_ERROR, "Error while trying to use OpenSSL to decrypt a message.", array(
'error' => $error,
));
}
return $decrypted === false ? null : $decrypted;
}
private function requireLibrary()
{
if (class_exists('Crypt_RSA', false)) {
return;
}
require_once dirname(__FILE__).'/../../PHPSecLib/Crypt/RSA.php';
}
}