worker / src / MWP / Crypter / PhpSecLibCrypter.php

PhpSecLibCrypter.php in ManageWP Worker 4.9.36, at src/MWP/Crypter/PhpSecLibCrypter.php

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1	<?php
2	/*
3	* This file is part of the ManageWP Worker plugin.
4	*
5	* (c) ManageWP LLC <[email protected]>
6	*
7	* For the full copyright and license information, please view the LICENSE
8	* file that was distributed with this source code.
9	*/
10
11	class MWP_Crypter_PhpSecLibCrypter implements MWP_Crypter_Interface
12	{
13	public function publicEncrypt($data, $publicKey)
14	{
15	$this->requireLibrary();
16
17	$rsa = new Crypt_RSA();
18	$rsa->setEncryptionMode(CRYPT_RSA_SIGNATURE_PKCS1);
19	$rsa->loadKey($publicKey, CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
20
21	$errorCatcher = new MWP_Debug_ErrorCatcher();
22	$errorCatcher->register();
23	$encrypted = $rsa->encrypt($data);
24	$error = $errorCatcher->yieldErrorMessage(true);
25
26	if ($encrypted === false && $error !== null) {
27	throw new MWP_Worker_Exception(MWP_Worker_Exception::PHPSECLIB_ENCRYPT_ERROR, "Error while trying to use OpenSSL to encrypt a message.", array(
28	'error' => $error,
29	));
30	}
31
32	return $encrypted;
33	}
34
35	public function publicDecrypt($data, $publicKey)
36	{
37	$this->requireLibrary();
38
39	$rsa = new Crypt_RSA();
40	$rsa->setEncryptionMode(CRYPT_RSA_SIGNATURE_PKCS1);
41	$rsa->loadKey($publicKey, CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
42
43	$errorCatcher = new MWP_Debug_ErrorCatcher();
44	$errorCatcher->register();
45	$decrypted = $rsa->decrypt($data);
46	$error = $errorCatcher->yieldErrorMessage(true);
47
48	// "Decryption error" is generated by the library when the public key is not correct.
49	if ($decrypted === false && $error !== 'Decryption error') {
50	throw new MWP_Worker_Exception(MWP_Worker_Exception::PHPSECLIB_DECRYPT_ERROR, "Error while trying to use OpenSSL to decrypt a message.", array(
51	'error' => $error,
52	));
53	}
54
55	return $decrypted === false ? null : $decrypted;
56	}
57
58	private function requireLibrary()
59	{
60	if (class_exists('Crypt_RSA', false)) {
61	return;
62	}
63
64	require_once dirname(__FILE__).'/../../PHPSecLib/Crypt/RSA.php';
65	}
66	}
67