stripe / src / Cryptography / Cryption.php

Cryption.php in Stripe Payment Forms by WP Simple Pay – Accept Credit Card Payments + Subscriptions with Stripe trunk, at src/Cryptography/Cryption.php

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1	<?php
2	/**
3	* Cryptography: Cryption
4	*
5	* @package SimplePay
6	* @subpackage Core
7	* @copyright Copyright (c) 2022, Sandhills Development, LLC
8	* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License
9	* @since 4.12.1
10	*/
11
12	namespace SimplePay\Core\Cryptography;
13
14	use Exception;
15
16	/**
17	* Cryption class.
18	*
19	* @since 4.12.1
20	*/
21	class Cryption {
22
23	/**
24	* Encrypts data using RSA public key.
25	*
26	* @param string $data Data to encrypt.
27	* @return string\|bool Base64 encoded encrypted data or false on failure.
28	*/
29	public function encrypt( $data ) {
30	// Check if openssl is enabled.
31	if ( ! extension_loaded( 'openssl' ) ) {
32	return false;
33	}
34
35	try {
36	// Get the public key directly from the file.
37	$public_key = file_get_contents(
38	plugin_dir_path( SIMPLE_PAY_MAIN_FILE ) . 'data/etc/public_key.pem' // @phpstan-ignore-line
39	);
40
41	if ( false === $public_key ) {
42	return false;
43	}
44
45	// Encrypt data with OAEP padding using OpenSSL.
46	$encrypted_data = '';
47	$encryption_success = openssl_public_encrypt(
48	$data,
49	$encrypted_data,
50	$public_key,
51	OPENSSL_PKCS1_OAEP_PADDING // Set padding to OAEP.
52	);
53
54	if ( ! $encryption_success ) {
55	return false;
56	}
57
58	// Encode the encrypted data in Base64 to send as a string.
59	$base64_encrypted_data = base64_encode( $encrypted_data );
60
61	// Return base64 encoded encrypted data.
62	return $base64_encrypted_data;
63	} catch ( Exception $e ) {
64	return false;
65	}
66	}
67
68	/**
69	* Check if openssl is enabled.
70	*
71	* @return bool
72	*/
73	public function is_openssl_enabled() {
74	return extension_loaded( 'openssl' );
75	}
76	}
77