example-decrypt.php — UpdraftPlus: WP Backup & Migration Plugin 1.26.4

updraftplus / example-decrypt.php

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example-decrypt.php

46 lines

1	<?php
2
3	if (!defined('ABSPATH')) die('No direct access allowed');
4	// @codingStandardsIgnoreStart
5	/*
6	To dump the decrypted file using the given key on stdout, call:
7
8	rijndael_decrypt_file('../path/to/file.crypt' , 'mykey');
9
10	Thus, here are the easy instructions:
11
12	1) Add a line like the above into this PHP file (not inside these comments, but outside)
13	e.g.
14	rijndael_decrypt_file('/home/myself/myfile.crypt' , 'MYKEY');
15
16	2) Run this file (and make sure that includes/Rijndael.php is available, if you are moving this file around)
17	e.g.
18	php /home/myself/example-decrypt.php >output.sql.gz
19
20	3) You may then want to gunzip the resulting file to have a standard SQL file.
21	e.g.
22	gunzip output.sql.gz
23
24	*/
25	// @codingStandardsIgnoreEnd
26
27	/**
28	* An example of how to decrypt a file
29	*
30	* @param String $file Full path to file to decrypt
31	* @param String $key Key or salting to be used
32	*/
33	function rijndael_decrypt_file($file, $key) {
34
35	include_once(dirname(__FILE__).'/vendor/phpseclib/phpseclib/phpseclib/Crypt/Rijndael.php');
36
37	$rijndael = new Crypt_Rijndael();
38
39	$rijndael->setKey($key);
40
41	$ciphertext = file_get_contents($file);
42
43	print $rijndael->decrypt($ciphertext);// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- intentional binary output
44
45	}
46