1. Go to this page and download the library: Download steein/cryptopad library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
steein / cryptopad example snippets
$crypto = new \SteeinCrypt\CryptoPad();
//Test key and global key
$key = 'rUhidagNflImJ3wB';
$global_key = '%31.1e$i86e$f!8jz';