cViY2ynr

1<?php
2/**
3     * simple method to encrypt or decrypt a plain text string
4     * initialization vector(IV) has to be the same when encrypting and decrypting
5     *
6     * @param string $action: can be 'encrypt' or 'decrypt'
7     * @param string $string: string to encrypt or decrypt
8     *
9     * @return string
10     */
11      function encrypt_decrypt($action, $string) {
12        $output = false;
13        $encrypt_method = "AES-256-CBC";
14        $secret_key = '!@#wefvb#$@%';
15        $secret_iv = 'AgHyE5$3HoPu*&7';
16        // hash
17        $key = hash('sha256', $secret_key);
18
19        // iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
20        $iv = substr(hash('sha256', $secret_iv), 0, 16);
21        if ( $action == 'encrypt' ) {
22            $output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
23            $output = base64_encode($output);
24        } else if( $action == 'decrypt' ) {
25            $output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
26        }
27        return $output;
28    }
29
30echo encrypt_decrypt('encrypt', 'lucas_gay');
31
32echo "<br>";
33
34echo encrypt_decrypt("decrypt", "RkJuZE9McUhSZGtKS2ZoZi9EZ1pUdz09");