sDY3Dakj

1<?php if (!defined("BASEPATH")) exit("No direct script access allowed");
2
3function encrypt_url($string) {
4
5    $output = false;
6    /*
7
8    * read security.ini file & get encryption_key | iv | encryption_mechanism value for generating encryption code
9
10    */        
11    $security       = parse_ini_file("security.ini");
12    $secret_key     = $security["encryption_key"];
13    $secret_iv      = $security["iv"];
14    $encrypt_method = $security["encryption_mechanism"];
15
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
22    //do the encryption given text/string/number
23    $result = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
24    $output = base64_encode($result);
25    return $output;
26}
27
28
29
30function decrypt_url($string) {
31
32    $output = false;
33    /*
34    * read security.ini file & get encryption_key | iv | encryption_mechanism value for generating encryption code
35    */
36
37    $security       = parse_ini_file("security.ini");
38    $secret_key     = $security["encryption_key"];
39    $secret_iv      = $security["iv"];
40    $encrypt_method = $security["encryption_mechanism"];
41
42    // hash
43    $key    = hash("sha256", $secret_key);
44
45    // iv – encrypt method AES-256-CBC expects 16 bytes – else you will get a warning
46    $iv = substr(hash("sha256", $secret_iv), 0, 16);
47
48    //do the decryption given text/string/number
49
50    $output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
51    return $output;
52}