| 222 |
efrain |
1 |
<?php
|
|
|
2 |
|
|
|
3 |
declare(strict_types=1);
|
|
|
4 |
|
|
|
5 |
namespace LeadersLinked\Library;
|
|
|
6 |
|
|
|
7 |
class EasyAES {
|
|
|
8 |
private $iv;
|
|
|
9 |
private $key;
|
|
|
10 |
private $bit; //Only can use 128, 256
|
|
|
11 |
private $mode;
|
|
|
12 |
|
|
|
13 |
function __construct($key, $bit = 128, $iv = "") {
|
|
|
14 |
$this->bit = $bit;
|
|
|
15 |
// gen key
|
|
|
16 |
if($this->bit == 256){
|
|
|
17 |
$this->key = hash('SHA256', $key, true);
|
|
|
18 |
$this->mode = 'AES-256-CBC';
|
|
|
19 |
} else {
|
|
|
20 |
$this->key = hash('MD5', $key, true);
|
|
|
21 |
$this->mode = 'AES-128-CBC';
|
|
|
22 |
}
|
|
|
23 |
|
|
|
24 |
// gen iv
|
|
|
25 |
if($iv != ""){
|
|
|
26 |
$this->iv = hash('MD5', $iv, true);
|
|
|
27 |
} else {
|
|
|
28 |
//IV is not set. It doesn't recommend.
|
|
|
29 |
$this->iv = chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0);
|
|
|
30 |
}
|
|
|
31 |
}
|
|
|
32 |
|
|
|
33 |
function encrypt($str) {
|
|
|
34 |
if(version_compare(PHP_VERSION, '7.0.0', 'ge')) {
|
|
|
35 |
return $this->opensslEncrypt($str);
|
|
|
36 |
} else {
|
|
|
37 |
return $this->mcryptEncrypt($str);
|
|
|
38 |
}
|
|
|
39 |
}
|
|
|
40 |
|
|
|
41 |
function decrypt($str) {
|
|
|
42 |
if(version_compare(PHP_VERSION, '7.0.0', 'ge')) {
|
|
|
43 |
return $this->opensslDecrypt($str);
|
|
|
44 |
} else {
|
|
|
45 |
return $this->mcryptDecrypt($str);
|
|
|
46 |
}
|
|
|
47 |
}
|
|
|
48 |
|
|
|
49 |
private function opensslEncrypt($str) {
|
|
|
50 |
$data = openssl_encrypt($str, $this->mode, $this->key, OPENSSL_RAW_DATA, $this->iv);
|
|
|
51 |
return base64_encode($data);
|
|
|
52 |
}
|
|
|
53 |
|
|
|
54 |
private function opensslDecrypt($str) {
|
|
|
55 |
$decrypted = openssl_decrypt(base64_decode($str), $this->mode, $this->key, OPENSSL_RAW_DATA, $this->iv);
|
|
|
56 |
return $decrypted;
|
|
|
57 |
}
|
|
|
58 |
|
|
|
59 |
private function mcryptEncrypt($str) {
|
|
|
60 |
$mcryptMode = MCRYPT_RIJNDAEL_128;
|
|
|
61 |
if($this->bit == 256){
|
|
|
62 |
$mcryptMode = MCRYPT_RIJNDAEL_256;
|
|
|
63 |
}
|
|
|
64 |
|
|
|
65 |
//Open
|
|
|
66 |
$module = mcrypt_module_open($mcryptMode, '', MCRYPT_MODE_CBC, '');
|
|
|
67 |
mcrypt_generic_init($module, $this->key, $this->iv);
|
|
|
68 |
|
|
|
69 |
//Padding
|
|
|
70 |
$block = mcrypt_get_block_size($mcryptMode, MCRYPT_MODE_CBC); //Get Block Size
|
|
|
71 |
$pad = $block - (strlen($str) % $block); //Compute how many characters need to pad
|
|
|
72 |
$str .= str_repeat(chr($pad), $pad); // After pad, the str length must be equal to block or its integer multiples
|
|
|
73 |
|
|
|
74 |
//Encrypt
|
|
|
75 |
$encrypted = mcrypt_generic($module, $str);
|
|
|
76 |
|
|
|
77 |
//Close
|
|
|
78 |
mcrypt_generic_deinit($module);
|
|
|
79 |
mcrypt_module_close($module);
|
|
|
80 |
|
|
|
81 |
//Return
|
|
|
82 |
return base64_encode($encrypted);
|
|
|
83 |
}
|
|
|
84 |
|
|
|
85 |
private function mcryptDecrypt($str) {
|
|
|
86 |
$mcryptMode = MCRYPT_RIJNDAEL_128;
|
|
|
87 |
if($this->bit == 256){
|
|
|
88 |
$mcryptMode = MCRYPT_RIJNDAEL_256;
|
|
|
89 |
}
|
|
|
90 |
|
|
|
91 |
//Open
|
|
|
92 |
$module = mcrypt_module_open($mcryptMode, '', MCRYPT_MODE_CBC, '');
|
|
|
93 |
mcrypt_generic_init($module, $this->key, $this->iv);
|
|
|
94 |
|
|
|
95 |
//Decrypt
|
|
|
96 |
$str = mdecrypt_generic($module, base64_decode($str)); //Get original str
|
|
|
97 |
|
|
|
98 |
//Close
|
|
|
99 |
mcrypt_generic_deinit($module);
|
|
|
100 |
mcrypt_module_close($module);
|
|
|
101 |
|
|
|
102 |
//Depadding
|
|
|
103 |
$slast = ord(substr($str, -1)); //pad value and pad count
|
|
|
104 |
$str = substr($str, 0, strlen($str) - $slast);
|
|
|
105 |
|
|
|
106 |
//Return
|
|
|
107 |
return $str;
|
|
|
108 |
}
|
|
|
109 |
|
|
|
110 |
static function encryptString($content) {
|
|
|
111 |
//Set password and iv string here
|
|
|
112 |
$aes = new EasyAES('****************', 128, '################');
|
|
|
113 |
return $aes->encrypt($content);
|
|
|
114 |
}
|
|
|
115 |
|
|
|
116 |
static function decryptString($content) {
|
|
|
117 |
//Set password and iv string here
|
|
|
118 |
$aes = new EasyAES('****************', 128, '################');
|
|
|
119 |
return $aes->decrypt($content);
|
|
|
120 |
}
|
|
|
121 |
}
|