|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
|
|
4
|
|
|
namespace Oakhope\OAuth2\Client\Support\MiniProgram; |
|
5
|
|
|
|
|
6
|
|
|
use Oakhope\OAuth2\Client\Support\Common\AESEncoder; |
|
7
|
|
|
|
|
8
|
|
|
/** |
|
9
|
|
|
* Class PKCS7Encoder |
|
10
|
|
|
* |
|
11
|
|
|
* 提供基于PKCS7算法的加解密接口 |
|
12
|
|
|
* @package Oakhope\OAuth2\Client\SDK\MiniProgram |
|
13
|
|
|
*/ |
|
14
|
|
|
class PKCS7Encoder |
|
15
|
|
|
{ |
|
16
|
|
|
const BLOCK_SIZE = 16; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* 对密文进行解密 |
|
20
|
|
|
* @param string $encrypted 需要解密的密文 |
|
21
|
|
|
* @param string $key |
|
22
|
|
|
* @param string $iv 解密的初始向量 |
|
23
|
|
|
* @return array 解密得到的明文 |
|
24
|
|
|
*/ |
|
25
|
6 |
|
public function decrypt($encrypted, $key, $iv) |
|
26
|
|
|
{ |
|
27
|
6 |
|
$decrypted = AESEncoder::decrypt( |
|
28
|
6 |
|
base64_decode($encrypted, true), |
|
29
|
6 |
|
base64_decode($key, true), |
|
30
|
6 |
|
base64_decode($iv, true), |
|
31
|
2 |
|
OPENSSL_NO_PADDING |
|
32
|
4 |
|
); |
|
33
|
|
|
|
|
34
|
6 |
|
$result = $this->decode($decrypted); |
|
35
|
|
|
|
|
36
|
6 |
|
return array(0, json_decode($result)); |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* 对需要加密的明文进行填充补位 |
|
41
|
|
|
* |
|
42
|
|
|
* @param string $text 需要进行填充补位操作的明文 |
|
43
|
|
|
* @return string 补齐明文字符串 |
|
44
|
|
|
*/ |
|
45
|
|
|
private function encode($text) |
|
|
|
|
|
|
46
|
|
|
{ |
|
47
|
|
|
$text_length = strlen($text); |
|
48
|
|
|
// 计算需要填充的位数 |
|
49
|
|
|
$amount_to_pad = PKCS7Encoder::BLOCK_SIZE - ($text_length % PKCS7Encoder::BLOCK_SIZE); |
|
50
|
|
|
if ($amount_to_pad == 0) { |
|
51
|
|
|
$amount_to_pad = PKCS7Encoder::BLOCK_SIZE; |
|
52
|
|
|
} |
|
53
|
|
|
// 获得补位所用的字符 |
|
54
|
|
|
$pad_chr = chr($amount_to_pad); |
|
55
|
|
|
$tmp = ""; |
|
56
|
|
|
for ($index = 0; $index < $amount_to_pad; $index++) { |
|
57
|
|
|
$tmp .= $pad_chr; |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
|
|
return $text.$tmp; |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* 对解密后的明文进行补位删除 |
|
65
|
|
|
* |
|
66
|
|
|
* @param string $text 解密后的明文 |
|
67
|
|
|
* @return bool|string 删除填充补位后的明文 |
|
68
|
|
|
*/ |
|
69
|
6 |
|
private function decode($text) |
|
70
|
|
|
{ |
|
71
|
6 |
|
$pad = ord(substr($text, -1)); |
|
72
|
6 |
|
if ($pad < 1 || $pad > 32) { |
|
73
|
|
|
$pad = 0; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
6 |
|
return substr($text, 0, (strlen($text) - $pad)); |
|
77
|
|
|
} |
|
78
|
|
|
} |
|
79
|
|
|
|
oakhope /
oauth2-wechat
Loading history...