支持中文的php加密解密类

1. /**
2. * Copyright (c) 2011 - 01 XatuDream
3. * XatuDream All Rights Reserved.
4. * Support:185390516.qzone.qq.com
5. * QQ:185390516
6. * Author:Lau Version:1.01
7. * Date:2010-08-12 09:28:32
8. */
9. ! defined ( 'WORKSPACE' ) && exit ( "Access Denied !" );
10. class MD5Crypt {
11. /**
12. * Enter description here ...
13. * @param unknown_type $str
14. * @return string
15. */
16. public final static function mdsha($str) {
17. $code = substr ( md5 ( $str ), 10 );
18. $code .= substr ( sha1 ( $str ), 0, 28 );
19. $code .= substr ( md5 ( $str ), 0, 22 );
20. $code .= substr ( sha1 ( $str ), 16 ) . md5 ( $str );
21. return self::chkToken () ? $code : null;
22. }
23. /**
24. * Enter description here ...
25. * @param unknown_type $param
26. */
27. private final static function chkToken() {
28. return true;
29. }
30. /**
31. * Enter description here ...
32. * @param unknown_type $txt
33. * @param unknown_type $encrypt_key
34. * @return Ambigous
35. */
36. private final static function keyED($txt, $encrypt_key) {
37. $encrypt_key = md5 ( $encrypt_key );
38. $ctr = 0;
39. $tmp = "";
40. for($i = 0; $i if ($ctr == strlen ( $encrypt_key ))
41. $ctr = 0;
42. $tmp .= substr ( $txt, $i, 1 ) ^ substr ( $encrypt_key, $ctr, 1 );
43. $ctr ++;
44. }
45. return $tmp;
46. }
48. /**
49. * Enter description here ...
50. * @param unknown_type $txt
51. * @param unknown_type $key
52. * @return string
53. */
54. public final static function Encrypt($txt, $key) {
55. srand ( ( double ) microtime () * 1000000 );
56. $encrypt_key = md5 ( rand ( 0, 32000 ) );
57. $ctr = 0;
58. $tmp = "";
59. for($i = 0; $i if ($ctr == strlen ( $encrypt_key ))
60. $ctr = 0;
61. $tmp .= substr ( $encrypt_key, $ctr, 1 ) . (substr ( $txt, $i, 1 ) ^ substr ( $encrypt_key, $ctr, 1 ));
62. $ctr ++;
63. }
64. $_code = md5 ( $encrypt_key ) . base64_encode ( self::keyED ( $tmp, $key ) ) . md5 ( $encrypt_key . $key );
65. return self::chkToken () ? $_code : null;
66. }
68. /**
69. * Enter description here ...
70. * @param unknown_type $txt
71. * @param unknown_type $key
72. * @return Ambigous
73. */
74. public final static function Decrypt($txt, $key) {
75. $txt = self::keyED ( base64_decode ( substr ( $txt, 32, - 32 ) ), $key );
76. $tmp = "";
77. for($i = 0; $i $md5 = substr ( $txt, $i, 1 );
78. $i ++;
79. $tmp .= (substr ( $txt, $i, 1 ) ^ $md5);
80. }
81. return self::chkToken () ? $tmp : null;
82. }
84. /**
85. * Enter description here ...
86. * @var unknown_type
87. */
88. private static $_key = 'lau';
89. }
90. ?>

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1. 使用方法：
3. /**
4. * Copyright (c) 2011 XatuDream
5. * XatuDream All Rights Reserved.
6. * Support:185390516.qzone.qq.com
7. * QQ:185390516
8. * Author:LoveCrystal Version:1.01
9. * Date:2011-9-2 04:00:37
10. */
11. define ( 'WORKSPACE', '.' . DIRECTORY_SEPARATOR );
12. header ( "Content-Type: text/html; charset=utf-8" );
14. include_once 'Core/Library/MD5Crypt.class.php';
16. $a = MD5Crypt::Encrypt ( "A", 100 );
17. echo "EnCode:" . $a, "
    ";
18. echo "DeCode:" . MD5Crypt::Decrypt ( $a, 100 );
20. ?>

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