COOKIE加密函数

示例用法：
$eC = new encodeCookie;
$e = $eC->encodeC ( md5 ('password') ); $d = $eC->decodeC ( $e );
echo "Original Cookie value : ".$d; echo "

"; echo "Encoded Cookie value : ".$e;

1. define ("DOMAIN", "54dev.com");
2. define ("PATH", "/");
3. define ("COOKIEID", "encodeCookie");
4. define ("COOKIEKEY", "raz"); // max 5 chars is good
6. /**
7. * class encodeCookie
8. *
9. * encode cookies before you send them
10. *
11. */
12. class encodeCookie {
13. /**
14. * encodeCookie::$config
15. *
16. * configuration
17. *
18. */
19. var $config;
21. /**
22. * encodeCookie::encodeCookie()
23. *
24. * constructor
25. *
26. */
27. function encodeCookie () {
28. $this->config = array ();
29. $this->config['cookie_key'] = COOKIEKEY;
30. $this->config['cookie'] = array (
31. 'cookie_id' => COOKIEID,
32. 'cookie_path' => PATH,
33. 'cookie_domain' => DOMAIN,
34. );
35. }
37. /**
38. * encodeCookie::set_Cookie()
39. *
40. * sets the cookie
41. *
42. * @param string $value
43. * @param integer $sticky
44. */
45. function set_Cookie ($name, $value = "", $sticky = 0) {
47. $exipres = "";
49. if ($sticky == 1) {
50. $expires = time() + 60*60*24*365;
51. }
53. $name = $this->config['cookie']['cookie_id'].$name;
54. $newValue = $this->encodeC ($value);
56. @setcookie($name, urlencode($newValue), $expires, $this->config['cookie']['cookie_path'], $this->config['cookie']['cookie_domain']);
57. }
59. /**
60. * encodeCookie::get_Cookie()
61. *
62. * gets the cookie
63. *
64. */
65. function get_Cookie ($name) {
67. if ( isset( $_COOKIE[$this->config['cookie']['cookie_id'].$name] ) ) {
68. $cookie = urldecode ( $_COOKIE[$this->config['cookie']['cookie_id'].$name] );
69. return $this->decodeC ($cookie);
70. } else {
71. return FALSE;
72. }
74. }
76. /**
77. * encodeCookie::encodeC()
78. *
79. * encodes the cookie
80. *
81. */
82. function encodeC ($cookie) {
84. $newcookie = array ();
85. $cookie = base64_encode ($cookie);
87. for ( $i=0; $i $newcookie[ $i ] = ord ( $cookie[ $i ] ) * $this->encodeKey ();
88. }
90. $newcookie = implode ('.', $newcookie);
92. return $newcookie;
93. }
95. /**
96. * encodeCookie::decodeC()
97. *
98. * decodes the cookie
99. *
100. */
101. function decodeC ($oldcookie) {
103. $newcookie = array ();
104. $cookie = explode ('.', $oldcookie);
106. for ( $i=0; $i $newcookie[ $i ] = chr ( $cookie[ $i ] / $this->encodeKey () );
107. }
109. $newcookie = implode ('', $newcookie);
110. $newcookie = base64_decode ($newcookie);
112. return $newcookie;
113. }
115. /**
116. * encodeCookie::encodeKey()
117. *
118. * encodes the key
119. *
120. */
121. function encodeKey () {
122. $newkey = 0;
123. for ( $i=0; $iconfig['cookie_key'] ); $i++ ) {
124. $newkey += ord ( $this->config['cookie_key'][ $i ] );
125. }
126. return $newkey;
127. }
129. }

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