PHP加密解密也是常有的事,最近在弄相关的东西,发现discuz论坛里的PHP加密解密处理类代码,感觉挺不错,在用的时候,要参考Discuz论坛的passport相关函数,后面我会附上使用方法,先把类代码帖上来:
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/*========================================================
= 文件名称:cls.sys_crypt.php
= 摘 要:php加密解密处理类
= 版 本:1.0
= 参 考:Discuz论坛的passport相关函数
=========================================================*/
class
SysCrypt {
private
$crypt_key
;
// 构造函数
public
function
__construct(
$crypt_key
) {
$this
-> crypt_key =
$crypt_key
;
}
public
function
php_encrypt(
$txt
) {
srand((double)microtime() * 1000000);
$encrypt_key
= md5(rand(0,32000));
$ctr
= 0;
$tmp
=
''
;
for
(
$i
= 0;
$i
<
strlen
(
$txt
);
$i
++) {
$ctr
=
$ctr
==
strlen
(
$encrypt_key
) ? 0 :
$ctr
;
$tmp
.=
$encrypt_key
[
$ctr
].(
$txt
[
$i
]^
$encrypt_key
[
$ctr
++]);
}
return
base64_encode
(self::__key(
$tmp
,
$this
-> crypt_key));
}
public
function
php_decrypt(
$txt
) {
$txt
= self::__key(
base64_decode
(
$txt
),
$this
-> crypt_key);
$tmp
=
''
;
for
(
$i
= 0;
$i
<
strlen
(
$txt
);
$i
++) {
$md5
=
$txt
[
$i
];
$tmp
.=
$txt
[++
$i
] ^
$md5
;
}
return
$tmp
;
}
private
function
__key(
$txt
,
$encrypt_key
) {
$encrypt_key
= md5(
$encrypt_key
);
$ctr
= 0;
$tmp
=
''
;
for
(
$i
= 0;
$i
<
strlen
(
$txt
);
$i
++) {
$ctr
=
$ctr
==
strlen
(
$encrypt_key
) ? 0 :
$ctr
;
$tmp
.=
$txt
[
$i
] ^
$encrypt_key
[
$ctr
++];
}
return
$tmp
;
}
public
function
__destruct() {
$this
-> crypt_key = null;
}
}
?>
|
建议将此类保存文件名为:cls.sys_crypt.php
使用方法说明:
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//使用前请先引入类文件,如:
include
'cls.sys_crypt.php'
;
$sc
=
new
SysCrypt(
'phpwms'
);
$text
=
'110'
;
print
(
$sc
-> php_encrypt(
$text
));
print
(
'
);
print
(
$sc
-> php_decrypt(
$sc
-> php_encrypt(
$text
)));
?>
|
原文地址: Discuz论坛写出的php加密解密处理类(代码+使用方法)