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Ïл°ÉÙ˵,ÏȽ«ËüÃÇ´ò°ü³ÉÒ»¸öÎļþ¾Í½Ðfun.php°É
<?php
function passport_encrypt($txt, $key) {
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(passport_key($tmp, $key));
}
function passport_decrypt($txt, $key) {
$txt = passport_key(base64_decode($txt), $key);
$tmp = '';
for($i = 0;$i < strlen($txt); $i++) {
$md5 = $txt[$i];
$tmp .= $txt[++$i] ^ $md5;
}
return $tmp;
}
function passport_key($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;
}
?>
ÒÔÏÂÊÇһЩʾÀý…¼ÓÉî¶ÔÕâÈý¸ö¼ÓÃܽâÃܺ¯ÊýµÄÀí½â…
//string.php
<?php
include “fun.php”;
$txt = “This is a test”;
$key = “testkey”;
$encrypt = passport_encrypt($txt,$key);
$decrypt = passport_decrypt($encrypt,$key);
echo $txt.”<br><hr>”;
echo $encrypt.”<br><hr>”;
echo $decrypt.”<br><hr>”;
?>
//array.php
<?php
include “fun.php”;
$array = array(
"a" => "1",