function getunencryptpass($encryptpassword)
{
$encryptpassword = @base64_encode(pack("H*", $encryptpassword));
$decodedpassword = privatekey_decodeing($encryptpassword, RSA_KEY_ADD, TRUE);
$decodedpassword = trim($decodedpassword);
return $decodedpassword;
}
<?php
require "../rsa/rsa.php";
session_start();
//启用session
$userPoint = 0;
$userPoint = $_POST["userPoint"];
//echo "密文:$userPoint";
$userPoint = base64_encode(pack("H*", $userPoint));
$userPoint = privatekey_decodeing($userPoint, $prikey, true);
//echo "解析:$userPoint";
if (preg_match('/^\\d+$/i', $userPoint)) {
$_SESSION["userPoint"] = $userPoint;
echo "You get " . $userPoint . " point !";
} else {
$_SESSION["userPoint"] = 0;
echo "You try to hack the game , f**k your mather !";
}
* @param string 密钥文件（.pem）
* @param string 密文是否来源于JS的RSA加密
* @return string 明文
*/
function privatekey_decodeing($crypttext, $fileName, $fromjs = FALSE)
{
$key_content = file_get_contents($fileName);
$prikeyid = openssl_get_privatekey($key_content);
$crypttext = base64_decode($crypttext);
$padding = $fromjs ? OPENSSL_NO_PADDING : OPENSSL_PKCS1_PADDING;
if (openssl_private_decrypt($crypttext, $sourcestr, $prikeyid, $padding)) {
return $fromjs ? rtrim(strrev($sourcestr), "/0") : "" . $sourcestr;
}
return FALSE;
}
define("PEM", "private_key.pem");
//私钥文件
$data = $_POST["name"];
//$data='try';
$txt_en = base64_encode(pack("H*", $data));
//转成base64格式
$txt_de = privatekey_decodeing($txt_en, PEM, TRUE);
var_dump($txt_de);
setcookie("ceshi", $txt_de, time() + 3600);
echo $txt_de;
?>