c#如何解密DZ7.0的cookie？？

[TopFans]

有没做过的朋友能帮忙一下。
1 我通过检测工具取得cookie为:
2 用网上找的一个代码decoe，但是得出来的是乱码

//从浏览器取得的cookie值
string hash = "56abivY+U+EAcg1Znn6dDpsgdWchmmsZ3nd5C3dpSU+scsv58Csb3EMS1rcfqJcSN331v9BFCSoHTTGYFyM1BWE";

//当前站点的auth key
string key = "s5ocKaq006N8i3F8p2J8X9sdWal8r7Ifpd45u3J6weDf00t0C1DeK8ab11F7v0f4";
//PS 我不是很确定这个key应该从哪个文件取。

string[] s2 = DiscuzDecode2(hash,key);
string b2 = s2.ToString();
        

public string[] DiscuzDecode2(string hash, string authkey) //这里是Discuz论坛的随机加密字串
{
    //Discuz Cookies的相应解密算法，C#版
    string[] userinfo = new string[3];
    string Result = "";
    string discuz_auth_key = FormsAuthentication.HashPasswordForStoringInConfigFile((authkey + System.Web.HttpContext.Current.Request.UserAgent), "MD5").ToLower();
    string key = FormsAuthentication.HashPasswordForStoringInConfigFile(discuz_auth_key, "MD5").ToLower();
    int key_length = key.Length;
    hash = (hash.Length % 4 == 0) ? hash : hash + "====".Substring(0, 4 - hash.Length % 4);
    byte[] byteHash = Convert.FromBase64String(hash);
    int byteHash_length = byteHash.Length;
    byte[] rndkey = new byte[256];
    byte[] box = new byte[256];
    byte SwapTmp;
    for (int i = 0; i <= 255; i++)
    {
        rndkey[i] = (byte)(key[i % key_length]);
        box[i] = (byte)i;
    }
    for (int j = 0, i = 0; i < 256; i++)
    {
        j = (j + box[i] + rndkey[i]) % 256;
        SwapTmp = box[i];
        box[i] = box[j];
        box[j] = SwapTmp;
    }
    for (int a = 0, j = 0, i = 0; i < byteHash_length; i++)
    {
        a = (byte)((a + 1) % 256);
        j = (byte)((j + box[a]) % 256);
        SwapTmp = box[a];
        box[a] = box[j];
        box[j] = SwapTmp;
        byteHash[i] = (byte)((byteHash[i]) ^ (box[(box[a] + box[j]) % 256]));
    }
    Result = System.Text.Encoding.Default.GetString(byteHash);
    userinfo = Result.Split('\t');
    //userinfo[0]为md5加密后的字串
    //userinfo[1]为安全问答
    //userinfo[2]为用户在bbs中的uid
    return userinfo;
}

[mrshelly]

看 api 的 uc.php 把 decode 部分翻译为 c# 就行了.

[fxs_2008]

这个没有好办法，原样翻译吧
网上搜下看看

整合和解密时那个函数还是要用的！

[残剑无弦]

帮顶~~ 接分！~

[TopFans]

发一些代码， 麻烦大家帮忙看看啊

PHP代码
//调用开始， 这个到数组里面就是解密好的数据了。
ist($discuz_pw, $discuz_secques, $discuz_uid) =daddslashes(explode("\t", authcode($_DCOOKIE['auth'], 'DECODE')), 1);

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {

	$ckey_length = 4;
	$key = md5($key ? $key : 'ab99e12385c8221aeeae9ea9db8f85d5';);//这个key写死 和下面c#的函数一样
	$keya = md5(substr($key, 0, 16));
	$keyb = md5(substr($key, 16, 16));
	$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), 

-$ckey_length)) : '';

	$cryptkey = $keya.md5($keya.$keyc);
	$key_length = strlen($cryptkey);

	$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry 

+ time() : 0).substr(md5($string.$keyb), 0, 16).$string;
	$string_length = strlen($string);

	$result = '';
	$box = range(0, 255);

	$rndkey = array();
	for($i = 0; $i <= 255; $i++) {
		$rndkey[$i] = ord($cryptkey[$i % $key_length]);
	}

	for($j = $i = 0; $i < 256; $i++) {
		$j = ($j + $box[$i] + $rndkey[$i]) % 256;
		$tmp = $box[$i];
		$box[$i] = $box[$j];
		$box[$j] = $tmp;
	}

	for($a = $j = $i = 0; $i < $string_length; $i++) {
		$a = ($a + 1) % 256;
		$j = ($j + $box[$a]) % 256;
		$tmp = $box[$a];
		$box[$a] = $box[$j];
		$box[$j] = $tmp;
		$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
	}

	if($operation == 'DECODE') {
		if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == 

substr(md5(substr($result, 26).$keyb), 0, 16)) {
			return substr($result, 26);
		} else {
			return '';
		}
	} else {
		return $keyc.str_replace('=', '', base64_encode($result));
	}

}

function daddslashes($string, $force = 0) {
	!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());
	if(!MAGIC_QUOTES_GPC || $force) {
		if(is_array($string)) {
			foreach($string as $key => $val) {
				$string[$key] = daddslashes($val, $force);
			}
		} else {
			$string = addslashes($string);
		}
	}
	return $string;
}



//C#的code
public static string[] DiscuzDecode(string hash)
   {
       //Discuz Cookies的相应解密算法，C#版
       string[] userinfo = new string[3];
       string Result = "";
    //这个是写死的 不会有错。    
    string discuz_auth_key = "ab99e12385c8221aeeae9ea9db8f85d5";
    string key =FormsAuthentication.HashPasswordForStoringInConfigFile(discuz_auth_key, "MD5").ToLower();
       int key_length = key.Length;
       hash = (hash.Length % 4 == 0) ? hash : hash + "====".Substring(0, 4 - hash.Length % 4);
       byte[] byteHash = Convert.FromBase64String(hash);
       int byteHash_length = byteHash.Length;
       byte[] rndkey = new byte[256];
       byte[] box = new byte[256];
       byte SwapTmp;
       for (int i = 0; i <= 255; i++)
       {
           rndkey[i] = (byte)(key[i % key_length]);
           box[i] = (byte)i;
       }
       for (int j = 0, i = 0; i < 256; i++)
       {
           j = (j + box[i] + rndkey[i]) % 256;
           SwapTmp = box[i];
           box[i] = box[j];
           box[j] = SwapTmp;
       }
       for (int a = 0, j = 0, i = 0; i < byteHash_length; i++)
       {
           a = (byte)((a + 1) % 256);
           j = (byte)((j + box[a]) % 256);
           SwapTmp = box[a];
           box[a] = box[j];
           box[j] = SwapTmp;
           byteHash[i] = (byte)((byteHash[i]) ^ (box[(box[a] + box[j]) % 256]));
       }

    //Result = Convert.FromBase64String(Result);   
    Result = System.Text.Encoding.Default.GetString(byteHash);
    //Result = Convert.FromBase64String(Result);   
    
    userinfo = Result.Split('\t');
       //userinfo[0]为md5加密后的字串
       //userinfo[1]为安全问答
       //userinfo[2]为用户在bbs中的uid
    
     return userinfo;  
     //我这里得到的是不是应该就是解密好的了？可是现在我得到的是乱码，而且数组的长度也不是3个。
   }