当散列hash_hmac时,带有Convert.ToChar(0)散列结果的字符串与PHP中的chr(0)不同

我在PHP中有一个字符串,它被转换为字节数组并进行哈希处理.

转换为字节数组的字符串如下所示:

"G".chr(0)."便便";

我需要在C#中等效字节数组,所以我可以得到相同的哈希..

编辑:这是完全问题,导致哈希不一样.

PHP

$api_secret = '5432919427bd18884fc2a6e48b65dfba48fd9a1a46e3468b52fadbc6d6b463425';
$data = 'payment_currency=USD&group_orders=0&count=100&nonce=1385689989977529';
$endpoint = '/info/orderbook';

$signature = hash_hmac('sha512', $endpoint . chr(0) . $data, $api_secret);

$result =  base64_encode($signature);

C#

var apiSecret = "5432919427bd18884fc2a6e48b65dfba48fd9a1a46e3468b52fadbc6d6b463425";
var data = "payment_currency=USD&group_orders=0&count=100&nonce=1385689989977529";
var endPoint = "/info/orderbook";

System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();

String message = endpPoint + Convert.ToChar(0) + data;

var hmacsha512 = new HMACSHA512(encoding.GetBytes(message));
var result = Convert.ToBase64String(hmacsha512.Hash);

我尝试过不同的base64编码,如:

public static string ByteToString(byte[] buff)
    {
        string sbinary = "";
        for (int i = 0; i < buff.Length; i++)
            sbinary += buff[i].ToString("X2"); /* hex format */
        return sbinary;
    }   

但最终问题似乎是由于chr(0)php使用而被散列的byteArray.