Binance API - “此请求的签名无效”答案

【问题标题】：Binance API - "Signature for this request is not valid"Binance API - “此请求的签名无效”
【发布时间】：2021-03-03 11:27:03
【问题描述】：

我正在尝试通过 REST API 和 RestSharp 访问我的币安账户。这是我的代码：

public void getaccountdata()
{      


        string apikey = "myapikey";
        string secret = "mysecret";  
       
        var client = new RestClient("https://api.binance.com");

        request = new RestRequest("/api/v3/time", Method.GET);

        response = client.Get(request);

        ttime testtime = new ttime();
        testtime = JsonConvert.DeserializeObject<ttime>response.Content.ToString());

        string timestamp = testtime.serverTime;

        request = new RestRequest("/api/v3/account", Method.GET);

        request.AddHeader("X-MBX-APIKEY", apikey);

        request.AddQueryParameter("recvWindow", "5000");
        request.AddQueryParameter("timestamp", timestamp);

        request.AddQueryParameter("signature", CreateSignature(request.Parameters, secret));

        response = client.Get(request);
 
        System.Diagnostics.Debug.WriteLine(response.Content);

}

public static string CreateSignature(List<Parameter> parameters, string secret)
{
        var signature = "";
        if (parameters.Count > 0)
        {
            foreach (var item in parameters)
            {
                if (item.Name != "X-MBX-APIKEY")
                    signature += $"{item.Name}={item.Value}&";
            }
            signature = signature.Substring(0, signature.Length - 2);
        }


        byte[] keyBytes = Encoding.UTF8.GetBytes(secret);
        byte[] queryStringBytes = Encoding.UTF8.GetBytes(signature);
        HMACSHA256 hmacsha256 = new HMACSHA256(keyBytes);

        byte[] bytes = hmacsha256.ComputeHash(queryStringBytes);

        return BitConverter.ToString(bytes).Replace("-", "").ToLower();
  }

public class ttime
  {
        public string serverTime { get; set; }
  }

基本上我只是想复制解决方案here。但是，我总是收到“此请求的签名无效”响应。

响应 URI 看起来是正确的（根据常见问题解答 here 末尾的时间戳和签名）

有人知道我做错了什么吗？感谢您的帮助！

【问题讨论】：

标签： c# rest binance

【解决方案1】：

好的，错误是这一行：

signature = signature.Substring(0, signature.Length - 2);

这删除了时间戳的最后一个字符，所以应该是：

signature = signature.Substring(0, signature.Length - 1);

因此，如果有人需要 C# 中 Binance API 的简单且有效的示例，这里再次完整的工作代码：

public void getaccountdata()
{        

        string apikey = "myapikey";
        string secret = "mysecret";  
       
        var client = new RestClient("https://api.binance.com");

        request = new RestRequest("/api/v3/time", Method.GET);

        response = client.Get(request);

        ttime testtime = new ttime();
        testtime = JsonConvert.DeserializeObject<ttime>response.Content.ToString());

        string timestamp = testtime.serverTime;

        request = new RestRequest("/api/v3/account", Method.GET);

        request.AddHeader("X-MBX-APIKEY", apikey);

        request.AddQueryParameter("recvWindow", "5000");
        request.AddQueryParameter("timestamp", timestamp);

        request.AddQueryParameter("signature", CreateSignature(request.Parameters, secret));

        response = client.Get(request);
 
        System.Diagnostics.Debug.WriteLine(response.Content);

}

public static string CreateSignature(List<Parameter> parameters, string secret)
{
        var signature = "";
        if (parameters.Count > 0)
        {
            foreach (var item in parameters)
            {
                if (item.Name != "X-MBX-APIKEY")
                    signature += $"{item.Name}={item.Value}&";
            }
            signature = signature.Substring(0, signature.Length - 1);
        }


        byte[] keyBytes = Encoding.UTF8.GetBytes(secret);
        byte[] queryStringBytes = Encoding.UTF8.GetBytes(signature);
        HMACSHA256 hmacsha256 = new HMACSHA256(keyBytes);

        byte[] bytes = hmacsha256.ComputeHash(queryStringBytes);

        return BitConverter.ToString(bytes).Replace("-", "").ToLower();
  }

public class ttime
  {
        public string serverTime { get; set; }
  }

【讨论】：