coin mx 403 forbidden error on my web request

Question

I have been trying to make a query to the coin.mx site in a C# app, and I keep getting a 403 forbidden error. Their example uses python:

base64.b64encode(str(HMAC(YOUR_SECRET, PATH+'?'+S, sha512).digest())),

where PATH is a http path (e.x. "/api/v2/trader/info")

given my secret is a hex string of the form "d1e2a3d4", I calculate my signature as follows:

HMACSHA512 mHasher512 = new HMACSHA512(secret);
var path = "/api/v2/trader/info?nonce=123"
var msg = Encoding.ASCII.GetBytes( path );
var hash = mHasher512.ComputeHash(msg);
var hashb64 = Convert.ToBase64String(hash);
return hashb64;

Answer 1

I was having the same issue and found this question while searching for a solution. I finally fixed the problem by removing ? in the path string. Try changing your path variable as follows (this is just for getting the hash string, the GET request still needs the ? of course).

var path = "/api/v2/trader/infononce=123"