J6gJ3F7G

1String secretKey = "value";
2    String apiKey = "value";
3    String nonce = String.valueOf(System.currentTimeMillis());
4    Mac sha512_HMAC = Mac.getInstance("HmacSHA512");
5    String message = nonce + apiKey;
6    SecretKeySpec sKey = new SecretKeySpec(secretKey.getBytes(), "HmacSHA512");
7    sha512_HMAC.init(sKey);
8    byte[] hash = sha512_HMAC.doFinal(message.getBytes());
9    String signature = DatatypeConverter.printHexBinary(hash).toUpperCase();
10
11    String POST_PARAMS = "KEY="+apiKey+"&SIGNATURE="+signature+"&NONCE="+nonce;
12    URL url = new URL("https://bitgrail.com/api/v1/balances");
13    HttpURLConnection con = (HttpURLConnection) url.openConnection();
14    con.setRequestMethod("POST");
15    con.setRequestProperty("User-Agent", USER_AGENT);
16
17    con.setDoOutput(true);
18    OutputStream os = con.getOutputStream();
19    os.write(POST_PARAMS.getBytes());
20    os.flush();
21    os.close();
22
23    int responseCode = con.getResponseCode();
24    System.out.println("POST Response Code :: " + responseCode);
25
26    if (responseCode == HttpURLConnection.HTTP_OK) {
27        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
28        String inputLine;
29        StringBuffer response = new StringBuffer();
30
31        while ((inputLine = in.readLine()) != null) {
32            response.append(inputLine);
33        }
34        in.close();
35
36        // print result
37        System.out.println(response.toString());
38    } //if
39    else {
40        System.out.println("POST request not worked");
41    } //else
42	
43POST Response Code :: 200
44{"success":0,"response":{"error":"Missing Key or Signature"}}