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我正試圖在MATLAB中實現比特幣交換Kraken的API。不幸的是，我試圖執行身份驗證以檢索私人用戶數據。使用Matlab的Kraken API「無效簽名」錯誤
特別是我玩了以下實現：Kraken API MATLAB client invalid signature error。 Kraken API的文檔如下：https://www.kraken.com/help/api
當與私有用戶數據連接時，我不斷遇到錯誤：{「error」：[「EAPI：Invalid signature」]}。有人可能會快速查看下面的實現並查找代碼中的缺陷嗎？或者有人成功實現了Kraken API for Matlab？
非常感謝！
% Private
uri = '0/private/Balance';
postdata='';
[response,status] = kraken_authenticated(uri,postdata)
% test uri='0/private/AddOrder'
% test postdata='&pair=XBTEUR&type=buy&ordertype=limit&price=345.214&volume=0.65412&leverage=1.5&oflags=post'
function [response,status]=kraken_authenticated(uri,postdata)
% Generate URL
url=['https://api.kraken.com/',uri];
% nonce
nonce = num2str(floor((now-datenum('1970', 'yyyy'))*8640000000));
key = ' '
secret = ' '
% 1st hash
Opt.Method = 'SHA-256';
Opt.Input = 'ascii';
sha256string = DataHash(['nonce=',nonce,postdata],Opt);
% 2nd hash
%sign = crypto([uri,sha256string], secret, 'HmacSHA512');
sign = crypto([uri,sha256string], base64decode(secret), 'HmacSHA512')
%sign = HMAC([uri,sha256string], base64decode(secret), 'SHA-512');
%header_0=http_createHeader('Content-Type','application/x-www-form-urlencoded');
header_1=http_createHeader('API-Key',key);
header_2=http_createHeader('API-Sign',char(sign));
header=[header_1 header_2];
[response,status] = urlread2(url,'POST',['nonce=',nonce,postdata],header);
end
function signStr = crypto(str, key, algorithm)
import java.net.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import org.apache.commons.codec.binary.*
keyStr = java.lang.String(key);
key = SecretKeySpec(keyStr.getBytes('UTF-8'), algorithm);
%key = SecretKeySpec(keyStr.getBytes(), algorithm)
mac = Mac.getInstance(algorithm);
mac.init(key);
toSignStr = java.lang.String(str);
signStr = java.lang.String(Hex.encodeHex(mac.doFinal(toSignStr.getBytes('UTF-8'))))
%signStr = java.lang.String(Hex.encodeHex(mac.doFinal(toSignStr.getBytes())))
end
function header = http_createHeader(name,value)
header = struct('name',name,'value',value);
end