Kraken API MATLAB client invalid signature error

Question

I\'m trying to do some authenticated calls to Kraken private endpoints but without success. I\'m still getting an error EAPI:Invalid signature. Does anybody know what\'s wrong?<

Answer 1

The problem is in function crypto here:

keyStr = java.lang.String(key);
key = SecretKeySpec(keyStr.getBytes('UTF-8'), algorithm);

As the base64 encoded private key from kraken is not necessarily UTF-8 encoded, you cannot use UTF-8 encoding to extract the key and pass UTF-8 string to the SecretKeySpec function. You need to use byte array instead.

Similar issues

https://code.google.com/p/google-apps-script-issues/issues/detail?id=5113 https://code.google.com/p/google-apps-script-issues/issues/detail?id=3121

Solution for javascript

github.com/Caligatio/jsSHA