Kucoin Api KC-API-PASSPHRASE is Invalid

Question

Im trying to call "/api/v1/sub-accounts" endpoint to get Account balance but there is something wrong with it! here is my code :

public Observable<Response<String>> getBalance(){
    long timestamp = Timestamp.from(Instant.now()).getTime() + localDelayTime;
    return service.getBalance(
            apiKey+"",
                    timestamp+"",
                    base64(encode(secKey,(timestamp+"GET"+"/api/v1/sub-accounts"+"")))+"",
            base64(encode(secKey,passPhrase))+"",

            "2")
            .subscribeOn(Schedulers.io())
            .unsubscribeOn(Schedulers.io())
            .retry(2)
            .timeout(10,TimeUnit.SECONDS);
}

and my encryption methods are :

private String base64(String encode) {
    try {
        return Base64.getEncoder().encodeToString((encode).getBytes(StandardCharsets.UTF_8));
    }catch (NullPointerException e){
        return "";
    }
}

and

public static String encode(String key, String data) {
    Mac sha256;
    try {
        sha256 = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
        sha256.init(secret_key);
        return bytesToHex(sha256.doFinal(data.getBytes("UTF-8")));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

public static String bytesToHex(byte[] bytes) {
    char[] HEX_ARRAY = "0123456789abcdef".toCharArray();
    char[] hexChars = new char[bytes.length * 2];
    for (int j = 0; j < bytes.length; j++) {
        int v = bytes[j] & 0xFF;
        hexChars[j * 2] = HEX_ARRAY[v >>> 4];
        hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
    }
    return new String(hexChars);
}

the values of 'apikey , secretKey , passPhrase' are right also the value of timestamp , i checked it with server

Answer 1

This caught me offguard too. Passphrase is the API password, when you created the API at your account. Not the trading 6 digit code you use.