public String genericPyCharmKey(int minorVersion, int majorVersion, String userName) {
    BigInteger pubKey = new BigInteger(
        "D57B0596A03949D9A3BB0CD1F7931E405AE27D0E0AF4E562072B487B0DAB7F0874AA982E5383E75FF13D36CA9D8531AC1FA2ED7B11C8858E821C2D5FB48002DD",
        16);
    BigInteger privKey = new BigInteger(