Правильно ли я делаю?:

public class CheckCertSign {
private static String clientCertPath = "C:\\certs\\client.cer";
private static String ucCertPath = "C:\\certs\\uc.cer";

public static void main(String[] args) throws Exception {
InputStream clientCert = new FileInputStream(clientCertPath);
InputStream ucCert = new FileInputStream(ucCertPath);

CertificateFactory cf = CertificateFactory.getInstance("X509");
Certificate certClient = cf.generateCertificate(clientCert);
Certificate certUC = cf.generateCertificate(ucCert);

try {
certClient.verify(certUC.getPublicKey());
System.out.println("Verify ok");
} catch(Exception e) {
System.out.println("Verify failed: " + e.toString());
}

clientCert.close();
ucCert.close();
}
}