问是否有方法从电子令牌中提取证书？

EN

    String alias;
    SunPKCS11 sunpkcs11;
    Key privateKey;


    String cfgFile = "D:\\cfgFile.cfg";

    sunpkcs11 = new SunPKCS11(cfgFile);

    Security.addProvider(sunpkcs11);
    alias = "myAlias";
KeyStore.Builder builderRunning = KeyStore.Builder.newInstance("PKCS11", sunpkcs11,new KeyStore.CallbackHandlerProtection(new CallbackHandler() {
        public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {

          }}));

        // get my private key

            KeyStore.PrivateKeyEntry pkEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(alias,
                    new KeyStore.PasswordProtection("password".toCharArray()));
            privateKey = pkEntry.getPrivateKey();