/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8173181

 * @summary KeyStore regression due to default keystore being changed to PKCS12

 */

import java.io.*;

import java.security.KeyStore;

import java.security.cert.Certificate;

import java.security.cert.CertificateFactory;

import java.security.cert.X509Certificate;

/**

 * Test that a PKCS12 keystore entry can be created with an empty alias name.

 */

public class EmptyAlias {

    private static final String DIR = System.getProperty("test.src", ".");

    private static final String CERT = DIR + "/trusted.pem";

    private static final String EMPTY_ALIAS = "";

    public static void main(String[] args) throws Exception {

        KeyStore keystore = KeyStore.getInstance("PKCS12");

        keystore.load(null, null);

        keystore.setCertificateEntry(EMPTY_ALIAS, loadCertificate(CERT));

        KeyStore.Entry entry = keystore.getEntry(EMPTY_ALIAS, null);

        if (entry == null) {

            throw new Exception(

                "Error retrieving keystore entry using its (empty) alias");

        }

        System.out.println("OK");

    }

    private static Certificate loadCertificate(String certFile)

            throws Exception {

        X509Certificate cert = null;

        try (FileInputStream certStream = new FileInputStream(certFile)) {

            CertificateFactory factory =

                CertificateFactory.getInstance("X.509");

            return factory.generateCertificate(certStream);

        }

    }

}