/*

 * Copyright (c) 2013, 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 8005408

 * @summary KeyStore API enhancements

 */

import java.io.*;

import java.security.*;

import java.util.*;

import javax.crypto.*;

import javax.crypto.spec.*;

import java.security.spec.InvalidKeySpecException;

// Store a password in a keystore and retrieve it again.

public class StorePasswordTest {

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

    private static final char[] PASSWORD = "passphrase".toCharArray();

    private static final String KEYSTORE = "pwdstore.p12";

    private static final String ALIAS = "my password";

    private static final String USER_PASSWORD = "hello1";

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

        new File(KEYSTORE).delete();

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

        keystore.load(null, null);

        // Set entry

        Set<KeyStore.Entry.Attribute> attrs = new HashSet<>();

        attrs.add(new PKCS12Attribute("1.3.5.7.9", "printable1"));

        attrs.add(new PKCS12Attribute("2.4.6.8.10", "1F:2F:3F:4F:5F"));

        int originalAttrCount = attrs.size() + 2;

        keystore.setEntry(ALIAS,

            new KeyStore.SecretKeyEntry(convertPassword(USER_PASSWORD), attrs),

                new KeyStore.PasswordProtection(PASSWORD));

        try (FileOutputStream outStream = new FileOutputStream(KEYSTORE)) {

            System.out.println("Storing keystore to: " + KEYSTORE);

            keystore.store(outStream, PASSWORD);

        }

        try (FileInputStream inStream = new FileInputStream(KEYSTORE)) {

            System.out.println("Loading keystore from: " + KEYSTORE);

            keystore.load(inStream, PASSWORD);

            System.out.println("Loaded keystore with " + keystore.size() +

                " entries");

        }

        KeyStore.Entry entry = keystore.getEntry(ALIAS,

            new KeyStore.PasswordProtection(PASSWORD));

        int attrCount = entry.getAttributes().size();

        System.out.println("Retrieved entry with " + attrCount + " attrs: " +

            entry);

        if (attrCount != originalAttrCount) {

            throw new Exception("Failed to recover all the entry attributes");

        }

        SecretKey key = (SecretKey) keystore.getKey(ALIAS, PASSWORD);

        SecretKeyFactory factory =

            SecretKeyFactory.getInstance(key.getAlgorithm());

        PBEKeySpec keySpec =

            (PBEKeySpec) factory.getKeySpec(key, PBEKeySpec.class);

        char[] pwd = keySpec.getPassword();

        System.out.println("Recovered credential: " + new String(pwd));

        if (!Arrays.equals(USER_PASSWORD.toCharArray(), pwd)) {

            throw new Exception("Failed to recover the stored password");

        }

    }

    private static SecretKey convertPassword(String password)

        throws NoSuchAlgorithmException, InvalidKeySpecException {

        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBE");

        return factory.generateSecret(new PBEKeySpec(password.toCharArray()));

    }

}