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A versatile Java(TM) library that implements many useful container and utility classes.

There is a newer version: 1.1.12


/*
 * de.unkrig.commons - A general-purpose Java class library
 *
 * Copyright (c) 2015, Arno Unkrig
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *       following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
 *       following disclaimer in the documentation and/or other materials provided with the distribution.
 *    3. The name of the author may not be used to endorse or promote products derived from this software without
 *       specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package de.unkrig.commons.net.security;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;

import de.unkrig.commons.nullanalysis.Nullable;

/**
 * Utility functionality in the context of JVM "key stores".
 */
public final
class KeyStores {

    private KeyStores() {}

    /**
     * Loads and returns the given {@code keyStoreFile} (or the JVM's default keystore file).
     */
    public static KeyStore
    loadKeyStore(@Nullable File keyStoreFile, @Nullable char[] keyStorePassword)
    throws KeyStoreException, FileNotFoundException, IOException, NoSuchAlgorithmException, CertificateException {

        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());

        InputStream is = new FileInputStream(
            keyStoreFile != null
            ? keyStoreFile
            : new File(System.getProperty("java.home") + "/lib/security/cacerts")
        );
        try {
            keyStore.load(is, keyStorePassword);
        } finally {
            is.close();
        }

        return keyStore;
    }

}