com.itextpdf.text.pdf.security.KeyStoreUtil.java Source code

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Here is the source code for com.itextpdf.text.pdf.security.KeyStoreUtil.java

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/*
 *
 * This file is part of the iText (R) project.
Copyright (c) 1998-2019 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf.security;

import java.io.File;
import java.io.FileInputStream;
import java.security.KeyStore;

import com.itextpdf.text.ExceptionConverter;

/**
 * Utility class with some KeyStore related methods.
 */
public class KeyStoreUtil {

    /**
     * Loads the default root certificates at <java.home>/lib/security/cacerts.
     * @param provider the provider or <code>null</code> for the default provider
     * @return a <CODE>KeyStore</CODE>
     */
    public static KeyStore loadCacertsKeyStore(String provider) {
        File file = new File(System.getProperty("java.home"), "lib");
        file = new File(file, "security");
        file = new File(file, "cacerts");
        FileInputStream fin = null;
        try {
            fin = new FileInputStream(file);
            KeyStore k;
            if (provider == null)
                k = KeyStore.getInstance("JKS");
            else
                k = KeyStore.getInstance("JKS", provider);
            k.load(fin, null);
            return k;
        } catch (Exception e) {
            throw new ExceptionConverter(e);
        } finally {
            try {
                if (fin != null) {
                    fin.close();
                }
            } catch (Exception ex) {
            }
        }
    }

    /**
     * Loads the default root certificates at &lt;java.home&gt;/lib/security/cacerts
     * with the default provider.
     * @return a <CODE>KeyStore</CODE>
     */
    public static KeyStore loadCacertsKeyStore() {
        return loadCacertsKeyStore(null);
    }

}