secshpublickeyformat.java

这是linux下ssl vpn的实现程序

/*
 *  SSL-Explorer
 *
 *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
			
package com.sslexplorer.security.pki;


/**
 *
 *
 * @author $author$
 * @version $Revision: 1.1 $
 */
public class SECSHPublicKeyFormat extends Base64EncodedFileFormat
    implements SshPublicKeyFormat {
    private static String BEGIN = "---- BEGIN SSH2 PUBLIC KEY ----";
    private static String END = "---- END SSH2 PUBLIC KEY ----";

    /**
     * Creates a new SECSHPublicKeyFormat object.
     *
     * @param subject
     * @param comment
     */
    public SECSHPublicKeyFormat(String subject, String comment) {
        super(BEGIN, END);
        setHeaderValue("Subject", subject);
        setComment(comment);
    }

    /**
     * Creates a new SECSHPublicKeyFormat object.
     */
    public SECSHPublicKeyFormat() {
        super(BEGIN, END);
    }

    /**
     *
     *
     * @param comment
     */
    public void setComment(String comment) {
        setHeaderValue("Comment",
            (comment.trim().startsWith("\"") ? "" : "\"") + comment.trim() +
            (comment.trim().endsWith("\"") ? "" : "\""));
    }

    /**
     *
     *
     * @return
     */
    public String getComment() {
        return getHeaderValue("Comment");
    }

    /**
     *
     *
     * @return
     */
    public String getFormatType() {
        return "SECSH-PublicKey-" + super.getFormatType();
    }

    /**
     *
     *
     * @param algorithm
     *
     * @return
     */
    public boolean supportsAlgorithm(String algorithm) {
        return SshKeyPairFactory.supportsKey(algorithm);
    }
}