/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.hmtp;
import java.security.MessageDigest;
import java.security.Principal;
import com.caucho.security.BasicPrincipal;
import com.caucho.security.DigestBuilder;
import com.caucho.util.Base64;
/**
* Manages links on the client
*/
public class ClientAuthManager {
public String sign(String algorithm,
String uid,
String nonce,
String password)
{
try {
MessageDigest md = MessageDigest.getInstance("SHA-256");
if (uid != null)
md.update(uid.getBytes("UTF-8"));
md.update(nonce.getBytes("UTF-8"));
if (password != null) {
String signed = password;
if (algorithm != null && ! "".equals(uid)) {
Principal user = new BasicPrincipal(uid);
char []digest = DigestBuilder.getDigest(user,
algorithm,
password.toCharArray(),
algorithm.toCharArray());
if (digest != null)
signed = new String(digest);
}
md.update(signed.getBytes("UTF-8"));
}
byte []digest = md.digest();
return Base64.encode(digest);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}