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Get Unique Id
/**
* Berlin Brown
* Dec 6, 2006
*
* -------------------------- COPYRIGHT_AND_LICENSE --
* Botlist contains an open source suite of software applications for
* social bookmarking and collecting online news content for use on the web.
* Multiple web front-ends exist for Django, Rails, and J2EE.
* Users and remote agents are allowed to submit interesting articles.
*
* Copyright (c) 2007, Botnode.com (Berlin Brown)
* http://www.opensource.org/licenses/bsd-license.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the Botnode.com (Berlin Brown) nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* CONTRIBUTORS 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.
* -------------------------- END_COPYRIGHT_AND_LICENSE --
*/
//package org.bresearch.websec.utils.botlist;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;
/**
* This is class is used by botverse.
*
* Usage: BotListUniqueId.getUniqueId())
* @author Berlin Brown
*
*/
public class BotlistUniqueId {
private String toHexString(byte[] bytes) {
char[] ret = new char[bytes.length * 2];
for (int i = 0, j = 0; i < bytes.length; i++) {
int c = (int) bytes[i];
if (c < 0) {
c += 0x100;
}
ret[j++] = Character.forDigit(c / 0x10, 0x10);
ret[j++] = Character.forDigit(c % 0x10, 0x10);
}
return new String(ret);
}
public String getUniqueId() {
String digest = "";
try {
MessageDigest md = MessageDigest.getInstance("MD5");
String timeVal = "" + (System.currentTimeMillis() + 1);
String localHost = "";;
try {
localHost = InetAddress.getLocalHost().toString();
} catch (UnknownHostException e) {
// If an error, we can use other values.
}
String randVal = "" + new Random().nextInt();
String val = timeVal + localHost + randVal;
md.reset();
md.update(val.getBytes());
// Generate the digest.
digest = toHexString(md.digest());
} catch(NoSuchAlgorithmException e) {
} // End of the Try - Catch
return digest;
} // End of the Method //
}
