/*
*
*
* Copyright 1990-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* 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 version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.j2me.crypto;
/**
* Provides applications the functionality of a message digest algorithm
*/
public class MessageDigest {
/**
* Message digest implementation.
*/
com.sun.midp.crypto.MessageDigest messageDigest;
public MessageDigest(String algorithm) throws NoSuchAlgorithmException {
try {
messageDigest = com.sun.midp.crypto.MessageDigest.getInstance(algorithm);
}
catch (com.sun.midp.crypto.NoSuchAlgorithmException e) {
throw new NoSuchAlgorithmException(e.getMessage());
}
}
public void reset() {
messageDigest.reset();
}
public void update(byte[] input, int offset, int len) {
messageDigest.update(input, offset, len);
}
public void digest(byte[] buf, int offset, int len) throws DigestException {
try {
messageDigest.digest(buf, offset, len);
} catch (com.sun.midp.crypto.DigestException e) {
throw new DigestException(e.getMessage());
}
}
public int getDigestLength() {
return messageDigest.getDigestLength();
}
}