/*
* This file is part of muCommander, http://www.mucommander.com
* Copyright (C) 2002-2016 Maxence Bernard
*
* muCommander is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* muCommander 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.mucommander.commons.io;
import java.io.InputStream;
import java.security.DigestInputStream;
import java.security.MessageDigest;
/**
* This class extends <code>java.security.DigestInputStream</code> and adds convenience methods that return the
* digest/checksum expressed in various forms.
*
* @see com.mucommander.commons.io.ChecksumOutputStream
* @author Maxence Bernard
*/
public class ChecksumInputStream extends DigestInputStream {
public ChecksumInputStream(InputStream stream, MessageDigest digest) {
super(stream, digest);
}
/**
* Returns this stream's digest, expressed as a byte array.
*
* @return this stream's digest, expressed as a byte array
*/
public byte[] getChecksumBytes() {
return getMessageDigest().digest();
}
/**
* Returns this stream's digest, expressed as an hexadecimal string.
*
* @return this stream's digest, expressed as an hexadecimal string
*/
public String getChecksumString() {
return ByteUtils.toHexString(getChecksumBytes());
}
}