/**************************************************************************
* Copyright (c) 2001 by Punch Telematix. All rights reserved. *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions *
* are met: *
* 1. Redistributions of source code must retain the above copyright *
* notice, this list of conditions and the following disclaimer. *
* 2. 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. *
* 3. Neither the name of Punch Telematix nor the names of *
* other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission.*
* *
* THIS SOFTWARE IS PROVIDED ``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 PUNCH TELEMATIX OR OTHER 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. *
**************************************************************************/
package javax.crypto;
import java.io.FilterOutputStream;
import java.io.OutputStream;
import java.io.IOException;
public class CipherOutputStream extends FilterOutputStream {
private Cipher cipher;
public CipherOutputStream(OutputStream out, Cipher c){
super(out);
cipher = c;
}
protected CipherOutputStream(OutputStream out){
super(out);
cipher = new NullCipher();
}
public void close() throws IOException {
if(cipher != null){
try {
out.write(cipher.doFinal());
}
catch(Exception e){
throw new IOException("WRAPPING EXCEPTION "+e);
}
out.close();
cipher = null;
}
}
public void flush() throws IOException {
if(cipher == null){
throw new IOException("STREAM IS CLOSED");
}
}
public void write(int b) throws IOException {
byte[] theByte = new byte[1];
theByte[0] = (byte)b;
write(theByte, 0 , 1);
}
public void write(byte[] bytes) throws IOException {
write(bytes, 0, bytes.length);
}
public void write(byte[] bytes, int offset, int length) throws IOException {
if(cipher == null){
throw new IOException("STREAM IS CLOSED");
}
out.write(cipher.update(bytes, offset, length));
}
}