diff options
Diffstat (limited to 'libjava/classpath/javax/crypto/CipherOutputStream.java')
-rw-r--r-- | libjava/classpath/javax/crypto/CipherOutputStream.java | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/libjava/classpath/javax/crypto/CipherOutputStream.java b/libjava/classpath/javax/crypto/CipherOutputStream.java deleted file mode 100644 index 170feed4751..00000000000 --- a/libjava/classpath/javax/crypto/CipherOutputStream.java +++ /dev/null @@ -1,154 +0,0 @@ -/* CipherOutputStream.java -- Filters output through a cipher. - Copyright (C) 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath 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, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package javax.crypto; - -import java.io.FilterOutputStream; -import java.io.IOException; -import java.io.OutputStream; - -/** - * A filtered output stream that transforms data written to it with a - * {@link Cipher} before sending it to the underlying output stream. - * - * @author Casey Marshall (csm@gnu.org) - */ -public class CipherOutputStream extends FilterOutputStream -{ - /** The underlying cipher. */ - private Cipher cipher; - - /** - * Create a new cipher output stream. The cipher argument must have already - * been initialized. - * - * @param out The sink for transformed data. - * @param cipher The cipher to transform data with. - */ - public CipherOutputStream(OutputStream out, Cipher cipher) - { - super(out); - this.cipher = (cipher != null) ? cipher : new NullCipher(); - } - - /** - * Create a cipher output stream with no cipher. - * - * @param out The sink for transformed data. - */ - protected CipherOutputStream(OutputStream out) - { - super(out); - } - - /** - * Close this output stream, and the sink output stream. - * <p> - * This method will first invoke the {@link Cipher#doFinal()} method of the - * underlying {@link Cipher}, and writes the output of that method to the - * sink output stream. - * - * @throws IOException If an I/O error occurs, or if an error is caused by - * finalizing the transformation. - */ - public void close() throws IOException - { - try - { - out.write(cipher.doFinal()); - out.flush(); - out.close(); - } - catch (Exception cause) - { - IOException ioex = new IOException(String.valueOf(cause)); - ioex.initCause(cause); - throw ioex; - } - } - - /** - * Flush any pending output. - * - * @throws IOException If an I/O error occurs. - */ - public void flush() throws IOException - { - out.flush(); - } - - /** - * Write a single byte to the output stream. - * - * @param b The next byte. - * @throws IOException If an I/O error occurs, or if the underlying cipher is - * not in the correct state to transform data. - */ - public void write(int b) throws IOException - { - write(new byte[] { (byte) b }, 0, 1); - } - - /** - * Write a byte array to the output stream. - * - * @param buf The next bytes. - * @throws IOException If an I/O error occurs, or if the underlying cipher is - * not in the correct state to transform data. - */ - public void write(byte[] buf) throws IOException - { - write(buf, 0, buf.length); - } - - /** - * Write a portion of a byte array to the output stream. - * - * @param buf The next bytes. - * @param off The offset in the byte array to start. - * @param len The number of bytes to write. - * @throws IOException If an I/O error occurs, or if the underlying cipher is - * not in the correct state to transform data. - */ - public void write(byte[] buf, int off, int len) throws IOException - { - byte[] b = cipher.update(buf, off, len); - if (b != null) - out.write(b); - } -} |