Java in a Nutshell, 5th Edition [Electronic resources]

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CipherOutputStreamjavax.crypto

Java 1.4closeable flushable

This class is an output stream that uses a Cipher object to encrypt or decrypt bytes before passing them to another output stream. You must initialize the Cipher object before passing it to the CipherOutputStream( ) constructor. If you are using a Cipher with any kind of padding, you must not call flush( ) until you are done writing all data to the stream; otherwise decryption fails.

Figure 17-3. javax.crypto.CipherOutputStream

public class

CipherOutputStream extends java.io.FilterOutputStream { // Public Constructors public

CipherOutputStream (java.io.OutputStream

os , Cipher

c ); // Protected Constructors protected

CipherOutputStream (java.io.OutputStream

os ); // Public Methods Overriding FilterOutputStream public void

close ( ) throws java.io.IOException; public void

flush ( ) throws java.io.IOException; public void

write (int

b ) throws java.io.IOException; public void

write (byte[ ]

b ) throws java.io.IOException; public void

write (byte[ ]

b , int

off , int

len ) throws java.io.IOException; }