com.itextpdf.text.pdf
Class OutputStreamEncryption

java.lang.Object
  extended by java.io.OutputStream
      extended by com.itextpdf.text.pdf.OutputStreamEncryption
All Implemented Interfaces:
Closeable, Flushable

public class OutputStreamEncryption
extends OutputStream


Field Summary
private  boolean aes
           
private static int AES_128
           
protected  ARCFOUREncryption arcfour
           
protected  AESCipher cipher
           
private  boolean finished
           
protected  OutputStream out
           
private  byte[] sb
           
 
Constructor Summary
OutputStreamEncryption(OutputStream out, byte[] key, int revision)
           
OutputStreamEncryption(OutputStream out, byte[] key, int off, int len, int revision)
          Creates a new instance of OutputStreamCounter
 
Method Summary
 void close()
          Closes this output stream and releases any system resources associated with this stream.
 void finish()
           
 void flush()
          Flushes this output stream and forces any buffered output bytes to be written out.
 void write(byte[] b)
          Writes b.length bytes from the specified byte array to this output stream.
 void write(byte[] b, int off, int len)
          Writes len bytes from the specified byte array starting at offset off to this output stream.
 void write(int b)
          Writes the specified byte to this output stream.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

out

protected OutputStream out

arcfour

protected ARCFOUREncryption arcfour

cipher

protected AESCipher cipher

sb

private byte[] sb

AES_128

private static final int AES_128
See Also:
Constant Field Values

aes

private boolean aes

finished

private boolean finished
Constructor Detail

OutputStreamEncryption

public OutputStreamEncryption(OutputStream out,
                              byte[] key,
                              int off,
                              int len,
                              int revision)
Creates a new instance of OutputStreamCounter


OutputStreamEncryption

public OutputStreamEncryption(OutputStream out,
                              byte[] key,
                              int revision)
Method Detail

close

public void close()
           throws IOException
Closes this output stream and releases any system resources associated with this stream. The general contract of close is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.

The close method of OutputStream does nothing.

Specified by:
close in interface Closeable
Overrides:
close in class OutputStream
Throws:
IOException - if an I/O error occurs.

flush

public void flush()
           throws IOException
Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

The flush method of OutputStream does nothing.

Specified by:
flush in interface Flushable
Overrides:
flush in class OutputStream
Throws:
IOException - if an I/O error occurs.

write

public void write(byte[] b)
           throws IOException
Writes b.length bytes from the specified byte array to this output stream. The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).

Overrides:
write in class OutputStream
Parameters:
b - the data.
Throws:
IOException - if an I/O error occurs.
See Also:
OutputStream.write(byte[], int, int)

write

public void write(int b)
           throws IOException
Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Subclasses of OutputStream must provide an implementation for this method.

Specified by:
write in class OutputStream
Parameters:
b - the byte.
Throws:
IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException
Writes len bytes from the specified byte array starting at offset off to this output stream. The general contract for write(b, off, len) is that some of the bytes in the array b are written to the output stream in order; element b[off] is the first byte written and b[off+len-1] is the last byte written by this operation.

The write method of OutputStream calls the write method of one argument on each of the bytes to be written out. Subclasses are encouraged to override this method and provide a more efficient implementation.

If b is null, a NullPointerException is thrown.

If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown.

Overrides:
write in class OutputStream
Parameters:
b - the data.
off - the start offset in the data.
len - the number of bytes to write.
Throws:
IOException - if an I/O error occurs. In particular, an IOException is thrown if the output stream is closed.

finish

public void finish()
            throws IOException
Throws:
IOException

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