org.apache.poi.poifs.crypt.temp

Class EncryptedTempData

java.lang.Object

org.apache.poi.poifs.crypt.temp.EncryptedTempData

@Beta
public class EncryptedTempData
extends java.lang.Object

EncryptedTempData can be used to buffer binary data in a secure way, by using encrypted temp files.

Constructor Summary

Constructors

Constructor and Description
EncryptedTempData()

Method Summary

Modifier and Type	Method and Description
void	dispose() Removes the temporarily backing file
long	getByteCount()
java.io.InputStream	getInputStream() Returns the input stream for reading the previously written encrypted data
java.io.OutputStream	getOutputStream() Returns the output stream for writing the data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EncryptedTempData

public EncryptedTempData()
                  throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getOutputStream

public java.io.OutputStream getOutputStream()
                                     throws java.io.IOException

Returns the output stream for writing the data.

Make sure to close it, otherwise the last cipher block is not written completely.

Returns:

the outputstream

Throws:

java.io.IOException - if the writing to the underlying file fails

getInputStream

public java.io.InputStream getInputStream()
                                   throws java.io.IOException

Returns the input stream for reading the previously written encrypted data

Returns:

the inputstream

Throws:

java.io.IOException - if the reading of the underlying file fails

getByteCount

public long getByteCount()

Returns:

number of bytes stored in the temp data file (the number you should expect after you decrypt the data)

dispose

public void dispose()

Removes the temporarily backing file