org.apache.poi.poifs.crypt.xor

Class XOREncryptor

java.lang.Object

org.apache.poi.poifs.crypt.Encryptor

org.apache.poi.poifs.crypt.xor.XOREncryptor

All Implemented Interfaces:

java.lang.Cloneable

public class XOREncryptor
extends Encryptor
implements java.lang.Cloneable

Field Summary

Fields inherited from class org.apache.poi.poifs.crypt.Encryptor

DEFAULT_POIFS_ENTRY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	XOREncryptor()

Method Summary

Modifier and Type	Method and Description
XOREncryptor	clone()
void	confirmPassword(java.lang.String password)
void	confirmPassword(java.lang.String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt)
protected void	createEncryptionInfoEntry(DirectoryNode dir)
java.io.OutputStream	getDataStream(DirectoryNode dir) Return a output stream for encrypted data.
org.apache.poi.poifs.crypt.xor.XOREncryptor.XORCipherOutputStream	getDataStream(java.io.OutputStream stream, int initialOffset)
protected int	getKeySizeInBytes()
void	setChunkSize(int chunkSize) Sets the chunk size of the data stream.

Methods inherited from class org.apache.poi.poifs.crypt.Encryptor

getDataStream, getDataStream, getDataStream, getEncryptionInfo, getInstance, getSecretKey, setEncryptionInfo, setSecretKey

Methods inherited from class java.lang.Object

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

Constructor Detail

XOREncryptor

protected XOREncryptor()

Method Detail

confirmPassword

public void confirmPassword(java.lang.String password)

Specified by:

confirmPassword in class Encryptor

confirmPassword

public void confirmPassword(java.lang.String password,
                            byte[] keySpec,
                            byte[] keySalt,
                            byte[] verifier,
                            byte[] verifierSalt,
                            byte[] integritySalt)

Specified by:

confirmPassword in class Encryptor

getDataStream

public java.io.OutputStream getDataStream(DirectoryNode dir)
                                   throws java.io.IOException,
                                          java.security.GeneralSecurityException

Description copied from class: Encryptor

Return a output stream for encrypted data.

Specified by:

getDataStream in class Encryptor

Parameters:

dir - the node to write to

Returns:

encrypted stream

Throws:

java.io.IOException

java.security.GeneralSecurityException

getDataStream

public org.apache.poi.poifs.crypt.xor.XOREncryptor.XORCipherOutputStream getDataStream(java.io.OutputStream stream,
                                                                                       int initialOffset)
                                                                                throws java.io.IOException,
                                                                                       java.security.GeneralSecurityException

Overrides:

getDataStream in class Encryptor

Throws:

java.io.IOException

java.security.GeneralSecurityException

getKeySizeInBytes

protected int getKeySizeInBytes()

setChunkSize

public void setChunkSize(int chunkSize)

Description copied from class: Encryptor

Sets the chunk size of the data stream. Needs to be set before the data stream is requested. When not set, the implementation uses method specific default values

Overrides:

setChunkSize in class Encryptor

Parameters:

chunkSize - the chunk size, i.e. the block size with the same encryption key

createEncryptionInfoEntry

protected void createEncryptionInfoEntry(DirectoryNode dir)
                                  throws java.io.IOException

Throws:

java.io.IOException

clone

public XOREncryptor clone()
                   throws java.lang.CloneNotSupportedException

Overrides:

clone in class Encryptor

Throws:

java.lang.CloneNotSupportedException