org.apache.poi.poifs.crypt.standard

Class StandardEncryptor

java.lang.Object

org.apache.poi.poifs.crypt.Encryptor

org.apache.poi.poifs.crypt.standard.StandardEncryptor

All Implemented Interfaces:

java.lang.Cloneable

public class StandardEncryptor
extends Encryptor
implements java.lang.Cloneable

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	StandardEncryptor.StandardCipherOutputStream

Field Summary

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

DEFAULT_POIFS_ENTRY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StandardEncryptor()

Method Summary

Modifier and Type	Method and Description
StandardEncryptor	clone()
void	confirmPassword(java.lang.String password)
void	confirmPassword(java.lang.String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt) Fills the fields of verifier and header with the calculated hashes based on the password and a random salt see [MS-OFFCRYPTO] - 2.3.4.7 ECMA-376 Document Encryption Key Generation
protected void	createEncryptionInfoEntry(DirectoryNode dir)
java.io.OutputStream	getDataStream(DirectoryNode dir) Return a output stream for encrypted data.
protected int	getKeySizeInBytes()

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardEncryptor

protected StandardEncryptor()

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)

Fills the fields of verifier and header with the calculated hashes based on the password and a random salt see [MS-OFFCRYPTO] - 2.3.4.7 ECMA-376 Document Encryption Key Generation

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

getKeySizeInBytes

protected int getKeySizeInBytes()

createEncryptionInfoEntry

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

Throws:

java.io.IOException

clone

public StandardEncryptor clone()
                        throws java.lang.CloneNotSupportedException

Overrides:

clone in class Encryptor

Throws:

java.lang.CloneNotSupportedException