org.apache.poi.poifs.crypt.agile

Class AgileEncryptor

java.lang.Object

org.apache.poi.poifs.crypt.Encryptor

org.apache.poi.poifs.crypt.agile.AgileEncryptor

All Implemented Interfaces:

java.lang.Cloneable

public class AgileEncryptor
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	AgileEncryptor()

Method Summary

Modifier and Type	Method and Description
AgileEncryptor	clone()
void	confirmPassword(java.lang.String password)
void	confirmPassword(java.lang.String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt)
protected com.microsoft.schemas.office.x2006.encryption.EncryptionDocument	createEncryptionDocument()
protected void	createEncryptionInfoEntry(DirectoryNode dir, java.io.File tmpFile)
java.io.OutputStream	getDataStream(DirectoryNode dir) Return a output stream for encrypted data.
protected void	marshallEncryptionDocument(com.microsoft.schemas.office.x2006.encryption.EncryptionDocument ed, LittleEndianByteArrayOutputStream os)
protected void	updateIntegrityHMAC(java.io.File tmpFile, int oleStreamSize) Generate an HMAC, as specified in [RFC2104], of the encrypted form of the data (message), which the DataIntegrity element will verify by using the Salt generated in step 2 as the key.

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

AgileEncryptor

protected AgileEncryptor()

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

updateIntegrityHMAC

protected void updateIntegrityHMAC(java.io.File tmpFile,
                                   int oleStreamSize)
                            throws java.security.GeneralSecurityException,
                                   java.io.IOException

Generate an HMAC, as specified in [RFC2104], of the encrypted form of the data (message), which the DataIntegrity element will verify by using the Salt generated in step 2 as the key. Note that the entire EncryptedPackage stream (1), including the StreamSize field, MUST be used as the message. Encrypt the HMAC as in step 3 by using a blockKey byte array consisting of the following bytes: 0xa0, 0x67, 0x7f, 0x02, 0xb2, 0x2c, 0x84, and 0x33.

Throws:

java.security.GeneralSecurityException

java.io.IOException

createEncryptionDocument

protected com.microsoft.schemas.office.x2006.encryption.EncryptionDocument createEncryptionDocument()

marshallEncryptionDocument

protected void marshallEncryptionDocument(com.microsoft.schemas.office.x2006.encryption.EncryptionDocument ed,
                                          LittleEndianByteArrayOutputStream os)

createEncryptionInfoEntry

protected void createEncryptionInfoEntry(DirectoryNode dir,
                                         java.io.File tmpFile)
                                  throws java.io.IOException,
                                         java.security.GeneralSecurityException

Throws:

java.io.IOException

java.security.GeneralSecurityException

clone

public AgileEncryptor clone()
                     throws java.lang.CloneNotSupportedException

Overrides:

clone in class Encryptor

Throws:

java.lang.CloneNotSupportedException