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:

GenericRecord

public class AgileEncryptor
extends Encryptor

Field Summary

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

DEFAULT_POIFS_ENTRY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AgileEncryptor()
protected	AgileEncryptor(AgileEncryptor other)

Method Summary

Modifier and Type	Method and Description
void	confirmPassword(String password)
void	confirmPassword(String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt)
AgileEncryptor	copy()
protected EncryptionDocument	createEncryptionDocument()
OutputStream	getDataStream(DirectoryNode dir) Return an output stream for encrypted data.
protected void	marshallEncryptionDocument(EncryptionDocument ed, LittleEndianByteArrayOutputStream os)
protected void	updateIntegrityHMAC(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, getGenericProperties, getInstance, getSecretKey, setChunkSize, setEncryptionInfo, setSecretKey

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.poi.common.usermodel.GenericRecord

getGenericChildren, getGenericRecordType

Constructor Detail

AgileEncryptor

protected AgileEncryptor()

AgileEncryptor

protected AgileEncryptor(AgileEncryptor other)

Method Detail

confirmPassword

public void confirmPassword(String password)

Specified by:

confirmPassword in class Encryptor

confirmPassword

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

Specified by:

confirmPassword in class Encryptor

getDataStream

public OutputStream getDataStream(DirectoryNode dir)
                           throws IOException,
                                  GeneralSecurityException

Description copied from class: Encryptor

Return an output stream for encrypted data.

Specified by:

getDataStream in class Encryptor

Parameters:

dir - the node to write to

Returns:

encrypted stream

Throws:

IOException

GeneralSecurityException

updateIntegrityHMAC

protected void updateIntegrityHMAC(File tmpFile,
                                   int oleStreamSize)
                            throws GeneralSecurityException,
                                   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:

GeneralSecurityException

IOException

createEncryptionDocument

protected EncryptionDocument createEncryptionDocument()

marshallEncryptionDocument

protected void marshallEncryptionDocument(EncryptionDocument ed,
                                          LittleEndianByteArrayOutputStream os)

copy

public AgileEncryptor copy()

Specified by:

copy in class Encryptor