org.apache.poi.hslf.record

Class DocumentEncryptionAtom

java.lang.Object

org.apache.poi.hslf.record.Record

org.apache.poi.hslf.record.RecordAtom

org.apache.poi.hslf.record.PositionDependentRecordAtom

org.apache.poi.hslf.record.DocumentEncryptionAtom

All Implemented Interfaces:

PositionDependentRecord

public final class DocumentEncryptionAtom
extends PositionDependentRecordAtom

A Document Encryption Atom (type 12052). Holds information on the Encryption of a Document

Author:

Nick Burch

Field Summary

Fields inherited from class org.apache.poi.hslf.record.Record

logger

Constructor Summary

Constructors

Modifier	Constructor and Description
	DocumentEncryptionAtom()
protected	DocumentEncryptionAtom(byte[] source, int start, int len) For the Document Encryption Atom

Method Summary

Modifier and Type	Method and Description
EncryptionInfo	getEncryptionInfo()
java.lang.String	getEncryptionProviderName() Return the name of the encryption provider used
int	getKeyLength() Return the length of the encryption key, in bits
long	getRecordType() We are of type 12052
void	initializeEncryptionInfo(int keyBits) Initializes the encryption settings
void	updateOtherRecordReferences(java.util.Map<java.lang.Integer,java.lang.Integer> oldToNewReferencesLookup) Offer the record the list of records that have changed their location as part of the writeout.
void	writeOut(java.io.OutputStream out) Write the contents of the record back, so it can be written to disk

Methods inherited from class org.apache.poi.hslf.record.PositionDependentRecordAtom

getLastOnDiskOffset, setLastOnDiskOffset

Methods inherited from class org.apache.poi.hslf.record.RecordAtom

getChildRecords, isAnAtom

Methods inherited from class org.apache.poi.hslf.record.Record

buildRecordAtOffset, createRecordForType, findChildRecords, writeLittleEndian, writeLittleEndian

Methods inherited from class java.lang.Object

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

Constructor Detail

DocumentEncryptionAtom

protected DocumentEncryptionAtom(byte[] source,
                                 int start,
                                 int len)

For the Document Encryption Atom

DocumentEncryptionAtom

public DocumentEncryptionAtom()

Method Detail

initializeEncryptionInfo

public void initializeEncryptionInfo(int keyBits)

Initializes the encryption settings

Parameters:

keyBits - see CipherAlgorithm.rc4 for allowed values, use -1 for default size

getKeyLength

public int getKeyLength()

Return the length of the encryption key, in bits

getEncryptionProviderName

public java.lang.String getEncryptionProviderName()

Return the name of the encryption provider used

getEncryptionInfo

public EncryptionInfo getEncryptionInfo()

Returns:

the EncryptionInfo object for details about encryption settings

getRecordType

public long getRecordType()

We are of type 12052

Specified by:

getRecordType in class Record

writeOut

public void writeOut(java.io.OutputStream out)
              throws java.io.IOException

Write the contents of the record back, so it can be written to disk

Specified by:

writeOut in class Record

Throws:

java.io.IOException

updateOtherRecordReferences

public void updateOtherRecordReferences(java.util.Map<java.lang.Integer,java.lang.Integer> oldToNewReferencesLookup)

Description copied from class: PositionDependentRecordAtom

Offer the record the list of records that have changed their location as part of the writeout. Allows records to update their internal pointers to other records locations

Specified by:

updateOtherRecordReferences in interface PositionDependentRecord

Specified by:

updateOtherRecordReferences in class PositionDependentRecordAtom