Package org.apache.fop.pdf

Class PDFEncryptionJCE.RevBefore5Engine

java.lang.Object

org.apache.fop.pdf.PDFEncryptionJCE.InitializationEngine

org.apache.fop.pdf.PDFEncryptionJCE.RevBefore5Engine

Direct Known Subclasses:

PDFEncryptionJCE.Rev2Engine, PDFEncryptionJCE.Rev3Engine

Enclosing class:

PDFEncryptionJCE

private abstract class PDFEncryptionJCE.RevBefore5Engine
extends PDFEncryptionJCE.InitializationEngine

Field Summary

Fields

Modifier and Type	Field	Description
protected final byte[]	padding	Padding for passwords.

Fields inherited from class org.apache.fop.pdf.PDFEncryptionJCE.InitializationEngine

encryptionLengthInBytes, oValue, permissions, preparedOwnerPassword, preparedUserPassword, uValue

Constructor Summary

Constructors

Constructor	Description
RevBefore5Engine(PDFEncryptionJCE.EncryptionSettings encryptionSettings)

Method Summary

Modifier and Type	Method	Description
protected void	computeOValue()	Applies Algorithm 3.3 Page 79 of the PDF 1.4 Reference.
protected abstract byte[]	computeOValueStep3(byte[] hash)
protected abstract byte[]	computeOValueStep7(byte[] key, byte[] encryptionResult)
protected void	createEncryptionKey()	Applies Algorithm 3.2 Page 78 of the PDF 1.4 Reference.
protected abstract byte[]	createEncryptionKeyStep6(byte[] hash)
protected byte[]	preparePassword(String password)	Adds padding to the password as directed in page 78 of the PDF 1.4 Reference.
(package private) void	run()

Methods inherited from class org.apache.fop.pdf.PDFEncryptionJCE.InitializationEngine

computeUValue, getEncryptionDictionaryPart

Methods inherited from class java.lang.Object

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

Field Details

padding

protected final byte[] padding

Padding for passwords.

Constructor Details

RevBefore5Engine

RevBefore5Engine(PDFEncryptionJCE.EncryptionSettings encryptionSettings)

Method Details

computeOValue

protected void computeOValue()

Applies Algorithm 3.3 Page 79 of the PDF 1.4 Reference.

Specified by:

computeOValue in class PDFEncryptionJCE.InitializationEngine

createEncryptionKey

protected void createEncryptionKey()

Applies Algorithm 3.2 Page 78 of the PDF 1.4 Reference.

Specified by:

createEncryptionKey in class PDFEncryptionJCE.InitializationEngine

preparePassword

protected byte[] preparePassword(String password)

Adds padding to the password as directed in page 78 of the PDF 1.4 Reference.

Specified by:

preparePassword in class PDFEncryptionJCE.InitializationEngine

Parameters:

password - the password

Returns:

the password with additional padding if necessary

run

void run()

Overrides:

run in class PDFEncryptionJCE.InitializationEngine

computeOValueStep3

protected abstract byte[] computeOValueStep3(byte[] hash)

computeOValueStep7

protected abstract byte[] computeOValueStep7(byte[] key,
 byte[] encryptionResult)

createEncryptionKeyStep6

protected abstract byte[] createEncryptionKeyStep6(byte[] hash)