com.lowagie.text.pdf
Class PdfEncryption

java.lang.Object
  |
  +--com.lowagie.text.pdf.PdfEncryption

public class PdfEncryption

extends Object

Author:

Paulo Soares (psoares@consiste.pt)

Field Summary

(package private) byte[]	documentID
(package private) byte[]	extra Work area to prepare the object/generation bytes
(package private) byte[]	key The encryption key for a particular object/generation
(package private) int	keySize The encryption key length for a particular object/generation
(package private) MessageDigest	md5 The message digest algorithm MD5
(package private) byte[]	mkey The global encryption key
(package private) byte[]	ownerKey The encryption key for the owner
(package private) static byte[]	pad
(package private) int	permissions
(package private) static long	seq
(package private) byte[]	state
(package private) byte[]	userKey The encryption key for the user
(package private) int	x
(package private) int	y

Constructor Summary

PdfEncryption()

Method Summary

static byte[]	createDocumentId()
static PdfObject	createInfoId(byte[] id)
void	encryptRC4(byte[] data)
void	encryptRC4(byte[] dataIn, byte[] dataOut)
void	encryptRC4(byte[] data, int off, int len)
void	encryptRC4(byte[] dataIn, int off, int len, byte[] dataOut)
PdfDictionary	getEncryptionDictionary()
PdfObject	getFileID()
void	prepareKey()
void	prepareRC4Key(byte[] key)
void	prepareRC4Key(byte[] key, int off, int len)
void	setHashKey(int number, int generation)
void	setupAllKeys(byte[] userPassword, byte[] ownerPassword, int permissions, boolean strength128Bits)

Methods inherited from class java.lang.Object

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

Field Detail

pad

static final byte[] pad

state

byte[] state

x

int x

y

int y

key

byte[] key

The encryption key for a particular object/generation

keySize

int keySize

The encryption key length for a particular object/generation

mkey

byte[] mkey

The global encryption key

extra

byte[] extra

Work area to prepare the object/generation bytes

md5

MessageDigest md5

The message digest algorithm MD5

ownerKey

byte[] ownerKey

The encryption key for the owner

userKey

byte[] userKey

The encryption key for the user

permissions

int permissions

documentID

byte[] documentID

seq

static long seq

Constructor Detail

PdfEncryption

public PdfEncryption()

Method Detail

setupAllKeys

public void setupAllKeys(byte[] userPassword,
                         byte[] ownerPassword,
                         int permissions,
                         boolean strength128Bits)

prepareKey

public void prepareKey()

setHashKey

public void setHashKey(int number,
                       int generation)

getFileID

public PdfObject getFileID()

getEncryptionDictionary

public PdfDictionary getEncryptionDictionary()

prepareRC4Key

public void prepareRC4Key(byte[] key)

prepareRC4Key

public void prepareRC4Key(byte[] key,
                          int off,
                          int len)

encryptRC4

public void encryptRC4(byte[] dataIn,
                       int off,
                       int len,
                       byte[] dataOut)

encryptRC4

public void encryptRC4(byte[] data,
                       int off,
                       int len)

encryptRC4

public void encryptRC4(byte[] dataIn,
                       byte[] dataOut)

encryptRC4

public void encryptRC4(byte[] data)

createDocumentId

public static byte[] createDocumentId()

createInfoId

public static PdfObject createInfoId(byte[] id)