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), Kazuya Ujihara

Field Summary

Fields

Modifier and Type	Field and Description
static int	AES_128
protected PdfPublicKeySecurityHandler	publicKeyHandler The public key security handler for certificate encryption
static int	STANDARD_ENCRYPTION_128
static int	STANDARD_ENCRYPTION_40

Constructor Summary

Constructors

Constructor and Description
PdfEncryption()
PdfEncryption(PdfEncryption enc)

Method Summary

Modifier and Type	Method and Description
void	addRecipient(Certificate cert, int permission)
int	calculateStreamSize(int n)
byte[]	computeUserPassword(byte[] ownerPassword)
static byte[]	createDocumentId()
static PdfObject	createInfoId(byte[] id)
byte[]	decryptByteArray(byte[] b)
byte[]	encryptByteArray(byte[] b)
int	getCryptoMode()
StandardDecryption	getDecryptor()
PdfDictionary	getEncryptionDictionary()
OutputStreamEncryption	getEncryptionStream(OutputStream os)
PdfObject	getFileID()
boolean	isEmbeddedFilesOnly() Indicates if only the embedded files have to be encrypted.
boolean	isMetadataEncrypted()
void	setCryptoMode(int mode, int kl)
void	setHashKey(int number, int generation)
void	setupAllKeys(byte[] userPassword, byte[] ownerPassword, int permissions)
void	setupByEncryptionKey(byte[] key, int keylength)
void	setupByOwnerPassword(byte[] documentID, byte[] ownerPassword, byte[] userKey, byte[] ownerKey, int permissions)
void	setupByUserPassword(byte[] documentID, byte[] userPassword, byte[] ownerKey, int permissions)

Methods inherited from class java.lang.Object

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

Field Detail

STANDARD_ENCRYPTION_40

public static final int STANDARD_ENCRYPTION_40

See Also:

Constant Field Values

STANDARD_ENCRYPTION_128

public static final int STANDARD_ENCRYPTION_128

See Also:

Constant Field Values

AES_128

public static final int AES_128

See Also:

Constant Field Values

publicKeyHandler

protected PdfPublicKeySecurityHandler publicKeyHandler

The public key security handler for certificate encryption

Constructor Detail

PdfEncryption

public PdfEncryption()

PdfEncryption

public PdfEncryption(PdfEncryption enc)

Method Detail

setCryptoMode

public void setCryptoMode(int mode,
                          int kl)

getCryptoMode

public int getCryptoMode()

isMetadataEncrypted

public boolean isMetadataEncrypted()

isEmbeddedFilesOnly

public boolean isEmbeddedFilesOnly()

Indicates if only the embedded files have to be encrypted.

Returns:

if true only the embedded files will be encrypted

Since:

2.1.3

setupAllKeys

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

createDocumentId

public static byte[] createDocumentId()

setupByUserPassword

public void setupByUserPassword(byte[] documentID,
                                byte[] userPassword,
                                byte[] ownerKey,
                                int permissions)

Parameters:

documentID - byte array of document id

userPassword - byte array of user password

ownerKey - byte array of owner key

permissions - permissions

setupByOwnerPassword

public void setupByOwnerPassword(byte[] documentID,
                                 byte[] ownerPassword,
                                 byte[] userKey,
                                 byte[] ownerKey,
                                 int permissions)

Parameters:

documentID - byte array of document id

ownerPassword - byte array of owner password

userKey - byte array of user key

ownerKey - byte array of owner key

permissions - permissions

setupByEncryptionKey

public void setupByEncryptionKey(byte[] key,
                                 int keylength)

setHashKey

public void setHashKey(int number,
                       int generation)

createInfoId

public static PdfObject createInfoId(byte[] id)

getEncryptionDictionary

public PdfDictionary getEncryptionDictionary()

getFileID

public PdfObject getFileID()

getEncryptionStream

public OutputStreamEncryption getEncryptionStream(OutputStream os)

calculateStreamSize

public int calculateStreamSize(int n)

encryptByteArray

public byte[] encryptByteArray(byte[] b)

getDecryptor

public StandardDecryption getDecryptor()

decryptByteArray

public byte[] decryptByteArray(byte[] b)

addRecipient

public void addRecipient(Certificate cert,
                         int permission)

computeUserPassword

public byte[] computeUserPassword(byte[] ownerPassword)