de.intarsys.pdf.crypt

Class SystemSecurityHandlerV4

java.lang.Object

de.intarsys.pdf.crypt.SystemSecurityHandler

de.intarsys.pdf.crypt.SystemSecurityHandlerV4

All Implemented Interfaces:

ISystemSecurityHandler

public class SystemSecurityHandlerV4
extends SystemSecurityHandler

The ISystemSecurityHandler implementing /V 4 of the PDF spec.

The crypt handlers are created lazy and never changed - it is unwise to change any encryption parameters afterwards!

Field Summary

Fields

Modifier and Type	Field and Description
static COSName	CN_AESV2
static COSName	CN_CryptFilter
static COSName	CN_None
static COSName	CN_V2
static COSName	DK_CFM
static COSName	DK_NAME
static COSName	DK_TYPE

Fields inherited from class de.intarsys.pdf.crypt.SystemSecurityHandler

DEFAULT_LENGTH

Method Summary

Methods

Modifier and Type	Method and Description
void	cosAddCryptFilter(COSName name, COSDictionary cryptFilterDict)
COSDictionary	cosGetCryptFilters()
void	cosRemoveCryptFilter(COSName name)
byte[]	decryptFile(COSObjectKey key, COSDictionary dict, byte[] bytes)
byte[]	decryptStream(COSObjectKey key, COSDictionary dict, byte[] bytes)
byte[]	decryptString(COSObjectKey key, byte[] bytes)
byte[]	encryptFile(COSObjectKey key, COSDictionary dict, byte[] bytes)
byte[]	encryptStream(COSObjectKey key, COSDictionary dict, byte[] bytes)
byte[]	encryptString(COSObjectKey key, byte[] bytes)
ICryptHandler	getCryptHandler(COSName name)
int	getLength() The length of the encryption key in bits.
int	getVersion()
void	setEncryptionFilterStream(COSName name)
void	setEncryptionFilterString(COSName name)
void	setEncryptionMethodAES(COSName filterName)
void	setEncryptionMethodArcFour(COSName filterName)
void	setEncryptionMethodNone(COSName filterName)
void	setEncryptMetadata(boolean value)

Methods inherited from class de.intarsys.pdf.crypt.SystemSecurityHandler

attach, authenticate, cosGetEncryption, createFromSt, createNewV1, createNewV2, createNewV4, detach, getContextObject, getEncryption, getSecurityHandler, initialize, popContextObject, pushContextObject, setLength, setSecurityHandler, stGetDoc, updateTrailer

Methods inherited from class java.lang.Object

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

Field Detail

CN_AESV2

public static final COSName CN_AESV2

CN_CryptFilter

public static final COSName CN_CryptFilter

CN_None

public static final COSName CN_None

CN_V2

public static final COSName CN_V2

DK_CFM

public static final COSName DK_CFM

DK_NAME

public static final COSName DK_NAME

DK_TYPE

public static final COSName DK_TYPE

Method Detail

cosAddCryptFilter

public void cosAddCryptFilter(COSName name,
                     COSDictionary cryptFilterDict)

cosGetCryptFilters

public COSDictionary cosGetCryptFilters()

cosRemoveCryptFilter

public void cosRemoveCryptFilter(COSName name)

decryptFile

public byte[] decryptFile(COSObjectKey key,
                 COSDictionary dict,
                 byte[] bytes)
                   throws COSSecurityException

Throws:

COSSecurityException

decryptStream

public byte[] decryptStream(COSObjectKey key,
                   COSDictionary dict,
                   byte[] bytes)
                     throws COSSecurityException

Throws:

COSSecurityException

decryptString

public byte[] decryptString(COSObjectKey key,
                   byte[] bytes)
                     throws COSSecurityException

Throws:

COSSecurityException

encryptFile

public byte[] encryptFile(COSObjectKey key,
                 COSDictionary dict,
                 byte[] bytes)
                   throws COSSecurityException

Throws:

COSSecurityException

encryptStream

public byte[] encryptStream(COSObjectKey key,
                   COSDictionary dict,
                   byte[] bytes)
                     throws COSSecurityException

Throws:

COSSecurityException

encryptString

public byte[] encryptString(COSObjectKey key,
                   byte[] bytes)
                     throws COSSecurityException

Throws:

COSSecurityException

getCryptHandler

public ICryptHandler getCryptHandler(COSName name)
                              throws COSSecurityException

Throws:

COSSecurityException

getLength

public int getLength()

Description copied from interface: ISystemSecurityHandler

The length of the encryption key in bits.

Specified by:

getLength in interface ISystemSecurityHandler

Overrides:

getLength in class SystemSecurityHandler

Returns:

The length of the encryption key in bits.

getVersion

public int getVersion()

Specified by:

getVersion in class SystemSecurityHandler

setEncryptionFilterStream

public void setEncryptionFilterStream(COSName name)

setEncryptionFilterString

public void setEncryptionFilterString(COSName name)

setEncryptionMethodAES

public void setEncryptionMethodAES(COSName filterName)

setEncryptionMethodArcFour

public void setEncryptionMethodArcFour(COSName filterName)

setEncryptionMethodNone

public void setEncryptionMethodNone(COSName filterName)

setEncryptMetadata

public void setEncryptMetadata(boolean value)