org.jpedal.io.security

Class DecryptionFactory

java.lang.Object

org.jpedal.io.security.DecryptionFactory

public class DecryptionFactory
extends Object

Provide AES/RSA decryption support

Constructor Summary

Constructors

Constructor and Description
DecryptionFactory(byte[] ID, byte[] encryptionPassword)
DecryptionFactory(byte[] id, Certificate certificate, PrivateKey key) version for using public certificates

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] data, String ref, boolean isEncryption, String cacheName, boolean alwaysUseRC4, boolean isString) reads the line/s from file which make up an object includes move
byte[]	decryptString(byte[] newString, String objectRef)
void	dispose()
byte[]	extractCertificateData(byte[][] recipients, Certificate certificate, Key key) cycle through all possible values to find match (only tested with Bouncy castle)
void	flush()
boolean	getBooleanValue(int key) show if file can be displayed
byte[]	getEncHash()
int	getPDFflag(Integer flag)
boolean	hasPassword() show if U or O value present
boolean	isAES()
void	readEncryptionObject(PdfObject encyptionObj, PdfFileReader pdfFileReader) extract metadata for encryption object
void	reset(byte[] encryptionPassword)
void	setCipherNull()

Methods inherited from class java.lang.Object

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

Constructor Detail

DecryptionFactory

public DecryptionFactory(byte[] ID,
                         byte[] encryptionPassword)

DecryptionFactory

public DecryptionFactory(byte[] id,
                         Certificate certificate,
                         PrivateKey key)

version for using public certificates

Parameters:

id -

certificate -

key -

Method Detail

readEncryptionObject

public void readEncryptionObject(PdfObject encyptionObj,
                                 PdfFileReader pdfFileReader)
                          throws PdfSecurityException

extract metadata for encryption object

Throws:

PdfSecurityException

extractCertificateData

public byte[] extractCertificateData(byte[][] recipients,
                                     Certificate certificate,
                                     Key key)

cycle through all possible values to find match (only tested with Bouncy castle)

Parameters:

certificate -

key -

decrypt

public byte[] decrypt(byte[] data,
                      String ref,
                      boolean isEncryption,
                      String cacheName,
                      boolean alwaysUseRC4,
                      boolean isString)
               throws PdfSecurityException

reads the line/s from file which make up an object includes move

Throws:

PdfSecurityException

getBooleanValue

public boolean getBooleanValue(int key)

show if file can be displayed

isAES

public boolean isAES()

decryptString

public byte[] decryptString(byte[] newString,
                            String objectRef)
                     throws PdfSecurityException

Throws:

PdfSecurityException

getPDFflag

public int getPDFflag(Integer flag)

reset

public void reset(byte[] encryptionPassword)

flush

public void flush()

dispose

public void dispose()

hasPassword

public boolean hasPassword()

show if U or O value present

Returns:

setCipherNull

public void setCipherNull()

getEncHash

public byte[] getEncHash()