Package com.adobe.internal.pdftoolkit.core.cos

Class CosEncryption

java.lang.Object

com.adobe.internal.pdftoolkit.core.cos.CosEncryption

public class CosEncryption
extends Object

Performs all encryption-related operations on a Cos Document

Constructor Summary

Constructors

Constructor	Description
CosEncryption(CosDocument doc)

Method Summary

Modifier and Type	Method	Description
boolean	authenticateDecryption(DecryptedState decryptedState)
InputByteStream	decryptStream(ASName cryptFilter, CosStream strObj, InputByteStream content)	Get the decrypted contents of a stream.
byte[]	decryptString(CosString strObj, byte[] content)	Get the decrypted bytes for a string
InputByteStream	encryptStream(ASName cryptFilter, CosStream strObj, InputByteStream content)	Get the encrypted contents of a stream.
byte[]	encryptString(CosString strObj, byte[] content)	Get the encrypted bytes for a string
Map	getDecryptionMap()
SecurityManager	getDecryptionSecurityManager()
SecurityHandler	getDefaultDecryptionHandler()	Return the default decryption handler
CosDictionary	getEncryption()
EnableEncryption	getEncryptionImpl()	Return the encryption implementation
Map	getEncryptionMap()
SecurityManager	getEncryptionSecurityManager()
boolean	getEncryptionState()
boolean	needsDecryption()
boolean	needsEncryption()
void	resetDecryptionSecurityManager()
void	resetEncryptionSecurityManager()
void	setDecryptionAsEncryption()	Sets Security Manager for decryption equal to the Security Manager for encryption.
void	setDecryptionSecurityManager(SecurityManager securityMgr)
void	setEncryptionSecurityManager(SecurityManager securityMgr, Map encryptParams)
boolean	setEncryptionState(boolean doIt)
boolean	setNeedsDecryption(boolean decrypt)
void	setupDecryption()
void	setupEncryption()	Setup encryption

Methods inherited from class java.lang.Object

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

Constructor Details

CosEncryption

public CosEncryption(CosDocument doc)

Method Details

setupDecryption

public void setupDecryption()
                     throws PDFCosParseException,
PDFIOException,
PDFSecurityException

Throws:

PDFCosParseException

PDFIOException

PDFSecurityException

needsDecryption

public boolean needsDecryption()

setNeedsDecryption

public boolean setNeedsDecryption(boolean decrypt)

needsEncryption

public boolean needsEncryption()

getEncryption

public CosDictionary getEncryption()

getDecryptionMap

public Map getDecryptionMap()
                     throws PDFCosParseException,
PDFIOException,
PDFSecurityException

Throws:

PDFCosParseException

PDFIOException

PDFSecurityException

getEncryptionMap

public Map getEncryptionMap()
                     throws PDFSecurityAuthorizationException

Throws:

PDFSecurityAuthorizationException

getDefaultDecryptionHandler

public SecurityHandler getDefaultDecryptionHandler()
                                            throws PDFCosParseException,
PDFSecurityException

Return the default decryption handler

Throws:

PDFCosParseException

PDFSecurityException

getEncryptionImpl

public EnableEncryption getEncryptionImpl()
                                   throws PDFUnsupportedFeatureException

Return the encryption implementation

Throws:

PDFUnsupportedFeatureException - if there is no encryption implementation This represents a "can't happen" situation

getDecryptionSecurityManager

public SecurityManager getDecryptionSecurityManager()

authenticateDecryption

public boolean authenticateDecryption(DecryptedState decryptedState)
                               throws PDFSecurityException

Throws:

PDFSecurityException

setDecryptionSecurityManager

public void setDecryptionSecurityManager(SecurityManager securityMgr)
                                  throws PDFSecurityException,
PDFCosParseException,
PDFIOException

Throws:

PDFSecurityException

PDFCosParseException

PDFIOException

getEncryptionSecurityManager

public SecurityManager getEncryptionSecurityManager()

setEncryptionSecurityManager

public void setEncryptionSecurityManager(SecurityManager securityMgr,
 Map encryptParams)

setDecryptionAsEncryption

public void setDecryptionAsEncryption()
                               throws PDFSecurityException,
PDFCosParseException,
PDFIOException

Sets Security Manager for decryption equal to the Security Manager for encryption. Resets Security Manager for decryption if the Security Manager for encryption is not set.

Throws:

PDFSecurityException

PDFCosParseException

PDFIOException

setupEncryption

public void setupEncryption()
                     throws PDFCosParseException,
PDFIOException,
PDFSecurityException

Setup encryption

Throws:

PDFCosParseException

PDFIOException

PDFSecurityException

resetEncryptionSecurityManager

public void resetEncryptionSecurityManager()

resetDecryptionSecurityManager

public void resetDecryptionSecurityManager()

encryptString

public byte[] encryptString(CosString strObj,
 byte[] content)
                     throws PDFSecurityException

Get the encrypted bytes for a string

Throws:

PDFUnsupportedFeatureException - if no encryption implementation is in place

PDFSecurityException

decryptString

public byte[] decryptString(CosString strObj,
 byte[] content)
                     throws PDFSecurityException

Get the decrypted bytes for a string

Throws:

PDFUnsupportedFeatureException

PDFSecurityException

PDFSecurityException

PDFUnsupportedFeatureException - if no encryption implementation is in place

decryptStream

public InputByteStream decryptStream(ASName cryptFilter,
 CosStream strObj,
 InputByteStream content)
                              throws PDFIOException,
PDFSecurityException,
PDFCosParseException

Get the decrypted contents of a stream. This stream becomes the property of the caller and must be closed by them.

Throws:

PDFIOException

PDFSecurityException

PDFCosParseException

PDFUnsupportedFeatureException - if no encryption implementation is in place

encryptStream

public InputByteStream encryptStream(ASName cryptFilter,
 CosStream strObj,
 InputByteStream content)
                              throws PDFCosParseException,
PDFIOException,
PDFSecurityException

Get the encrypted contents of a stream. This encrypts the entire contents of the InputByteStream. If the caller desires to enrypt only a portion of an InputByteStream they should slice the original InputByteStream. The returned encrypted stream becomes the property of the caller and must be closed by them.

Throws:

PDFCosParseException

PDFIOException

PDFSecurityException

PDFUnsupportedFeatureException - if no encryption implementation is in place

setEncryptionState

public boolean setEncryptionState(boolean doIt)

getEncryptionState

public boolean getEncryptionState()