com.adobe.internal.pdftoolkit.core.securityframework

Interface EncryptionHandler

public interface EncryptionHandler

Implements specific encryption and decryption algorithms.

Method Summary

Modifier and Type	Method and Description
EncryptionHandlerState	createEncryptionHandlerState()
byte[]	decrypt(byte[] src, byte[] addKey) Decrypts the byte array with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.
void	decrypt(InputByteStream src, OutputByteStream dest, byte[] addKey) Decrypts the byte stream with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.
byte[]	encrypt(byte[] src, byte[] addKey) Encrypts the byte array with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.
void	encrypt(InputByteStream src, OutputByteStream dest, byte[] addKey) Encrypts the byte stream with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.

Method Detail

encrypt

byte[] encrypt(byte[] src,
               byte[] addKey)
        throws PDFSecurityConfigurationException

Encrypts the byte array with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.

The encryption algorithm depends on a particular implementation of this class.

Parameters:

src - the input byte array.

addKey - the addition to the encryption key.

Returns:

encrypted byte array.

Throws:

PDFSecurityConfigurationException

encrypt

void encrypt(InputByteStream src,
             OutputByteStream dest,
             byte[] addKey)
      throws PDFIOException,
             PDFSecurityConfigurationException

Encrypts the byte stream with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.

The encryption algorithm depends on a particular implementation of this class.

Parameters:

src - the input byte stream.

dest - the output stream of bytes

addKey - the addition to the encryption key.

Throws:

PDFSecurityConfigurationException

PDFIOException

decrypt

byte[] decrypt(byte[] src,
               byte[] addKey)
        throws PDFSecurityConfigurationException

Decrypts the byte array with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.

The encryption algorithm depends on a particular implementation of this class.

Parameters:

src - the input byte array.

addKey - the addition to the encryption key.

Returns:

decrypted byte array.

Throws:

PDFSecurityConfigurationException

decrypt

void decrypt(InputByteStream src,
             OutputByteStream dest,
             byte[] addKey)
      throws PDFIOException,
             PDFSecurityConfigurationException

Decrypts the byte stream with the encryption key calculated from the base encryption key held in the implementation and the addKey which is an addition to the base key.

The encryption algorithm depends on a particular implementation of this class.

Parameters:

src - an input stream of bytes.

dest - the output stream of bytes

addKey - the addition to the encryption key.

Throws:

PDFIOException

PDFSecurityConfigurationException

createEncryptionHandlerState

EncryptionHandlerState createEncryptionHandlerState()
                                             throws PDFSecurityConfigurationException

Returns:

EncryptionHandlerState object associated with this EncryptionHandler for sequential decryption/encryption of a data stream.

Throws:

PDFSecurityConfigurationException