com.healthmarketscience.jackcess.impl.office
Class StreamCipherProvider

java.lang.Object
  com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler
      com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler
          com.healthmarketscience.jackcess.impl.office.StreamCipherProvider

All Implemented Interfaces:

com.healthmarketscience.jackcess.impl.CodecHandler

Direct Known Subclasses:

OfficeBinaryDocRC4Provider, RC4CryptoAPIProvider

public abstract class StreamCipherProvider
extends OfficeCryptCodecHandler

Author:

James Ahlborn

Nested Class Summary

Nested classes/interfaces inherited from class com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler

OfficeCryptCodecHandler.Phase

Field Summary

Fields inherited from class com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler

CIPHER_DECRYPT_MODE, CIPHER_ENCRYPT_MODE

Constructor Summary

protected

StreamCipherProvider(com.healthmarketscience.jackcess.impl.PageChannel channel, byte[] encodingKey)

Method Summary

boolean	canDecodeInline()
protected void	decodePageImpl(ByteBuffer inPage, ByteBuffer outPage, int pageNumber)
ByteBuffer	encodePageImpl(ByteBuffer buffer, int pageNumber, int pageOffset)
protected StreamCipherCompat	getStreamCipher()
protected StreamCipherCompat	initCipher()
protected void	reset()

Methods inherited from class com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler

bits2bytes, create, decodePage, encodePage, getDigest, getPhase, initCryptDigest, initDigest, initPwdDigest, int2bytes, iterateHash, verifyPassword

Methods inherited from class com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler

applyPageNumber, blockDecrypt, blockDecryptBytes, blockEncrypt, computeCipherParams, decryptBytes, decryptBytes, decryptInit, decryptInit, encryptInit, encryptInit, fill, fixToLength, fixToLength, getBlockCipher, getCipherParams, getEncodingKey, getEncodingKey, getTempBuffer, hash, hash, hash, hash, isBlankKey, processBytesFully, readHeaderPage, streamDecrypt, streamEncrypt, toString, wrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.healthmarketscience.jackcess.impl.CodecHandler

canEncodePartialPage

Constructor Detail

StreamCipherProvider

protected StreamCipherProvider(com.healthmarketscience.jackcess.impl.PageChannel channel,
                               byte[] encodingKey)

Method Detail

canDecodeInline

public boolean canDecodeInline()

getStreamCipher

protected StreamCipherCompat getStreamCipher()

Overrides:

getStreamCipher in class BaseCryptCodecHandler

initCipher

protected StreamCipherCompat initCipher()

decodePageImpl

protected void decodePageImpl(ByteBuffer inPage,
                              ByteBuffer outPage,
                              int pageNumber)

Specified by:

decodePageImpl in class OfficeCryptCodecHandler

encodePageImpl

public ByteBuffer encodePageImpl(ByteBuffer buffer,
                                 int pageNumber,
                                 int pageOffset)

Specified by:

encodePageImpl in class OfficeCryptCodecHandler

reset

protected void reset()

Overrides:

reset in class OfficeCryptCodecHandler