Package org.docx4j.org.apache.poi.poifs.crypt

Class ChunkedCipherOutputStream

java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
org.docx4j.org.apache.poi.poifs.crypt.ChunkedCipherOutputStream
All Implemented Interfaces:
java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable
Direct Known Subclasses:
BinaryRC4Encryptor.BinaryRC4CipherOutputStream
@Internal
public abstract class ChunkedCipherOutputStream
extends java.io.FilterOutputStream

  • Field Summary

    Fields
    Modifier and Type Field Description
    protected int chunkBits  
    protected int chunkMask  
    protected int chunkSize  

    Fields inherited from class java.io.FilterOutputStream

    out

  • Constructor Summary

    Constructors
    Constructor Description
    ChunkedCipherOutputStream​(DirectoryNode dir, int chunkSize)  

  • Method Summary

    Modifier and Type Method Description
    protected abstract void calculateChecksum​(java.io.File fileOut, int oleStreamSize)  
    void close()  
    protected abstract void createEncryptionInfoEntry​(DirectoryNode dir, java.io.File tmpFile)  
    protected abstract javax.crypto.Cipher initCipherForBlock​(javax.crypto.Cipher existing, int block, boolean lastChunk)  
    void write​(byte[] b)  
    void write​(byte[] b, int off, int len)  
    void write​(int b)  
    protected void writeChunk()  

    Methods inherited from class java.io.FilterOutputStream

    flush

    Methods inherited from class java.io.OutputStream

    nullOutputStream

    Methods inherited from class java.lang.Object

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

  • Field Details

    • chunkSize

      protected final int chunkSize

    • chunkMask

      protected final int chunkMask

    • chunkBits

      protected final int chunkBits

  • Constructor Details

    • ChunkedCipherOutputStream

      public ChunkedCipherOutputStream​(DirectoryNode dir, int chunkSize) throws java.io.IOException, java.security.GeneralSecurityException
      Throws:
      java.io.IOException
      java.security.GeneralSecurityException

  • Method Details

    • initCipherForBlock

      protected abstract javax.crypto.Cipher initCipherForBlock​(javax.crypto.Cipher existing, int block, boolean lastChunk) throws java.security.GeneralSecurityException
      Throws:
      java.security.GeneralSecurityException

    • calculateChecksum

      protected abstract void calculateChecksum​(java.io.File fileOut, int oleStreamSize) throws java.security.GeneralSecurityException, java.io.IOException
      Throws:
      java.security.GeneralSecurityException
      java.io.IOException

    • createEncryptionInfoEntry

      protected abstract void createEncryptionInfoEntry​(DirectoryNode dir, java.io.File tmpFile) throws java.io.IOException, java.security.GeneralSecurityException
      Throws:
      java.io.IOException
      java.security.GeneralSecurityException

    • write

      public void write​(int b) throws java.io.IOException
      Overrides:
      write in class java.io.FilterOutputStream
      Throws:
      java.io.IOException

    • write

      public void write​(byte[] b) throws java.io.IOException
      Overrides:
      write in class java.io.FilterOutputStream
      Throws:
      java.io.IOException

    • write

      public void write​(byte[] b, int off, int len) throws java.io.IOException
      Overrides:
      write in class java.io.FilterOutputStream
      Throws:
      java.io.IOException

    • writeChunk

      protected void writeChunk() throws java.io.IOException, java.security.GeneralSecurityException
      Throws:
      java.io.IOException
      java.security.GeneralSecurityException

    • close

      public void close() throws java.io.IOException
      Specified by:
      close in interface java.lang.AutoCloseable
      Specified by:
      close in interface java.io.Closeable
      Overrides:
      close in class java.io.FilterOutputStream
      Throws:
      java.io.IOException