org.apache.poi.poifs.crypt.cryptoapi

Class CryptoAPIEncryptor.CryptoAPICipherOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.apache.poi.poifs.crypt.ChunkedCipherOutputStream

org.apache.poi.poifs.crypt.cryptoapi.CryptoAPIEncryptor.CryptoAPICipherOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

Enclosing class:

CryptoAPIEncryptor

protected class CryptoAPIEncryptor.CryptoAPICipherOutputStream
extends ChunkedCipherOutputStream

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Method Summary

Modifier and Type	Method and Description
protected void	calculateChecksum(java.io.File file, int i)
protected void	createEncryptionInfoEntry(DirectoryNode dir, java.io.File tmpFile)
void	flush()
protected javax.crypto.Cipher	initCipherForBlock(javax.crypto.Cipher cipher, int block, boolean lastChunk)
protected javax.crypto.Cipher	initCipherForBlockNoFlush(javax.crypto.Cipher existing, int block, boolean lastChunk)

Methods inherited from class org.apache.poi.poifs.crypt.ChunkedCipherOutputStream

close, getChunk, getChunkMask, getPlainByteFlags, getPos, getTotalPos, initCipherForBlock, invokeCipher, setNextRecordSize, write, write, write, write, writeChunk, writePlain

Methods inherited from class java.lang.Object

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

Method Detail

initCipherForBlock

protected javax.crypto.Cipher initCipherForBlock(javax.crypto.Cipher cipher,
                                                 int block,
                                                 boolean lastChunk)
                                          throws java.io.IOException,
                                                 java.security.GeneralSecurityException

Specified by:

initCipherForBlock in class ChunkedCipherOutputStream (类 ChunkedCipherOutputStream 中的 initCipherForBlock)

Throws:

java.io.IOException (java.io.IOException)

java.security.GeneralSecurityException (java.security.GeneralSecurityException)

initCipherForBlockNoFlush

protected javax.crypto.Cipher initCipherForBlockNoFlush(javax.crypto.Cipher existing,
                                                        int block,
                                                        boolean lastChunk)
                                                 throws java.security.GeneralSecurityException

Overrides:

initCipherForBlockNoFlush in class ChunkedCipherOutputStream

Throws:

java.security.GeneralSecurityException (java.security.GeneralSecurityException)

calculateChecksum

protected void calculateChecksum(java.io.File file,
                                 int i)

Specified by:

calculateChecksum in class ChunkedCipherOutputStream (类 ChunkedCipherOutputStream 中的 calculateChecksum)

createEncryptionInfoEntry

protected void createEncryptionInfoEntry(DirectoryNode dir,
                                         java.io.File tmpFile)

Specified by:

createEncryptionInfoEntry in class ChunkedCipherOutputStream (类 ChunkedCipherOutputStream 中的 createEncryptionInfoEntry)

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable (在接口 java.io.Flushable 中刷新)

Overrides:

flush in class java.io.FilterOutputStream

Throws:

java.io.IOException (java.io.IOException)