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## 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

Enclosing class:
  CryptoAPIEncryptor

    protected class CryptoAPIEncryptor.CryptoAPICipherOutputStream

extends ChunkedCipherOutputStream

Field Summary

Fields inherited from class java.io.FilterOutputStream
`out`

Constructor Summary
`CryptoAPIEncryptor.CryptoAPICipherOutputStream(java.io.OutputStream stream)`

Method Summary
`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)`

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`

Constructor Detail

### CryptoAPIEncryptor.CryptoAPICipherOutputStream

    public CryptoAPIEncryptor.CryptoAPICipherOutputStream(java.io.OutputStream stream)
                                                   throws java.io.IOException,
                                                          java.security.GeneralSecurityException

Throws:
  `java.io.IOException`
  `java.security.GeneralSecurityException`

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`
  Throws:
    `java.io.IOException`
    `java.security.GeneralSecurityException`

### calculateChecksum

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

  Specified by:
    `calculateChecksum` in class `ChunkedCipherOutputStream`

### createEncryptionInfoEntry

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

  Specified by:
    `createEncryptionInfoEntry` in class `ChunkedCipherOutputStream`
  Throws:
    `java.io.IOException`
    `java.security.GeneralSecurityException`

### flush

    public void flush()
               throws java.io.IOException

  Specified by:
    `flush` in interface `java.io.Flushable`
  Overrides:
    `flush` in class `java.io.FilterOutputStream`
  Throws:
    `java.io.IOException`

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Copyright 2017 The Apache Software Foundation or its licensors, as applicable.