Top Description Fields Constructors Methods
org.apache.poi.poifs.crypt.cryptoapi

pack-priv Class CryptoAPIDocumentOutputStream

extends ByteArrayOutputStream
Class Inheritance
Annotations
@Internal
Imports
java.io.IOException, .InputStream, .UncheckedIOException, java.security.GeneralSecurityException, javax.crypto.Cipher, org.apache.commons.io.input.BoundedInputStream, org.apache.commons.io.output.ByteArrayOutputStream, org.apache.poi.EncryptedDocumentException, org.apache.poi.util.Internal
An OutputStream for the document entries within the encrypted stream

Field Summary

Modifier and TypeField and Description
private final Cipher
cipher

private final CryptoAPIEncryptor
encryptor

private final byte[]
oneByte

Constructor Summary

AccessConstructor and Description
public
CryptoAPIDocumentOutputStream(CryptoAPIEncryptor encryptor)

Method Summary

Modifier and TypeMethod and Description
public void
setBlock(int block)

public void
setSize(int count)

public InputStream

Returns:

the encrypted data
toInputStream(long maxSize)

Returns the encrypted data.

public synchronized void
write(int
the byte.
b)

Overrides org.apache.commons.io.output.ByteArrayOutputStream.write.

Writes the specified byte to this output stream.

public synchronized void
write(byte[]
the data.
b, int
the start offset in the data.
off, int
the number of bytes to write.
len)

Overrides org.apache.commons.io.output.ByteArrayOutputStream.write.

Writes len bytes from the specified byte array starting at offset off to this output stream.

Inherited from org.apache.commons.io.output.ByteArrayOutputStream:
resetsizetoBufferedInputStreamtoBufferedInputStreamtoByteArraytoInputStreamwritewriteTo

Field Detail

cipherback to summary
private final Cipher cipher
encryptorback to summary
private final CryptoAPIEncryptor encryptor
oneByteback to summary
private final byte[] oneByte

Constructor Detail

CryptoAPIDocumentOutputStreamback to summary
public CryptoAPIDocumentOutputStream(CryptoAPIEncryptor encryptor) throws GeneralSecurityException

Method Detail

setBlockback to summary
public void setBlock(int block) throws GeneralSecurityException
setSizeback to summary
public void setSize(int count)
toInputStreamback to summary
public InputStream toInputStream(long maxSize)

Returns the encrypted data.

Returns:InputStream

the encrypted data

Exceptions
UncheckedIOException:
if an I/O error occurs
writeback to summary
public synchronized void write(int b)

Overrides org.apache.commons.io.output.ByteArrayOutputStream.write.

Doc from java.io.OutputStream.write.

Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Parameters
b:int

the byte.

Annotations
@Override
writeback to summary
public synchronized void write(byte[] b, int off, int len)

Overrides org.apache.commons.io.output.ByteArrayOutputStream.write.

Doc from java.io.OutputStream.write.

Writes len bytes from the specified byte array starting at offset off to this output stream. The general contract for write(b, off, len) is that some of the bytes in the array b are written to the output stream in order; element b[off] is the first byte written and b[off+len-1] is the last byte written by this operation.

If b is null, a NullPointerException is thrown.

If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown.

Parameters
b:byte[]

the data.

off:int

the start offset in the data.

len:int

the number of bytes to write.

Annotations
@Override