Package com.lowagie.text.pdf
Class OutputStreamEncryption
java.lang.Object
java.io.OutputStream
com.lowagie.text.pdf.OutputStreamEncryption
- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate boolean
private static final int
private static final int
protected ARCFOUREncryption
protected AESCipher
private boolean
protected OutputStream
private byte[]
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Constructor Summary
ConstructorsConstructorDescriptionOutputStreamEncryption
(OutputStream out, byte[] key, int revision) OutputStreamEncryption
(OutputStream out, byte[] key, int off, int len, int revision) Creates a new instance of OutputStreamCounter -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Closes this output stream and releases any system resources associated with this stream.void
finish()
void
flush()
Flushes this output stream and forces any buffered output bytes to be written out.void
write
(byte[] b) Writesb.length
bytes from the specified byte array to this output stream.void
write
(byte[] b, int off, int len) Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream.void
write
(int b) Writes the specified byte to this output stream.Methods inherited from class java.io.OutputStream
nullOutputStream
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Field Details
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AES_128
private static final int AES_128- See Also:
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AES_256_V3
private static final int AES_256_V3- See Also:
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out
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arcfour
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cipher
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sb
private byte[] sb -
aes
private boolean aes -
finished
private boolean finished
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Constructor Details
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OutputStreamEncryption
Creates a new instance of OutputStreamCounter- Parameters:
out
- output streamkey
- bytes for keyoff
- offsetlen
- lengthrevision
- revision number
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OutputStreamEncryption
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Method Details
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close
Closes this output stream and releases any system resources associated with this stream. The general contract ofclose
is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.The
close
method ofOutputStream
does nothing.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classOutputStream
- Throws:
IOException
- if an I/O error occurs.
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flush
Flushes this output stream and forces any buffered output bytes to be written out. The general contract offlush
is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.The
flush
method ofOutputStream
does nothing.- Specified by:
flush
in interfaceFlushable
- Overrides:
flush
in classOutputStream
- Throws:
IOException
- if an I/O error occurs.
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write
Writesb.length
bytes from the specified byte array to this output stream. The general contract forwrite(b)
is that it should have exactly the same effect as the callwrite(b, 0, b.length)
.- Overrides:
write
in classOutputStream
- Parameters:
b
- the data.- Throws:
IOException
- if an I/O error occurs.- See Also:
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write
Writes the specified byte to this output stream. The general contract forwrite
is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argumentb
. The 24 high-order bits ofb
are ignored.Subclasses of
OutputStream
must provide an implementation for this method.- Specified by:
write
in classOutputStream
- Parameters:
b
- thebyte
.- Throws:
IOException
- if an I/O error occurs. In particular, anIOException
may be thrown if the output stream has been closed.
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write
Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream. The general contract forwrite(b, off, len)
is that some of the bytes in the arrayb
are written to the output stream in order; elementb[off]
is the first byte written andb[off+len-1]
is the last byte written by this operation.The
write
method ofOutputStream
calls the write method of one argument on each of the bytes to be written out. Subclasses are encouraged to override this method and provide a more efficient implementation.If
b
isnull
, aNullPointerException
is thrown.If
off
is negative, orlen
is negative, oroff+len
is greater than the length of the arrayb
, then anIndexOutOfBoundsException
is thrown.- Overrides:
write
in classOutputStream
- Parameters:
b
- the data.off
- the start offset in the data.len
- the number of bytes to write.- Throws:
IOException
- if an I/O error occurs. In particular, anIOException
is thrown if the output stream is closed.
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finish
- Throws:
IOException
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