Package com.yubico.yubikit.core.util

Class ZeroingByteArrayOutputStream

java.lang.Object

java.io.OutputStream

com.yubico.yubikit.core.util.ZeroingByteArrayOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public final class ZeroingByteArrayOutputStream
extends OutputStream

A ByteArrayOutputStream replacement that zeros its internal buffer on close() and reset().

Constructor Summary

Constructors

Constructor	Description
ZeroingByteArrayOutputStream()	Creates a new instance with the default initial capacity of 32 bytes.
ZeroingByteArrayOutputStream(int initialCapacity)	Creates a new instance with the specified initial capacity.

Method Summary

Modifier and Type	Method	Description
void	close()	Zeros the internal buffer.
void	reset()	Zeros the internal buffer contents and resets the position to 0.
int	size()	Returns the current number of bytes written.
byte[]	toByteArray()	Returns a copy of the data written so far.
void	write(byte[] b, int off, int len)
void	write(int b)
void	writeTo(OutputStream out)	Writes the contents to another stream.

Methods inherited from class java.io.OutputStream

flush, nullOutputStream, write

Methods inherited from class java.lang.Object

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

Constructor Details

ZeroingByteArrayOutputStream

public ZeroingByteArrayOutputStream()

Creates a new instance with the default initial capacity of 32 bytes.

ZeroingByteArrayOutputStream

public ZeroingByteArrayOutputStream(int initialCapacity)

Creates a new instance with the specified initial capacity.

Method Details

write

public void write(int b)

Specified by:

write in class OutputStream

write

public void write(byte[] b,
 int off,
 int len)

Overrides:

write in class OutputStream

toByteArray

public byte[] toByteArray()

Returns a copy of the data written so far.

size

public int size()

Returns the current number of bytes written.

reset

public void reset()

Zeros the internal buffer contents and resets the position to 0.

close

public void close()

Zeros the internal buffer. Idempotent.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

writeTo

public void writeTo(OutputStream out)
             throws IOException

Writes the contents to another stream.

Throws:

IOException