gnu.javax.crypto.mac
Class MacOutputStream
- AutoCloseable, Closeable, Flushable
A filtering output stream that computes a MAC (message authentication code)
over all data written to the stream.
IMac | getMac()- Returns the MAC this stream is updating.
|
void | on(boolean flag)- Turns the digesting state on or off.
|
void | setMac(IMac mac)- Sets the MAC this stream is updating, which must have already been
initialized.
|
void | write(byte[] buf, int off, int len)- This method calls the
write(int) method len
times for all bytes from the array buf starting at index
offset.
|
void | write(int b)- This method writes a single byte of output to the underlying
OutputStream.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
MacOutputStream
public MacOutputStream(OutputStream out,
IMac mac) Creates a new MacOutputStream. The stream is initially set
to digest data written, the mac argument must have already
been initialized, and the mac argument is not
cloned.
out - The underlying output stream.mac - The mac instance to use.
getMac
public IMac getMac()
Returns the MAC this stream is updating.
on
public void on(boolean flag)
Turns the digesting state on or off. When off, the MAC will not be updated
when data is written to the stream.
flag - The new digesting state.
setMac
public void setMac(IMac mac)
Sets the MAC this stream is updating, which must have already been
initialized. The argument is not cloned by this method.
mac - The non-null new MAC.
write
public void write(byte[] buf,
int off,
int len)
throws IOException This method calls the write(int) method len
times for all bytes from the array buf starting at index
offset. Subclasses should overwrite this method to get a
more efficient implementation.
- write in interface FilterOutputStream
buf - The byte array to write bytes fromlen - The number of bytes to write
write
public void write(int b)
throws IOException This method writes a single byte of output to the underlying
OutputStream.
- write in interface FilterOutputStream
b - The byte to write, passed as an int.
MacOutputStream.java --
Copyright (C) 2003, 2006 Free Software Foundation, Inc.
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