gnu.javax.crypto.assembly
Class Assembly
An
Assembly is a construction consisting of a chain of
Transformer elements; each wired in pre- or post- transformation
mode. This chain is terminated by one
LoopbackTransformer
element.
Once constructed, and correctly initialised, the bulk of the methods
available on the
Assembly are delegated to the
head of
the
Transformer chain of the
Assembly.
Assembly()- Trivial constructor that sets the chain to a
LoopbackTransformer.
|
void | addPostTransformer(Transformer t)- Adds the designated
Transformer and signals that it should operate
in post-processing mode; i.e. it should apply its internal transformation
algorithm on the input data stream, after it passes that stream to
the next element in the chain.
|
void | addPreTransformer(Transformer t)- Adds the designated
Transformer and signals that it should operate
in pre-processing mode; i.e. it should apply its internal transformation
algorithm on the input data stream, before it passes that stream to
the next element in the chain.
|
void | init(Map<K,V> attributes)- Initialises the
Assembly for operation with specific
characteristics.
|
byte[] | lastUpdate()- Convenience method that calls the method with same name and three arguments
using a 0-long byte array.
|
byte[] | lastUpdate(byte b)- Convenience method that calls the method with same name and three
arguments, using a byte array of length
1 whose contents are
the designated byte.
|
byte[] | lastUpdate(byte[] in)- Convenience method that calls the method with same name and three
arguments.
|
byte[] | lastUpdate(byte[] in, int offset, int length)- Processes a designated number of bytes from a given byte array and signals,
at the same time, that this is the last push operation for this
Assembly.
|
void | reset()- Resets the
Assembly for re-initialisation and use with other
characteristics.
|
byte[] | update(byte b)- Convenience method that calls the method with same name and three
arguments, using a byte array of length
1 whose contents are
the designated byte.
|
byte[] | update(byte[] in)- Convenience method that calls the method with same name and three
arguments.
|
byte[] | update(byte[] in, int offset, int length)- Processes a designated number of bytes from a given byte array.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
DIRECTION
public static final String DIRECTION
- "gnu.crypto.assembly.assembly.direction"
Assembly
public Assembly()
Trivial constructor that sets the chain to a
LoopbackTransformer.
addPostTransformer
public void addPostTransformer(Transformer t)
Adds the designated
Transformer and signals that it should operate
in post-processing mode; i.e. it should apply its internal transformation
algorithm on the input data stream,
after it passes that stream to
the next element in the
chain.
t - the Transformer to add at the head of the current chain.
addPreTransformer
public void addPreTransformer(Transformer t)
Adds the designated
Transformer and signals that it should operate
in pre-processing mode; i.e. it should apply its internal transformation
algorithm on the input data stream,
before it passes that stream to
the next element in the
chain.
t - the Transformer to add at the head of the current chain.
init
public void init(Map<K,V> attributes)
throws TransformerException Initialises the Assembly for operation with specific
characteristics.
attributes - a set of name-value pairs that describes the desired
future behaviour of this instance.
lastUpdate
public byte[] lastUpdate()
throws TransformerException Convenience method that calls the method with same name and three arguments
using a 0-long byte array.
- the result of transformation.
lastUpdate
public byte[] lastUpdate(byte b)
throws TransformerException Convenience method that calls the method with same name and three
arguments, using a byte array of length 1 whose contents are
the designated byte.
- the result of transformation.
lastUpdate
public byte[] lastUpdate(byte[] in)
throws TransformerException Convenience method that calls the method with same name and three
arguments. All bytes in in, starting from index position
0 are considered.
in - the input data bytes.
- the result of transformation.
lastUpdate
public byte[] lastUpdate(byte[] in,
int offset,
int length)
throws TransformerException Processes a designated number of bytes from a given byte array and signals,
at the same time, that this is the last push operation for this
Assembly.
in - the input data bytes.offset - index of in from which to start considering
data.length - the count of bytes to process.
- the result of transformation.
reset
public void reset()
Resets the Assembly for re-initialisation and use with other
characteristics. This method always succeeds.
update
public byte[] update(byte b)
throws TransformerException Convenience method that calls the method with same name and three
arguments, using a byte array of length 1 whose contents are
the designated byte.
- the result of transformation.
update
public byte[] update(byte[] in)
throws TransformerException Convenience method that calls the method with same name and three
arguments. All bytes in in, starting from index position
0 are considered.
in - the input data bytes.
- the result of transformation.
update
public byte[] update(byte[] in,
int offset,
int length)
throws TransformerException Processes a designated number of bytes from a given byte array.
in - the input data bytes.offset - index of in from which to start considering
data.length - the count of bytes to process.
- the result of transformation.
Assembly.java --
Copyright (C) 2003, 2006 Free Software Foundation, Inc.
This file is a part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
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WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
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combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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independent module, the terms and conditions of the license of that
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