iaik.ixsil.algorithms

Class DigestAlgorithm

java.lang.Object

iaik.ixsil.algorithms.Algorithm

iaik.ixsil.algorithms.DigestAlgorithm

Direct Known Subclasses:

DigestAlgorithmImpl, DigestAlgorithmImplSHA1

public abstract class DigestAlgorithm
extends Algorithm

Defines the behaviour of a digest algorithm in addition to the standard algorithm's behaviour. A digest algorithm takes an octet stream as input data and computes a digest for it, corresponding to the actual digest algorithm specification.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.io.InputStream	input_ The input data for the digest algorithm.

Fields inherited from class iaik.ixsil.algorithms.Algorithm

uri_

Constructor Summary

Constructors

Constructor and Description
DigestAlgorithm()

Method Summary

Modifier and Type	Method and Description
abstract java.io.InputStream	digest() Computes the digest for the input data previously specified by means of method setInput(java.io.InputStream).
void	setInput(java.io.InputStream input) Sets the octet stream data to be processed by the digest algorithm.

Methods inherited from class iaik.ixsil.algorithms.Algorithm

getURI, setParameters, setURI, toElement

Methods inherited from class java.lang.Object

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

Field Detail

input_

protected java.io.InputStream input_

The input data for the digest algorithm.

Constructor Detail

DigestAlgorithm

public DigestAlgorithm()

Method Detail

digest

public abstract java.io.InputStream digest()
                                    throws AlgorithmException

Computes the digest for the input data previously specified by means of method setInput(java.io.InputStream).

Returns:

the digest bytes for the specified input. This value will NOT be base64 encoded.

Throws:

AlgorithmException - if computing the digest fails for any reason.

setInput

public void setInput(java.io.InputStream input)

Sets the octet stream data to be processed by the digest algorithm.

Parameters:

input - The data to be processed by the digest algorithm.