Package javax.crypto.spec

Class OAEPParameterSpec

java.lang.Object

javax.crypto.spec.OAEPParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class OAEPParameterSpec
extends Object
implements AlgorithmParameterSpec

The algorithm parameter specification for the OAEP Padding algorithm.

This padding algorithm is defined in the PKCS #1 standard.

Field Summary

Fields

Modifier and Type	Field	Description
static OAEPParameterSpec	DEFAULT	The algorithm parameter instance with default values.

Constructor Summary

Constructors

Constructor	Description
OAEPParameterSpec(String mdName, String mgfName, AlgorithmParameterSpec mgfSpec, PSource pSrc)	Creates a new OAEPParameterSpec instance with the specified message digest algorithm name, mask generation function (mgf) algorithm name, parameters for the mgf algorithm and the source of the label L.

Method Summary

Modifier and Type	Method	Description
String	getDigestAlgorithm()	Returns the algorithm name of the message digest.
String	getMGFAlgorithm()	Returns the algorithm name of the mask generation function.
AlgorithmParameterSpec	getMGFParameters()	Returns the algorithm parameter specification for the mask generation function algorithm.
PSource	getPSource()	Returns the source of the label L.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT

public static final OAEPParameterSpec DEFAULT

The algorithm parameter instance with default values.

It uses the following parameters:

• message digest : "SHA-1"
• mask generation function (mgf) : "MGF1"
• parameters for the mgf : "SHA-1" MGF1ParameterSpec.SHA1
• the source of the label L: PSource.PSpecified.DEFAULT

Constructor Details

OAEPParameterSpec

public OAEPParameterSpec(String mdName,
String mgfName,
AlgorithmParameterSpec mgfSpec,
PSource pSrc)

Creates a new OAEPParameterSpec instance with the specified message digest algorithm name, mask generation function (mgf) algorithm name, parameters for the mgf algorithm and the source of the label L.

Parameters:

mdName - the message digest algorithm name.

mgfName - the mask generation function algorithm name.

mgfSpec - the algorithm parameter specification for the mask generation function algorithm.

pSrc - the source of the label L.

Throws:

NullPointerException - if one of mdName, mgfName or pSrc is null.

Method Details

getDigestAlgorithm

public String getDigestAlgorithm()

Returns the algorithm name of the message digest.

Returns:

the algorithm name of the message digest.

getMGFAlgorithm

public String getMGFAlgorithm()

Returns the algorithm name of the mask generation function.

Returns:

the algorithm name of the mask generation function.

getMGFParameters

public AlgorithmParameterSpec getMGFParameters()

Returns the algorithm parameter specification for the mask generation function algorithm.

Returns:

the algorithm parameter specification for the mask generation function algorithm.

getPSource

public PSource getPSource()

Returns the source of the label L.

Returns:

the source of the label L.