opencard.opt.security
Class DSAPublicKey

java.lang.Object
  opencard.opt.security.DSAPublicKey

All Implemented Interfaces:

java.io.Serializable, java.security.interfaces.DSAKey, java.security.interfaces.DSAPublicKey, java.security.Key, java.security.PublicKey

public class DSAPublicKey
extends java.lang.Object
implements java.security.interfaces.DSAPublicKey

Contains a public DSA key. Implements the java.security.interfaces.DSAPublicKey interface In this package OpenCard provides key classes for common algorithms like RSA, DSA (or DES) that each concrete card service implementing a card service interface should support instead of defining its own key classes. Only for new PKA algorithms that OpenCard does not yet support a card service may define its own key classes.

Version:

$Id: DSAPublicKey.java,v 1.1.1.1 1999/10/05 15:08:48 damke Exp $

Author:

Peter Bendel (peter_bendel@de.ibm.com)

See Also:

DSAPublicKey, Serialized Form

Field Summary

Fields inherited from interface java.security.interfaces.DSAPublicKey

serialVersionUID

Constructor Summary

DSAPublicKey(java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g, java.math.BigInteger y)
Produce a DSAPublicKey from the given BigIntegers.

Method Summary

java.lang.String	getAlgorithm() Conformance to the java.security interface
byte[]	getEncoded() Conformance to the java.security interface
java.lang.String	getFormat() Conformance to the java.security interface
java.security.interfaces.DSAParams	getParams() Returns the DSA-specific key parameters.
java.math.BigInteger	getY() Returns the value of the public key, y.

Methods inherited from class java.lang.Object

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

Constructor Detail

DSAPublicKey

public DSAPublicKey(java.math.BigInteger p,
                    java.math.BigInteger q,
                    java.math.BigInteger g,
                    java.math.BigInteger y)

Produce a DSAPublicKey from the given BigIntegers.

Parameters:

q - subprime

p - prime

g - base

y - public key

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Conformance to the java.security interface

Specified by:

getAlgorithm in interface java.security.Key

See Also:

PublicKey

getEncoded

public byte[] getEncoded()

Conformance to the java.security interface

Specified by:

getEncoded in interface java.security.Key

See Also:

PublicKey

getFormat

public java.lang.String getFormat()

Conformance to the java.security interface

Specified by:

getFormat in interface java.security.Key

See Also:

PublicKey

getParams

public java.security.interfaces.DSAParams getParams()

Returns the DSA-specific key parameters. These parameters are never secret.

Specified by:

getParams in interface java.security.interfaces.DSAKey

Returns:

the DSA-specific key parameters.

See Also:

DSAParams

getY

public java.math.BigInteger getY()

Returns the value of the public key, y.

Specified by:

getY in interface java.security.interfaces.DSAPublicKey

Returns:

the value of the public key, y.