de.flexiprovider.nf.iq.iqrdsa
Class IQRDSAPublicKey

java.lang.Object
  |
  +--de.flexiprovider.api.keys.PublicKey
        |
        +--de.flexiprovider.nf.iq.iqrdsa.IQRDSAPublicKey

All Implemented Interfaces:

java.security.Key, Key, java.security.PublicKey, java.io.Serializable

public class IQRDSAPublicKey

extends PublicKey

Class for public keys pertaining to the IQRDSA algorithm

Author:

Ralf-P. Weinmann

See Also:

PublicKey, Serialized Form

Fields inherited from interface java.security.Key

serialVersionUID

Fields inherited from interface java.security.PublicKey

serialVersionUID

Constructor Summary

protected	IQRDSAPublicKey(IQRDSAParameterSpec params, QuadraticIdeal gamma, QuadraticIdeal alpha) Construct an IQRDSA public key from the given parameters, public key value and base element of the NFDL-problem.
protected	IQRDSAPublicKey(IQRDSAPublicKeySpec keySpec) Construct an IQRDSA public key from the given key specification.

Method Summary

boolean	equals(java.lang.Object obj)
java.lang.String	getAlgorithm() Returns the standard algorithm name for this key.
protected codec.asn1.ASN1Type	getAlgParams()
QuadraticIdeal	getAlpha() Extract alpha parameter of key
QuadraticIdeal	getGamma() Extract alpha parameter of key
protected byte[]	getKeyData()
protected codec.asn1.ASN1ObjectIdentifier	getOID()
IQRDSAParameterSpec	getParams() Extract parameter set from key.
int	hashCode()
java.lang.String	toString()

Methods inherited from class de.flexiprovider.api.keys.PublicKey

getEncoded, getFormat

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IQRDSAPublicKey

protected IQRDSAPublicKey(IQRDSAParameterSpec params,
                          QuadraticIdeal gamma,
                          QuadraticIdeal alpha)

Construct an IQRDSA public key from the given parameters, public key value and base element of the NFDL-problem.

Parameters:

params - parameters consisting of gamma and prime modulus

alpha - the public key value

gamma - the base element of the NFDL-problem

IQRDSAPublicKey

protected IQRDSAPublicKey(IQRDSAPublicKeySpec keySpec)

Construct an IQRDSA public key from the given key specification.

Parameters:

keySpec - the key specification

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Returns the standard algorithm name for this key.

Returns:

the name of the algorithm associated with this key.

getGamma

public QuadraticIdeal getGamma()

Extract alpha parameter of key

Returns:

gamma

getAlpha

public QuadraticIdeal getAlpha()

Extract alpha parameter of key

Returns:

alpha

getParams

public IQRDSAParameterSpec getParams()

Extract parameter set from key.

Returns:

object of type IQDHParameterSpec specifying the domain parameters corresponding to key

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a human-readable form of the key

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

getAlgParams

protected codec.asn1.ASN1Type getAlgParams()

Overrides:

getAlgParams in class PublicKey

Following copied from class: de.flexiprovider.api.keys.PublicKey

Returns:

the algorithm parameters to encode in the SubjectPublicKeyInfo structure

getKeyData

protected byte[] getKeyData()

Overrides:

getKeyData in class PublicKey

Following copied from class: de.flexiprovider.api.keys.PublicKey

Returns:

the keyData to encode in the SubjectPublicKeyInfo structure

getOID

protected codec.asn1.ASN1ObjectIdentifier getOID()

Overrides:

getOID in class PublicKey

Following copied from class: de.flexiprovider.api.keys.PublicKey

Returns:

the OID to encode in the SubjectPublicKeyInfo structure