de.flexiprovider.pqc.ecc.niederreiter
Class NiederreiterPrivateKeySpec

java.lang.Object
  |
  +--de.flexiprovider.pqc.ecc.niederreiter.NiederreiterPrivateKeySpec

All Implemented Interfaces:

KeySpec, java.security.spec.KeySpec

public class NiederreiterPrivateKeySpec

extends java.lang.Object

implements KeySpec

This class provides a specification for a Niederreiter private key.

Author:

Elena Klintsevich

See Also:

NiederreiterPrivateKey, KeySpec

Constructor Summary

protected	NiederreiterPrivateKeySpec(int m, int k, byte[] encField, byte[] encGoppaPoly, byte[] encS, byte[] encP, byte[][] encQInv) Constructor, used by NiederreiterKeyFactory.
	NiederreiterPrivateKeySpec(int m, int k, GF2mField field, PolynomialGF2mSmallM gp, GF2Matrix sInv, Permutation p, PolynomialGF2mSmallM[] qInv) Constructor.

Method Summary

GF2mField	getField()
PolynomialGF2mSmallM	getGoppaPoly()
int	getK()
int	getM()
Permutation	getP()
PolynomialGF2mSmallM[]	getQInv()
GF2Matrix	getSInv()

Methods inherited from class java.lang.Object

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

Constructor Detail

NiederreiterPrivateKeySpec

public NiederreiterPrivateKeySpec(int m,
                                  int k,
                                  GF2mField field,
                                  PolynomialGF2mSmallM gp,
                                  GF2Matrix sInv,
                                  Permutation p,
                                  PolynomialGF2mSmallM[] qInv)

Constructor.

Parameters:

m - extension degree of the field

k - dimension of the code

field - finite field

gp - irreducible Goppa polynomial

sInv - random non-singular matrix S^-1

p - permutation vector P

qInv - matrix used to compute square roots in (GF(2^m))^t

NiederreiterPrivateKeySpec

protected NiederreiterPrivateKeySpec(int m,
                                     int k,
                                     byte[] encField,
                                     byte[] encGoppaPoly,
                                     byte[] encS,
                                     byte[] encP,
                                     byte[][] encQInv)

Constructor, used by NiederreiterKeyFactory.

Parameters:

m - extension degree of the field

k - dimension of the code

encField - encoded finite field

encGoppaPoly - encoded irreducible Goppa polynomial

encS - encoded k x k random binary non-singular matrix

encP - encoded permutation vector

encQInv - encoded matrix used to compute square roots in (GF(2^m))^t

Method Detail

getM

public int getM()

Returns:

the extension degree of the finite field

getK

public int getK()

Returns:

the dimension of the code

getField

public GF2mField getField()

Returns:

the finite field

getGoppaPoly

public PolynomialGF2mSmallM getGoppaPoly()

Returns:

the irreducible Goppa polynomial

getSInv

public GF2Matrix getSInv()

Returns:

the random non-singular matrix S^-1

getP

public Permutation getP()

Returns:

the permutation P

getQInv

public PolynomialGF2mSmallM[] getQInv()

Returns:

the matrix used to compute square roots in (GF(2^m))^t