de.flexiprovider.pqc.ecc.mceliece
Class McEliecePrivateKeySpec

java.lang.Object
  |
  +--de.flexiprovider.pqc.ecc.mceliece.McEliecePrivateKeySpec

All Implemented Interfaces:

KeySpec, java.security.spec.KeySpec

public class McEliecePrivateKeySpec

extends java.lang.Object

implements KeySpec

This class provides a specification for a McEliece private key.

Author:

Elena Klintsevich

See Also:

McEliecePrivateKey, KeySpec

Constructor Summary

protected	McEliecePrivateKeySpec(int n, int k, byte[] encField, byte[] encGoppaPoly, byte[] encSInv, byte[] encP1, byte[] encP2, byte[] encH, byte[][] encQInv) Constructor (used by the McElieceKeyFactory).
	McEliecePrivateKeySpec(int n, int k, GF2mField field, PolynomialGF2mSmallM goppaPoly, GF2Matrix sInv, Permutation p1, Permutation p2, GF2Matrix h, PolynomialGF2mSmallM[] qInv) Constructor.

Method Summary

GF2mField	getField()
PolynomialGF2mSmallM	getGoppaPoly()
GF2Matrix	getH()
int	getK()
int	getN()
Permutation	getP1()
Permutation	getP2()
PolynomialGF2mSmallM[]	getQInv()
GF2Matrix	getSInv()

Methods inherited from class java.lang.Object

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

Constructor Detail

McEliecePrivateKeySpec

public McEliecePrivateKeySpec(int n,
                              int k,
                              GF2mField field,
                              PolynomialGF2mSmallM goppaPoly,
                              GF2Matrix sInv,
                              Permutation p1,
                              Permutation p2,
                              GF2Matrix h,
                              PolynomialGF2mSmallM[] qInv)

Constructor.

Parameters:

n - the length of the code

k - the dimension of the code

field - the field polynomial defining the finite field GF(2^m)

goppaPoly - the irreducible Goppa polynomial

sInv - the matrix S^-1

p1 - the permutation used to generate the systematic check matrix

p2 - the permutation used to compute the public generator matrix

h - the canonical check matrix

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

McEliecePrivateKeySpec

protected McEliecePrivateKeySpec(int n,
                                 int k,
                                 byte[] encField,
                                 byte[] encGoppaPoly,
                                 byte[] encSInv,
                                 byte[] encP1,
                                 byte[] encP2,
                                 byte[] encH,
                                 byte[][] encQInv)

Constructor (used by the McElieceKeyFactory).

Parameters:

n - the length of the code

k - the dimension of the code

encField - the encoded field polynomial defining the finite field GF(2^m)

encGoppaPoly - the encoded irreducible Goppa polynomial

encSInv - the encoded matrix S^-1

encP1 - the encoded permutation used to generate the systematic check matrix

encP2 - the encoded permutation used to compute the public generator matrix

encH - the encoded canonical check matrix

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

Method Detail

getN

public int getN()

Returns:

the length of the code

getK

public int getK()

Returns:

the dimension of the code

getField

public GF2mField getField()

Returns:

the finite field GF(2^m)

getGoppaPoly

public PolynomialGF2mSmallM getGoppaPoly()

Returns:

the irreducible Goppa polynomial

getSInv

public GF2Matrix getSInv()

Returns:

the k x k random binary non-singular matrix S^-1

getP1

public Permutation getP1()

Returns:

the permutation used to generate the systematic check matrix

getP2

public Permutation getP2()

Returns:

the permutation used to compute the public generator matrix

getH

public GF2Matrix getH()

Returns:

the canonical check matrix H

getQInv

public PolynomialGF2mSmallM[] getQInv()

Returns:

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