de.flexiprovider.pqc.ecc
Class ECCKeyGenParameterSpec

java.lang.Object
  |
  +--de.flexiprovider.pqc.ecc.ECCKeyGenParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec, java.security.spec.AlgorithmParameterSpec

public class ECCKeyGenParameterSpec

extends java.lang.Object

implements AlgorithmParameterSpec

This class provides a specification for the parameters that are used by the McEliece, McElieceCCA2, and Niederreiter key pair generators.

Author:

Elena Klintsevich, Martin Döring

See Also:

McElieceKeyPairGenerator, McElieceCCA2KeyPairGenerator, NiederreiterKeyPairGenerator

Field Summary

static int	DEFAULT_M The default extension degree
static int	DEFAULT_T The default error correcting capability.

Constructor Summary

ECCKeyGenParameterSpec()
Constructor.

ECCKeyGenParameterSpec(int keysize)
Constructor.

ECCKeyGenParameterSpec(int m, int t)
Constructor.

ECCKeyGenParameterSpec(int m, int t, int poly)
Constructor.

Method Summary

int	getFieldPoly()
int	getM()
int	getN()
int	getT()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_M

public static final int DEFAULT_M

The default extension degree

DEFAULT_T

public static final int DEFAULT_T

The default error correcting capability.

Constructor Detail

ECCKeyGenParameterSpec

public ECCKeyGenParameterSpec()

Constructor. Set the default parameters: extension degree.

ECCKeyGenParameterSpec

public ECCKeyGenParameterSpec(int keysize)
                       throws InvalidParameterException

Constructor.

Parameters:

keysize - the length of a Goppa code

Throws:

InvalidParameterException - if keysize < 1.

ECCKeyGenParameterSpec

public ECCKeyGenParameterSpec(int m,
                              int t)
                       throws InvalidParameterException

Constructor.

Parameters:

m - degree of the finite field GF(2^m)

t - error correction capability of the code

Throws:

InvalidParameterException - if m < 1 or m > 32 or t < 0 or t > n.

ECCKeyGenParameterSpec

public ECCKeyGenParameterSpec(int m,
                              int t,
                              int poly)
                       throws InvalidParameterException

Constructor.

Parameters:

m - degree of the finite field GF(2^m)

t - error correction capability of the code

poly - the field polynomial

Throws:

InvalidParameterException - if m < 1 or m > 32 or t < 0 or t > n or poly is not an irreducible field polynomial.

Method Detail

getM

public int getM()

Returns:

the extension degree of the finite field GF(2^m)

getN

public int getN()

Returns:

the length of the code

getT

public int getT()

Returns:

the error correction capability of the code

getFieldPoly

public int getFieldPoly()

Returns:

the field polynomial