Package org.bouncycastle.pqc.jcajce.spec

Class McElieceKeyGenParameterSpec

java.lang.Object

org.bouncycastle.pqc.jcajce.spec.McElieceKeyGenParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class McElieceKeyGenParameterSpec
extends Object
implements AlgorithmParameterSpec

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

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_M	The default extension degree
static final int	DEFAULT_T	The default error correcting capability.

Constructor Summary

Constructors

Constructor	Description
McElieceKeyGenParameterSpec()	Constructor.
McElieceKeyGenParameterSpec(int keysize)	Constructor.
McElieceKeyGenParameterSpec(int m, int t)	Constructor.
McElieceKeyGenParameterSpec(int m, int t, int poly)	Constructor.

Method Summary

Modifier and Type	Method	Description
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 Details

DEFAULT_M

public static final int DEFAULT_M

The default extension degree

See Also:

• Constant Field Values

DEFAULT_T

public static final int DEFAULT_T

The default error correcting capability.

See Also:

• Constant Field Values

Constructor Details

McElieceKeyGenParameterSpec

public McElieceKeyGenParameterSpec()

Constructor. Set the default parameters: extension degree.

McElieceKeyGenParameterSpec

public McElieceKeyGenParameterSpec(int keysize)

Constructor.

Parameters:

keysize - the length of a Goppa code

Throws:

IllegalArgumentException - if keysize < 1.

McElieceKeyGenParameterSpec

public McElieceKeyGenParameterSpec(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.

McElieceKeyGenParameterSpec

public McElieceKeyGenParameterSpec(int m,
 int t,
 int poly)

Constructor.

Parameters:

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

t - error correction capability of the code

poly - the field polynomial

Throws:

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

Method Details

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