Package org.bouncycastle.pqc.legacy.crypto.mceliece

Class McElieceParameters

java.lang.Object

org.bouncycastle.pqc.legacy.crypto.mceliece.McElieceParameters

All Implemented Interfaces:

CipherParameters

Direct Known Subclasses:

McElieceCCA2Parameters

public class McElieceParameters
extends Object
implements CipherParameters

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
McElieceParameters()	Constructor.
McElieceParameters(int keysize)	Constructor.
McElieceParameters(int m, int t)	Constructor.
McElieceParameters(int m, int t, int poly)	Constructor.
McElieceParameters(int m, int t, int poly, Digest digest)	Constructor.
McElieceParameters(int m, int t, Digest digest)	Constructor.
McElieceParameters(int keysize, Digest digest)	Constructor.
McElieceParameters(Digest digest)

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

McElieceParameters

public McElieceParameters()

Constructor. Set the default parameters: extension degree.

McElieceParameters

public McElieceParameters(Digest digest)

McElieceParameters

public McElieceParameters(int keysize)

Constructor.

Parameters:

keysize - the length of a Goppa code

Throws:

IllegalArgumentException - if keysize < 1.

McElieceParameters

public McElieceParameters(int keysize,
 Digest digest)

Constructor.

Parameters:

keysize - the length of a Goppa code

digest - CCA2 mode digest

Throws:

IllegalArgumentException - if keysize < 1.

McElieceParameters

public McElieceParameters(int m,
 int t)

Constructor.

Parameters:

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

t - error correction capability of the code

Throws:

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

McElieceParameters

public McElieceParameters(int m,
 int t,
 Digest digest)

Constructor.

Parameters:

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

t - error correction capability of the code

Throws:

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

McElieceParameters

public McElieceParameters(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.

McElieceParameters

public McElieceParameters(int m,
 int t,
 int poly,
 Digest digest)

Constructor.

Parameters:

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

t - error correction capability of the code

poly - the field polynomial

digest - CCA2 mode digest

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