org.bouncycastle.pqc.jcajce.spec

Class McElieceCCA2KeyGenParameterSpec

java.lang.Object

org.bouncycastle.pqc.jcajce.spec.McElieceCCA2KeyGenParameterSpec

All Implemented Interfaces:

java.security.spec.AlgorithmParameterSpec

public class McElieceCCA2KeyGenParameterSpec
extends java.lang.Object
implements java.security.spec.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 and Description
static int	DEFAULT_M The default extension degree
static int	DEFAULT_T The default error correcting capability.
static java.lang.String	SHA1
static java.lang.String	SHA224
static java.lang.String	SHA256
static java.lang.String	SHA384
static java.lang.String	SHA512

Constructor Summary

Constructors

Constructor and Description
McElieceCCA2KeyGenParameterSpec() Constructor.
McElieceCCA2KeyGenParameterSpec(int keysize) Constructor.
McElieceCCA2KeyGenParameterSpec(int m, int t) Constructor.
McElieceCCA2KeyGenParameterSpec(int m, int t, int poly) Constructor.
McElieceCCA2KeyGenParameterSpec(int m, int t, int poly, java.lang.String digest)
McElieceCCA2KeyGenParameterSpec(int m, int t, java.lang.String digest)
McElieceCCA2KeyGenParameterSpec(int keysize, java.lang.String digest)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getDigest() Return CCA-2 digest.
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

SHA1

public static final java.lang.String SHA1

See Also:

Constant Field Values

SHA224

public static final java.lang.String SHA224

See Also:

Constant Field Values

SHA256

public static final java.lang.String SHA256

See Also:

Constant Field Values

SHA384

public static final java.lang.String SHA384

See Also:

Constant Field Values

SHA512

public static final java.lang.String SHA512

See Also:

Constant Field Values

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 Detail

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec()

Constructor. Set the default parameters: extension degree.

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(int keysize)

Constructor.

Parameters:

keysize - the length of a Goppa code

Throws:

java.lang.IllegalArgumentException - if keysize < 1.

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(int keysize,
                                       java.lang.String digest)

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(int m,
                                       int t)

Constructor.

Parameters:

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

t - error correction capability of the code

Throws:

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

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(int m,
                                       int t,
                                       java.lang.String digest)

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(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:

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

McElieceCCA2KeyGenParameterSpec

public McElieceCCA2KeyGenParameterSpec(int m,
                                       int t,
                                       int poly,
                                       java.lang.String digest)

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

getDigest

public java.lang.String getDigest()

Return CCA-2 digest.