de.flexiprovider.pqc.rainbow
Class RainbowPrivateKeySpec

java.lang.Object
  |
  +--de.flexiprovider.pqc.rainbow.RainbowPrivateKeySpec

All Implemented Interfaces:

KeySpec, java.security.spec.KeySpec

public class RainbowPrivateKeySpec

extends java.lang.Object

implements KeySpec

This class provides a specification for a RainbowSignature private key.

Author:

Patrick Neugebauer, Marius Senftleben, Tsvetoslava Vateva

See Also:

RainbowPrivateKey, KeySpec

Constructor Summary

protected	RainbowPrivateKeySpec(java.lang.String oid, byte[][] A1inv, byte[] b1, byte[][] A2inv, byte[] b2, byte[] vi, byte[][][][] coeff_alpha, byte[][][][] coeff_beta, byte[][][] coeff_gamma, byte[][] coeff_eta) Constructor used by the RainbowKeyFactory.
protected	RainbowPrivateKeySpec(java.lang.String oid, short[][] A1inv, short[] b1, short[][] A2inv, short[] b2, int[] vi, Layer[] layers) Constructor

Method Summary

protected short[][]	getA1inv() Getter for the inverse matrix of A1.
protected short[][]	getA2inv() Getter for the inverse matrix of A2
java.lang.String	getAlgorithm()
protected short[]	getb1() Getter for the translation part of the private quadratic map L1.
protected short[]	getb2() Getter for the translation part of the private quadratic map L2.
protected Layer[]	getLayers() Returns the layers contained in the private key
java.lang.String	getOIDString()
protected int[]	getVi() /** Returns the array of vi-s

Methods inherited from class java.lang.Object

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

Constructor Detail

RainbowPrivateKeySpec

protected RainbowPrivateKeySpec(java.lang.String oid,
                                short[][] A1inv,
                                short[] b1,
                                short[][] A2inv,
                                short[] b2,
                                int[] vi,
                                Layer[] layers)

Constructor

Parameters:

oid - the OID of the algorithm

A1inv - the inverse of A1(the matrix part of the affine linear map L1) (n-v1 x n-v1 matrix)

b1 - translation vector, part of the linear affine map L1

A2inv - the inverse of A2(the matrix part of the affine linear map L2) (n x n matrix)

b2 - translation vector, part of the linear affine map L2

vi - the number of Vinegar-variables per layer

layers - the polynomials with their coefficients of private map F

RainbowPrivateKeySpec

protected RainbowPrivateKeySpec(java.lang.String oid,
                                byte[][] A1inv,
                                byte[] b1,
                                byte[][] A2inv,
                                byte[] b2,
                                byte[] vi,
                                byte[][][][] coeff_alpha,
                                byte[][][][] coeff_beta,
                                byte[][][] coeff_gamma,
                                byte[][] coeff_eta)

Constructor used by the RainbowKeyFactory. It constructs internal data types out of these bytes got from ASN.1 decoding.

Parameters:

oid - the OID of the algorithm

A1inv - the inverse of A1(the matrix part of the affine linear map L1) (n-v1 x n-v1 matrix) (in bytes)

b1 - translation vector, part of the linear affine map L1 (in bytes)

A2inv - the inverse of A2(the matrix part of the affine linear map L2) (n x n matrix) (in bytes)

b2 - translation vector, part of the linear affine map L1 (in bytes)

vi - number of Vinegar-variables per layer (in bytes)

coeff_alpha - alpha-coefficients of the polynomials in this layer (in bytes)

coeff_beta - beta-coefficients of the polynomials in this layer (in bytes)

coeff_gamma - gamma-coefficients of the polynomials in this layer (in bytes)

coeff_eta - eta-coefficients of the polynomials in this layer (in bytes)

Method Detail

getAlgorithm

public final java.lang.String getAlgorithm()

Returns:

name of the algorithm - "Rainbow"

getOIDString

public java.lang.String getOIDString()

Returns:

the OID string identifying the algorithm.

getb1

protected short[] getb1()

Getter for the translation part of the private quadratic map L1.

Returns:

b1 the translation part of L1

getA1inv

protected short[][] getA1inv()

Getter for the inverse matrix of A1.

Returns:

the A1inv inverse

getb2

protected short[] getb2()

Getter for the translation part of the private quadratic map L2.

Returns:

b2 the translation part of L2

getA2inv

protected short[][] getA2inv()

Getter for the inverse matrix of A2

Returns:

the A2inv

getLayers

protected Layer[] getLayers()

Returns the layers contained in the private key

Returns:

layers

getVi

protected int[] getVi()

/** Returns the array of vi-s

Returns:

the vi