org.bouncycastle.pqc.jcajce.provider.rainbow

Class BCRainbowPrivateKey

java.lang.Object

org.bouncycastle.pqc.jcajce.provider.rainbow.BCRainbowPrivateKey

All Implemented Interfaces:

java.io.Serializable, java.security.Key, java.security.PrivateKey, javax.security.auth.Destroyable

public class BCRainbowPrivateKey
extends java.lang.Object
implements java.security.PrivateKey

The Private key in Rainbow consists of the linear affine maps L1, L2 and the map F, consisting of quadratic polynomials. In this implementation, we denote: L1 = A1*x + b1 L2 = A2*x + b2

The coefficients of the polynomials in F are stored in 3-dimensional arrays per layer. The indices of these arrays denote the polynomial, and the variables.

More detailed information about the private key is to be found in the paper of Jintai Ding, Dieter Schmidt: Rainbow, a New Multivariable Polynomial Signature Scheme. ACNS 2005: 164-175 (https://dx.doi.org/10.1007/11496137_12)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BCRainbowPrivateKey(RainbowPrivateKeyParameters params)
BCRainbowPrivateKey(RainbowPrivateKeySpec keySpec) Constructor (used by the RainbowKeyFactorySpi).
BCRainbowPrivateKey(short[][] A1inv, short[] b1, short[][] A2inv, short[] b2, int[] vi, Layer[] layers) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other) Compare this Rainbow private key with another object.
java.lang.String	getAlgorithm()
short[]	getB1() Getter for the translation part of the private quadratic map L1.
short[]	getB2() Getter for the translation part of the private quadratic map L2.
byte[]	getEncoded()
java.lang.String	getFormat()
short[][]	getInvA1() Getter for the inverse matrix of A1.
short[][]	getInvA2() Getter for the inverse matrix of A2
Layer[]	getLayers() Returns the layers contained in the private key
int[]	getVi() Returns the array of vi-s
int	hashCode()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.security.auth.Destroyable

destroy, isDestroyed

Constructor Detail

BCRainbowPrivateKey

public BCRainbowPrivateKey(short[][] A1inv,
                           short[] b1,
                           short[][] A2inv,
                           short[] b2,
                           int[] vi,
                           Layer[] layers)

Constructor.

Parameters:

A1inv -

b1 -

A2inv -

b2 -

layers -

BCRainbowPrivateKey

public BCRainbowPrivateKey(RainbowPrivateKeySpec keySpec)

Constructor (used by the RainbowKeyFactorySpi).

Parameters:

keySpec - a RainbowPrivateKeySpec

BCRainbowPrivateKey

public BCRainbowPrivateKey(RainbowPrivateKeyParameters params)

Method Detail

getInvA1

public short[][] getInvA1()

Getter for the inverse matrix of A1.

Returns:

the A1inv inverse

getB1

public short[] getB1()

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

Returns:

b1 the translation part of L1

getB2

public short[] getB2()

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

Returns:

b2 the translation part of L2

getInvA2

public short[][] getInvA2()

Getter for the inverse matrix of A2

Returns:

the A2inv

getLayers

public Layer[] getLayers()

Returns the layers contained in the private key

Returns:

layers

getVi

public int[] getVi()

Returns the array of vi-s

Returns:

the vi

equals

public boolean equals(java.lang.Object other)

Compare this Rainbow private key with another object.

Overrides:

equals in class java.lang.Object

Parameters:

other - the other object

Returns:

the result of the comparison

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

getAlgorithm

public final java.lang.String getAlgorithm()

Specified by:

getAlgorithm in interface java.security.Key

Returns:

name of the algorithm - "Rainbow"

getEncoded

public byte[] getEncoded()

Specified by:

getEncoded in interface java.security.Key

getFormat

public java.lang.String getFormat()

Specified by:

getFormat in interface java.security.Key