org.spongycastle.pqc.jcajce.provider.rainbow

Class BCRainbowPublicKey

java.lang.Object

org.spongycastle.pqc.jcajce.provider.rainbow.BCRainbowPublicKey

All Implemented Interfaces:

java.io.Serializable, java.security.Key, java.security.PublicKey

public class BCRainbowPublicKey
extends java.lang.Object
implements java.security.PublicKey

This class implements CipherParameters and PublicKey.

The public key in Rainbow consists of n - v1 polynomial components of the private key's F and the field structure of the finite field k.

The quadratic (or mixed) coefficients of the polynomials from the public key are stored in the 2-dimensional array in lexicographical order, requiring n * (n + 1) / 2 entries for each polynomial. The singular terms are stored in a 2-dimensional array requiring n entries per polynomial, the scalar term of each polynomial is stored in a 1-dimensional array.

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

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BCRainbowPublicKey(int docLength, short[][] coeffQuadratic, short[][] coeffSingular, short[] coeffScalar) Constructor
BCRainbowPublicKey(org.spongycastle.pqc.crypto.rainbow.RainbowPublicKeyParameters params)
BCRainbowPublicKey(RainbowPublicKeySpec keySpec) Constructor (used by the RainbowKeyFactorySpi).

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other) Compare this Rainbow public key with another object.
java.lang.String	getAlgorithm()
short[][]	getCoeffQuadratic()
short[]	getCoeffScalar()
short[][]	getCoeffSingular()
int	getDocLength()
byte[]	getEncoded()
java.lang.String	getFormat()
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

BCRainbowPublicKey

public BCRainbowPublicKey(int docLength,
                          short[][] coeffQuadratic,
                          short[][] coeffSingular,
                          short[] coeffScalar)

Constructor

Parameters:

docLength -

coeffQuadratic -

coeffSingular -

coeffScalar -

BCRainbowPublicKey

public BCRainbowPublicKey(RainbowPublicKeySpec keySpec)

Constructor (used by the RainbowKeyFactorySpi).

Parameters:

keySpec - a RainbowPublicKeySpec

BCRainbowPublicKey

public BCRainbowPublicKey(org.spongycastle.pqc.crypto.rainbow.RainbowPublicKeyParameters params)

Method Detail

getDocLength

public int getDocLength()

Returns:

the docLength

getCoeffQuadratic

public short[][] getCoeffQuadratic()

Returns:

the coeffQuadratic

getCoeffSingular

public short[][] getCoeffSingular()

Returns:

the coeffSingular

getCoeffScalar

public short[] getCoeffScalar()

Returns:

the coeffScalar

equals

public boolean equals(java.lang.Object other)

Compare this Rainbow public 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"

getFormat

public java.lang.String getFormat()

Specified by:

getFormat in interface java.security.Key

getEncoded

public byte[] getEncoded()

Specified by:

getEncoded in interface java.security.Key