org.bouncycastle.pqc.jcajce.provider.rainbow
Class BCRainbowPublicKey

java.lang.Object
  org.bouncycastle.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

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

BCRainbowPublicKey(RainbowPublicKeyParameters params)

BCRainbowPublicKey(RainbowPublicKeySpec keySpec)
Constructor (used by the RainbowKeyFactorySpi).

Method Summary

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(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