org.bouncycastle.pqc.crypto.falcon

Class FalconPrivateKeyParameters

java.lang.Object

org.bouncycastle.crypto.params.AsymmetricKeyParameter

org.bouncycastle.pqc.crypto.falcon.FalconKeyParameters

org.bouncycastle.pqc.crypto.falcon.FalconPrivateKeyParameters

All Implemented Interfaces:

CipherParameters

public class FalconPrivateKeyParameters
extends FalconKeyParameters

Constructor Summary

Constructors

Constructor and Description
FalconPrivateKeyParameters(FalconParameters parameters, byte[] f, byte[] g, byte[] F, byte[] pk_encoded)

Method Summary

Modifier and Type	Method and Description
byte[]	getEncoded()
byte[]	getG()
byte[]	getPublicKey() Return the encoded public key for this private key.
FalconPublicKeyParameters	getPublicKeyParameters() Return the matching FalconPublicKeyParameters for this private key, mirroring MLDSAPrivateKeyParameters.getPublicKeyParameters().
byte[]	getSpolyf()
byte[]	getSpolyF()

Methods inherited from class org.bouncycastle.pqc.crypto.falcon.FalconKeyParameters

getParameters

Methods inherited from class org.bouncycastle.crypto.params.AsymmetricKeyParameter

isPrivate

Methods inherited from class java.lang.Object

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

Constructor Detail

FalconPrivateKeyParameters

public FalconPrivateKeyParameters(FalconParameters parameters,
                                  byte[] f,
                                  byte[] g,
                                  byte[] F,
                                  byte[] pk_encoded)

Method Detail

getEncoded

public byte[] getEncoded()

getPublicKey

public byte[] getPublicKey()

Return the encoded public key for this private key.

When this instance still carries the encoded public key (the usual case for a freshly generated key) that encoding is returned directly. When it does not — e.g. the key was reconstructed from only its private encoding (f ‖ g ‖ F), with no public key bytes retained — the public key h is recomputed from the private polynomials (h = g * f^-1 mod (q, xⁿ+1)) (github #2297).

getPublicKeyParameters

public FalconPublicKeyParameters getPublicKeyParameters()

Return the matching FalconPublicKeyParameters for this private key, mirroring MLDSAPrivateKeyParameters.getPublicKeyParameters(). Lets wallet / HSM code recover the public key from a stored private key without re-running keygen; see getPublicKey() for how the key is recovered when no public key bytes were retained (github #2297).

getSpolyf

public byte[] getSpolyf()

getG

public byte[] getG()

getSpolyF

public byte[] getSpolyF()