org.bouncycastle.pqc.crypto.xwing.XWingPublicKeyParameters Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcprov-jdk14 Show documentation

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4.

The newest version!

package org.bouncycastle.pqc.crypto.xwing;

import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.X25519PublicKeyParameters;
import org.bouncycastle.pqc.crypto.mlkem.MLKEMParameters;
import org.bouncycastle.pqc.crypto.mlkem.MLKEMPublicKeyParameters;
import org.bouncycastle.util.Arrays;

public class XWingPublicKeyParameters
    extends XWingKeyParameters
{
    private final MLKEMPublicKeyParameters kybPub;
    private final X25519PublicKeyParameters xdhPub;

    XWingPublicKeyParameters(AsymmetricKeyParameter kybPub, AsymmetricKeyParameter xdhPub)
    {
        super(false);

        this.kybPub = (MLKEMPublicKeyParameters)kybPub;
        this.xdhPub = (X25519PublicKeyParameters)xdhPub;
    }

    public XWingPublicKeyParameters(byte[] encoding)
    {
        super(false);

        this.kybPub = new MLKEMPublicKeyParameters(MLKEMParameters.ml_kem_768, Arrays.copyOfRange(encoding, 0, encoding.length - X25519PublicKeyParameters.KEY_SIZE));
        this.xdhPub = new X25519PublicKeyParameters(encoding, encoding.length - X25519PublicKeyParameters.KEY_SIZE);
    }

    MLKEMPublicKeyParameters getKyberPublicKey()
    {
        return kybPub;
    }

    X25519PublicKeyParameters getXDHPublicKey()
    {
        return xdhPub;
    }

    public byte[] getEncoded()
    {
        return Arrays.concatenate(kybPub.getEncoded(), xdhPub.getEncoded());
    }
}