org.bouncycastle.pqc.asn1.XMSSPublicKey Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bouncycastle Show documentation

The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

There is a newer version: 1.2.2.1-jre17

Show newest version

package org.bouncycastle.pqc.asn1;

import java.math.BigInteger;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.util.Arrays;

/**
 * XMSSPublicKey
 *  *     XMSSPublicKey ::= SEQUENCE {
 *         version       INTEGER -- 0
 *         publicSeed    OCTET STRING
 *         root          OCTET STRING
 *    }
 * 
 */
public class XMSSPublicKey
    extends ASN1Object
{
    private final byte[] publicSeed;
    private final byte[] root;

    public XMSSPublicKey(byte[] publicSeed, byte[] root)
    {
        this.publicSeed = Arrays.clone(publicSeed);
        this.root = Arrays.clone(root);
    }

    private XMSSPublicKey(ASN1Sequence seq)
    {
        if (!ASN1Integer.getInstance(seq.getObjectAt(0)).hasValue(BigInteger.valueOf(0)))
        {
            throw new IllegalArgumentException("unknown version of sequence");
        }

        this.publicSeed = Arrays.clone(DEROctetString.getInstance(seq.getObjectAt(1)).getOctets());
        this.root = Arrays.clone(DEROctetString.getInstance(seq.getObjectAt(2)).getOctets());
    }

    public static XMSSPublicKey getInstance(Object o)
    {
        if (o instanceof XMSSPublicKey)
        {
            return (XMSSPublicKey)o;
        }
        else if (o != null)
        {
            return new XMSSPublicKey(ASN1Sequence.getInstance(o));
        }

        return null;
    }

    public byte[] getPublicSeed()
    {
        return Arrays.clone(publicSeed);
    }

    public byte[] getRoot()
    {
        return Arrays.clone(root);
    }

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(new ASN1Integer(0)); // version

        v.add(new DEROctetString(publicSeed));
        v.add(new DEROctetString(root));

        return new DERSequence(v);
    }
}