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.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.pqc.math.linearalgebra.GF2Matrix;
public class McEliecePublicKey
extends ASN1Object
{
private ASN1ObjectIdentifier oid;
private int n;
private int t;
private byte[] matrixG;
public McEliecePublicKey(ASN1ObjectIdentifier oid, int n, int t, GF2Matrix g)
{
this.oid = oid;
this.n = n;
this.t = t;
this.matrixG = g.getEncoded();
}
private McEliecePublicKey(ASN1Sequence seq)
{
oid = ((ASN1ObjectIdentifier)seq.getObjectAt(0));
BigInteger bigN = ((ASN1Integer)seq.getObjectAt(1)).getValue();
n = bigN.intValue();
BigInteger bigT = ((ASN1Integer)seq.getObjectAt(2)).getValue();
t = bigT.intValue();
matrixG = ((ASN1OctetString)seq.getObjectAt(3)).getOctets();
}
public ASN1ObjectIdentifier getOID()
{
return oid;
}
public int getN()
{
return n;
}
public int getT()
{
return t;
}
public GF2Matrix getG()
{
return new GF2Matrix(matrixG);
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
// encode <oidString>
v.add(oid);
// encode <n>
v.add(new ASN1Integer(n));
// encode <t>
v.add(new ASN1Integer(t));
// encode <matrixG>
v.add(new DEROctetString(matrixG));
return new DERSequence(v);
}
public static McEliecePublicKey getInstance(Object o)
{
if (o instanceof McEliecePublicKey)
{
return (McEliecePublicKey)o;
}
else if (o != null)
{
return new McEliecePublicKey(ASN1Sequence.getInstance(o));
}
return null;
}
}