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;
import org.bouncycastle.pqc.math.linearalgebra.GF2mField;
import org.bouncycastle.pqc.math.linearalgebra.Permutation;
import org.bouncycastle.pqc.math.linearalgebra.PolynomialGF2mSmallM;
public class McElieceCCA2PrivateKey
extends ASN1Object
{
private ASN1ObjectIdentifier oid;
private int n;
private int k;
private byte[] encField;
private byte[] encGp;
private byte[] encP;
private byte[] encH;
private byte[][] encqInv;
public McElieceCCA2PrivateKey(ASN1ObjectIdentifier oid, int n, int k, GF2mField field, PolynomialGF2mSmallM goppaPoly, Permutation p, GF2Matrix h, PolynomialGF2mSmallM[] qInv)
{
this.oid = oid;
this.n = n;
this.k = k;
this.encField = field.getEncoded();
this.encGp = goppaPoly.getEncoded();
this.encP = p.getEncoded();
this.encH = h.getEncoded();
this.encqInv = new byte[qInv.length][];
for (int i = 0; i != qInv.length; i++)
{
encqInv[i] = qInv[i].getEncoded();
}
}
private McElieceCCA2PrivateKey(ASN1Sequence seq)
{
oid = ((ASN1ObjectIdentifier)seq.getObjectAt(0));
BigInteger bigN = ((ASN1Integer)seq.getObjectAt(1)).getValue();
n = bigN.intValue();
BigInteger bigK = ((ASN1Integer)seq.getObjectAt(2)).getValue();
k = bigK.intValue();
encField = ((ASN1OctetString)seq.getObjectAt(3)).getOctets();
encGp = ((ASN1OctetString)seq.getObjectAt(4)).getOctets();
encP = ((ASN1OctetString)seq.getObjectAt(5)).getOctets();
encH = ((ASN1OctetString)seq.getObjectAt(6)).getOctets();
ASN1Sequence asnQInv = (ASN1Sequence)seq.getObjectAt(7);
encqInv = new byte[asnQInv.size()][];
for (int i = 0; i < asnQInv.size(); i++)
{
encqInv[i] = ((ASN1OctetString)asnQInv.getObjectAt(i)).getOctets();
}
}
public ASN1ObjectIdentifier getOID()
{
return oid;
}
public int getN()
{
return n;
}
public int getK()
{
return k;
}
public GF2mField getField()
{
return new GF2mField(encField);
}
public PolynomialGF2mSmallM getGoppaPoly()
{
return new PolynomialGF2mSmallM(this.getField(), encGp);
}
public Permutation getP()
{
return new Permutation(encP);
}
public GF2Matrix getH()
{
return new GF2Matrix(encH);
}
public PolynomialGF2mSmallM[] getQInv()
{
PolynomialGF2mSmallM[] qInv = new PolynomialGF2mSmallM[encqInv.length];
GF2mField field = this.getField();
for (int i = 0; i < encqInv.length; i++)
{
qInv[i] = new PolynomialGF2mSmallM(field, encqInv[i]);
}
return qInv;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
// encode <oidString>
v.add(oid);
// encode <n>
v.add(new ASN1Integer(n));
// encode <k>
v.add(new ASN1Integer(k));
// encode <field>
v.add(new DEROctetString(encField));
// encode <gp>
v.add(new DEROctetString(encGp));
// encode <p>
v.add(new DEROctetString(encP));
// encode <h>
v.add(new DEROctetString(encH));
// encode <q>
ASN1EncodableVector asnQInv = new ASN1EncodableVector();
for (int i = 0; i < encqInv.length; i++)
{
asnQInv.add(new DEROctetString(encqInv[i]));
}
v.add(new DERSequence(asnQInv));
return new DERSequence(v);
}
public static McElieceCCA2PrivateKey getInstance(Object o)
{
if (o instanceof McElieceCCA2PrivateKey)
{
return (McElieceCCA2PrivateKey)o;
}
else if (o != null)
{
return new McElieceCCA2PrivateKey(ASN1Sequence.getInstance(o));
}
return null;
}
}