// 
// Decompiled by Procyon v0.6.0
// 

package org.bouncycastle.oer.its.ieee1609dot2.basetypes;

import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.math.ec.ECPoint;
import java.math.BigInteger;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Null;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Choice;

public class EccP256CurvePoint extends EccCurvePoint implements ASN1Choice
{
    public static final int xonly = 0;
    public static final int fill = 1;
    public static final int compressedY0 = 2;
    public static final int compressedY1 = 3;
    public static final int uncompressedP256 = 4;
    private final int choice;
    private final ASN1Encodable eccp256CurvePoint;
    
    public EccP256CurvePoint(final int choice, final ASN1Encodable eccp256CurvePoint) {
        this.choice = choice;
        this.eccp256CurvePoint = eccp256CurvePoint;
    }
    
    private EccP256CurvePoint(final ASN1TaggedObject asn1TaggedObject) {
        this.choice = asn1TaggedObject.getTagNo();
        switch (asn1TaggedObject.getTagNo()) {
            case 1: {
                this.eccp256CurvePoint = ASN1Null.getInstance(asn1TaggedObject.getExplicitBaseObject());
                break;
            }
            case 0:
            case 2:
            case 3: {
                this.eccp256CurvePoint = ASN1OctetString.getInstance(asn1TaggedObject.getExplicitBaseObject());
                break;
            }
            case 4: {
                this.eccp256CurvePoint = Point256.getInstance(asn1TaggedObject.getExplicitBaseObject());
                break;
            }
            default: {
                throw new IllegalArgumentException("invalid choice value " + asn1TaggedObject.getTagNo());
            }
        }
    }
    
    public static EccP256CurvePoint xOnly(final ASN1OctetString asn1OctetString) {
        return new EccP256CurvePoint(0, asn1OctetString);
    }
    
    public static EccP256CurvePoint xOnly(final byte[] array) {
        return new EccP256CurvePoint(0, new DEROctetString(Arrays.clone(array)));
    }
    
    public static EccP256CurvePoint fill() {
        return new EccP256CurvePoint(1, DERNull.INSTANCE);
    }
    
    public static EccP256CurvePoint compressedY0(final ASN1OctetString asn1OctetString) {
        return new EccP256CurvePoint(2, asn1OctetString);
    }
    
    public static EccP256CurvePoint compressedY1(final ASN1OctetString asn1OctetString) {
        return new EccP256CurvePoint(3, asn1OctetString);
    }
    
    public static EccP256CurvePoint compressedY0(final byte[] array) {
        return new EccP256CurvePoint(2, new DEROctetString(Arrays.clone(array)));
    }
    
    public static EccP256CurvePoint compressedY1(final byte[] array) {
        return new EccP256CurvePoint(3, new DEROctetString(Arrays.clone(array)));
    }
    
    public static EccP256CurvePoint uncompressedP256(final Point256 point256) {
        return new EccP256CurvePoint(4, point256);
    }
    
    public static EccP256CurvePoint uncompressedP256(final BigInteger x, final BigInteger y) {
        return new EccP256CurvePoint(4, Point256.builder().setX(x).setY(y).createPoint256());
    }
    
    public static EccP256CurvePoint createEncodedPoint(final byte[] array) {
        if (array[0] == 2) {
            final byte[] array2 = new byte[array.length - 1];
            System.arraycopy(array, 1, array2, 0, array2.length);
            return new EccP256CurvePoint(2, new DEROctetString(array2));
        }
        if (array[0] == 3) {
            final byte[] array3 = new byte[array.length - 1];
            System.arraycopy(array, 1, array3, 0, array3.length);
            return new EccP256CurvePoint(3, new DEROctetString(array3));
        }
        if (array[0] == 4) {
            return new EccP256CurvePoint(4, new Point256(new DEROctetString(Arrays.copyOfRange(array, 1, 34)), new DEROctetString(Arrays.copyOfRange(array, 34, 66))));
        }
        throw new IllegalArgumentException("unrecognised encoding " + array[0]);
    }
    
    public EccP256CurvePoint createCompressed(final ECPoint ecPoint) {
        int n = 0;
        final byte[] encoded = ecPoint.getEncoded(true);
        if (encoded[0] == 2) {
            n = 2;
        }
        else if (encoded[0] == 3) {
            n = 3;
        }
        final byte[] array = new byte[encoded.length - 1];
        System.arraycopy(encoded, 1, array, 0, array.length);
        return new EccP256CurvePoint(n, new DEROctetString(array));
    }
    
    public static EccP256CurvePoint getInstance(final Object o) {
        if (o instanceof EccP256CurvePoint) {
            return (EccP256CurvePoint)o;
        }
        if (o != null) {
            return new EccP256CurvePoint(ASN1TaggedObject.getInstance(o, 128));
        }
        return null;
    }
    
    public ASN1Encodable getEccp256CurvePoint() {
        return this.eccp256CurvePoint;
    }
    
    public int getChoice() {
        return this.choice;
    }
    
    @Override
    public ASN1Primitive toASN1Primitive() {
        return new DERTaggedObject(this.choice, this.eccp256CurvePoint);
    }
    
    @Override
    public byte[] getEncodedPoint() {
        byte[] concatenate = null;
        switch (this.choice) {
            case 2: {
                final byte[] octets = ASN1OctetString.getInstance(this.eccp256CurvePoint).getOctets();
                concatenate = new byte[octets.length + 1];
                concatenate[0] = 2;
                System.arraycopy(octets, 0, concatenate, 1, octets.length);
                break;
            }
            case 3: {
                final byte[] octets2 = ASN1OctetString.getInstance(this.eccp256CurvePoint).getOctets();
                concatenate = new byte[octets2.length + 1];
                concatenate[0] = 3;
                System.arraycopy(octets2, 0, concatenate, 1, octets2.length);
                break;
            }
            case 4: {
                final Point256 instance = Point256.getInstance(this.eccp256CurvePoint);
                concatenate = Arrays.concatenate(new byte[] { 4 }, instance.getX().getOctets(), instance.getY().getOctets());
                break;
            }
            case 0: {
                throw new IllegalStateException("x Only not implemented");
            }
            default: {
                throw new IllegalStateException("unknown point choice");
            }
        }
        return concatenate;
    }
}