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  package org.bouncycastle.jcajce.provider.asymmetric.ec;
  
 
 
 public class BCECPrivateKey
 {
     static final long serialVersionUID = 994553197664784084L;
 
     private String          algorithm = "EC";
     private boolean         withCompression;
 
     private transient BigInteger              d;
     private transient ECParameterSpec         ecSpec;
     private transient ProviderConfiguration   configuration;
     private transient DERBitString            publicKey;
 
 
     protected BCECPrivateKey()
     {
     }
 
     public BCECPrivateKey(
         ECPrivateKey key,
         ProviderConfiguration configuration)
     {
         this. = key.getS();
         this. = key.getAlgorithm();
         this. = key.getParams();
         this. = configuration;
     }
 
     public BCECPrivateKey(
         String algorithm,
         org.bouncycastle.jce.spec.ECPrivateKeySpec spec,
         ProviderConfiguration configuration)
     {
         this. = algorithm;
         this. = spec.getD();
 
         if (spec.getParams() != null// can be null if implicitlyCA
         {
             ECCurve curve = spec.getParams().getCurve();
             EllipticCurve ellipticCurve;
 
             ellipticCurve = EC5Util.convertCurve(curvespec.getParams().getSeed());
 
             this. = EC5Util.convertSpec(ellipticCurvespec.getParams());
         }
         else
         {
             this. = null;
         }
 
         this. = configuration;
     }
 
 
     public BCECPrivateKey(
         String algorithm,
         ECPrivateKeySpec spec,
         ProviderConfiguration configuration)
     {
         this. = algorithm;
        this. = spec.getS();
        this. = spec.getParams();
        this. = configuration;
    }
    public BCECPrivateKey(
        String algorithm,
        BCECPrivateKey key)
    {
        this. = algorithm;
        this. = key.d;
        this. = key.ecSpec;
        this. = key.withCompression;
        this. = key.attrCarrier;
        this. = key.publicKey;
        this. = key.configuration;
    }
    public BCECPrivateKey(
        String algorithm,
        ECPrivateKeyParameters params,
        BCECPublicKey pubKey,
        ECParameterSpec spec,
        ProviderConfiguration configuration)
    {
        ECDomainParameters      dp = params.getParameters();
        this. = algorithm;
        this. = params.getD();
        this. = configuration;
        if (spec == null)
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());
            this. = new ECParameterSpec(
                            ellipticCurve,
                            new ECPoint(
                                    dp.getG().getAffineXCoord().toBigInteger(),
                                    dp.getG().getAffineYCoord().toBigInteger()),
                            dp.getN(),
                            dp.getH().intValue());
        }
        else
        {
            this. = spec;
        }
         = getPublicKeyDetails(pubKey);
    }
    public BCECPrivateKey(
        String algorithm,
        ECPrivateKeyParameters params,
        BCECPublicKey pubKey,
        org.bouncycastle.jce.spec.ECParameterSpec spec,
        ProviderConfiguration configuration)
    {
        ECDomainParameters      dp = params.getParameters();
        this. = algorithm;
        this. = params.getD();
        this. = configuration;
        if (spec == null)
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());
            this. = new ECParameterSpec(
                            ellipticCurve,
                            new ECPoint(
                                    dp.getG().getAffineXCoord().toBigInteger(),
                                    dp.getG().getAffineYCoord().toBigInteger()),
                            dp.getN(),
                            dp.getH().intValue());
        }
        else
        {
            EllipticCurve ellipticCurve = EC5Util.convertCurve(spec.getCurve(), spec.getSeed());
            this. = EC5Util.convertSpec(ellipticCurvespec);
        }
         = getPublicKeyDetails(pubKey);
    }
    public BCECPrivateKey(
        String algorithm,
        ECPrivateKeyParameters params,
        ProviderConfiguration configuration)
    {
        this. = algorithm;
        this. = params.getD();
        this. = null;
        this. = configuration;
    }
        String         algorithm,
        PrivateKeyInfo info,
        ProviderConfiguration configuration)
        throws IOException
    {
        this. = algorithm;
        this. = configuration;
        populateFromPrivKeyInfo(info);
    }
    private void populateFromPrivKeyInfo(PrivateKeyInfo info)
        throws IOException
    {
        X962Parameters params = X962Parameters.getInstance(info.getPrivateKeyAlgorithm().getParameters());
        if (params.isNamedCurve())
        {
            ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(params.getParameters());
            X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid);
            EllipticCurve ellipticCurve = EC5Util.convertCurve(ecP.getCurve(), ecP.getSeed());
             = new ECNamedCurveSpec(
                    ECUtil.getCurveName(oid),
                    ellipticCurve,
                    new ECPoint(
                            ecP.getG().getAffineXCoord().toBigInteger(),
                            ecP.getG().getAffineYCoord().toBigInteger()),
                    ecP.getN(),
                    ecP.getH());
        }
        else if (params.isImplicitlyCA())
        {
             = null;
        }
        else
        {
            X9ECParameters      ecP = X9ECParameters.getInstance(params.getParameters());
            EllipticCurve       ellipticCurve = EC5Util.convertCurve(ecP.getCurve(), ecP.getSeed());
            this. = new ECParameterSpec(
                ellipticCurve,
                new ECPoint(
                        ecP.getG().getAffineXCoord().toBigInteger(),
                        ecP.getG().getAffineYCoord().toBigInteger()),
                ecP.getN(),
                ecP.getH().intValue());
        }
        ASN1Encodable privKey = info.parsePrivateKey();
        if (privKey instanceof ASN1Integer)
        {
            ASN1Integer          derD = ASN1Integer.getInstance(privKey);
            this. = derD.getValue();
        }
        else
        {
            org.bouncycastle.asn1.sec.ECPrivateKey ec = org.bouncycastle.asn1.sec.ECPrivateKey.getInstance(privKey);
            this. = ec.getKey();
            this. = ec.getPublicKey();
        }
    }
    public String getAlgorithm()
    {
        return ;
    }

    
return the encoding format we produce in getEncoded().

Returns:
the string "PKCS#8"
    public String getFormat()
    {
        return "PKCS#8";
    }

    
Return a PKCS8 representation of the key. The sequence returned represents a full PrivateKeyInfo object.

Returns:
a PKCS8 representation of the key.
    public byte[] getEncoded()
    {
        X962Parameters  params;
        int orderBitLength;
        if ( instanceof ECNamedCurveSpec)
        {
            ASN1ObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec)).getName());
            if (curveOid == null)  // guess it's the OID
            {
                curveOid = new ASN1ObjectIdentifier(((ECNamedCurveSpec)).getName());
            }
            params = new X962Parameters(curveOid);
            orderBitLength = ECUtil.getOrderBitLength(.getOrder(), this.getS());
        }
        else if ( == null)
        {
            params = new X962Parameters(.);
            orderBitLength = ECUtil.getOrderBitLength(nullthis.getS());
        }
        else
        {
            ECCurve curve = EC5Util.convertCurve(.getCurve());
            X9ECParameters ecP = new X9ECParameters(
                curve,
                EC5Util.convertPoint(curve.getGenerator(), ),
                .getOrder(),
                BigInteger.valueOf(.getCofactor()),
                .getCurve().getSeed());
            params = new X962Parameters(ecP);
            orderBitLength = ECUtil.getOrderBitLength(.getOrder(), this.getS());
        }
        
        PrivateKeyInfo          info;
        org.bouncycastle.asn1.sec.ECPrivateKey            keyStructure;
        if ( != null)
        {
            keyStructure = new org.bouncycastle.asn1.sec.ECPrivateKey(orderBitLengththis.getS(), params);
        }
        else
        {
            keyStructure = new org.bouncycastle.asn1.sec.ECPrivateKey(orderBitLengththis.getS(), params);
        }
        try
        {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(.params), keyStructure);
            return info.getEncoded(.);
        }
        catch (IOException e)
        {
            return null;
        }
    }
    public ECParameterSpec getParams()
    {
        return ;
    }
    {
        if ( == null)
        {
            return null;
        }
        
        return EC5Util.convertSpec();
    }
    {
        if ( != null)
        {
            return EC5Util.convertSpec();
        }
        return .getEcImplicitlyCa();
    }
    public BigInteger getS()
    {
        return ;
    }
    public BigInteger getD()
    {
        return ;
    }
    
    public void setBagAttribute(
        ASN1ObjectIdentifier oid,
        ASN1Encodable        attribute)
    {
        .setBagAttribute(oidattribute);
    }
        ASN1ObjectIdentifier oid)
    {
        return .getBagAttribute(oid);
    }
    {
        return .getBagAttributeKeys();
    }
    public void setPointFormat(String style)
    {
        = !("UNCOMPRESSED".equalsIgnoreCase(style));
    }
    public boolean equals(Object o)
    {
        if (!(o instanceof BCECPrivateKey))
        {
            return false;
        }
        BCECPrivateKey other = (BCECPrivateKey)o;
        return getD().equals(other.getD()) && (engineGetSpec().equals(other.engineGetSpec()));
    }
    public int hashCode()
    {
        return getD().hashCode() ^ engineGetSpec().hashCode();
    }
    public String toString()
    {
        StringBuffer    buf = new StringBuffer();
        String          nl = System.getProperty("line.separator");
        buf.append("EC Private Key").append(nl);
        buf.append("             S: ").append(this..toString(16)).append(nl);
        return buf.toString();
    }
    {
        try
        {
            SubjectPublicKeyInfo info = SubjectPublicKeyInfo.getInstance(ASN1Primitive.fromByteArray(pub.getEncoded()));
            return info.getPublicKeyData();
        }
        catch (IOException e)
        {   // should never happen
            return null;
        }
    }
    private void readObject(
        ObjectInputStream in)
        throws IOExceptionClassNotFoundException
    {
        in.defaultReadObject();
        byte[] enc = (byte[])in.readObject();
        populateFromPrivKeyInfo(PrivateKeyInfo.getInstance(ASN1Primitive.fromByteArray(enc)));
        this. = new PKCS12BagAttributeCarrierImpl();
    }
    private void writeObject(
        ObjectOutputStream out)
        throws IOException
    {
        out.defaultWriteObject();
        out.writeObject(this.getEncoded());
    }
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