package org.bouncycastle.jce.provider;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.math.BigInteger;import java.security.interfaces.RSAPrivateKey;import java.security.spec.RSAPrivateKeySpec;import java.util.Enumeration;import java.util.Hashtable;import java.util.Vector;import org.bouncycastle.asn1.ASN1InputStream;import org.bouncycastle.asn1.ASN1OutputStream;import org.bouncycastle.asn1.DEREncodable;import org.bouncycastle.asn1.DERObjectIdentifier;import org.bouncycastle.crypto.params.RSAKeyParameters;import org.bouncycastle.jce.interfaces.PKCS12BagAttributeCarrier;public class JCERSAPrivateKey    implements RSAPrivateKey, PKCS12BagAttributeCarrier{    protected BigInteger modulus;    protected BigInteger privateExponent;    private Hashtable   pkcs12Attributes = new Hashtable();    private Vector      pkcs12Ordering = new Vector();    protected JCERSAPrivateKey()    {    }    JCERSAPrivateKey(        RSAKeyParameters key)    {        this.modulus = key.getModulus();        this.privateExponent = key.getExponent();    }    JCERSAPrivateKey(        RSAPrivateKeySpec spec)    {        this.modulus = spec.getModulus();        this.privateExponent = spec.getPrivateExponent();    }    JCERSAPrivateKey(        RSAPrivateKey key)    {        this.modulus = key.getModulus();        this.privateExponent = key.getPrivateExponent();    }    public BigInteger getModulus()    {        return modulus;    }    public BigInteger getPrivateExponent()    {        return privateExponent;    }    public String getAlgorithm()    {        return "RSA";    }    public String getFormat()    {        return "NULL";    }    public byte[] getEncoded()    {        return null;    }    public boolean equals(Object o)    {        if (!(o instanceof RSAPrivateKey))        {            return false;        }        if (o == this)        {            return true;        }        RSAPrivateKey key = (RSAPrivateKey)o;        return getModulus().equals(key.getModulus())            && getPrivateExponent().equals(key.getPrivateExponent());    }    public int hashCode()    {        return getModulus().hashCode() ^ getPrivateExponent().hashCode();    }    public void setBagAttribute(        DERObjectIdentifier oid,        DEREncodable        attribute)    {        pkcs12Attributes.put(oid, attribute);        pkcs12Ordering.addElement(oid);    }    public DEREncodable getBagAttribute(        DERObjectIdentifier oid)    {        return (DEREncodable)pkcs12Attributes.get(oid);    }    public Enumeration getBagAttributeKeys()    {        return pkcs12Ordering.elements();    }    private void readObject(        ObjectInputStream   in)        throws IOException, ClassNotFoundException    {        this.modulus = (BigInteger)in.readObject();        Object  obj = in.readObject();        if (obj instanceof Hashtable)        {            this.pkcs12Attributes = (Hashtable)obj;            this.pkcs12Ordering = (Vector)in.readObject();        }        else        {            this.pkcs12Attributes = new Hashtable();            this.pkcs12Ordering = new Vector();            ByteArrayInputStream    bIn = new ByteArrayInputStream((byte[])obj);            ASN1InputStream         aIn = new ASN1InputStream(bIn);            DERObjectIdentifier    oid;            while ((oid = (DERObjectIdentifier)aIn.readObject()) != null)            {                this.setBagAttribute(oid, aIn.readObject());            }        }        this.privateExponent = (BigInteger)in.readObject();    }    private void writeObject(        ObjectOutputStream  out)        throws IOException    {        out.writeObject(modulus);        if (pkcs12Ordering.size() == 0)        {            out.writeObject(pkcs12Attributes);            out.writeObject(pkcs12Ordering);        }        else        {            ByteArrayOutputStream   bOut = new ByteArrayOutputStream();            ASN1OutputStream        aOut = new ASN1OutputStream(bOut);            Enumeration             e = this.getBagAttributeKeys();            while (e.hasMoreElements())            {                DEREncodable    oid = (DEREncodable)e.nextElement();                aOut.writeObject(oid);                aOut.writeObject(pkcs12Attributes.get(oid));            }            out.writeObject(bOut.toByteArray());        }        out.writeObject(privateExponent);    }}