Home | History | Annotate | Download | only in rsa 
      1 package org.bouncycastle.jcajce.provider.asymmetric.rsa;
      2 
      3 import java.io.IOException;
      4 import java.io.ObjectInputStream;
      5 import java.io.ObjectOutputStream;
      6 import java.math.BigInteger;
      7 import java.security.interfaces.RSAPrivateKey;
      8 import java.security.spec.RSAPrivateKeySpec;
      9 import java.util.Enumeration;
     10 
     11 import org.bouncycastle.asn1.ASN1Encodable;
     12 import org.bouncycastle.asn1.ASN1ObjectIdentifier;
     13 import org.bouncycastle.asn1.DERNull;
     14 import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
     15 import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
     16 import org.bouncycastle.crypto.params.RSAKeyParameters;
     17 import org.bouncycastle.jcajce.provider.asymmetric.util.KeyUtil;
     18 import org.bouncycastle.jcajce.provider.asymmetric.util.PKCS12BagAttributeCarrierImpl;
     19 import org.bouncycastle.jce.interfaces.PKCS12BagAttributeCarrier;
     20 
     21 public class BCRSAPrivateKey
     22     implements RSAPrivateKey, PKCS12BagAttributeCarrier
     23 {
     24     static final long serialVersionUID = 5110188922551353628L;
     25 
     26     private static BigInteger ZERO = BigInteger.valueOf(0);
     27 
     28     protected BigInteger modulus;
     29     protected BigInteger privateExponent;
     30 
     31     private transient PKCS12BagAttributeCarrierImpl   attrCarrier = new PKCS12BagAttributeCarrierImpl();
     32 
     33     protected BCRSAPrivateKey()
     34     {
     35     }
     36 
     37     BCRSAPrivateKey(
     38         RSAKeyParameters key)
     39     {
     40         this.modulus = key.getModulus();
     41         this.privateExponent = key.getExponent();
     42     }
     43 
     44     BCRSAPrivateKey(
     45         RSAPrivateKeySpec spec)
     46     {
     47         this.modulus = spec.getModulus();
     48         this.privateExponent = spec.getPrivateExponent();
     49     }
     50 
     51     BCRSAPrivateKey(
     52         RSAPrivateKey key)
     53     {
     54         this.modulus = key.getModulus();
     55         this.privateExponent = key.getPrivateExponent();
     56     }
     57 
     58     BCRSAPrivateKey(org.bouncycastle.asn1.pkcs.RSAPrivateKey key)
     59     {
     60         this.modulus = key.getModulus();
     61         this.privateExponent = key.getPrivateExponent();
     62     }
     63 
     64     public BigInteger getModulus()
     65     {
     66         return modulus;
     67     }
     68 
     69     public BigInteger getPrivateExponent()
     70     {
     71         return privateExponent;
     72     }
     73 
     74     public String getAlgorithm()
     75     {
     76         return "RSA";
     77     }
     78 
     79     public String getFormat()
     80     {
     81         return "PKCS#8";
     82     }
     83 
     84     public byte[] getEncoded()
     85     {
     86         return KeyUtil.getEncodedPrivateKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, DERNull.INSTANCE), new org.bouncycastle.asn1.pkcs.RSAPrivateKey(getModulus(), ZERO, getPrivateExponent(), ZERO, ZERO, ZERO, ZERO, ZERO));
     87     }
     88 
     89     public boolean equals(Object o)
     90     {
     91         if (!(o instanceof RSAPrivateKey))
     92         {
     93             return false;
     94         }
     95 
     96         if (o == this)
     97         {
     98             return true;
     99         }
    100 
    101         RSAPrivateKey key = (RSAPrivateKey)o;
    102 
    103         return getModulus().equals(key.getModulus())
    104             && getPrivateExponent().equals(key.getPrivateExponent());
    105     }
    106 
    107     public int hashCode()
    108     {
    109         return getModulus().hashCode() ^ getPrivateExponent().hashCode();
    110     }
    111 
    112     public void setBagAttribute(
    113         ASN1ObjectIdentifier oid,
    114         ASN1Encodable attribute)
    115     {
    116         attrCarrier.setBagAttribute(oid, attribute);
    117     }
    118 
    119     public ASN1Encodable getBagAttribute(
    120         ASN1ObjectIdentifier oid)
    121     {
    122         return attrCarrier.getBagAttribute(oid);
    123     }
    124 
    125     public Enumeration getBagAttributeKeys()
    126     {
    127         return attrCarrier.getBagAttributeKeys();
    128     }
    129 
    130     private void readObject(
    131         ObjectInputStream   in)
    132         throws IOException, ClassNotFoundException
    133     {
    134         in.defaultReadObject();
    135 
    136         this.attrCarrier = new PKCS12BagAttributeCarrierImpl();
    137     }
    138 
    139     private void writeObject(
    140         ObjectOutputStream  out)
    141         throws IOException
    142     {
    143         out.defaultWriteObject();
    144     }
    145 }
    146