$)Chow to read PKCS#8 file

Dear all,

I tried to test Diffie-Hellman algorithm using 01-phaos-xmlenc-3.
First, i need to read dh-priv-key.der, but i cannot.

My program is very simple like this.
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  private static byte[] getRawKey(String strFile) throws Exception
  {
      File keyfile = new File(strFile);
      DataInputStream in = new DataInputStream(new FileInputStream(keyfile));
      byte[] rawkey = new byte[(int)keyfile.length()];
      in.readFully(rawkey);
      in.close();
      return rawkey;
  }
  public static void main(String[] args) throws Exception 
  {
    Security.addProvider(new BouncyCastleProvider());  
    byte[] buffer = getRawKey("dh-priv-key.der");

    KeyFactory kf = KeyFactory.getInstance("DH");
    PKCS8EncodedKeySpec keysp = new PKCS8EncodedKeySpec (buffer);
    System.out.println(keysp.toString());
    try{
      PrivateKey pk = kf.generatePrivate(keysp);
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }
  }
---------------------------------

i get an error,

java.security.spec.InvalidKeySpecException: java.lang.RuntimeException: algorithm identifier in key not recognised at org.bouncycastle.jce.provider.JDKKeyFactory$DH.engineGeneratePrivate(JDKKeyFactory.java:331)
at java.security.KeyFactory.generatePrivate(KeyFactory.java:197)
at Test.CertificateTest.main(CertificateTest.java:60)

Please, help me.
Thank you in advance.




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Yuna Kim	CSE, HPC lab in POSTECH
phone : +82-054-279-2915
cellp : 016-324-7963
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