Hi, This is very simple question. I have private key stored in file in PKCS8 DER format and protected by password. What is the easiest way to read it?

Here is the code I use to load unencrypted one:

InputStream in = new FileInputStream(privateKeyFilename);
byte[] privateKeydata = new byte[in.available()];
in.read(privateKeydata);
in.close();
KeyFactory privateKeyFactory = KeyFactory.getInstance("RSA");
PKCS8EncodedKeySpec encodedKeySpec = new PKCS8EncodedKeySpec(privateKeydata);
PrivateKey privateKey = privateKeyFactory.generatePrivate(encodedKeySpec);

Please, Help!!!