Reading a PublicKey \ PrivateKey type from a txt file

Question

Hi,
i want to read a PublicKey \ PrivateKey type from a txt file and input it into a method.
How can i read the data from the file while keeping or converting back to PublicKey \ PrivateKey type?
I'm working with the following:
generate = KeyPairGenerator.getInstance("ECDSA", "FlexiEC");                              
generate.initialize(ecParams, new SecureRandom());
KeyPair keyPair = generate.generateKeyPair();
............continues
**and then i write the keys to the a simple txt file.**
thanks!
Edited by: sk16 on Apr 8, 2010 10:03 PM

Answer 1

So, if i work with the two above is it ok, like:
generate = KeyPairGenerator.getInstance("ECDSA", "FlexiEC");
               generate.initialize(ecParams, new SecureRandom());
               KeyPair keyPair = generate.generateKeyPair();
               // Pub. and Priv. key objects.
               PublicKey publicKey = keyPair.getPublic();
               PrivateKey privateKey = keyPair.getPrivate();
               // Write keys to separate files.
               FileOutputStream fos = new FileOutputStream(publicKeyFile);
               fos.write(publicKey.getEncoded());
               fos.close();
               FileOutputStream fos1 = new FileOutputStream(privateKeyFile);
               fos1.write(privateKey.getEncoded());
               fos1.close();
and then for example>>>
DataInputStream in = new DataInputStream(
          new FileInputStream("publicKeyFile.txt"));
          byte[] encodedPublicKey = new byte[1024];
          in.read(encodedPublicKey);
          in.close();
          X509EncodedKeySpec encodedPublicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
          KeyFactory keyFactory = KeyFactory.getInstance("ECDSA", "FlexiEC");
          publicKey = keyFactory.generatePublic(encodedPublicKeySpec);