Java Security

Hi, I am trying to implement the Symmetric Key Agreement example from the Java Security book by Scott Oaks. However, when I try to execute the following piece of code, I get an Algorithm not found exception.

SecretKeyFactory skf = SecretKeyFactory.getInstance("Rijndael");

Can someone please tell me why? Also, is there a RijndaelKeySpec Class?

Note: I have added the appropriate provider to the java.security file and can execute the following piece of code with no problems.

KeyGenerator kg = KeyGenerator.getInstance("Rijndael");


Thanks in advance for all your help!!