Decrypt Blowfish in Java (Generating a secret key in program)

My professor gave us a decryption assignment in which we were given a list of "encrypted" phrases and told to decrypt them. One of them is in blowfish. Me and one of my classmates have tried all the possible keys that he might use. Thus I was going to make a program in Java that would go through all possible keys decrypt the string and then write the decrypted message out to a file. Only problem is all the online tutorials that i can find开发者_运维技巧 on writing blowfish in Java have this interface SecretKey being read in from a file.

My question is how do you generate a SecretKey in a program?

This might help you:

byte[] key = getKey();
Cipher cipher = Cipher.getInstance("Blowfish");
SecretKeySpec keySpec = new SecretKeySpec(key, "Blowfish");
cipher.init(Cipher.DECRYPT_MODE, keySpec);

Here's the API you want to use. http://download.oracle.com/javase/6/docs/api/javax/crypto/spec/SecretKeySpec.html#SecretKeySpec%28byte%5b%5d,%20java.lang.String%29

Use a SecretKeySpec to generate a SecretKey using SecretKeyFactory.generate().