I'm working on Twofish encryption and worked on something like the code below.
However, I have been getting the above stated error.
Kindly help look into it and advice as necessary.
SecureRandom sr= new SecureRandom(cipher_key.getBytes());
KeyGenerator kg=KeyGenerator.getInstance("twofish");
kg.init(sr);
SecretKey sk = kg.generateKey();
// create an instance of cipher
Cipher cipher = Cipher.getInstance("twofish");
// initialize the cipher with the key
cipher.init(Cipher.ENCRYPT_MODE, sk);
// enctypt!
encrypted = cipher.doFinal(word.getBytes());