String key = "just a bunch of text";
byte[] bytes = new byte[256];
byte[] kbytes = key.getBytes();
for (int i = 0; i < bytes.length; i++) {
   if (i < kbytes.length) {
     bytes[i] = kbytes[i];
   } else {
     bytes[i] = (byte) i;
   }
}
byte[] md5digest = md5DigestAsBytes(bytes);
try {
   theGeneratedKey = Twofish_Algorithm.makeKey(md5digest);
   blockSize = Twofish_Algorithm.blockSize();
   catch (java.security.InvalidKeyException ike) {
     throw new Exception(Exception.E_SECURITY, "Invalid security key '" + new String(md5digest) + "'", ike);
   }