Renamed a variable
Implemented a custom AES function as "Rijndael128"
- Built in key derivation at the moment (PBKDF2-HMAC-SHA1)
- Added built-in string encryption/decryption
- All encryption functions compute the results using the underlying mathematical models instead of using tables, simply to demonstrate the inner workings of AES
Simplified some methods for readability and convenience
Removed unnecessary use of BigInteger
Replaced manually (and terribly) calculated Galois field arithmetic with Galois2 methods to make the code simpler and more understandable
