Java-Encryption

• Java port of GCSE Computer Science Python Coursework AQA.

• About a day's work with some internet problems and optimization.

• Mainly cleaned up repeated code as well as fixing the Advanced Encryption Chunking bug.

• Also adapted so the length of the encryption key can be easily changed later.

• Still uses the same algorithm from the (long gone) spec-sheet though so it isn't really that secure.

• As a side effect, that means it's completely compatible with the Python version.