AES encrypt library

[ckupen]

An API for AES encryption

Have stream encryption with Output feedback mode (OFB)

Link: <https://gist.github.com/zyxkad/a5e02d16d244b20b026ecfb06f662210>

[ckupen]

Usage:

```lua
os.loadAPI('aes.lua')

key = string.rep('0', 16) -- A 16 bytes key, DO NOT use repeat bytes if you want safety
cipher = aes.Cipher:new(nil, key)
sec = cipher:encrypt("Hello world") -- data can be any length

data = cipher:decrypt(sec) -- Be careful, each decrypt must match a encrypt, you cannot jump off any data
print('data is:', data)

```

[sigma-octantis]

Usage:

```lua
os.loadAPI('aes.lua')

key = string.rep('0', 16) -- A 16 bytes key, DO NOT use repeat bytes if you want safety
cipher = aes.Cipher:new(nil, key)
sec = cipher:encrypt("Hello world") -- data can be any length

data = cipher:decrypt(sec) -- Be careful, each decrypt must match a encrypt, you cannot jump off any data
print('data is:', data)

```

Looks cool! I would change two things tho (They're very simple), return a table and use

Code Select Expand

require(), and maybe the gist link (If you click, appears broken at first).
(Basically os.loadAPI is deprecated)

But with that tweaks, I'll probably use it on my server!

Nice work