A pure-Python implmentation of the AES block cipher algorithm and the common modes of operation (CBC, CFB, CTR, ECB and OFB). Features: - Supports all AES key sizes - Supports all AES common modes - Pure-Python (no external dependancies) - BlockFeeder API allows streams to easily be encrypted and decrypted - Python 2.x and 3.x support (make sure you pass in bytes(), not strings for Python 3)