An obfuscated RC4 keystream generator, made for AppFog OpenStack Birthday Contest

rc4.py

#!/usr/bin/env python

__copyright__ = "Copyright (C) 2012 Bo Zhu http://zhuzhu.org"


def ARC4(OOO4):
    """A fully functional RC4 keystream generator"""
    O400,O4O0,O40O,O4OO=range(0400),0000,0000,0000
    for OO04 in range(0400):O4O0=(O4O0+O400[OO04]+OOO4[OO04%len(OOO4)])%0400;O400[O4O0],O400[OO04]=O400[OO04],O400[O4O0]
    while-1:O40O=(O40O+0001)%0400;O4OO=(O4OO+O400[O40O])%0400;O400[O40O],O400[O4OO]=O400[O4OO],O400[O40O];yield O400[(O400[O40O]+O400[O4OO])%0400]


from flask import Flask, make_response
application = app = Flask('wsgi')


@app.route('/')
def index():
    g = ARC4([0004])
    d = (0xa9, 0x46, 0x44, 0x7f, 0x06, 0x24, 0xed, 0xae,
         0xbb, 0x1f, 0xe0, 0x99, 0x37, 0x1f, 0x84, 0x69,
         0x46, 0xe9, 0xb9, 0xbe, 0xe7, 0x28, 0x06, 0x05)
    text = ''.join(chr(g.next() ^ i) for i in d)
    resp = make_response(text)
    resp.headers['Content-Type'] = 'text/plain'
    return resp


@app.route('/src')
def source():
    with open('wsgi.py') as f:
        text = f.read()
    resp = make_response(text)
    resp.headers['Content-Type'] = 'text/plain'
    return resp


if __name__ == '__main__':
    app.run(debug=True)