#!/usr/bin/env python | |
import os, sys, mmap | |
from random import randint | |
CAP = 0x20 | |
RANDADDMAX = 0x20 | |
with open(sys.argv[1], "r+b") as f: | |
map = mmap.mmap(f.fileno(), 0) | |
for index, char in enumerate(map): | |
if ord(char) < CAP: | |
map[index] = chr(ord(char) + randint(0, RANDADDMAX)) | |
map.close() |