anon_win_fail_detect.py

# coding=utf-8

import os
import zlib
import hashlib
def md5(fname):
    hash_md5 = hashlib.md5()
    with open(fname, "rb") as f:
        for chunk in iter(lambda: f.read(4096), b""):
            hash_md5.update(chunk)
    return hash_md5.hexdigest()

md5map = {}
md5winarray = []
md5failarray = []

print("Reading novells...")
for file in os.listdir("./"):
	if str.lower(file).endswith(".zip") or str.lower(file).endswith(".rar") or str.lower(file).endswith(".exe"):
		file_hash = md5("./"+file)
		md5winarray.append(file_hash)
		md5failarray.append(file_hash)
		print(file + ": " + file_hash)
		md5map[file_hash] = file

print("Calculating ratings of "+ str(len(md5winarray)) +" novells...")
md5winarray = sorted(md5winarray, key=str.lower, reverse=False)
md5winhash = ",".join(md5winarray)
md5wincrc = zlib.crc32(md5winhash)
win_index = md5wincrc%len(md5winarray)
win_md5 = md5winarray[win_index]

md5failarray = sorted(md5winarray, key=str.lower, reverse=True)
md5failhash = ",".join(md5failarray)
md5failcrc = zlib.crc32(md5failhash)
fail_index = md5failcrc%len(md5failarray)
fail_md5 = md5failarray[fail_index]

print("Done! Contest results:")
print("Anon-win: hash="+win_md5+", file="+md5map[win_md5])
print("Anon-fail: hash="+fail_md5+", file="+md5map[fail_md5])