easy_hash

平台   Crypto   已通过

题目作者: ⎝ruimin⎠

一　　血: ‌‌‌‌‌‌‌‌‌‌‬‌‌

一血奖励: 0金币

解　　决: 426

提　　示:

描　　述:

easy_hash

附　　件: 下载

站长题解:

import hashlib
from multiprocessing import Pool
import string

md5_dict = {}

def make_dict():
    for c in string.printable:
        md5_dict[compute_md5(c)] = c

def decrypt_flag():
    lines = open('output', 'r').readlines()
    flag = ''
    for line in lines:
        flag += md5_dict.get(line.strip(), '')
    print(flag)


def compute_md5(char):
    md5_flag = hashlib.md5(char.encode())
    return md5_flag.hexdigest()


def write_flag():
    with open('flag', 'r') as flag_file:
        content = flag_file.read()
        chars = list(content)
        
        with Pool() as pool:
            md5_results = pool.map(compute_md5, chars)
        
        with open('output', 'w') as output_file:
            for result in md5_results:
                output_file.write(result + '\n')


make_dict()
decrypt_flag()

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