MD5截断爆破脚本

最开始自己写的时候忘了多线程了...

import multiprocessing
import hashlib
import random
import string
import sys
CHARS = string.ascii_letters + string.digits
def cmp_md5(substr, stop_event, str_len, start=0, size=20):
    global CHARS
    while not stop_event.is_set():
        rnds = ''.join(random.choice(CHARS) for _ in range(size))
        md5 = hashlib.md5(rnds.encode('utf-8'))
        if md5.hexdigest()[start: start+str_len] == substr:
            print (rnds)
            stop_event.set()
if __name__ == '__main__':
    substr = "c4d038"
    str_len = len(substr)
    cpus = multiprocessing.cpu_count()
    stop_event = multiprocessing.Event()
    processes = [multiprocessing.Process(target=cmp_md5, args=(substr,
                                         stop_event, str_len, 0))
                 for i in range(cpus)]
    for p in processes:
        p.start()
    for p in processes:
        p.join()