验证客户端的合法性

服务端server.py

import os
import socket
import hashlib


def get_md5(key, seq):
    md5_obj = hashlib.md5(key)
    md5_obj.update(seq)
    res = md5_obj.hexdigest()
    return res


tcp_server = socket.socket()
tcp_server.bind(("127.0.0.1", 5060))
tcp_server.listen()

secret_key = b'saiya6'
rand_seq = os.urandom(32)
md5code = get_md5(secret_key, rand_seq)

conn, addr = tcp_server.accept()
conn.send(rand_seq)

ret = conn.recv(32).decode('utf-8')

if ret == md5code:
    print("合法客户端")
else:
    print("非法客户端")

conn.close()
tcp_server.close()

客户端client.py

import socket
import hashlib


def get_md5(key, seq):
    md5_obj = hashlib.md5(key)
    md5_obj.update(seq)
    res = md5_obj.hexdigest()
    return res


tcp_client = socket.socket()
tcp_client.connect(('127.0.0.1', 5060))

secret_key = b'saiya6'
rand_seq = tcp_client.recv(32)
md5code = get_md5(secret_key, rand_seq)
tcp_client.send(md5code.encode('utf-8'))

tcp_client.close()