3.31作业

把登录与注册的密码都换成密文形式

def login():
    ipt_name = input('请输入帐号:').strip()
    ipt_pwd = input('请输入密码:').strip()
    pwd_hash = hashlib.md5(ipt_pwd.encode('utf-8'))
    with open('db.txt','rt',encoding='utf-8') as f:
        for i in f:
            if [ipt_name,pwd_hash.hexdigest()] == i.strip('
').split(':'):
                print('login succ')
                break
        else:
            print('输入账号或者密码错误')

def register():
    ipt_account = input('Enter your account:')
    ipt_pwd = input('Enter your password:')
    with open('db.txt','at',encoding='utf-8') as f:
        pwd_hash = hashlib.md5(ipt_pwd.encode('utf-8'))
        f.write(f'{ipt_account}:{pwd_hash.hexdigest()}
')
    login()

register()

　　

文件完整性校验（考虑大文件）

import hashlib
import os
import random
def check_file(file1,file2):
    m1 = hashlib.md5()
    m2 = hashlib.md5()
    lis = []
    file_size = os.path.getsize(file1)
    with open(file1,'rb') as f,
            open(file2,'rb') as g:
        for i in range(10):
            lis.append(random.randint(0,file_size-20))
        for i in lis:
            f.seek(i)
            g.seek(i)
            dataf = f.read(20)
            m1.update(dataf)
            datag = g.read(20)
            m2.update(datag)
    file1_hash = m1.hexdigest()
    file2_hash = m2.hexdigest()
    print(file1_hash == file2_hash)

check_file('3.31day笔记.md','3.31day笔记_download.md')

　　

注册功能改用json实现

import hashlib,json

def register():
    ipt_name = input('请输入用户名:').strip()
    ipt_pwd = input('请输入密码:').strip()
    with open('db.txt','at',encoding='utf-8') as f:
        pwd_hash = hashlib.md5(ipt_pwd.encode('utf-8'))
        register_info = {
            'name':ipt_name,
            'password':pwd_hash.hexdigest(),
            'account_type':'user'
        }
        json.dump(f"{ipt_name}:{register_info}",f)
        f.write('
')

register()

项目的配置文件采用configparser进行解析