Python 中的加密模块 hashlib 和 base64

目录

• hashlib模块介绍
• hashlib模块中的常用方法
• base64模块介绍
• base64模块的常用方法

hashlib介绍

• 难破解
• 不可逆

hashlib模块中的常用方法

• 生成加密字符串:

hashobj = hashlib.md5(b’hello’)
result = hashobj. hexdigest()
print(result)
>> '6b8bfd346d1dcc17e6940aa59b9c4fa6864064a8'

实战

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time     : 2021/8/23 21:40
# @Author   : InsaneLoafer
# @File     : package_hashlib.py

import hashlib
import time

base_sign = 'insane'
def custom():
    a_timestamp = int(time.time())
    _token = '%s%s' % (base_sign, a_timestamp)
    hashobj = hashlib.sha1(_token.encode('utf-8'))
    a_token = hashobj.hexdigest()  # 生成16进制加密串
    return a_token, a_timestamp

def b_service_check(token, timestamp):
    _token = '%s%s' % (base_sign, timestamp)
    b_token = hashlib.sha1(_token.encode('utf-8')).hexdigest()
    if token == b_token:
        return True
    else:
        return False

if __name__ == '__main__':
    need_help_token, timestamp = custom()
    result = b_service_check(need_help_token, timestamp)
    if result == True:
        print('a合法，b服务可以进行帮助')
    else:
        print('a不合法，b不可进行帮助')

a合法，b服务可以进行帮助

Process finished with exit code 0

base64包介绍

• 通用型
• 可解密

base64常用方法

实战

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time     : 2021/8/23 21:57
# @Author   : InsaneLoafer
# @File     : package_base64.py
import base64

repalce_one = '%'
repalce_two = '$'

def encode(data):
    if isinstance(data, str):
        data = data.encode('utf-8')
    elif isinstance(data, bytes):
        data = data
    else:
        raise TypeError('data need bytes or str')

    _data = base64.encodebytes(data).decode('utf-8')
    print(_data)
    _data = _data.replace('a', repalce_one).replace('8', repalce_two)
    return _data



def decode(data):
    if not isinstance(data, bytes):
        raise TypeError('data need to be bytes')

    repalce_one_b = repalce_one.encode('utf-8')
    repalce_two_b = repalce_two.encode('utf-8')
    data = data.replace(repalce_one_b, b'a').replace(repalce_two_b, b'8')
    return base64.decodebytes(data).decode('utf-8')


if __name__ == '__main__':
    result = encode('123hello')
    print(result)
    new_result = decode(result.encode('utf-8'))
    print(new_result)

MTIzaGVsbG8=

MTIz%GVsbG$=

123hello

Process finished with exit code 0