hashlib模块 & base64模块

hashlib模块 --用来进行hash或者md5加密(包括md5、sha1、sha224、sha256、sha512等)

基本用法：

#!/usr/bin/python3
# -*- conding:utf-8 -*-
import hashlib

# 字符串计算md5值
test = 'Hello World!'
m = hashlib.md5()
m.update(test.encode('utf-8'))
print(m.hexdigest())

# 文件计算sha1值
filename = 'config.ini'
sha1 = hashlib.sha1()
with open(filename,'rb') as f:
    while True:
        block = f.read(4096)
        if not block:
            break
        sha1.update(block)
print(sha1.hexdigest())

执行结果：
ed076287532e86365e841e92bfc50d8c
daf82fd4d5cb2c5a8662edf0cbf250bf1041f87c

---

加密算法中添加自定义key再来做加密(防止撞库)

#!/usr/bin/python3
# -*- conding:utf-8 -*-
import hashlib

test = 'Hello World!'
key = 'X8643'
sha256 = hashlib.sha256(key.encode('utf-8'))
sha256.update(test.encode('utf-8'))
print(sha256.hexdigest())

---

base64模块 --base64编码解码

#!/usr/bin/python3
# -*- config:utf-8 -*

import base64

test = 'Hello World!'
# 编码
test1 = base64.b64encode(test.encode('utf-8'))
print(test1.decode())

# 解码
test2 = base64.b64decode(test1)
print(test2.decode())

执行结果
SGVsbG8gV29ybGQh
Hello World!