python学习，day5：内置模块（hashlib，加密）

p3.0 ，sha和md5加密都集成到hashlib模块中

# coding=utf-8
# Author: RyAn Bi
import hashlib     #支持加密，sha和md5
m = hashlib.md5()
m.update(b"hello")
print(m.hexdigest())
m.update(b"It's me")   #等同于m2.update(b"helloIt's me")，是前两个的结合
print(m.hexdigest())
m.update(b"it's been a long time since we spoken")
print(m.hexdigest())

m2 =hashlib.md5()
m2.update(b"helloIt's me")
print(m2.hexdigest())

s2 = hashlib.sha1()
s2.update(b"helloIt's me")
print(s2.hexdigest())

import hmac      #消息加密，速度比较快
h=hmac.new("天王盖地虎".encode(encoding='utf-8'),"你是250".encode(encoding='utf-8'))  #前面是key，后面是消息,中文必须要encode
print(h.digest())
print(h.hexdigest())