趣谈HmacSHA1和原生SHA1的区别_hmac sha1

首先来看一段HmacSHA1加密和SHA1加密的代码

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Created on 1/31/18 10:03 AM
@author: Chen Liang
@function: HmacSHA1 vs SHA1
"""

import sys

reload(sys)
sys.setdefaultencoding('utf-8')
import hashlib
import hmac


def sha1(msg):
    """
    sha1加密
    :param msg:
    :return: 长度40位的摘要信息
    """
    sha = hashlib.sha1()
    sha.update(msg)
    return sha.hexdigest()


def hmac_sha1(key, msg):
    """
    hmac sha1加密
    :param key: 密钥
    :param msg: 待加密消息
    :return: 长度40位的摘要信息
    """
    m = hmac.new(key, msg, hashlib.sha1)
    return m.hexdigest()


print hmac_sha1('FKEwTiz9Te0FWlqkS4g8hEdqAsPZfdR4', 'me')
print sha1('me')
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输出结果为

1db0e9132a8dff51e3a4d47497e29a500087da9a
b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8
1

从结果中可以发现，HmacSHA1算法和SHA1算法都