#!/usr/bin/env python
# coding=utf-8
__author__ = 'Luzhuo'
__date__ = '2017/5/19'
# hash_demo.py Hash加密相關(guān)(安全哈希)
# 支持: MD5, SHA1 SHA224 SHA256 SHA384 SHA512


import hashlib


def hash_demo():
  m = hashlib.md5()
  m.update(b"hello")
  m.update(b"world!") # = hello + world!

  hash_hex = hashlib.sha3_512(b"luzhuo.me").hexdigest()

  print(m.digest_size)
  print(m.digest()) # 二進(jìn)制hash
  print(m.hexdigest()) # 十六進(jìn)制hash
  print(hash_hex)

  # 加鹽加密
  hash_bytes = hashlib.pbkdf2_hmac('sha256', b'luzhuo.me', b'80', 100000)
  print(hash_bytes)

 

def hash_func():
  # hashlib.new(name[, data]) // 創(chuàng)建hashlib(非首選), name=算法名, data:數(shù)據(jù)
  hash = hashlib.new('ripemd160', b'luzhuo.me')

  # 常量
  dics = hashlib.algorithms_guaranteed # 所有平臺(tái)支持的hash算法的名稱(chēng)
  dics = hashlib.algorithms_available # 在Python解析器中可用的hash算法的名稱(chēng), 傳遞給new()時(shí), 可識(shí)別

  # hashlib.pbkdf2_hmac(hash_name, password, salt, iterations, dklen=None) // 加鹽加密 hash_name:hash名稱(chēng), password:數(shù)據(jù), salt:鹽, iterations:循環(huán)次數(shù), dklen:密鑰長(zhǎng)度
  hash_bytes = hashlib.pbkdf2_hmac('sha256', b'luzhuo.me', b'80', 100000)

  # hash對(duì)象
  num = hash.digest_size # hash結(jié)果的大小
  num = hash.block_size # hash算法的內(nèi)部塊的大小
  strs = hash.name # hash名稱(chēng), 可傳給new()使用
  hash.update(b"data") # 字節(jié)緩沖區(qū) hash.update(a) hash.update(b) == hash.update(a+b)
  hash_bytes = hash.digest() # 字節(jié)hash
  hash_str = hash.hexdigest() # 16進(jìn)制字符串hash
  hash = hash.copy() # 拷貝hash對(duì)象副本

 

if __name__ == "__main__":
  hash_demo()

  # hash_func()

#!/usr/bin/env python
# coding=utf-8
__author__ = 'Luzhuo'
__date__ = '2017/5/19'
# hmac_demo.py HMAC算法
# 與hashlib不同之處在于多了key

import hmac


def hmac_demo():
  # 加密
  h = hmac.new(b"net")
  h.update(b"luzhuo.me")
  h_str = h.hexdigest()
  print(h_str)

  # 比較密碼
  boolean = hmac.compare_digest(h_str, hmac.new(b"net", b"luzhuo.me").hexdigest())
  print(boolean)

 

def hmac_func():
  # 創(chuàng)建key和內(nèi)容,再都進(jìn)行加密
  # hmac.new(key, msg=None, digestmod=None) // 創(chuàng)建新的hmac對(duì)象, key:鍵, msg:update(msg), digestmod:hash名稱(chēng)(同hashlib.new())(默認(rèn)md5)
  hc = hmac.new(b"key")

  # hmac對(duì)象
  hc.update(b"msg") # 字節(jié)緩沖區(qū) hc.update(a) hc.update(b) == hc.update(a+b)
  hash_bytes = hc.digest() # 字節(jié)hash
  hash_str = hc.hexdigest() # 16進(jìn)制hash字符串
  hc = hc.copy() # 拷貝hmac副本
  num = hc.digest_size # hash大小
  num = hc.block_size # hash算法內(nèi)部塊大小
  strs = hc.name # hash名稱(chēng)
  # hmac.compare_digest(a, b) // 比較兩個(gè)hash密鑰是否相同, 參數(shù)可為: str / bytes-like object, (注:建議使用,不建議使用a==b)
  boolean = hmac.compare_digest(hmac.new(b"net", b"luzhuo.me").digest(), hmac.new(b"net", b"luzhuo.me").digest())

 


if __name__ == "__main__":
  hmac_demo()

  # hmac_func()