Python加密模块的hashlib,hmac模块使用解析

import hashlib
import time
 
m = hashlib.md5()
 
api_key = ''
api_secret = ''
 
params = {'api_key':api_key, 'time':int(time.time()), 'symbol':'btclcny'}
 
def sign( data , secret ):
  signStr = ""
  keys = data.keys()
  keys = sorted(keys)
  for key in keys:
    signStr = signStr + key
    signStr = signStr + bytes(data[key])
    pass
  signStr += secret
  m.update(signStr)
  return m.hexdigest()
 
print sign( params , api_secret )

'''初始化对象'''
h1 = hashlib.md5()
h2 = hashlib.new('md5')
h3 = hashlib.md5()
h1.update(b'123')  # 进行摘要
h2.update('123'.encode())
h3.update(b'1')
h3.update(b'23')
print(h1.hexdigest())  # 取值
print(h2.hexdigest())
print(h3.hexdigest())

202cb962ac59075b964b07152d234b70<br data-filtered="filtered">202cb962ac59075b964b07152d234b70<br data-filtered="filtered">202cb962ac59075b964b07152d234b70

add_word = b'haha'     # 把这个当做加密盐，
 
hh1 = hashlib.md5()
hh1.update(add_word + b'jiujiu')
print(hh1.hexdigest())
 
hh2 = hashlib.md5()
hh2.update( b'jiujiu' + add_word)
print(hh2.hexdigest())
 
m = hmac.new(add_word) # 这个跟hashlib的写法有点类似，默认是md5加密
m.update(b'jiujiu')
print(m.hexdigest())
h_md5 = hmac.new(add_word, b'jiujiu').hexdigest() # 这是另外一种方式，直接加密后取值。
h_sha1 = hmac.new(add_word, b'jiujiu', 'sha1').hexdigest()
h_sha224 = hmac.new(add_word, b'jiujiu', 'sha224').hexdigest()
h_sha256 = hmac.new(add_word, b'jiujiu', 'sha256').hexdigest()
h_sha512 = hmac.new(add_word, b'jiujiu', 'sha512').hexdigest()
 
print(h_md5, len(h_md5), sep='======>num')
print(h_sha1, len(h_sha1), sep='======>num')  # 通过输出可以看出，md5输出32个16进制数字，一共128位
print(h_sha224, len(h_sha224), sep='======>num')  # sha1输出40个数字，所以为160位，剩下的sha后面的数字就代表输出几位。
print(h_sha256, len(h_sha256), sep='======>num')
print(h_sha512, len(h_sha512), sep='======>num')

3e289c523f955430bce2e47a14d4934b
eb01e09a1fe2bfd95d8f31c8ae544faf
ef84bc9ee2bf91d1789227d82193d7a9
ef84bc9ee2bf91d1789227d82193d7a9======>num32
fbd95ddafdac6352cdf3d9d4e8c6d2421c80e56c======>num40
60d1896d00e73bc67469a58b39ded91c60c162eda0f44306f7d08d58======>num56
b36f8977bba6265612bc338b89c698d17cff7ccfb81b7d7a434f0ad889995e26======>num64
043f51bd410f9d328ca0ab0913ddfde9c2519f639c74447a1516811b8920b125aa6f4d3977c83e038e82c39103ac2a3bbdd5235c9c95fc030a267cdf0d578696======>num128