Python3.7基于hashlib和Crypto实现加签验签功能(实例代码)

环境：

Python3.7

依赖库：

import datetime
import random
import requests
import hashlib
import json
import base64
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
from Crypto.Cipher import AES

加签：

def sign(signflag,keypath,baseRequest):
#http请求body
 print(baseRequest)
 #加签标志
 if not signflag: return baseRequest
 else:
  #取请求体中的业务数据
   businessdata = json.dumps(baseRequest["data"])
   #读取私钥（.key格式，可使用openssl或java.keytools产生）
   with open(keypath,'r') as rsaKeyFile:
     rsaKey = rsaKeyFile.read().replace("\n",'')
     print(rsaKey)
   rsaKeyBytes = base64.b64decode(rsaKey)
   print(rsaKeyBytes)
   #SHA256摘要，RSA加密
   priKey = RSA.importKey(rsaKeyBytes)
   signer = PKCS1_v1_5.new(priKey)
   hash_obj = SHA256.new(business_data.encode('utf-8'))
   signature = base64.b64encode(signer.sign(hash_obj))
   print(signature)
   #把签名加进请求体并返回
   baseRequest['sign'] = signature.decode()
   print(baseRequest)
   return baseRequest

验签：

def validata(signflag,cerpath,res):
 if not signflag: return res
 else:
  #取业务数据和签名
   data = res['data']
   sign = res['sign']
   #此处cer已转换成pem格式，使用openssl工具
   #openssl x509 -inform der -pubkey -noout -in xxxxx.cer>xxxxx.pem
   cert = open(cerpath).read().replace("-----BEGIN PUBLIC KEY-----\n","").replace("-----END PUBLIC KEY-----\n","").replace("\n","")
   print(cert)
#验签逻辑同加签
   pubBytes = base64.b64decode(cert)
   pubKey = RSA.importKey(pubBytes)
   signer = SHA256.new(json.dumps(data).encode("utf-8"))
   verifier = PKCS1_v1_5.new(pubKey)
   return verifier.verify(signer,base64.b64decode(sign))

总结

以上所述是小编给大家介绍的Python3.7基于hashlib和Crypto实现加签验签功能网站的支持！
如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！

来源：https://blog.csdn.net/weixin_43886252/article/details/103344462