python----RSA非对称加密算法

import rsa 

(publickey,privatekey)=rsa,newkeys(1000)#对数字1000加密得到公钥和私钥
pub = publickey.save_pkcs1()#获取公钥
#将公钥保存到文件*************
filepub = open("public.pem",'w+')
filepub.write(pub.encode('utf-8'))
filepub.close()

pri = privatekey.save_pkcs1()#获取私钥
#将私钥保存到文件***********
filepri = open('private.pem','w+')
filepri.write(pri.encode('utf-8'))
filepri.close()

string = "laomomoblog"#待加密的字符串

#取出公钥
with open('publick.pem','r') as file_pub:
     f_pub = file_pub.read()
     pubkey = rsa.PublicKey.load_pkcs1(f_pub)

#取出私钥
with open('private.pem','r') as file_pri:
     f_pri =file_pri.read()
     prikey = rsa.PrivateKey.load_pkcs1(f_pri)

#加密字符串string

crypt = rsa.encryt(string.encode('utf-8'),pubkey)#使用公钥去加密字符串

#解密
de_crypt = rsa.decrypt(crypt,prikey)#用私钥去解密

#解出来的de_crypt与string应该是相等的，判断一下
assert string，de_crypt