python使用rsa加密解密字符串

#!/usr/bin/env python
# encoding: utf-8
'''
@author: wk
@contact: [e-mail]
@file: rsa.py
@time: 2019/11/22 15:18
@desc:
pip install pycryptodomex
'''
import binascii
from Cryptodome.PublicKey import RSA
from Cryptodome.Cipher import PKCS1_v1_5

class RsaCrypto():
    def create_rsa_key(self):
        '''生成RSA秘钥对'''
        try:
            key = RSA.generate(2048)
            encrypted_key = key.exportKey(pkcs=8)

            public_key = key.publickey().exportKey().decode('utf-8')
            private_key = encrypted_key.decode('utf-8')

            return {'state': "success", 'message': {'public_key': public_key, 'private_key': private_key}}
        except Exception as err:
            return {'state': "fail", 'message': str(err)}

    def encrypt(self, public_key, plaintext):
        '''加密方法'''
        try:
            recipient_key = RSA.import_key(public_key)
            cipher_rsa = PKCS1_v1_5.new(recipient_key)

            en_data = cipher_rsa.encrypt(plaintext.encode('utf-8'))
            hex_data = binascii.hexlify(en_data).decode('utf-8')

            return {'state': "success", 'message': hex_data}
        except Exception as err:
            return {'state': 0, 'message': str(err)}

    def decrypt(self, private_key, hex_data):
        '''解密方法'''
        try:
            private_key = RSA.import_key(private_key)
            cipher_rsa = PKCS1_v1_5.new(private_key)

            en_data = binascii.unhexlify(hex_data.encode('utf-8'))
            data = cipher_rsa.decrypt(en_data, None).decode('utf-8')

            return {'state': "success", 'message': data}
        except Exception as err:
            return {'state': "fail", 'message': str(err)}


if __name__ == '__main__':
    r1 = RsaCrypto()


    with open("D:/id_rsa","r",encoding="utf-8") as f:
        line_list=f.readlines()
        private_key="".join(line_list)


    with open("D:/id_rsa.pub","r",encoding="utf-8") as f:
        line_list=f.readlines()
        public_key="".join(line_list)

    enstr=r1.encrypt(public_key,"123.wukang.com")['message']    #使用公钥加密
    print(enstr)        #加密后的串

    print(r1.decrypt(r1.private_key, enstr)['message']) #使用私钥解密