DH加密通信python实现

DH_Crypto

概况介绍
原理介绍
RSA_sign
Connection.py
DH_Client.py
DH_Server.py
call_DH.py
DH.py(用于Qt界面设计)
结果展示

概况介绍

本次实验实现了DH原理的双机通信。DH_Client和DH_Server的main部分与call_DH部分大同小异，主要是用于本地调试显示，可以忽略。

原理介绍

p,q为公有信息。
1.Alice 选择一个范围在[1, p-1]的随机数，为rand_a
2.Alice 计算cal_a = q^rand_a mod p
3.Bob选择一个范围在[1, p-1]的随机数，为rand_b = 6
4.Bob计算cal_b = q^rand_b mod p
5.Alice和Bob交换cal_a和cal_b
6.Alice计算共享密钥S = cal_b ^rand_a mod p
7.Bob计算共享密钥S = cal_a ^rand_b mod p

RSA_sign

# -*- coding:utf-8 -*-
import rsa
import binascii
import os
#快速模幂运算，模重复平方
def powmod(b,n,m):ans=1while n > 0:if (n & 1) !=0:ans = (ans*b)%mb = (b*b) % mn >>= 1return ans
def bytes_to_int(s):return int.from_bytes(s,byteorder='big',signed=False)
#rsa类
class rsa_crypto():#生成RSA密钥对同时返回公钥def generate_key(self,dir):list=rsa.newkeys(1024)list=str(list)with open(dir, 'w') as f:f.write(list)list=list.split(',')n=str(list[0][11:])pubkey = str(list[1][:-1])return n,pubkey#私钥加密 C=M^d mod ndef rsa_encrypt(self,s,dir):with open(dir, 'r') as f:temp = f.read()ne = temp.split(',')# print("ne",ne)n = int(ne[0][11:])d = int(ne[4])string =binascii.b2a_hex(s.encode())intstr = bytes_to_int(string)cryptot = ("%x"%powmod(intstr,d,n))if len(cryptot)%2 == 1:cryptot = '0'+cryptotreturn binascii.a2b_hex(cryptot)#解密 M=C^d mod ndef rsa_decrypt(self,string,n,e):intstr = bytes_to_int(string)content = ("%x"%powmod(intstr,e,n))if len(content)%2 == 1:content = '0' + contentreturn binascii.a2b_hex(content)

rsa_key内存储生成的密钥，调用python的rsa库

Connection.py

# -*- coding: UTF-8 -*-
from socket import *
#保存client与server通信时的公有量
class connect():#发送连接请求def client(self,C_ip,C_port):# 绑定对象服务器HOST = C_ip#192.168.43.198PORT=C_portADDR = (HOST, PORT)# 面向网络的TCP数据报流global tcpCliSock, tcpSerSocktcpCliSock = socket(AF_INET, SOCK_STREAM)tcpCliSock.connect(ADDR)print("client connects successfully")#服务端等待连接def server(self,S_ip,S_port):HOST = S_ip#192.168.43.100PORT = S_portADDR = (HOST,PORT)global tcpCliSock,tcpSerSocktcpSerSock = socket(AF_INET, SOCK_STREAM)tcpSerSock.bind(ADDR)tcpSerSock.listen(5)tcpCliSock, addr =tcpSerSock.accept()print("server is connected successfully")#发送，报文需提前写好且格式为bytesdef send_data(self,pack):tcpCliSock.send(pack)print("send successfully")#接受报文def getdata(self):while 1:data = tcpCliSock.recv(1024)if data!=b'':print("RECEIEVE", data)#print("flag_get3\n",tcp.flag)return data

DH_Client.py

# -*- coding: UTF-8 -*-
import rsa
import random
import connection
import HASH,DES
import RSA_sign
import binascii
class DH_C:def __init__(self,length=1024):self.length=lengthreturn#得到一个大素数p，从rsa方法内选择，且不与下加密签名内相同def get_prime(self,length):prime=rsa.newkeys(length)[1]string= str(prime).split(',')p = int(string[3][1:])print("p")print(p)return p#生成本原元，但是由于基数过大，所以本实验默认为2def get_generator(self,p):if p == 0:returna = 2while 1:if a ** (p - 1)% p== 1:n = 2mark = 0while n < p - 1:if a ** n % p == 1:mark = 1n += 1if mark == 0:print(a)return aa += 1#得到随机数rand_Adef get_random_a(self,p):rand_A = random.randint(0, p - 1)print("rand_A\n",rand_A)return rand_A#计算Client的cal_Adef cal_A(self,g,random_A,p):cal_A=pow(g,random_A,p)print("cal_A\n",cal_A)return cal_A#进行公有信息打包，利用space分割，便于传输def pre_pack(self, p, g,C_n, C_pubkey):pack = bytes(str(p) + 'space' + str(g) + 'space' + str(C_n) + 'space' +str(C_pubkey) + 'space' + 'hello' + 'space', 'utf-8')return pack#进行加密信息打包，source_C为附加的HASH验证def pack(self, A, source_C):pack = bytes(str(A) + 'space', 'utf-8') + source_Creturn pack#解析Server发来的B，S_Key与对应的两个签名def pre_prase(self, data):string = data.split(b'space')S_pubkey = int(string[0])S_n=int(string[1])message = string[2]print("S_pubkey\n", S_pubkey)print("S_n\n", S_n)print("message\n", message)return S_pubkey,S_n, messagedef data_parse(self,data):string = data.split(b'space')B = int(string[0])source_B=string[1]print("B\n", B)print("source_B\n",source_B)return B,source_B#计算共享密钥def C_get_Key(self,g,A,p):C_Key= pow(g, A, p);print("C_key\n",C_Key)with open('./key/DH_C_key.txt', 'w') as f:f.write(str(C_Key))return C_Key
if __name__ == '__main__':dh_c = DH_C(256)share=connection.connect()hash=HASH.HASH()C=RSA_sign.rsa_crypto()share.client('127.0.0.1',21567)#发送公有的数据p = dh_c.get_prime(dh_c.length)g = 2C_n,C_pubkey=C.generate_key('./key/DH_C_signkey.txt')pack=dh_c.pre_pack(p,g,C_n,C_pubkey)share.send_data(pack)#解析传递的公有数据data=share.getdata()(S_pubkey,S_n,message)=dh_c.pre_prase(data)rand_A = dh_c.get_random_a(p)A = dh_c.cal_A(g, rand_A, p)complete=hash.SHA_1(str(A))source_C=C.rsa_encrypt(complete,'./key/DH_C_signkey.txt')#传输加密后的数据pack=dh_c.pack(A,source_C)share.send_data(pack)#接受并解析加密后的数据data = share.getdata()(B,source_B)=dh_c.data_parse(data)#解密签名并计算获得值的HASH，比对正确说明无丢失来源正确，可计算得到共享密钥complete_B=hash.SHA_1(str(B))cal_source_B=C.rsa_decrypt(source_B,S_n,S_pubkey)cal_source_B= binascii.a2b_hex(cal_source_B).decode()if (complete_B==cal_source_B):C_Key = dh_c.C_get_Key(B, rand_A, p)with open('./key/DH_C_key.txt', 'w') as f:f.write(str(C_Key))#使用商量好的密钥对称加密des=DES.des()des_key=str(C_Key)[0:8]with open('./key/DH_Sec_C.txt', 'w') as f2:f2.write(des_key)des.encryptDes('./input/send_message.txt', './key/DH_Sec_C.txt', './output/des_encrypt_message.txt')

DH_Server.py

# -*- coding: UTF-8 -*-
import random
import connection
import HASH,DES
import RSA_sign
import binascii
class DH_S:def __init__(self):return#得到随机数rand_bdef get_random_b(self,p):rand_B = random.randint(0, p-1)print("rand_B",rand_B)return rand_B#解析公有的信息内容def pre_parse(self, data):string = data.split(b'space')p = int(string[0])g = int(string[1])C_n=int(string[2])C_pubkey=int(string[3])message=string[4]print("p\n", p)print("g\n", g)print("C_n\n",type(C_n),C_n)print("C_pubkey\n", C_pubkey)print("message\n", message)return p, g, C_n,C_pubkey, message#解析含hash的加密信息def data_parse(self, data):string = data.split(b'space')A = int(string[0])signature = string[1]print("A\n", A)print("signature\n", signature)return A, signature#计算B与S_Keydef cal_B(self, g, random_B, p):cal_B = pow(g, random_B, p);print("cal_B", cal_B)return cal_Bdef S_get_Key(self, A, rand_B, p):S_Key = pow(int(A), rand_B, p)print("S_key", S_Key)with open('./key/DH_S_key.txt', 'w') as f:f.write(str(S_Key))return S_Key#打包公有信息def pre_pack(self, S_pubkey,S_n, message):pack = bytes(str(S_pubkey) + 'space'+ str(S_n)+ 'space', 'utf-8') + messagereturn pack#打包加密信息def pack(self,B,source_B):pack =bytes(str(B)+'space','utf-8')+source_Breturn pack
if __name__ == '__main__':share = connection.connect()dh_s = DH_S()hash = HASH.HASH()S = RSA_sign.rsa_crypto()#循环等待实现多次认证while 1:share.server('127.0.0.1',21567)#接受公有信息data=share.getdata()(p, g, C_n,C_pubkey,message) = dh_s.pre_parse(data)S_n,S_pubkey = S.generate_key('./key/DH_S_signkey.txt')pack=dh_s.pre_pack(S_pubkey,S_n,message)share.send_data(pack)#接受加密的信息data = share.getdata()(A,signature)=dh_s.data_parse(data)orgin_source = hash.SHA_1(str(A))complete =S.rsa_decrypt(signature,C_n,C_pubkey)print(complete)cal_source=(binascii.a2b_hex(complete).decode())print("orgin_source\n",orgin_source)#若验证了得到的共享内容正确if cal_source==orgin_source:#发送加密信息print("it is a right pack")rand_B = dh_s.get_random_b(p)B = dh_s.cal_B(g, rand_B, p)S_Key = dh_s.S_get_Key(A, rand_B, p)complete_B = hash.SHA_1(str(B))source_B= S.rsa_encrypt(complete_B,'./key/DH_S_signkey.txt')pack=dh_s.pack(B,source_B)share.send_data(pack)with open('./key/DH_S_key.txt', 'w') as f:f.write(str(S_Key))#利用得到的对称密钥加密des=DES.des()des_key=str(S_Key)[0:8]with open('./key/DH_Sec_S.txt','w') as f2:f2.write(des_key)des.decryptDes('./output/des_encrypt_message.txt','./key/DH_Sec_S.txt', './output/des_decrypt_message.txt')

call_DH.py

# -*- coding: utf-8 -*-
import sys,binascii
import DES,RSA_sign,DH_Client,DH_Server,connection,HASH
from PyQt5.QtWidgets import QApplication, QMainWindow
#导入designer工具生成的login模块
from DH import Ui_MainWindow
class MyMainForm(QMainWindow, Ui_MainWindow):def __init__(self, parent=None):super(MyMainForm, self).__init__(parent)self.setupUi(self)self.button_begin.clicked.connect(self.run_begin)self.button_client.clicked.connect(self.run_button_client)self.button_server.clicked.connect(self.run_button_server)self.button_client_connect.clicked.connect(self.run_button_client_connect)self.button_server_connect.clicked.connect(self.run_button_server_connect)self.button_pre_C_send.clicked.connect(self.run_button_pre_C_send)self.button_pre_S_send.clicked.connect(self.run_button_pre_S_send)self.button_C_send.clicked.connect(self.run_button_C_send)self.button_S_send.clicked.connect(self.run_button_S_send)self.button_S_getkey.clicked.connect(self.run_button_S_getkey)self.button_C_getkey.clicked.connect(self.run_button_C_getkey)self.button_sec_C.clicked.connect(self.run_button_sec_C)self.button_sec_S.clicked.connect(self.run_button_sec_S)def run_begin(self):global share, dh_c, dh_s, hash, C, S, desshare = connection.connect()dh_c = DH_Client.DH_C(48)#控制DH生成密钥的长度，但是有一定误差dh_s = DH_Server.DH_S()hash = HASH.HASH()C = RSA_sign.rsa_crypto()S = RSA_sign.rsa_crypto()des=DES.des()self.show_config.setText("设置成功")def run_button_client(self):self.button_server.setEnabled(False)self.button_S_send.setEnabled(False)self.button_S_getkey.setEnabled(False)self.button_server_connect.setEnabled(False)self.show_S_send.setEnabled(False)self.output_S_key.setEnabled(False)self.output_pre_S_send.setEnabled(False)self.output_sec_S.setEnabled(False)self.button_pre_S_send.setEnabled(False)self.button_sec_S.setEnabled(False)self.label_ip.setText("请输入通信对象IP：")def run_button_server(self):self.button_client.setEnabled(False)self.button_C_send.setEnabled(False)self.button_C_getkey.setEnabled(False)self.button_client_connect.setEnabled(False)self.show_C_send.setEnabled(False)self.output_C_key.setEnabled(False)self.output_pre_C_send.setEnabled(False)self.output_sec_C.setEnabled(False)self.button_pre_C_send.setEnabled(False)self.button_sec_C.setEnabled(False)self.label_ip.setText("请输入本机IP：")def run_button_server_connect(self):ip = self.input_ip.text()port = int(self.input_port.text())share.server(ip, port)self.show_connect.setText("连接成功,为Server端")def run_button_client_connect(self):ip = self.input_ip.text()port = int(self.input_port.text())share.client(ip, port)self.show_connect.setText("连接成功,为Client端")def run_button_pre_C_send(self):global p_A,g_A,C_pubkeyp_A = dh_c.get_prime(512)self.output_pre_C_send.setText("p生成完毕:\n")self.output_pre_C_send.append(str(p_A))g_A = 2self.output_pre_C_send.append("g生成完毕:\n")self.output_pre_C_send.append(str(g_A))C_n, C_pubkey = C.generate_key('./key/DH_C_signkey.txt')self.output_pre_C_send.append("Client端RSA公私钥对生成完毕,输出C_n:\n")self.output_pre_C_send.append(str(C_n))self.output_pre_C_send.append("输出C_pubkey:\n")self.output_pre_C_send.append(str(C_pubkey))pack = dh_c.pre_pack(p_A, g_A, C_n, C_pubkey)self.output_pre_C_send.setText("打包p,g,C_n,C_pubkey完成并发送hello:\n")self.output_pre_C_send.append(str(pack))share.send_data(pack)self.output_pre_C_send.append("发送包成功")def run_button_pre_S_send(self):global C_n,C_pubkey,p_B,g_Bdata = share.getdata()self.output_pre_S_send.setText("接收到包:\n")(p_B, g_B, C_n, C_pubkey, message) = dh_s.pre_parse(data)self.output_pre_S_send.append("获得p:\n")self.output_pre_S_send.append(str(p_B))self.output_pre_S_send.append("获得g:\n")self.output_pre_S_send.append(str(g_B))self.output_pre_S_send.append("获得C_n:\n")self.output_pre_S_send.append(str(C_n))self.output_pre_S_send.append("获得C_pubkey:\n")self.output_pre_S_send.append(str(C_pubkey))S_n, S_pubkey = S.generate_key('./key/DH_S_signkey.txt')self.output_pre_S_send.append("Server端RSA公私钥对生成完毕,输出S_n:\n")self.output_pre_S_send.append(str(S_n))self.output_pre_S_send.append("输出S_pubkey:\n")self.output_pre_S_send.append(str(S_pubkey))pack = dh_s.pre_pack(S_pubkey, S_n, message)self.output_pre_S_send.append("打包S_n,S_pubkey完毕并回复原消息:\n")self.output_pre_S_send.append(str(pack))share.send_data(pack)self.output_pre_S_send.append("包发送完毕\n")def run_button_C_send(self):global rand_A,p_A,S_pubkey,S_ndata = share.getdata()self.show_C_send.setText("接受到包:\n")(S_pubkey, S_n, message) = dh_c.pre_prase(data)self.show_C_send.append("获得S_n:\n")self.show_C_send.append(str(S_n))self.show_C_send.append("获得S_pubkey:\n")self.show_C_send.append(str(S_pubkey))rand_A = dh_c.get_random_a(p_A)self.show_C_send.append("生成随机元rand_A:\n")self.show_C_send.append(str(rand_A))A = dh_c.cal_A(g_A, rand_A, p_A)self.show_C_send.append("计算获得A:\n")self.show_C_send.append(str(A))complete = hash.SHA_1(str(A))self.show_C_send.append("对A生成HASH摘要:\n")self.show_C_send.append(str(complete))source_C = C.rsa_encrypt(complete, './key/DH_C_signkey.txt')self.show_C_send.append("对A的摘要使用Client的私钥进行签名:\n")self.show_C_send.append(str(source_C))pack = dh_c.pack(A, source_C)self.show_C_send.append("打包A与A的数字签名完毕\n")self.show_C_send.append(str(pack))share.send_data(pack)self.show_C_send.append("发送包成功\n")def run_button_S_send(self):global A,rand_Bdata = share.getdata()self.show_S_send.setText("收到包\n")(A, signature_A) = dh_s.data_parse(data)self.show_S_send.append("A:\n")self.show_S_send.append(str(A))self.show_S_send.append("A的数字签名:\n")self.show_S_send.append(str(signature_A))complete_A = hash.SHA_1(str(A))self.show_S_send.append("本地计算A的HASH值为\n")self.show_S_send.append(str(complete_A))source_A = S.rsa_decrypt(signature_A, C_n, C_pubkey)source_A = binascii.a2b_hex(source_A).decode()self.show_S_send.append("使用Server的私钥解签A的HASH值为:\n")self.show_S_send.append(str(source_A))# 若验证了得到的共享内容正确if complete_A == source_A:self.show_S_send.append("A的完整性与来源性验证正确\n")rand_B = dh_s.get_random_b(p_B)self.show_S_send.append("生成随机元rand_B:\n")self.show_S_send.append(str(rand_B))B = dh_s.cal_B(g_B, rand_B, p_B)self.show_S_send.append("根据g,rand_B,p计算得到B\n")self.show_S_send.append(str(B))complete_B = hash.SHA_1(str(B))self.show_S_send.append("对B生成HASH摘要\n")self.show_S_send.append(str(complete_B))source_B = S.rsa_encrypt(complete_B, './key/DH_S_signkey.txt')self.show_S_send.append("对B的摘要使用Server的私钥进行签名\n")self.show_S_send.append(str(source_B))pack = dh_s.pack(B,source_B)self.show_S_send.append("打包B与B的数字签名\n")self.show_S_send.append(str(pack))share.send_data(pack)self.show_S_send.append("发送包成功\n")def run_button_C_getkey(self):data = share.getdata()self.output_C_key.setText("接收到包\n")(B,signature_B) = dh_c.data_parse(data)self.output_C_key.append("B:\n")self.output_C_key.append(str(B))self.output_C_key.append("B的数字签名:\n")self.output_C_key.append(str(signature_B))complete_B = hash.SHA_1(str(B))self.output_C_key.append("B的本地计算HASH为:\n")self.output_C_key.append(str(complete_B))source_B = C.rsa_decrypt(signature_B, S_n, S_pubkey)source_B = binascii.a2b_hex(source_B).decode()self.output_C_key.append("使用Client的公钥解签得B的HASH为:\n")self.output_C_key.append(str(source_B))if (complete_B == source_B):self.output_C_key.append("B的来源性与完整性验证成功:\n")C_Key = dh_c.C_get_Key(B, rand_A, p_A)self.output_C_key.append("根据B，rand_A,p_A计算共享密钥C_Key:\n")self.output_C_key.append(str(C_Key))with open('./key/DH_C_key.txt','w') as f:f.write(str(C_Key))def run_button_S_getkey(self):S_Key = dh_s.S_get_Key(A, rand_B, p_B)self.output_S_key.setText("根据A，rand_B,p_B计算共享密钥S_Key\n")self.output_S_key.append(str(S_Key))with open('./key/DH_S_key.txt', 'w') as f:f.write(str(S_Key))def run_button_sec_C(self):with open('./key/DH_C_key.txt', 'r') as f:C_des_key=f.read()[0:8]with open('./key/DH_Sec_C.txt', 'w') as f2:f2.write(C_des_key)self.output_sec_C.setText("取共享密钥前64位作为DES密钥加密消息")des.encryptDes('./input/send_message.txt', './key/DH_Sec_C.txt', './output/des_encrypt_message.txt')with open('./input/send_message.txt', 'r',encoding='utf-8') as f3:message=f3.read()with open('./output/des_encrypt_message.txt',encoding='utf-8') as f4:encrypto=f4.read()self.output_sec_C.append("明文为；")self.output_sec_C.append(str(message))self.output_sec_C.append("加密成功，密文为；")self.output_sec_C.append(str(encrypto))def run_button_sec_S(self):with open('./key/DH_S_key.txt', 'r') as f:S_des_key=f.read()[0:8]with open('./key/DH_Sec_S.txt', 'w') as f2:f2.write(S_des_key)self.output_sec_S.setText("取共享密钥前64位作为DES密钥解密消息")des.decryptDes('./output/des_encrypt_message.txt', './key/DH_Sec_S.txt', './output/des_decrypt_message.txt')self.output_sec_S.append("解密完成，请查看./output/des_decrypt_message.txt获取解密后信息")with open('./output/des_encrypt_message.txt', 'r',encoding='utf-8') as f3:encrypto=f3.read()with open('./output/des_decrypt_message.txt', 'r',encoding='utf-8') as f4:decrypto=f4.read()self.output_sec_S.append("密文为；")self.output_sec_S.append(str(encrypto))self.output_sec_S.append("解密后消息为；")self.output_sec_S.append(str(decrypto))if __name__ == "__main__":#固定的，PyQt5程序都需要QApplication对象。sys.argv是命令行参数列表，确保程序可以双击运行app = QApplication(sys.argv)#初始化myWin = MyMainForm()#将窗口控件显示在屏幕上myWin.show()#程序运行，sys.exit方法确保程序完整退出。sys.exit(app.exec_())

DH.py(用于Qt界面设计)

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'DH.ui'
#
# Created by: PyQt5 UI code generator 5.13.0
#
# WARNING! All changes made in this file will be lost!from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object):def setupUi(self, MainWindow):MainWindow.setObjectName("MainWindow")MainWindow.resize(1000, 1000)self.centralwidget = QtWidgets.QWidget(MainWindow)self.centralwidget.setObjectName("centralwidget")self.layoutWidget = QtWidgets.QWidget(self.centralwidget)self.layoutWidget.setGeometry(QtCore.QRect(11, 51, 646, 843))self.layoutWidget.setObjectName("layoutWidget")self.gridLayout = QtWidgets.QGridLayout(self.layoutWidget)self.gridLayout.setContentsMargins(0, 0, 0, 0)self.gridLayout.setObjectName("gridLayout")self.button_pre_C_send = QtWidgets.QPushButton(self.layoutWidget)self.button_pre_C_send.setObjectName("button_pre_C_send")self.gridLayout.addWidget(self.button_pre_C_send, 3, 0, 1, 1)self.button_S_send = QtWidgets.QPushButton(self.layoutWidget)self.button_S_send.setObjectName("button_S_send")self.gridLayout.addWidget(self.button_S_send, 4, 2, 1, 1)self.label_port = QtWidgets.QLabel(self.layoutWidget)self.label_port.setAlignment(QtCore.Qt.AlignCenter)self.label_port.setObjectName("label_port")self.gridLayout.addWidget(self.label_port, 2, 2, 1, 1)self.output_pre_C_send = QtWidgets.QTextBrowser(self.layoutWidget)self.output_pre_C_send.setObjectName("output_pre_C_send")self.gridLayout.addWidget(self.output_pre_C_send, 3, 1, 1, 1)self.button_server = QtWidgets.QPushButton(self.layoutWidget)self.button_server.setObjectName("button_server")self.gridLayout.addWidget(self.button_server, 1, 2, 1, 1)self.show_C_send = QtWidgets.QTextBrowser(self.layoutWidget)self.show_C_send.setObjectName("show_C_send")self.gridLayout.addWidget(self.show_C_send, 4, 1, 1, 1)self.button_sec_C = QtWidgets.QPushButton(self.layoutWidget)self.button_sec_C.setObjectName("button_sec_C")self.gridLayout.addWidget(self.button_sec_C, 6, 0, 1, 1)self.button_pre_S_send = QtWidgets.QPushButton(self.layoutWidget)self.button_pre_S_send.setObjectName("button_pre_S_send")self.gridLayout.addWidget(self.button_pre_S_send, 3, 2, 1, 1)self.show_config = QtWidgets.QLabel(self.layoutWidget)self.show_config.setAlignment(QtCore.Qt.AlignCenter)self.show_config.setObjectName("show_config")self.gridLayout.addWidget(self.show_config, 0, 1, 1, 1)self.button_sec_S = QtWidgets.QPushButton(self.layoutWidget)self.button_sec_S.setObjectName("button_sec_S")self.gridLayout.addWidget(self.button_sec_S, 6, 2, 1, 1)self.button_begin = QtWidgets.QPushButton(self.layoutWidget)self.button_begin.setObjectName("button_begin")self.gridLayout.addWidget(self.button_begin, 0, 0, 1, 1)self.button_client = QtWidgets.QPushButton(self.layoutWidget)self.button_client.setObjectName("button_client")self.gridLayout.addWidget(self.button_client, 1, 0, 1, 1)self.output_pre_S_send = QtWidgets.QTextBrowser(self.layoutWidget)self.output_pre_S_send.setObjectName("output_pre_S_send")self.gridLayout.addWidget(self.output_pre_S_send, 3, 4, 1, 1)self.label_connect = QtWidgets.QLabel(self.layoutWidget)self.label_connect.setAlignment(QtCore.Qt.AlignCenter)self.label_connect.setObjectName("label_connect")self.gridLayout.addWidget(self.label_connect, 0, 2, 1, 1)self.label_ip = QtWidgets.QLabel(self.layoutWidget)self.label_ip.setAlignment(QtCore.Qt.AlignCenter)self.label_ip.setObjectName("label_ip")self.gridLayout.addWidget(self.label_ip, 2, 0, 1, 1)self.input_port = QtWidgets.QLineEdit(self.layoutWidget)self.input_port.setObjectName("input_port")self.gridLayout.addWidget(self.input_port, 2, 4, 1, 1)self.output_sec_S = QtWidgets.QTextBrowser(self.layoutWidget)self.output_sec_S.setObjectName("output_sec_S")self.gridLayout.addWidget(self.output_sec_S, 6, 4, 1, 1)self.output_sec_C = QtWidgets.QTextBrowser(self.layoutWidget)self.output_sec_C.setObjectName("output_sec_C")self.gridLayout.addWidget(self.output_sec_C, 6, 1, 1, 1)self.output_S_key = QtWidgets.QTextBrowser(self.layoutWidget)self.output_S_key.setObjectName("output_S_key")self.gridLayout.addWidget(self.output_S_key, 5, 4, 1, 1)self.button_client_connect = QtWidgets.QPushButton(self.layoutWidget)self.button_client_connect.setObjectName("button_client_connect")self.gridLayout.addWidget(self.button_client_connect, 1, 1, 1, 1)self.output_C_key = QtWidgets.QTextBrowser(self.layoutWidget)self.output_C_key.setObjectName("output_C_key")self.gridLayout.addWidget(self.output_C_key, 5, 1, 1, 1)self.button_C_getkey = QtWidgets.QPushButton(self.layoutWidget)self.button_C_getkey.setObjectName("button_C_getkey")self.gridLayout.addWidget(self.button_C_getkey, 5, 0, 1, 1)self.show_S_send = QtWidgets.QTextBrowser(self.layoutWidget)self.show_S_send.setObjectName("show_S_send")self.gridLayout.addWidget(self.show_S_send, 4, 4, 1, 1)self.input_ip = QtWidgets.QLineEdit(self.layoutWidget)self.input_ip.setObjectName("input_ip")self.gridLayout.addWidget(self.input_ip, 2, 1, 1, 1)self.button_C_send = QtWidgets.QPushButton(self.layoutWidget)self.button_C_send.setObjectName("button_C_send")self.gridLayout.addWidget(self.button_C_send, 4, 0, 1, 1)self.button_S_getkey = QtWidgets.QPushButton(self.layoutWidget)self.button_S_getkey.setObjectName("button_S_getkey")self.gridLayout.addWidget(self.button_S_getkey, 5, 2, 1, 1)self.show_connect = QtWidgets.QLabel(self.layoutWidget)self.show_connect.setAlignment(QtCore.Qt.AlignCenter)self.show_connect.setObjectName("show_connect")self.gridLayout.addWidget(self.show_connect, 0, 4, 1, 1)self.button_server_connect = QtWidgets.QPushButton(self.layoutWidget)self.button_server_connect.setObjectName("button_server_connect")self.gridLayout.addWidget(self.button_server_connect, 1, 4, 1, 1)MainWindow.setCentralWidget(self.centralwidget)self.menubar = QtWidgets.QMenuBar(MainWindow)self.menubar.setGeometry(QtCore.QRect(0, 0, 1000, 18))self.menubar.setObjectName("menubar")MainWindow.setMenuBar(self.menubar)self.statusbar = QtWidgets.QStatusBar(MainWindow)self.statusbar.setObjectName("statusbar")MainWindow.setStatusBar(self.statusbar)self.retranslateUi(MainWindow)QtCore.QMetaObject.connectSlotsByName(MainWindow)def retranslateUi(self, MainWindow):_translate = QtCore.QCoreApplication.translateMainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))self.button_pre_C_send.setText(_translate("MainWindow", "通信验证"))self.button_S_send.setText(_translate("MainWindow", "数据发送"))self.label_port.setText(_translate("MainWindow", "Port"))self.button_server.setText(_translate("MainWindow", "Server"))self.button_sec_C.setText(_translate("MainWindow", "保密通信"))self.button_pre_S_send.setText(_translate("MainWindow", "通信验证"))self.show_config.setText(_translate("MainWindow", "statue"))self.button_sec_S.setText(_translate("MainWindow", "保密通信"))self.button_begin.setText(_translate("MainWindow", "初始化配置"))self.button_client.setText(_translate("MainWindow", "Client"))self.label_connect.setText(_translate("MainWindow", "连接状态"))self.label_ip.setText(_translate("MainWindow", "IP："))self.button_client_connect.setText(_translate("MainWindow", "client_connect"))self.button_C_getkey.setText(_translate("MainWindow", "交换密钥生成"))self.button_C_send.setText(_translate("MainWindow", "数据发送"))self.button_S_getkey.setText(_translate("MainWindow", "交换密钥生成"))self.show_connect.setText(_translate("MainWindow", "out_of_connection"))self.button_server_connect.setText(_translate("MainWindow", "server_connect"))

结果展示

可以发现共享密钥生成的部分产生的内容是一样的。下图演示为本地演示，实际可在一个局域网下的不同主机进行结果实现。每次通信都可以重新生成一个新的对称密钥进行通信。

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