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資源簡介

本程序在UDP傳輸情況下使用DES對固定字符串進行加密傳輸，（字符串可以自行修改程序進行手動輸入）

資源截圖

代碼片段和文件信息 

//--------------------------------------------------------------------//
//????????????????作者：劉文濤????????????????????????????????????????//
//????????????????書籍：《網絡安全編程技術與實例》????????????????????//
//--------------------------------------------------------------------//
#include?
#include?
#include“des.h“
#pragma?comment（?lib?“ws2_32.lib“?）??
#define?BUFFERSIZE?32
void?main（）
{???
????CDesOperate?cDes;
????char?strEncryBuffer[BUFFERSIZE];
????int?nLen=BUFFERSIZE;
????char?*pKey=“1234“;
????
????WSADATA?wsaData;
????SOCKET?ClientSocket;
????SOCKADDR_IN?ServerAddr;
????int?ServerPort?=?52659;
????char?*SendBuffer?=?“Hello?World!“;
????char?ReceiveBuffer[1024]?=?““;
????int?Result;
????if?（（Result?=?WSAStartup（MAKEWORD（2?2）?&wsaData））?!=?0）
????{
????????printf（“WSAStartup?failed?with?error?%d\n“?Result）;
????????return?;
????}
????ClientSocket?=?socket（AF_INET?SOCK_DGRAM?IPPROTO_UDP）;
????if?（ClientSocket?????{
????????printf（“socket?failed?with?error?%d\n“?WSAGetLastError（））;
????????return?;
????}
????ServerAddr.sin_family?=?AF_INET;
????ServerAddr.sin_port?=?htons（ServerPort）;
????ServerAddr.sin_addr.s_addr?=?inet_addr（“127.0.0.1“）;
????int?len;
????cDes.Encry（SendBufferstrlen（SendBuffer）strEncryBuffernLenpKey8）;//加密語句
????if?（len?=sendto（ClientSocket?strEncryBufferstrlen（strEncryBuffer）0（SOCKADDR*）&ServerAddrsizeof（ServerAddr））<0）//發送
????{
????????printf（“sendto?failed?with?error?%d\n“?WSAGetLastError（））;
????????return?;
????}
????else
????{
????????printf（“Send?the?data:%s\n“?SendBuffer）;
		printf（“數據加密后發送，data:%s\n“strEncryBuffer）;//經過加密的“hello?world”updclient端的數據顯示

????}
????int?FromAddrSize?=?sizeof（ServerAddr）;
????memset（ReceiveBuffer?0?sizeof（ReceiveBuffer））;
????memset（&ServerAddr?0?sizeof（ServerAddr））;
	cDes.Encry（SendBufferstrlen（SendBuffer）strEncryBuffernLenpKey8）;
????if?（len?=?recvfrom（ClientSocket?ReceiveBuffer?1024?0?（SOCKADDR*）?&ServerAddr?&FromAddrSize）?????{
????????printf（“recvfrom?failed?with?error?%d\n“?WSAGetLastError（））;
????????return?;
????}
????else
????{
????????printf（“Received?Data:%s?From?:%s\n“?ReceiveBuffer?inet_ntoa（ServerAddr.sin_addr））;
????}
????if?（closesocket（ClientSocket）?==?SOCKET_ERROR）
????{
????????printf（“closesocket?failed?with?error?%d\n“?WSAGetLastError（））;
????}
????if?（WSACleanup（）?==?SOCKET_ERROR）
????{
????????printf（“WSACleanup?failed?with?error?%d\n“?WSAGetLastError（））;
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????49152??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\debug\udpclient.exe

?????文件?????344136??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\debug\udpclient.ilk

?????文件?????379904??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\debug\udpclient.pdb

?????文件???????2567??2014-05-29?11:51??UDP+DES加密+socket編程\udpclient\udpclient\client.cpp

?????文件???????9990??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\BuildLog.htm

?????文件??????40001??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\client.obj

?????文件?????????65??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\mt.dep

?????文件????????403??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\udpclient.exe.embed.manifest

?????文件????????468??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\udpclient.exe.embed.manifest.res

?????文件????????385??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\udpclient.exe.intermediate.manifest

?????文件?????306176??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\vc80.idb

?????文件??????86016??2014-05-29?11:55??UDP+DES加密+socket編程\udpclient\udpclient\Debug\vc80.pdb

?????文件??????13775??2014-05-29?11:07??UDP+DES加密+socket編程\udpclient\udpclient\des.h

?????文件???????4031??2014-05-29?11:07??UDP+DES加密+socket編程\udpclient\udpclient\udpclient.vcproj

?????文件???????1427??2014-05-29?13:25??UDP+DES加密+socket編程\udpclient\udpclient\udpclient.vcproj.DADI-20140419ZF.hongai.user

?????文件????6712320??2014-05-29?13:25??UDP+DES加密+socket編程\udpclient\udpclient.ncb

?????文件????????892??2014-05-29?11:05??UDP+DES加密+socket編程\udpclient\udpclient.sln

????..A..H.??????8704??2014-05-29?13:25??UDP+DES加密+socket編程\udpclient\udpclient.suo

?????文件??????49152??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\debug\udpservice.exe

?????文件?????341192??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\debug\udpservice.ilk

?????文件?????379904??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\debug\udpservice.pdb

?????文件???????9666??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\BuildLog.htm

?????文件?????????65??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\mt.dep

?????文件??????39634??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\sevice.obj

?????文件????????403??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\udpservice.exe.embed.manifest

?????文件????????468??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\udpservice.exe.embed.manifest.res

?????文件????????385??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\udpservice.exe.intermediate.manifest

?????文件?????306176??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\vc80.idb

?????文件??????86016??2014-05-29?11:54??UDP+DES加密+socket編程\udpservice\udpservice\Debug\vc80.pdb

?????文件??????13775??2014-05-29?11:02??UDP+DES加密+socket編程\udpservice\udpservice\des.h

............此處省略18個文件信息

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