Secure socket

[danny1]

hello everyone, am a novice at programming, i was told to code a client/server interaction, i came up with this but i need to secure it so that when a client connects, instead of showing "YourMessage", it is suppose to show something elseMain.cppclnt.hmain.cppwind.h

[Elkvis]

you could look into something like openssl or gnutls. otherwise, you could roll your own security with encryption and hashing, using something like cryptopp.

[danny1]

Thank you, though what am looking for is a small code to insert into this code:

server:

#include "wind.h"

using namespace std;

//begi
void main()
{

    long answer ;
    WSAData wsaData;
    WORD DLLVERSION;
    DLLVERSION = MAKEWORD(2,1);

    answer = WSAStartup(DLLVERSION, &wsaData);

    SOCKADDR_IN addr;
    int addrlen = sizeof(addr);

 SOCKET slisten;
 SOCKET  sConnect;

 sConnect = socket(AF_INET,SOCK_STREAM,NULL);

 addr.sin_addr.s_addr = inet_addr("127.0.0.1");
 addr.sin_family = AF_INET;

 addr.sin_port = htons(1234);

 slisten = socket(AF_INET,SOCK_STREAM,NULL);

 bind(slisten, (SOCKADDR*)&addr, sizeof(addr));
 // unlimited clients
 listen(slisten, SOMAXCONN);

 //conditions
 for(;;)



      {
cout <<"waiting for client" <<endl;
if (sConnect = accept(slisten,(SOCKADDR*)&addr, &addrlen))
      {
          cout<<" A connection was found" <<endl;

           answer = send(sConnect,       "YourMessage", 12 ,NULL);

      }

 }
}

client:

#include "clnt.h"

using namespace std;

void main ()
{
 string confirm;
 char message[200];
  string strmessage;

long answer;
WSAData wsaData;
WORD DLLVersion;
DLLVersion = MAKEWORD(2,1);
answer = WSAStartup(DLLVersion, &wsaData);



SOCKADDR_IN addr;
 int addrlen = sizeof(addr);

  SOCKET sconnect;

  sconnect = socket(AF_INET,      SOCK_STREAM,NULL);

  addr.sin_addr.s_addr = inet_addr("127.0.0.1");

  addr.sin_family = AF_INET;

  addr.sin_port = htons(1234);


cout <<" Do you want to connect to your server?[Y/N]" <<endl;
cin>> confirm;
if(confirm == "N")
{
      exit(1);
    }
       else
    {
        if(confirm == "Y")
        {
           connect(sconnect,     (SOCKADDR*)&addr, sizeof(addr));
          answer = recv(sconnect, message, sizeof(message), NULL);
          strmessage = message;
          cout << strmessage <<endl;
          getchar();
        }

     }

getchar();
}

[Elkvis]

it's not that simple. there is no standard, OS-integrated method for security of low level sockets. your best bet is to use openssl or one of the wrappers that exist for it, like boost::asio. you will need to do this on both the server and the client.

[MK27]

Thank you, though what am looking for is a small code to insert into this code:

That's what I'd like a lot of the time too. "I'd like some small code to insert to create a GUI front-end for my database", "I'd like some small code to insert to facilitate concurrency for various aspects of this process", etc. Guess what? I usually don't get what I'd like

If you go with SSL, you'll also have to create a self-signed SSL certificate for the server.

[Elkvis]

If you go with SSL, you'll also have to create a self-signed SSL certificate for the server.

or get one from a registered certification authority for free from here.