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Secure socket

This is a discussion on Secure socket within the C++ Programming forums, part of the General Programming Boards category; hello everyone, am a novice at programming, i was told to code a client/server interaction, i came up with this ...

  1. #1
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    Post Secure socket

    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

  2. #2
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    you could look into something like openssl or gnutls. otherwise, you could roll your own security with encryption and hashing, using something like cryptopp.

  3. #3
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    secure server

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

  4. #4
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    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.

  5. #5
    spurious conceit MK27's Avatar
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    Quote Originally Posted by danny1 View Post
    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.
    rags_to_riches likes this.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

  6. #6
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    Quote Originally Posted by MK27 View Post
    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.
    MK27 likes this.

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