C++

Socket TLS Mutual Authentication (Client-Side Certificate)

See more Socket/SSL/TLS Examples

This example demonstrates how to provide a client-side certificate, also known as "two-way authentication" or "mutual authentication" for servers that require a client certificate. C++

#include <CkSocket.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkSocket sock;

    //  Set the certificate to be used for mutual TLS authentication
    //  (i.e. sets the client-side certificate for two-way TLS authentication)
    success = sock.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword");
    if (success != true) {
        std::cout << sock.lastErrorText() << "\r\n";
        return;
    }

    //  Note: The certificate used for the client-side of TLS mutual authentication
    //  must have the associated private key available. (.pfx/.p12 files typically store both
    //  the certificate and associated private key.)

    //  Establish the connection using the socket object (with client certificate authentication).
    bool bTls = true;
    int port = 443;
    int maxWaitMs = 5000;
    success = sock.Connect("www.example.com",port,bTls,maxWaitMs);
    if (success != true) {
        std::cout << "Connect Failure Error Code: " << sock.get_ConnectFailReason() << "\r\n";
        std::cout << sock.lastErrorText() << "\r\n";
        return;
    }

    //  At this point, the Socket object is connected and authenticated using the client-side cert

    //  ...
    //  ...
    }