(C++) Use HTTPS Client Certificate from .cer and .key Files

Demonstrates how to load a cert + private key from .cer and .key (base64) files and use it for mutual TLS authentication (client-side certificate).

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#include <CkHttp.h>
#include <CkCert.h>
#include <CkPrivateKey.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;

    CkCert cert;
    CkPrivateKey privKey;

    // Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
    bool success = cert.LoadFromFile("qa_data/certs/sample_cert_a.cer");
    if (success != true) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    // Load the private key.
    CkBinData bd;
    success = bd.LoadFile("qa_data/certs/sample_key_a.key");
    success = privKey.LoadAnyFormat(bd,"privateKeyPasswordIfNecessary");
    if (success != true) {
        std::cout << privKey.lastErrorText() << "\r\n";
        return;
    }

    // Associate the private key with the cert.
    success = cert.SetPrivateKey(privKey);
    if (success != true) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    // Set the certificate to be used for mutual TLS authentication
    // (i.e. sets the client-side certificate for two-way TLS authentication)
    success = http.SetSslClientCert(cert);
    if (success != true) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    // At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
    // connection will automatically use it if the server demands a client-side cert.
    }