(Unicode 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 <C_CkHttpW.h>
#include <C_CkCertW.h>
#include <C_CkPrivateKeyW.h>
#include <C_CkBinDataW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    HCkCertW cert;
    HCkPrivateKeyW privKey;
    BOOL success;
    HCkBinDataW bd;

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

    http = CkHttpW_Create();

    cert = CkCertW_Create();
    privKey = CkPrivateKeyW_Create();

    // Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
    success = CkCertW_LoadFromFile(cert,L"qa_data/certs/sample_cert_a.cer");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    // Load the private key.
    bd = CkBinDataW_Create();
    success = CkBinDataW_LoadFile(bd,L"qa_data/certs/sample_key_a.key");
    success = CkPrivateKeyW_LoadAnyFormat(privKey,bd,L"privateKeyPasswordIfNecessary");
    if (success != TRUE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        CkBinDataW_Dispose(bd);
        return;
    }

    // Associate the private key with the cert.
    success = CkCertW_SetPrivateKey(cert,privKey);
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        CkBinDataW_Dispose(bd);
        return;
    }

    // Set the certificate to be used for mutual TLS authentication
    // (i.e. sets the client-side certificate for two-way TLS authentication)
    success = CkHttpW_SetSslClientCert(http,cert);
    if (success != TRUE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkPrivateKeyW_Dispose(privKey);
        CkBinDataW_Dispose(bd);
        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.


    CkHttpW_Dispose(http);
    CkCertW_Dispose(cert);
    CkPrivateKeyW_Dispose(privKey);
    CkBinDataW_Dispose(bd);

    }