(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_CkHttp.h>
#include <C_CkCert.h>
#include <C_CkPrivateKey.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    HCkCert cert;
    HCkPrivateKey privKey;
    BOOL success;
    HCkBinData bd;

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

    http = CkHttp_Create();

    cert = CkCert_Create();
    privKey = CkPrivateKey_Create();

    // Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
    success = CkCert_LoadFromFile(cert,"qa_data/certs/sample_cert_a.cer");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkHttp_Dispose(http);
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    // Load the private key.
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/certs/sample_key_a.key");
    success = CkPrivateKey_LoadAnyFormat(privKey,bd,"privateKeyPasswordIfNecessary");
    if (success != TRUE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkHttp_Dispose(http);
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkBinData_Dispose(bd);
        return;
    }

    // Associate the private key with the cert.
    success = CkCert_SetPrivateKey(cert,privKey);
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkHttp_Dispose(http);
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkBinData_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 = CkHttp_SetSslClientCert(http,cert);
    if (success != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkBinData_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.


    CkHttp_Dispose(http);
    CkCert_Dispose(cert);
    CkPrivateKey_Dispose(privKey);
    CkBinData_Dispose(bd);

    }