(Unicode C++) SFTP use Cert's Private Key from PFX (.pfx/.p12)

Demonstrates how to use the private key associated with a certificate from a .pfx/.p12 file.

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#include <CkCertW.h>
#include <CkPrivateKeyW.h>
#include <CkSshKeyW.h>
#include <CkSFtpW.h>

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

    CkCertW cert;

    const wchar_t *pfxFilepath = L"qa_data/pfx/my.pfx";
    const wchar_t *pfxPassword = L"secret";

    // A PFX typically contains certificates in the chain of authentication.
    // The Chilkat cert object will choose the certificate w/
    // private key farthest from the root authority cert.
    // To access all the certificates in a PFX, use the 
    // Chilkat certificate store object instead.
    bool success = cert.LoadPfxFile(pfxFilepath,pfxPassword);
    if (success != true) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    // Get the private key.  
    CkPrivateKeyW *privKey = cert.ExportPrivateKey();
    if (cert.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    const wchar_t *privKeyPem = privKey->getPkcs8Pem();
    if (privKey->get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",privKey->lastErrorText());
        return;
    }

    CkSshKeyW sshKey;
    success = sshKey.FromOpenSshPrivateKey(privKeyPem);
    if (success == false) {
        wprintf(L"%s\n",sshKey.lastErrorText());
        return;
    }

    // Connect to an SSH/SFTP server
    CkSFtpW sftp;
    success = sftp.Connect(L"sftp.example.com",22);
    if (success == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    // Authenticate with the SSH server using a username + private key.
    // (The private key serves as the password.  The username identifies
    // the SSH user account on the server.)
    success = sftp.AuthenticatePk(L"mySshLogin",sshKey);
    if (success == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    wprintf(L"OK, the connection and authentication with the SSH server is completed.\n");

    // This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...
    }