(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 <C_CkCert.h>
#include <C_CkPrivateKey.h>
#include <C_CkSshKey.h>
#include <C_CkSFtp.h>

void ChilkatSample(void)
    {
    HCkCert cert;
    const char *pfxFilepath;
    const char *pfxPassword;
    BOOL success;
    HCkPrivateKey privKey;
    const char *privKeyPem;
    HCkSshKey sshKey;
    HCkSFtp sftp;

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

    cert = CkCert_Create();

    pfxFilepath = "qa_data/pfx/my.pfx";
    pfxPassword = "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.
    success = CkCert_LoadPfxFile(cert,pfxFilepath,pfxPassword);
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    // Get the private key.  
    privKey = CkCert_ExportPrivateKey(cert);
    if (CkCert_getLastMethodSuccess(cert) == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    privKeyPem = CkPrivateKey_getPkcs8Pem(privKey);
    if (CkPrivateKey_getLastMethodSuccess(privKey) == FALSE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkCert_Dispose(cert);
        return;
    }

    sshKey = CkSshKey_Create();
    success = CkSshKey_FromOpenSshPrivateKey(sshKey,privKeyPem);
    if (success == FALSE) {
        printf("%s\n",CkSshKey_lastErrorText(sshKey));
        CkCert_Dispose(cert);
        CkSshKey_Dispose(sshKey);
        return;
    }

    // Connect to an SSH/SFTP server
    sftp = CkSFtp_Create();
    success = CkSFtp_Connect(sftp,"sftp.example.com",22);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkCert_Dispose(cert);
        CkSshKey_Dispose(sshKey);
        CkSFtp_Dispose(sftp);
        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 = CkSFtp_AuthenticatePk(sftp,"mySshLogin",sshKey);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkCert_Dispose(cert);
        CkSshKey_Dispose(sshKey);
        CkSFtp_Dispose(sftp);
        return;
    }

    printf("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...


    CkCert_Dispose(cert);
    CkSshKey_Dispose(sshKey);
    CkSFtp_Dispose(sftp);

    }