Set the Signing Certificate for an Email

See more Email Object Examples

Demonstrates the Chilkat Email.SetSigningCert method, which sets the certificate (with access to its private key) used to create a digital signature when sending signed email. This example loads the signing certificate from a PFX, sets it, and enables signed sending.

#include <C_CkEmail.h>
#include <C_CkCert.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmail email;
    HCkCert cert;

    success = FALSE;

    //  Demonstrates the SetSigningCert method, which sets the certificate (with access to its
    //  private key) used for creating a digital signature when sending signed email.

    email = CkEmail_Create();
    CkEmail_putSubject(email,"Signed email");
    CkEmail_putBody(email,"This message will be sent with a digital signature.");
    CkEmail_putFrom(email,"alice@example.com");
    CkEmail_AddTo(email,"Bob","bob@example.com");

    //  Load a signing certificate together with its private key from a PFX file.
    cert = CkCert_Create();
    success = CkCert_LoadPfxFile(cert,"qa_data/certs/signer.pfx","pfx_password");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkEmail_Dispose(email);
        CkCert_Dispose(cert);
        return;
    }

    //  Set the certificate used to create the signature.
    success = CkEmail_SetSigningCert(email,cert);
    if (success == FALSE) {
        printf("%s\n",CkEmail_lastErrorText(email));
        CkEmail_Dispose(email);
        CkCert_Dispose(cert);
        return;
    }

    //  Request that the email be sent with a digital signature.
    CkEmail_putSendSigned(email,TRUE);

    printf("Signing certificate set.\n");

    //  Note: The path "qa_data/certs/signer.pfx" is a relative local filesystem path,
    //  relative to the current working directory of the running application.


    CkEmail_Dispose(email);
    CkCert_Dispose(cert);

    }