Add S/MIME Signature using PFX

Add a digital signature to a MIME message using the certificate + private key from a PFX file.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <CkMime.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    CkMime mime;

    bool success;
    success = mime.UnlockComponent("Anything for 30-day trial");
    if (success == false) {
        printf("%s\n",mime.lastErrorText());
        return;
    }

    //  Load a PFX file into a certificate object.
    CkCert cert;
    const char * pfxFilepath;
    pfxFilepath = "pfxFiles/something.pfx";
    const char * pfxPassword;
    pfxPassword = "secret";
    success = cert.LoadPfxFile(pfxFilepath,pfxPassword);
    if (success == false) {
        printf("%s\n",cert.lastErrorText());
        return;
    }

    mime.SetBodyFromPlainText("This is the plain-text MIME body.");

    mime.put_Charset("utf-8");
    mime.put_Encoding("quoted-printable");

    //  Sign the MIME:
    success = mime.AddDetachedSignature(cert);
    if (success == false) {
        printf("%s\n",mime.lastErrorText());
        return;
    }

    //  Save the S/MIME to a file.
    success = mime.SaveMime("c:/temp/signedMime.txt");
    if (success == false) {
        printf("%s\n",mime.lastErrorText());
        return;
    }

    printf("success!\n");

    }