Unicode C

S/MIME Encrypt using Certificate in Apple Keychain

See more Apple Keychain Examples

Encrypts MIME to creates S/MIME using a certificate found in the Apple Keychain. Unicode C

#include <C_CkCertW.h>
#include <C_CkMimeW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCertW cert;
    HCkMimeW mime;

    success = FALSE;

    cert = CkCertW_Create();

    // Load the certificate by the Subject Common Name
    // On MacOS and iOS, Chilkat will search the Keychain(s) for the matching certificate.
    success = CkCertW_LoadByCommonName(cert,L"My Cert");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkCertW_Dispose(cert);
        return;
    }

    // Note: The private key is not needed for encryption.
    // Only the certificate is needed.

    // Create a simple MIME message to encrypt.
    mime = CkMimeW_Create();
    CkMimeW_AddHeaderField(mime,L"Subject",L"test");
    CkMimeW_AddHeaderField(mime,L"SomeHeader",L"123");
    CkMimeW_AddHeaderField(mime,L"Content-Type",L"text/plain");
    CkMimeW_SetBody(mime,L"This is the body.");

    wprintf(L"%s\n",CkMimeW_getMime(mime));
    wprintf(L"----\n");

    // Here's the MIME to be encrypted:

    // Subject: test
    // SomeHeader: 123
    // Content-Type: text/plain
    // 
    // This is the body.

    // -------------------------------------
    // Encrypt the MIME.
    success = CkMimeW_Encrypt(mime,cert);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkCertW_Dispose(cert);
        CkMimeW_Dispose(mime);
        return;
    }

    // Show the encrypted MIME (S/MIME)
    wprintf(L"%s\n",CkMimeW_getMime(mime));

    // Save the encrypted MIME to a file.
    CkMimeW_SaveMime(mime,L"./encrypted.mime");

    // Here's the S/MIME

    // Subject: test
    // SomeHeader: 123
    // Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
    // Content-Disposition: attachment; filename="smime.p7m"
    // Content-Transfer-Encoding: base64
    // 
    // MIICSwYJKoZIhvcNAQcDoIICPDCCAjgCAQAxggGzMIIBrwIBADCBljCBgTELMAkGA1UEBhMCSVQx
    // EDAOBgNVBAgMB0JlcmdhbW8xGTAXBgNVBAcMEFBvbnRlIFNhbiBQaWV0cm8xFzAVBgNVBAoMDkFj
    // dGFsaXMgUy5wLkEuMSwwKgYDVQQDDCNBY3RhbGlzIENsaWVudCBBdXRoZW50aWNhdGlvbiBDQSBH
    // MwIQPCWvkSv8oQ7xRmEHJ6TzEDANBgkqhkiG9w0BAQEFAASCAQB3VZvHRE5EWxug7Sckpcz1ucDZ
    // YiTKiqmyPt75MhzNRQLtKFx/jWwlemUwnPMzeu6yutCkZ74Bdn7MBsfDqV3bUz43wAu+fRBteGvF
    // mTc00MfY8L7o8dkpj4AqAOCj4hKQzbSE99GvSzyXcPE2Gm5NrOPtKxqfFqbBRTCb4fBZP84LaL+x
    // rnYfrM4qXTppixyN8iFYCd4maEbMu/GA5o+j0BkDDnx42pILDoAGV/ERyx55Y3Nc2Mhm/cITBMNn
    // g7uS9KPrlYizNaqVu09Hi9jg4gdZaRiTjUqg05tSOk/YqIQxTgfscwSPY92/ewpI6e1EHtLt8Q33
    // gWCbERptSntUMHwGCSqGSIb3DQEHATAdBglghkgBZQMEAQIEENm1AxeXlEMx7p6McjHIj5CAUEQj
    // 0GuJ5LnTqiqIjOiwmwNidl1N1TRluxX5vAQvwBuYE6bQK4+i04yn2Av3cucW4kvxgP2Nmni+XgQt
    // aPPKlasaVceEeZ15IYjw77/m3YYn


    CkCertW_Dispose(cert);
    CkMimeW_Dispose(mime);

    }