(C# UWP/WinRT) Encrypt MIME using PEM Certificate

Encrypt MIME using a PEM certificate.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Chilkat.Mime mime = new Chilkat.Mime();

// Create a simple MIME message to be encrypted:
bool success = mime.AddHeaderField("Content-Type","text/plain");
success = mime.AddHeaderField("abc","123");
mime.SetBody("This is a test");

Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Encrypt the MIME.
success = mime.Encrypt(cert);
if (success == false) {
    Debug.WriteLine(mime.LastErrorText);
    return;
}

// Display the MIME:
Debug.WriteLine(mime.GetMime());

// The resulting S/MIME looks like this:

// Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
// abc: 123
// Content-Disposition: attachment; filename="smime.p7m"
// Content-Transfer-Encoding: base64
// 
// MIICMAYJKoZIhvcNAQcDoIICITCCAh0CAQAxggGoMIIBpAIBADCBizB3MQswCQYDVQQGEwJQTDEi
// MCAGA1UEChMZVW5pemV0byBUZWNobm9sb2dpZXMgUy5BLjEnMCUGA1UECxMeQ2VydHVtIENlcnRp
// ZmljYXRpb24gQXV0aG9yaXR5MRswGQYDVQQDExJDZXJ0dW0gTGV2ZWwgSVYgQ0ECEDVuXbie8bb5
// sHeajm5k3ZYwDQYJKoZIhvcNAQEBBQAEggEADNac7gEUOvTWfyqwe0cS+m65Lte7ZmDGRElvqeo7
// C2+JZJfuxl2Roy+4vTovnn+9U2Yf5Kqc1m2ZPCE5Q8ExvOV4M0cTocLNLK6sfCR7cvo1xgf220qf
// XYqWF1/ePuP9j1FrkFvBOoS4BREAnXsEa4zvuhvNPsMfjInK8wWnMftbLUiriAZBq391D+dxxX8M
// kB1EHCWaS3H8WQI/caTnkRS6YdOCOrctJHtotkcU+4gcIxfTcq6yeloceURbesAYAvdRbIGszKCQ
// FA2sC1x8SkDQCHfNUvmyS/fmkq5waFpmq1ksOspInb4ZM7SOjEUu+22vkAgbTmOS3MUdieuRcTBs
// BgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBClRoHLQZyzdHwoZA6pZjLYgEChuMzbQRXOjNF3RpnI
// ZjNTKFDuhaUqk0rRTTn3D89F7ZMUBtoCP0bw+bH5UE9zpDaAgCF9s3W3/D5YNgAuw4AZ