(C#) Example: Mime.GetDecryptCertInfo method

Demonstrates the GetDecryptCertInfo method.

Note: This example requires Chilkat v11.4.0 or greater.

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bool success = false;

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

// Load MIME that is has Content-Type like this:
// Content-Type: application/pkcs7-mime; smime-type="enveloped-data"; name="smime.p7m"; smime-type="enveloped-data"
success = mime.LoadMimeFile("qa_data/mime/enveloped_data.eml");
if (success == false) {
    Debug.WriteLine(mime.LastErrorText);
    return;
}

// Get information about the certificate that would be needed to decrypt.
// An enveloped-data can potentially be decrypted by multiple certificates if it was encrypted in a way that allows it,
// but in most cases, only a single certificate with associated private key (that of the message recipient) is possible.
Chilkat.JsonObject json = new Chilkat.JsonObject();
success = mime.GetDecryptCertInfo(json);
if (success == false) {
    Debug.WriteLine(mime.LastErrorText);
    return;
}

json.EmitCompact = false;
Debug.WriteLine(json.Emit());

// Sample output:

// {
//   "recipientInfo": [
//     {
//       "serial": "****",
//       "issuerCN": "****"
//     }
//   ]
// }

// Get each certificate's information like this:
string serial;
string issuerCN;

int i = 0;
int count = json.SizeOfArray("recipientInfo");
while (i < count) {
    json.I = i;
    serial = json.StringOf("recipientInfo[i].serial");
    issuerCN = json.StringOf("recipientInfo[i].issuerCN");
    i = i + 1;
}