C++

Example: Mime.GetDecryptCertInfo method

Demonstrates the GetDecryptCertInfo method. C++

#include <CkMime.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkMime 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) {
        std::cout << mime.lastErrorText() << "\r\n";
        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.
    CkJsonObject json;
    success = mime.GetDecryptCertInfo(json);
    if (success == false) {
        std::cout << mime.lastErrorText() << "\r\n";
        return;
    }

    json.put_EmitCompact(false);
    std::cout << json.emit() << "\r\n";

    //  Sample output:

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

    //  Get each certificate's information like this:
    const char *serial = 0;
    const char *issuerCN = 0;

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