(Node.js) Example: Mime.GetDecryptCertInfo method

Demonstrates the GetDecryptCertInfo method.

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

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var success = false;

    var 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) {
        console.log(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.
    var json = new chilkat.JsonObject();
    success = mime.GetDecryptCertInfo(json);
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    json.EmitCompact = false;
    console.log(json.Emit());

    // Sample output:

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

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

    var i = 0;
    var 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;
    }


}

chilkatExample();