JavaScript

Set Cert and Private Key for S/MIME Decryption

Demonstrates the Chilkat Imap.SetDecryptCert2 method, which specifies a certificate together with a separately supplied private key for decrypting S/MIME messages. The first argument is the Cert and the second is the PrivateKey. This example loads the certificate and key from separate files.

Note: The certificate path is relative to the application's current working directory. Supply the path to your own certificate file.

Background: Sometimes the certificate (the public part) and the private key are stored separately — a .cer alongside a PEM key file, for instance. This method pairs them explicitly, whereas SetDecryptCert expects a single Cert that already provides its private key. After the pairing, subsequently downloaded S/MIME messages are decrypted automatically.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

//  Demonstrates the Imap.SetDecryptCert2 method, which specifies a certificate together with a
//  separately supplied private key for decrypting S/MIME messages.  The 1st argument is the
//  Cert and the 2nd is the PrivateKey.

var imap = new CkImap();

imap.Ssl = true;
imap.Port = 993;

success = imap.Connect("imap.example.com");
if (success == false) {
    console.log(imap.LastErrorText);
    return;
}

success = imap.Login("user@example.com","myPassword");
if (success == false) {
    console.log(imap.LastErrorText);
    return;
}

//  Load the certificate and its private key from separate files.
var cert = new CkCert();
success = cert.LoadFromFile("qa_data/smime.cer");
if (success == false) {
    console.log(cert.LastErrorText);
    return;
}

var privKey = new CkPrivateKey();
success = privKey.LoadPemFile("qa_data/smime_privkey.pem");
if (success == false) {
    console.log(privKey.LastErrorText);
    return;
}

//  Use the cert and key to automatically decrypt subsequently downloaded S/MIME messages.
success = imap.SetDecryptCert2(cert,privKey);
if (success == false) {
    console.log(imap.LastErrorText);
    return;
}

success = imap.Disconnect();
if (success == false) {
    console.log(imap.LastErrorText);
    return;
}