JavaScript

Export an Encrypted PKCS #8 Private Key as Encoded Text

Demonstrates the Chilkat PrivateKey.GetPkcs8EncryptedENC method, which exports the key as password-protected PKCS #8 DER and encodes the encrypted DER as text. The first argument names the binary encoding and the second is the password. The cipher is selected by Pkcs8EncryptAlg.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This combines encryption with text encoding: the key is protected by a passphrase and returned as a string, ideal for storing an encrypted key in a text-only medium such as JSON or an environment variable. It is the encrypted counterpart to GetPkcs8ENC. Source the password securely.

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;

//  Load a private key to export.
var privKey = new CkPrivateKey();
success = privKey.LoadPemFile("qa_data/private.pem");
if (success == false) {
    console.log(privKey.LastErrorText);
    return;
}

//  The key password is not hard-coded in a real application; obtain it from an interactive
//  prompt, environment variable, or a secrets vault.
var password = "myKeyPassword";

//  Export as password-protected PKCS #8 DER, then encode the encrypted DER as text.  The 1st
//  argument names the binary encoding and the 2nd is the password.  The cipher is selected by the
//  Pkcs8EncryptAlg property.
var encoded = privKey.GetPkcs8EncryptedENC("base64",password);
if (privKey.LastMethodSuccess == false) {
    console.log(privKey.LastErrorText);
    return;
}

console.log(encoded);