Node.js

Generate an RSA Key and Get as Base64 DER

See more RSA Examples

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var rsa = new chilkat.Rsa();

    // Generate a 2048-bit key.
    var privKey = new chilkat.PrivateKey();
    success = rsa.GenKey(2048,privKey);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // Get the public part of the key.
    var pubKey = new chilkat.PublicKey();
    privKey.ToPublicKey(pubKey);

    // There are two possible formats for representing the RSA public key 
    // in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
    // We can get either by setting bChoosePkcs1 to true or false.
    var bChoosePkcs1 = true;
    var pubKeyBase64Der = pubKey.GetEncoded(bChoosePkcs1,"base64");
    console.log("Public Key Base64 DER:");
    console.log(pubKeyBase64Der);

    // Get the private key as Base64 DER:
    // We can get PKCS1 or PKCS8, but with different methods:
    var privKeyPkcs1 = privKey.GetPkcs1ENC("base64");
    console.log("Private Key PKCS1 Base64 DER:");
    console.log(privKeyPkcs1);

    var privKeyPkcs8 = privKey.GetPkcs8ENC("base64");
    console.log("Private Key PKCS8 Base64 DER:");
    console.log(privKeyPkcs8);

}

chilkatExample();