(Node.js) Load an Ed25519 Private Key from Hex

Demonstrates how to load an Ed25519 private key from raw hex bytes.

Note: This example requires Chilkat v9.5.0.83 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() {

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

    var privKey = new chilkat.PrivateKey();

    // We have the hexidecimal encoded bytes of the private key and public key:
    var privKeyHex = "d4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842";
    var pubKeyHex = "19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1";

    // Load these values into the Chilkat private key object:
    var success = privKey.LoadEd25519(privKeyHex,pubKeyHex);
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    // ---------------------------------------------------------------
    // We don't actually need the public key.  If we pass an empty string for the public key,
    // Chilkat will automatically compute it.
    var privKey2 = new chilkat.PrivateKey();
    success = privKey2.LoadEd25519(privKeyHex,"");

    // Let's get the public key to see that it computed the same value.
    var sbPubKeyHex = new chilkat.StringBuilder();
    privKeyHex = privKey2.GetRawHex(sbPubKeyHex);
    console.log("computed public key = " + sbPubKeyHex.GetAsString());

    // The output should be:
    // computed public key = 19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1

}

chilkatExample();