(Node.js) RSA Encrypt with Modulus and Exponent

Demonstrates how to RSA encrypt with a given modulus and exponent.

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 rsa = new chilkat.Rsa();

    // Assuming you already have a base64 modulus and exponent,
    // wrap it in XML like this:
    var modulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM=";
    var exponent = "AQAB";

    var xml = new chilkat.Xml();
    xml.Tag = "RSAPublicKey";
    xml.NewChild2("Modulus",modulus);
    xml.NewChild2("Exponent",exponent);

    // Encrypt with the public key.
    var publicKey = xml.GetXml();
    var success = rsa.ImportPublicKey(publicKey);

    var usePrivateKey = false;
    var plainText = "message in a bottle";

    rsa.EncodingMode = "base64";
    var encryptedStrBase64 = rsa.EncryptStringENC(plainText,usePrivateKey);
    console.log(encryptedStrBase64);

}

chilkatExample();