(Node.js) RSA OAEP Padding

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding.

Note: This example requires Chilkat v11.0.0 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() {

    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();

    // RSA public key in XML format:
    var pubKeyXml = "<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>";

    var pubKey = new chilkat.PublicKey();
    success = pubKey.LoadFromString(pubKeyXml);
    if (success == false) {
        console.log(pubKey.LastErrorText);
        return;
    }

    success = rsa.UsePublicKey(pubKey);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // To use Optimal Asymmetric Encryption Padding (OAEP) padding,
    // simply set the PkcsPadding property to false
    rsa.PkcsPadding = false;

    // Encrypt a string and return the encrypted data base64-encoded:
    rsa.EncodingMode = "base64";

    var plainText = "RSA Encryption should be easy.";

    var usePrivateKey = false;
    var encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey);
    console.log(encryptedStr);

}

chilkatExample();