JavaScript

RSA Encrypt with Modulus and Exponent

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

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;

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

var rsa = new CkRsa();

// 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 CkXml();
xml.Tag = "RSAPublicKey";
xml.NewChild2("Modulus",modulus);
xml.NewChild2("Exponent",exponent);

var pubKey = new CkPublicKey();
success = pubKey.LoadFromString(xml);
if (success == false) {
    console.log(pubKey.LastErrorText);
    return;
}

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

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

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