Node.js

RSA Encrypt Randomly Generated AES Key

See more RSA Examples

Demonstrates how to RSA encrypt a randomly generated AES key. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    // First generate a 256-bit AES key (32 bytes).
    var prng = new chilkat.Prng();
    var bdAesKey = new chilkat.BinData();
    success = prng.GenRandomBd(32,bdAesKey);

    // Use a public key from a certificate for RSA encryption.
    var cert = new chilkat.Cert();

    success = cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var pubKey = new chilkat.PublicKey();
    cert.GetPublicKey(pubKey);

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

    // RSA encrypt our 32-byte AES key.
    // The contents of bdAesKey are replaced with result of the RSA encryption.
    success = rsa.EncryptBd(bdAesKey,false);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // Return the result as a base64 string
    var encryptedAesKey = bdAesKey.GetEncoded("base64");

    console.log("encrypted AES key = " + encryptedAesKey);

}

chilkatExample();