Node.js

RSA Signature with Certificate's Private Key from PFX

See more RSA Examples

Demonstrates how to use a certificate's private key from a PFX file to create an RSA signature. 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.

    // Create an instance of a certificate store object, load a PFX file,
    // locate the certificate we need, and use it for signing.
    // (a PFX file may contain more than one certificate.)
    var certStore = new chilkat.CertStore();

    // The 1st argument is the filename, the 2nd arg is the 
    // PFX file's password:
    success = certStore.LoadPfxFile("chilkat.pfx","test");
    if (success == false) {
        console.log(certStore.LastErrorText);
        return;
    }

    // Find the certificate by the subject common name:
    var jsonCN = new chilkat.JsonObject();
    jsonCN.UpdateString("CN","cert common name");

    var cert = new chilkat.Cert();
    success = certStore.FindCert(jsonCN,cert);
    if (success == false) {
        console.log(certStore.LastErrorText);
        return;
    }

    var privKey = new chilkat.PrivateKey();
    success = cert.GetPrivateKey(privKey);
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var rsa = new chilkat.Rsa();

    success = rsa.UsePrivateKey(privKey);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // Encode the signature as a hex string
    rsa.EncodingMode = "hex";

    var strData = "This is the string to be signed.";

    // Sign the string using the sha-1 hash algorithm.
    // Other valid choices are "sha-256", "md2" and "md5".
    var hexSig = rsa.SignStringENC(strData,"sha-1");

    console.log(hexSig);

    console.log("Success!");

}

chilkatExample();