Node.js

Load JWK into PublicKey Object

See more JSON Web Signatures (JWS) Examples

Demonstrates how to load a Java Web Key (JWK) into a Chilkat public key object. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  Imagine we have this JWK:

    //  {
    //  "kty":"RSA",
    //  "kid":"bilbo.baggins@hobbiton.example",
    //  "use":"sig",
    //  "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
    //  "e":"65537"
    //  }
    //  

    var sbJwk = new chilkat.StringBuilder();
    success = sbJwk.LoadFile("qa_data/jwk/simple_jwk_rsa.json","utf-8");
    if (success !== true) {
        console.log("Failed to load simple JWK file.");
        return;
    }

    //  Loading it into a Chilkat public key object is easy:
    var pubkey = new chilkat.PublicKey();
    success = pubkey.LoadFromString(sbJwk.GetAsString());
    if (success == false) {
        console.log(pubkey.LastErrorText);
        return;
    }

    console.log("Simple JWK loaded into public key object.");

    //  ----------------------------------------------------------------------------------------------------------
    //  Demonstrate how to load a JWK that is contained within JSON into a public key object.

    //  {
    //    "alg":"RS256",
    //    "jwk":  {
    //            "kty":"RSA",
    //            "kid":"bilbo.baggins@hobbiton.example",
    //            "use":"sig",
    //            "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
    //            "e":"65537"
    //            }
    //  }

    var sbJwk2 = new chilkat.StringBuilder();
    success = sbJwk2.LoadFile("qa_data/jwk/contained_jwk_rsa.json","utf-8");
    if (success == false) {
        console.log(sbJwk2.LastErrorText);
        return;
    }

    //  Get the "jwk" part of the JSON..
    var json = new chilkat.JsonObject();
    json.Load(sbJwk2.GetAsString());

    var jsonJwk = new chilkat.JsonObject();
    success = json.ObjectOf2("jwk",jsonJwk);
    if (success == false) {
        console.log(json.LastErrorText);
        return;
    }

    var pubkey2 = new chilkat.PublicKey();
    success = pubkey2.LoadFromString(jsonJwk.Emit());
    if (success == false) {
        console.log(pubkey2.LastErrorText);
        return;
    }

    console.log("Contained JWK loaded into public key object.");

}

chilkatExample();