C#

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. C#

bool success = false;

// Imagine we have this JWK:

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

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

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

Debug.WriteLine("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"
//           }
// }

Chilkat.StringBuilder sbJwk2 = new Chilkat.StringBuilder();
success = sbJwk2.LoadFile("qa_data/jwk/contained_jwk_rsa.json","utf-8");
if (success == false) {
    Debug.WriteLine(sbJwk2.LastErrorText);
    return;
}

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

Chilkat.JsonObject jsonJwk = new Chilkat.JsonObject();
success = json.ObjectOf2("jwk",jsonJwk);
if (success == false) {
    Debug.WriteLine(json.LastErrorText);
    return;
}

Chilkat.PublicKey pubkey2 = new Chilkat.PublicKey();
success = pubkey2.LoadFromString(jsonJwk.Emit());
if (success == false) {
    Debug.WriteLine(pubkey2.LastErrorText);
    return;
}

Debug.WriteLine("Contained JWK loaded into public key object.");