PHP Requires Chilkat v11.0.0+

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. Chilkat2 PHP

<?php

use Chilkat2\JsonObject;
use Chilkat2\PublicKey;
use Chilkat2\StringBuilder;

// Imagine we have this JWK:

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

$sbJwk = new StringBuilder();
try {
    $sbJwk->LoadFile('qa_data/jwk/simple_jwk_rsa.json', 'utf-8');
} catch (\Chilkat2\Exception $e) {
    echo "Failed to load simple JWK file.\n";
    exit;
}

// Loading it into a Chilkat public key object is easy:
$pubkey = new PublicKey();
try {
    $pubkey->LoadFromString($sbJwk->GetAsString());
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Simple JWK loaded into public key object.\n";

// ----------------------------------------------------------------------------------------------------------
// 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"
//           }
// }

$sbJwk2 = new StringBuilder();
try {
    $sbJwk2->LoadFile('qa_data/jwk/contained_jwk_rsa.json', 'utf-8');

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

    $jsonJwk = new JsonObject();
    $json->ObjectOf2('jwk', $jsonJwk);

    $pubkey2 = new PublicKey();
    $pubkey2->LoadFromString($jsonJwk->Emit());
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Contained JWK loaded into public key object.\n";