tilfin/jwt-jwk

JWT-JWK

An example verifying a JWT issued at a server in a browser

Generate RSA Key

$ openssl genrsa -out jwk.pem 4096
$ openssl rsa -in jwk.pem -RSAPublicKey_out -out jwk-public.pem

Prepare

$ npm install jsonwebtoken rasha

issue a JWT with Node.js

$ node issue.js jwk.pem '{"foo":"bar"}'

make a JWK cert key with Node.js

$ node pem2jwk.js jwk-public.pem

Verify JWT in a browser

importing verify-in-browser.js

const jwkCertKey = {
  "kty": "RSA",
  "n": "xxxxxxxxxxxx",
  "e": "AQAB"
};

const jwt = 'xxxxxxxxxxxxx.xxxxxxxxxxx.xxxxxxxxxxxxxxxxx';

await verifyJWT(jwt, jwkCertKey);

Success result

{ "foo":"bar", iat: 1602000000, exp: 1613000000 }