jwt-variations.txt

==================================
RS256 - generateKeyPairSync("rsa", {"modulusLength":4096})
==================================

"Web-standard" variation (1734 bytes):

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"JWK-in-payload" variation (2053 bytes):

eyJhbGciOiJSUzI1NiJ9.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.gIF7CZbjbljUEr-4VgWGiGN6yXGylI8dHrET3f0x4WSfxdnLPaZnmrqD3TU5iM4XX6cF-YBqKA9m-A8MZyq82TASy1-wC-z_Yp2K3EpTO6_B1a50Kn-DR18xS8NSnqsS86Np8qMiZVeT2H_ToY9j5C24DytZjug5PTmKqrdNURdLgHObEsRvoZGHeXVdC40JQBJgpR9cpAuzRjV_E33_Bssc15TYVDzwUMiZhVljtQKNH2bl5dNUgsRQWrqrpbrajQJ8g5oNYAb6QJ1C2rHQfyC3zLIkLiEQ4M6jlXHnX5ZkjU1eufDyrJq-HWmuyEbIiQNBA8PNpA0aEkYNSz4p3iqHWnxZDBx7tLcrw5uWjxh-39AhGV_ElyyMBpKp8UgsFOR-uayv27CfdofONKpfBlFuV7c1DLpTGyiUWqp8PZX716P488w29n0LXLmQqywUrYc_gq1KQ8hxNdLmIhpa1Xe-ImrlR-1990icUVJ0jovALvKZ86oFUZIBtb24hc0jr-ev3ydgU-wKDNm6LOdrfDkZxjRwMLGriqsJLAKoiL5OzHNIpHRbietwjyUZncMpiUTNxxsVmqx5CXdTuCpJqkEOfdzhZrd--1aUsOUlfI-scVPIiYOZE0Qflco4AdZNG1f3pMAzpv1_Q-kCInQA4V6GxeWe3vo9nSDee9UBfKY

==================================
ES256 - generateKeyPairSync("ec", {"namedCurve":"P-256"})
==================================

"Web-standard" variation (353 bytes):

eyJhbGciOiJFUzI1NiIsImp3ayI6eyJrdHkiOiJFQyIsIngiOiJzdFBvREdYNW93SjhZM0ZYUkd6eWYwY2Vpa2FPSWpKalp5T0VFU1MycTRnIiwieSI6IkJXMFk1X3FsYkxjN3lSWFNNOVMxUFh1bzFoNDc5Tk4tb0RJQW5obHR4bFkiLCJjcnYiOiJQLTI1NiJ9fQ.eyJwbGF5YmFja0lkIjoiYjBkY3h2d21sNDhteHQycyIsImV4cCI6MTY2Mzc3Mzg4Mn0.ewFfWj0MaL6nVuL08ERevUtqyoIST2imyqvez0Nq38kOcq3NoLeZucxS6QQQVrznxvQLO4pTXFKNZmTwn-PMLA

"JWK-in-payload" variation (411 bytes):

eyJhbGciOiJFUzI1NiJ9.eyJwbGF5YmFja0lkIjoiYjBkY3h2d21sNDhteHQycyIsImp3ayI6ImV5SnJkSGtpT2lKRlF5SXNJbmdpT2lKemRGQnZSRWRZTlc5M1NqaFpNMFpZVWtkNmVXWXdZMlZwYTJGUFNXcEthbHA1VDBWRlUxTXljVFJuSWl3aWVTSTZJa0pYTUZrMVgzRnNZa3hqTjNsU1dGTk5PVk14VUZoMWJ6Rm9ORGM1VGs0dGIwUkpRVzVvYkhSNGJGa2lMQ0pqY25ZaU9pSlFMVEkxTmlKOSIsImV4cCI6MTY2Mzc3Mzg4Mn0.h3Vvkz-MMvPHBCAn_RunOMFk-AJrEPUy7bBGoiBbQddSziSqK-IfHeuhriKRiwNGF9O_uNL6o1fzCGLgkA-0NQ

==================================
EdDSA - generateKeyPairSync("ed25519", {})
==================================

"Web-standard" variation (290 bytes):

eyJhbGciOiJFZERTQSIsImp3ayI6eyJjcnYiOiJFZDI1NTE5IiwieCI6IkNLbEQxc3pLZWFDWnEwMnVjRUZtT0pjNWdUZkhaUndja0tqaWFVazBBWTAiLCJrdHkiOiJPS1AifX0.eyJwbGF5YmFja0lkIjoiYjBkY3h2d21sNDhteHQycyIsImV4cCI6MTY2Mzc3Mzg4Mn0.e0Ku-Gw3NlrNSBFrINAzX5wI5cvkOBGxrZmBkYWWaYpe0Pbf0UFrImUjFOYctpsz5G_duG056T4sZSXt6kWxAA

"JWK-in-payload" variation (331 bytes):

eyJhbGciOiJFZERTQSJ9.eyJwbGF5YmFja0lkIjoiYjBkY3h2d21sNDhteHQycyIsImp3ayI6ImV5SmpjbllpT2lKRlpESTFOVEU1SWl3aWVDSTZJa05MYkVReGMzcExaV0ZEV25Fd01uVmpSVVp0VDBwak5XZFVaa2hhVW5kamEwdHFhV0ZWYXpCQldUQWlMQ0pyZEhraU9pSlBTMUFpZlE9PSIsImV4cCI6MTY2Mzc3Mzg4Mn0.i-tLImyXum9badvRYVQ2-NVwLoMm4L-P_jD-5HQ-pa9r5Mv8-nUCY2NVjlWrTFHi8wbMy3x87_8mjL881Kh0AA

jwt.mjs

import { SignJWT } from "jose";
import { generateKeyPairSync } from "crypto";
const algos = [
  { alg: "RS256", keypair: "rsa", opts: { modulusLength: 4096 } },
  { alg: "ES256", keypair: "ec", opts: { namedCurve: "P-256" } },
  { alg: "EdDSA", keypair: "ed25519", opts: {} },
];

const generate = async (alg, keypair, opts = {}) => {
  console.log("");
  console.log(`==================================`);
  console.log(
    `${alg} - generateKeyPairSync("${keypair}", ${JSON.stringify(opts)})`
  );
  console.log(`==================================`);
  // const { publicKey, privateKey } = generateKeyPairSync("ed25519");
  // const { publicKey, privateKey } = generateKeyPairSync("rsa", {
  //   modulusLength: 4096,
  // });
  const { publicKey, privateKey } = generateKeyPairSync(keypair, opts);
  const jwk = publicKey.export({ format: "jwk", type: "spki" });
  // console.log(privateKey.export({ format: "pem", type: "pkcs8" }));

  let data = JSON.stringify(jwk);
  let buff = new Buffer.from(data);
  let base64data = buff.toString("base64");

  const header = { alg };
  const payload = {
    playbackId: "b0dcxvwml48mxt2s",
  };

  const jwt1 = await new SignJWT(payload)
    .setProtectedHeader({ ...header, jwk })
    .setExpirationTime("2h")
    .sign(privateKey);

  const jwt2 = await new SignJWT({ ...payload, jwk: base64data })
    .setProtectedHeader({ ...header })
    .setExpirationTime("2h")
    .sign(privateKey);

  console.log(`\n"Web-standard" variation (${jwt1.length} bytes):`);
  console.log("");
  console.log(jwt1);
  console.log(`\n"JWK-in-payload" variation (${jwt2.length} bytes):`);
  console.log("");
  console.log(jwt2);
};

(async () => {
  for (const algo of algos) {
    await generate(algo.alg, algo.keypair, algo.opts);
  }
})();