generate_jwks.js

/**
MyInfo v4 required JWKS and two certs(one for signing and one for encoding)
Following code will print out signing cert and encoding certs.
It will also print out the whole JWKS.
**/

const jose = require('node-jose');
const crypto = require('crypto');
async function generateKey(){
  let key = crypto.generateKeyPairSync('ec', {
    namedCurve: 'prime256v1',
    publicKeyEncoding: {
      type: 'spki',
      format: 'pem',
    },
    privateKeyEncoding: {
      type: 'pkcs8',
      format: 'pem',
    },
  });
  let cryptoKey = await jose.JWK.asKey(key.privateKey, 'pem');
  console.log(cryptoKey.toPEM(true));
  return cryptoKey;
}
async function generateJwks() {
  //Creating Signing Key
  let signingKey = await generateKey();
  let publicSigningKeyJSON = signingKey.toJSON();

  //Creating Encryption Key
  let encryptionKey = await generateKey();
  let publicEncryptionKeyJSON = encryptionKey.toJSON();

    let jwks = {
      keys: [{...publicSigningKeyJSON,
              ...{use: 'sig'},
              ...{crv: 'P-256'},
              ...{alg: 'ES256'},
    },
    {...publicEncryptionKeyJSON,
              ...{use: 'enc'},
              ...{crv: 'P-256'},
              ...{alg: 'ECDH-ES+A256KW'},
    }]};

    console.log(JSON.stringify(jwks));
}
generateJwks();