ltijs/dist/Utils/Keyset.js

Turn your application into a fully integratable LTI 1.3 tool or platform.

"use strict";

/* Handle jwk keyset generation */
const jose = require('node-jose');

const provKeysetDebug = require('debug')('provider:keyset');

class Keyset {
  /**
     * @description Handles the creation of jwk keyset.
     */
  static async build(Database, ENCRYPTIONKEY, logger) {
    try {
      const keys = await Database.Get(ENCRYPTIONKEY, 'publickey');
      const keystore = jose.JWK.createKeyStore();
      const kids = [];

      for (const key of keys) {
        await keystore.add(key.key, 'pem');
        kids.push(key.kid);
      }

      const jwks = keystore.toJSON(false);

      for (const i in jwks.keys) {
        jwks.keys[i].kid = kids[i];
        jwks.keys[i].alg = 'RS256';
        jwks.keys[i].use = 'sig';
      }

      return jwks;
    } catch (err) {
      provKeysetDebug(err.message);
      if (logger) logger.log({
        level: 'error',
        message: 'Message: ' + err.message + '\nStack: ' + err.stack
      });
      return false;
    }
  }

}

module.exports = Keyset;