/*
 * server component for the TimeLimit App
 * Copyright (C) 2019 - 2022 Jonas Lochmann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

import { generateKeyPair } from 'crypto'
import { promisify } from 'util'

const generateKeyPairAsync = promisify(generateKeyPair)

export async function generateDhKeypair() {
  return await generateKeyPairAsync(
    'ec',
    {
      namedCurve: 'prime256v1',
      publicKeyEncoding: {
        type: 'spki',
        format: 'der'
      },
      privateKeyEncoding: {
        type: 'pkcs8',
        format: 'der'
      }
    }
  )
}