//  Copyright (C) 2018 Zilliqa
//
//  This file is part of zilliqa-js
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  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 General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
declare module "pbkdf2" {
  type Digest =
    | "md5"
    | "sha1"
    | "sha224"
    | "sha256"
    | "sha384"
    | "sha512"
    | "rmd160"
    | "ripemd160";

  function pbkdf2Sync(
    passphrase: Buffer,
    salt: Buffer,
    n: number,
    dklen: number,
    digest: Digest
  ): Buffer;

  function pbkdf2(
    passphrase: Buffer,
    salt: Buffer,
    n: number,
    dklen: number,
    digest: Digest,
    cb: (err: any, derivedKey: Buffer) => void
  ): void;

  interface Exported {
    pbkdf2: typeof pbkdf2;
    pbkdf2Sync: typeof pbkdf2Sync;
  }

  var exports: Exported;

  export = exports;
}