/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014-2018, Regents of the University of California
 *
 * This file is part of NAC (Name-Based Access Control for NDN).
 * See AUTHORS.md for complete list of NAC authors and contributors.
 *
 * NAC 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.
 *
 * NAC 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
 * NAC, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NDN_ENCRYPTOR_HPP
#define NDN_ENCRYPTOR_HPP

#include "encrypt-params.hpp"
#include <ndn-cxx/data.hpp>

namespace ndn {
namespace nac {
namespace algo {

/**
 * @brief Prepare an encrypted data packet.
 *
 * This method will encrypt @p payload using @p key according to @p params.
 * In addition, it will prepare the EncryptedContent TLVs with the encryption
 * result with @p keyName and @p params. The TLV will be set as the content of
 * @p data. If @p params defines an asymmetric encryption and the payload is
 * larger than the max plaintext size, this method will encrypt the payload
 * with a symmetric key that will be asymmetrically encrypted and provided as
 * a nonce in the content of @p data.
 */
void
encryptData(Data& data,
            const uint8_t* payload,
            size_t payloadLen,
            const Name& keyName,
            const uint8_t* key,
            size_t keyLen,
            const EncryptParams& params);

} // namespace algo
} // namespace nac
} // namespace ndn

#endif // NDN_ENCRYPTOR_HPP