/*
     This file is part of GNUnet.
     Copyright (C) 2002, 2003, 2004, 2006 GNUnet e.V.

     GNUnet 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, either version 3 of the License,
     or (at your option) any later version.

     GNUnet 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 <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */

/**
 * @author Christian Grothoff
 * @file util/perf_crypto_symmetric.c
 * @brief measure performance of encryption function
 */
#include "platform.h"
#include "gnunet_util_lib.h"
#include <gauger.h>


static void
perfEncrypt()
{
  unsigned int i;
  char buf[64 * 1024];
  char rbuf[64 * 1024];
  struct GNUNET_CRYPTO_SymmetricSessionKey sk;
  struct GNUNET_CRYPTO_SymmetricInitializationVector iv;

  GNUNET_CRYPTO_symmetric_create_session_key(&sk);

  memset(buf, 1, sizeof(buf));
  for (i = 0; i < 1024; i++)
    {
      memset(&iv, (int8_t)i, sizeof(iv));
      GNUNET_CRYPTO_symmetric_encrypt(buf, sizeof(buf),
                                      &sk, &iv,
                                      rbuf);
      GNUNET_CRYPTO_symmetric_decrypt(rbuf, sizeof(buf),
                                      &sk, &iv,
                                      buf);
    }
  memset(rbuf, 1, sizeof(rbuf));
  GNUNET_assert(0 == memcmp(rbuf, buf, sizeof(buf)));
}


int
main(int argc, char *argv[])
{
  struct GNUNET_TIME_Absolute start;

  start = GNUNET_TIME_absolute_get();
  perfEncrypt();
  printf("Encrypt perf took %s\n",
         GNUNET_STRINGS_relative_time_to_string(GNUNET_TIME_absolute_get_duration(start),
                                                GNUNET_YES));
  GAUGER("UTIL", "Symmetric encryption",
         64 * 1024 / (1 +
                      GNUNET_TIME_absolute_get_duration
                        (start).rel_value_us / 1000LL), "kb/ms");
  return 0;
}

/* end of perf_crypto_aes.c */