/*

 * OSS-Fuzz target for libcaes AES-CCM crypt function

 *

 * Copyright (C) 2011-2024, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser 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 Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <stddef.h>

#include <stdint.h>

/* Note that some of the OSS-Fuzz engines use C++

 */

extern "C" {

#include "ossfuzz_libcaes.h"

int LLVMFuzzerTestOneInput(

     const uint8_t *data,

     size_t size )

{

  uint8_t encrypted_data[ 64 ];

  uint8_t key[ 16 ]  = {

    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };

  uint8_t nonce[ 8 ] = {

    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };

  libcaes_context_t *context = NULL;

  if( libcaes_context_initialize(

       &context,

       NULL ) != 1 )

  {

    return( 0 );

  }

  if( libcaes_context_set_key(

       context,

       LIBCAES_CRYPT_MODE_ENCRYPT,

       key,

       128,

       NULL ) != 1 )

  {

    goto on_error_libcaes;

  }

  libcaes_crypt_ccm(

   context,

   LIBCAES_CRYPT_MODE_ENCRYPT,

   nonce,

   8,

   data,

   size,

   encrypted_data,

   64,

   NULL );

on_error_libcaes:

  libcaes_context_free(

   &context,

   NULL );

  return( 0 );

}

} /* extern "C" */