// Copyright 2018 Google Inc.

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//     http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include <assert.h>

#include <stdlib.h>

#include <sodium.h>

#include "fake_random.h"

extern "C" int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {

  int initialized = sodium_init();

  assert(initialized >= 0);

  setup_fake_random(data, size);

  unsigned char key[crypto_auth_KEYBYTES];

  unsigned char mac[crypto_auth_BYTES];

  // this uses a deterministic generator

  crypto_auth_keygen(key);

  crypto_auth(mac, data, size, key);

  int err = crypto_auth_verify(mac, data, size, key);

  assert(err == 0);

  return 0;

}