// Copyright 2016 The BoringSSL Authors

//

// 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

//

//     https://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 <openssl/crypto.h>

#include <openssl/bio.h>

#include <openssl/bytestring.h>

#include <openssl/err.h>

#include <openssl/evp.h>

#include <openssl/mem.h>

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {

#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION)

  CRYPTO_set_fuzzer_mode(1);

#endif

  CBS cbs;

  CBS_init(&cbs, buf, len);

  bssl::UniquePtr<EVP_PKEY> pkey(EVP_parse_private_key(&cbs));

  if (pkey == nullptr) {

    ERR_clear_error();

    return 0;

  }

  // Every parsed private key should be serializable.

  bssl::ScopedCBB cbb;

  BSSL_CHECK(CBB_init(cbb.get(), 0));

  BSSL_CHECK(EVP_marshal_public_key(cbb.get(), pkey.get()));

  BSSL_CHECK(EVP_marshal_private_key(cbb.get(), pkey.get()));

  bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));

  EVP_PKEY_print_params(bio.get(), pkey.get(), 0, nullptr);

  EVP_PKEY_print_public(bio.get(), pkey.get(), 0, nullptr);

  EVP_PKEY_print_private(bio.get(), pkey.get(), 0, nullptr);

  ERR_clear_error();

  return 0;

}