chromium/third_party/private-join-and-compute/src/crypto/context.h

/*
 * Copyright 2019 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
 *
 *     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.
 */

#ifndef CRYPTO_CONTEXT_H_
#define CRYPTO_CONTEXT_H_

#include <stdint.h>

#include <memory>
#include <string>

#include "third_party/private-join-and-compute/base/private_join_and_compute_export.h"
#include "third_party/private-join-and-compute/src/chromium_patch.h"
#include "third_party/private-join-and-compute/src/crypto/big_num.h"
#include "third_party/private-join-and-compute/src/crypto/openssl.inc"

#define CRYPTO_CHECK(expr) …

namespace private_join_and_compute {

std::string OpenSSLErrorString();

// Wrapper around various contexts needed for openssl operations. It holds a
// BN_CTX to be reused when doing BigNum arithmetic operations and an EVP_MD_CTX
// to be reused when doing hashing operations.
//
// This class provides factory methods for creating BigNum objects that take
// advantage of the BN_CTX structure for arithmetic operations.
//
// This class is not thread-safe, so each thread needs to have a unique Context
// initialized.
class PRIVATE_COMPUTE_EXPORT Context { … };

}  // namespace private_join_and_compute

#endif  // CRYPTO_CONTEXT_H_