TokenBindingConstructor.h

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/*
 *  Copyright (c) 2018-present, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree.
 */

#pragma once

#include <fizz/extensions/tokenbinding/Types.h>
#include <folly/ssl/OpenSSLPtrTypes.h>

namespace fizz {
namespace extensions {

class TokenBindingConstructor {
 public:
  static TokenBinding createTokenBinding(
      EVP_PKEY& keyPair,
      const Buf& ekm,
      TokenBindingKeyParameters negotiatedParameters,
      TokenBindingType type);

 private:
  static Buf encodeEcKey(const folly::ssl::EcKeyUniquePtr& ecKey);

  static Buf encodeEcdsaSignature(
      const folly::ssl::EcdsaSigUniquePtr& signature);

  static Buf signWithEcKey(
      const folly::ssl::EcKeyUniquePtr& key,
      const Buf& message);

  static void addBignumToSignature(const Buf& signature, BIGNUM* bigNum);
};
} // namespace extensions
} // namespace fizz