chromium/net/third_party/quiche/src/quiche/quic/core/crypto/cert_compressor.h

// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef QUICHE_QUIC_CORE_CRYPTO_CERT_COMPRESSOR_H_
#define QUICHE_QUIC_CORE_CRYPTO_CERT_COMPRESSOR_H_

#include <string>
#include <vector>

#include "absl/strings/string_view.h"
#include "quiche/quic/core/crypto/crypto_protocol.h"
#include "quiche/quic/platform/api/quic_export.h"

namespace quic {

// CertCompressor provides functions for compressing and decompressing
// certificate chains using two techniquies:
//   1) The peer may provide a list of a 64-bit, FNV-1a hashes of certificates
//      that they already have. In the event that one of them is to be
//      compressed, it can be replaced with just the hash.
//   2) Otherwise the certificates are compressed with zlib using a pre-shared
//      dictionary that consists of the certificates handled with the above
//      methods and a small chunk of common substrings.
class QUICHE_EXPORT CertCompressor { … };

}  // namespace quic

#endif  // QUICHE_QUIC_CORE_CRYPTO_CERT_COMPRESSOR_H_