| // Copyright (c) 2012 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_NULL_ENCRYPTER_H_ |
| #define QUICHE_QUIC_CORE_CRYPTO_NULL_ENCRYPTER_H_ |
| |
| #include <cstddef> |
| |
| #include "absl/strings/string_view.h" |
| #include "quiche/quic/core/crypto/quic_encrypter.h" |
| #include "quiche/quic/core/quic_types.h" |
| #include "quiche/quic/platform/api/quic_export.h" |
| |
| namespace quic { |
| |
| // A NullEncrypter is a QuicEncrypter used before a crypto negotiation |
| // has occurred. It does not actually encrypt the payload, but does |
| // generate a MAC (fnv128) over both the payload and associated data. |
| class QUICHE_EXPORT NullEncrypter : public QuicEncrypter { |
| public: |
| explicit NullEncrypter(Perspective perspective); |
| NullEncrypter(const NullEncrypter&) = delete; |
| NullEncrypter& operator=(const NullEncrypter&) = delete; |
| ~NullEncrypter() override {} |
| |
| // QuicEncrypter implementation |
| bool SetKey(absl::string_view key) override; |
| bool SetNoncePrefix(absl::string_view nonce_prefix) override; |
| bool SetIV(absl::string_view iv) override; |
| bool SetHeaderProtectionKey(absl::string_view key) override; |
| bool EncryptPacket(uint64_t packet_number, absl::string_view associated_data, |
| absl::string_view plaintext, char* output, |
| size_t* output_length, size_t max_output_length) override; |
| std::string GenerateHeaderProtectionMask(absl::string_view sample) override; |
| size_t GetKeySize() const override; |
| size_t GetNoncePrefixSize() const override; |
| size_t GetIVSize() const override; |
| size_t GetMaxPlaintextSize(size_t ciphertext_size) const override; |
| size_t GetCiphertextSize(size_t plaintext_size) const override; |
| QuicPacketCount GetConfidentialityLimit() const override; |
| absl::string_view GetKey() const override; |
| absl::string_view GetNoncePrefix() const override; |
| |
| private: |
| size_t GetHashLength() const; |
| |
| Perspective perspective_; |
| }; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_CRYPTO_NULL_ENCRYPTER_H_ |