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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef NET_QUIC_CRYPTO_NULL_ENCRYPTER_H_ | |
| 6 #define NET_QUIC_CRYPTO_NULL_ENCRYPTER_H_ | |
| 7 | |
| 8 #include "base/compiler_specific.h" | |
| 9 #include "net/base/net_export.h" | |
| 10 #include "net/quic/crypto/quic_encrypter.h" | |
| 11 | |
| 12 namespace net { | |
| 13 | |
| 14 // A NullEncrypter is a QuicEncrypter used before a crypto negotiation | |
| 15 // has occurred. It does not actually encrypt the payload, but does | |
| 16 // generate a MAC (fnv128) over both the payload and associated data. | |
| 17 class NET_EXPORT_PRIVATE NullEncrypter : public QuicEncrypter { | |
| 18 public: | |
| 19 NullEncrypter(); | |
| 20 ~NullEncrypter() override {} | |
| 21 | |
| 22 // QuicEncrypter implementation | |
| 23 bool SetKey(base::StringPiece key) override; | |
| 24 bool SetNoncePrefix(base::StringPiece nonce_prefix) override; | |
| 25 bool Encrypt(base::StringPiece nonce, | |
| 26 base::StringPiece associated_data, | |
| 27 base::StringPiece plaintext, | |
| 28 unsigned char* output) override; | |
| 29 bool EncryptPacket(QuicPacketSequenceNumber sequence_number, | |
| 30 base::StringPiece associated_data, | |
| 31 base::StringPiece plaintext, | |
| 32 char* output, | |
| 33 size_t* output_length, | |
| 34 size_t max_output_length) override; | |
| 35 size_t GetKeySize() const override; | |
| 36 size_t GetNoncePrefixSize() const override; | |
| 37 size_t GetMaxPlaintextSize(size_t ciphertext_size) const override; | |
| 38 size_t GetCiphertextSize(size_t plaintext_size) const override; | |
| 39 base::StringPiece GetKey() const override; | |
| 40 base::StringPiece GetNoncePrefix() const override; | |
| 41 | |
| 42 private: | |
| 43 size_t GetHashLength() const; | |
| 44 | |
| 45 DISALLOW_COPY_AND_ASSIGN(NullEncrypter); | |
| 46 }; | |
| 47 | |
| 48 } // namespace net | |
| 49 | |
| 50 #endif // NET_QUIC_CRYPTO_NULL_ENCRYPTER_H_ | |
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