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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 <stddef.h> | |
9 | |
10 #include "base/compiler_specific.h" | |
11 #include "base/macros.h" | |
12 #include "net/base/net_export.h" | |
13 #include "net/quic/crypto/quic_encrypter.h" | |
14 | |
15 namespace net { | |
16 | |
17 // A NullEncrypter is a QuicEncrypter used before a crypto negotiation | |
18 // has occurred. It does not actually encrypt the payload, but does | |
19 // generate a MAC (fnv128) over both the payload and associated data. | |
20 class NET_EXPORT_PRIVATE NullEncrypter : public QuicEncrypter { | |
21 public: | |
22 NullEncrypter(); | |
23 ~NullEncrypter() override {} | |
24 | |
25 // QuicEncrypter implementation | |
26 bool SetKey(base::StringPiece key) override; | |
27 bool SetNoncePrefix(base::StringPiece nonce_prefix) override; | |
28 bool EncryptPacket(QuicPathId path_id, | |
29 QuicPacketNumber packet_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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