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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ | 5 #ifndef NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ |
6 #define NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ | 6 #define NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ |
7 | 7 |
8 #include <stddef.h> | |
9 | |
10 #include "base/macros.h" | 8 #include "base/macros.h" |
11 #include "net/quic/core/crypto/aead_base_encrypter.h" | 9 #include "net/quic/core/crypto/aead_base_encrypter.h" |
12 #include "net/quic/platform/api/quic_export.h" | 10 #include "net/quic/platform/api/quic_export.h" |
13 | 11 |
14 namespace net { | 12 namespace net { |
15 | 13 |
16 // A ChaCha20Poly1305Encrypter is a QuicEncrypter that implements the | 14 // A ChaCha20Poly1305Encrypter is a QuicEncrypter that implements the |
17 // AEAD_CHACHA20_POLY1305 algorithm specified in | 15 // AEAD_CHACHA20_POLY1305 algorithm specified in RFC 7539, except that |
18 // draft-agl-tls-chacha20poly1305-04, except that it truncates the Poly1305 | 16 // it truncates the Poly1305 authenticator to 12 bytes. Create an instance |
19 // authenticator to 12 bytes. Create an instance by calling | 17 // by calling QuicEncrypter::Create(kCC12). |
20 // QuicEncrypter::Create(kCC12). | |
21 // | 18 // |
22 // It uses an authentication tag of 16 bytes (128 bits). There is no | 19 // It uses an authentication tag of 16 bytes (128 bits). There is no |
23 // fixed nonce prefix. | 20 // fixed nonce prefix. |
24 class QUIC_EXPORT_PRIVATE ChaCha20Poly1305Encrypter : public AeadBaseEncrypter { | 21 class QUIC_EXPORT_PRIVATE ChaCha20Poly1305Encrypter : public AeadBaseEncrypter { |
25 public: | 22 public: |
26 enum { | 23 enum { |
27 kAuthTagSize = 12, | 24 kAuthTagSize = 12, |
28 }; | 25 }; |
29 | 26 |
30 ChaCha20Poly1305Encrypter(); | 27 ChaCha20Poly1305Encrypter(); |
31 ~ChaCha20Poly1305Encrypter() override; | 28 ~ChaCha20Poly1305Encrypter() override; |
32 | 29 |
33 private: | 30 private: |
34 DISALLOW_COPY_AND_ASSIGN(ChaCha20Poly1305Encrypter); | 31 DISALLOW_COPY_AND_ASSIGN(ChaCha20Poly1305Encrypter); |
35 }; | 32 }; |
36 | 33 |
37 } // namespace net | 34 } // namespace net |
38 | 35 |
39 #endif // NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ | 36 #endif // NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_ENCRYPTER_H_ |
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