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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_DECRYPTER_H_ | 5 #ifndef NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_DECRYPTER_H_ |
6 #define NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_DECRYPTER_H_ | 6 #define NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_DECRYPTER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
11 #include "base/macros.h" | 11 #include "base/macros.h" |
12 #include "net/base/net_export.h" | |
13 #include "net/quic/core/crypto/aead_base_decrypter.h" | 12 #include "net/quic/core/crypto/aead_base_decrypter.h" |
| 13 #include "net/quic/platform/api/quic_export.h" |
14 | 14 |
15 namespace net { | 15 namespace net { |
16 | 16 |
17 // A ChaCha20Poly1305Decrypter is a QuicDecrypter that implements the | 17 // A ChaCha20Poly1305Decrypter is a QuicDecrypter that implements the |
18 // AEAD_CHACHA20_POLY1305 algorithm specified in | 18 // AEAD_CHACHA20_POLY1305 algorithm specified in |
19 // draft-agl-tls-chacha20poly1305-04, except that it truncates the Poly1305 | 19 // draft-agl-tls-chacha20poly1305-04, except that it truncates the Poly1305 |
20 // authenticator to 12 bytes. Create an instance by calling | 20 // authenticator to 12 bytes. Create an instance by calling |
21 // QuicDecrypter::Create(kCC12). | 21 // QuicDecrypter::Create(kCC12). |
22 // | 22 // |
23 // It uses an authentication tag of 16 bytes (128 bits). There is no | 23 // It uses an authentication tag of 16 bytes (128 bits). There is no |
24 // fixed nonce prefix. | 24 // fixed nonce prefix. |
25 class NET_EXPORT_PRIVATE ChaCha20Poly1305Decrypter : public AeadBaseDecrypter { | 25 class QUIC_EXPORT_PRIVATE ChaCha20Poly1305Decrypter : public AeadBaseDecrypter { |
26 public: | 26 public: |
27 enum { | 27 enum { |
28 kAuthTagSize = 12, | 28 kAuthTagSize = 12, |
29 }; | 29 }; |
30 | 30 |
31 ChaCha20Poly1305Decrypter(); | 31 ChaCha20Poly1305Decrypter(); |
32 ~ChaCha20Poly1305Decrypter() override; | 32 ~ChaCha20Poly1305Decrypter() override; |
33 | 33 |
34 const char* cipher_name() const override; | 34 const char* cipher_name() const override; |
35 uint32_t cipher_id() const override; | 35 uint32_t cipher_id() const override; |
36 | 36 |
37 private: | 37 private: |
38 DISALLOW_COPY_AND_ASSIGN(ChaCha20Poly1305Decrypter); | 38 DISALLOW_COPY_AND_ASSIGN(ChaCha20Poly1305Decrypter); |
39 }; | 39 }; |
40 | 40 |
41 } // namespace net | 41 } // namespace net |
42 | 42 |
43 #endif // NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_DECRYPTER_H_ | 43 #endif // NET_QUIC_CORE_CRYPTO_CHACHA20_POLY1305_DECRYPTER_H_ |
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