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1 // Copyright (c) 2013 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_AES_128_GCM_12_DECRYPTER_H_ | |
6 #define NET_QUIC_CRYPTO_AES_128_GCM_12_DECRYPTER_H_ | |
7 | |
8 #include "net/quic/crypto/aead_base_decrypter.h" | |
9 | |
10 namespace net { | |
11 | |
12 // An Aes128Gcm12Decrypter is a QuicDecrypter that implements the | |
13 // AEAD_AES_128_GCM_12 algorithm specified in RFC 5282. Create an instance by | |
14 // calling QuicDecrypter::Create(kAESG). | |
15 // | |
16 // It uses an authentication tag of 12 bytes (96 bits). The fixed prefix | |
17 // of the nonce is four bytes. | |
18 class NET_EXPORT_PRIVATE Aes128Gcm12Decrypter : public AeadBaseDecrypter { | |
19 public: | |
20 enum { | |
21 // Authentication tags are truncated to 96 bits. | |
22 kAuthTagSize = 12, | |
23 }; | |
24 | |
25 Aes128Gcm12Decrypter(); | |
26 ~Aes128Gcm12Decrypter() override; | |
27 | |
28 #if !defined(USE_OPENSSL) | |
29 protected: | |
30 // AeadBaseDecrypter methods: | |
31 void FillAeadParams(base::StringPiece nonce, | |
32 const base::StringPiece& associated_data, | |
33 size_t auth_tag_size, | |
34 AeadParams* aead_params) const override; | |
35 #endif | |
36 | |
37 private: | |
38 DISALLOW_COPY_AND_ASSIGN(Aes128Gcm12Decrypter); | |
39 }; | |
40 | |
41 } // namespace net | |
42 | |
43 #endif // NET_QUIC_CRYPTO_AES_128_GCM_12_DECRYPTER_H_ | |
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