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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 #include "net/quic/crypto/quic_random.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "base/memory/singleton.h" | |
9 #include "crypto/random.h" | |
10 | |
11 namespace net { | |
12 | |
13 namespace { | |
14 | |
15 class DefaultRandom : public QuicRandom { | |
16 public: | |
17 static DefaultRandom* GetInstance(); | |
18 | |
19 // QuicRandom implementation | |
20 void RandBytes(void* data, size_t len) override; | |
21 uint64 RandUint64() override; | |
22 void Reseed(const void* additional_entropy, size_t entropy_len) override; | |
23 | |
24 private: | |
25 DefaultRandom() {}; | |
26 ~DefaultRandom() override {} | |
27 | |
28 friend struct DefaultSingletonTraits<DefaultRandom>; | |
29 DISALLOW_COPY_AND_ASSIGN(DefaultRandom); | |
30 }; | |
31 | |
32 DefaultRandom* DefaultRandom::GetInstance() { | |
33 return Singleton<DefaultRandom>::get(); | |
34 } | |
35 | |
36 void DefaultRandom::RandBytes(void* data, size_t len) { | |
37 crypto::RandBytes(data, len); | |
38 } | |
39 | |
40 uint64 DefaultRandom::RandUint64() { | |
41 uint64 value; | |
42 RandBytes(&value, sizeof(value)); | |
43 return value; | |
44 } | |
45 | |
46 void DefaultRandom::Reseed(const void* additional_entropy, size_t entropy_len) { | |
47 // No such function exists in crypto/random.h. | |
48 } | |
49 | |
50 } // namespace | |
51 | |
52 // static | |
53 QuicRandom* QuicRandom::GetInstance() { return DefaultRandom::GetInstance(); } | |
54 | |
55 } // namespace net | |
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