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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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