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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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_QUIC_RANDOM_H_ | 5 #ifndef NET_QUIC_CORE_CRYPTO_QUIC_RANDOM_H_ |
6 #define NET_QUIC_CORE_CRYPTO_QUIC_RANDOM_H_ | 6 #define NET_QUIC_CORE_CRYPTO_QUIC_RANDOM_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <cstddef> |
9 #include <stdint.h> | 9 #include <cstdint> |
10 | 10 |
11 #include "net/quic/platform/api/quic_export.h" | 11 #include "net/quic/platform/api/quic_export.h" |
12 | 12 |
13 namespace net { | 13 namespace net { |
14 | 14 |
15 // The interface for a random number generator. | 15 // The interface for a random number generator. |
16 class QUIC_EXPORT_PRIVATE QuicRandom { | 16 class QUIC_EXPORT_PRIVATE QuicRandom { |
17 public: | 17 public: |
18 virtual ~QuicRandom() {} | 18 virtual ~QuicRandom() {} |
19 | 19 |
20 // Returns the default random number generator, which is cryptographically | 20 // Returns the default random number generator, which is cryptographically |
21 // secure and thread-safe. | 21 // secure and thread-safe. |
22 static QuicRandom* GetInstance(); | 22 static QuicRandom* GetInstance(); |
23 | 23 |
24 // Generates |len| random bytes in the |data| buffer. | 24 // Generates |len| random bytes in the |data| buffer. |
25 virtual void RandBytes(void* data, size_t len) = 0; | 25 virtual void RandBytes(void* data, size_t len) = 0; |
26 | 26 |
27 // Returns a random number in the range [0, kuint64max]. | 27 // Returns a random number in the range [0, kuint64max]. |
28 virtual uint64_t RandUint64() = 0; | 28 virtual uint64_t RandUint64() = 0; |
29 | 29 |
30 // Reseeds the random number generator with additional entropy input. | 30 // Reseeds the random number generator with additional entropy input. |
31 // NOTE: the constructor of a QuicRandom object is responsible for seeding | 31 // NOTE: the constructor of a QuicRandom object is responsible for seeding |
32 // itself with enough entropy input. | 32 // itself with enough entropy input. |
33 virtual void Reseed(const void* additional_entropy, size_t entropy_len) = 0; | 33 virtual void Reseed(const void* additional_entropy, size_t entropy_len) = 0; |
34 }; | 34 }; |
35 | 35 |
36 } // namespace net | 36 } // namespace net |
37 | 37 |
38 #endif // NET_QUIC_CORE_CRYPTO_QUIC_RANDOM_H_ | 38 #endif // NET_QUIC_CORE_CRYPTO_QUIC_RANDOM_H_ |
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