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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/quic/crypto/quic_random.h"
#include "base/logging.h"
#include "base/memory/singleton.h"
#include "crypto/random.h"
namespace net {
namespace {
class DefaultRandom : public QuicRandom {
public:
static DefaultRandom* GetInstance();
// QuicRandom implementation
virtual void RandBytes(void* data, size_t len) OVERRIDE;
virtual uint64 RandUint64() OVERRIDE;
virtual bool RandBool() OVERRIDE;
virtual void Reseed(const void* additional_entropy,
size_t entropy_len) OVERRIDE;
private:
DefaultRandom();
virtual ~DefaultRandom() {}
friend struct DefaultSingletonTraits<DefaultRandom>;
DISALLOW_COPY_AND_ASSIGN(DefaultRandom);
};
DefaultRandom* DefaultRandom::GetInstance() {
return Singleton<DefaultRandom>::get();
}
void DefaultRandom::RandBytes(void* data, size_t len) {
crypto::RandBytes(data, len);
}
uint64 DefaultRandom::RandUint64() {
uint64 value;
RandBytes(&value, sizeof(value));
return value;
}
bool DefaultRandom::RandBool() {
char value;
RandBytes(&value, sizeof(value));
return (value & 1) == 1;
}
void DefaultRandom::Reseed(const void* additional_entropy, size_t entropy_len) {
// No such function exists in crypto/random.h.
}
DefaultRandom::DefaultRandom() {
}
} // namespace
// static
QuicRandom* QuicRandom::GetInstance() { return DefaultRandom::GetInstance(); }
} // namespace net
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