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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 "base/rand_util.h"
#include <stdlib.h>
#include "base/basictypes.h"
#include "base/logging.h"
namespace {
uint32 RandUint32() {
uint32 number;
CHECK_EQ(rand_s(&number), 0);
return number;
}
} // namespace
namespace base {
// NOTE: This function must be cryptographically secure. http://crbug.com/140076
uint64 RandUint64() {
uint32 first_half = RandUint32();
uint32 second_half = RandUint32();
return (static_cast<uint64>(first_half) << 32) + second_half;
}
} // namespace base
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