32 lines
679 B
C++
32 lines
679 B
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/rand_util.h"
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#include <stdlib.h>
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#include "base/basictypes.h"
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#include "base/logging.h"
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namespace {
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uint32 RandUint32() {
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uint32 number;
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CHECK_EQ(rand_s(&number), 0);
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return number;
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}
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} // namespace
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namespace base {
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// NOTE: This function must be cryptographically secure. http://crbug.com/140076
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uint64 RandUint64() {
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uint32 first_half = RandUint32();
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uint32 second_half = RandUint32();
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return (static_cast<uint64>(first_half) << 32) + second_half;
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}
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} // namespace base
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