Add Download.ShowDangerousDownloadConfirmationPrompt for Windows/CrOS
[chromium-blink-merge.git] / base / rand_util_win.cc
blob391fe5b9e61d6f48f413b97f3f3f536dd38d5da0
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.
5 #include "base/rand_util.h"
7 #include <stdlib.h>
9 #include "base/basictypes.h"
10 #include "base/logging.h"
12 namespace {
14 uint32 RandUint32() {
15 uint32 number;
16 CHECK_EQ(rand_s(&number), 0);
17 return number;
20 } // namespace
22 namespace base {
24 // NOTE: This function must be cryptographically secure. http://crbug.com/140076
25 uint64 RandUint64() {
26 uint32 first_half = RandUint32();
27 uint32 second_half = RandUint32();
28 return (static_cast<uint64>(first_half) << 32) + second_half;
31 } // namespace base