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"
9 #include "base/basictypes.h"
10 #include "base/logging.h"
16 CHECK_EQ(rand_s(&number
), 0);
24 // NOTE: This function must be cryptographically secure. http://crbug.com/140076
26 uint32 first_half
= RandUint32();
27 uint32 second_half
= RandUint32();
28 return (static_cast<uint64
>(first_half
) << 32) + second_half
;