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.
7 #include "base/rand_util.h"
8 #include "base/strings/stringprintf.h"
12 std::string
GenerateGUID() {
13 uint64 sixteen_bytes
[2] = { base::RandUint64(), base::RandUint64() };
14 return RandomDataToGUIDString(sixteen_bytes
);
17 // TODO(cmasone): Once we're comfortable this works, migrate Windows code to
19 std::string
RandomDataToGUIDString(const uint64 bytes
[2]) {
20 return StringPrintf("%08X-%04X-%04X-%04X-%012llX",
21 static_cast<unsigned int>(bytes
[0] >> 32),
22 static_cast<unsigned int>((bytes
[0] >> 16) & 0x0000ffff),
23 static_cast<unsigned int>(bytes
[0] & 0x0000ffff),
24 static_cast<unsigned int>(bytes
[1] >> 48),
25 bytes
[1] & 0x0000ffffffffffffULL
);