mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 00:06:09 +03:00
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
|
// Copyright 2016 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/unguessable_token.h"
|
||
|
|
|
||
|
|
#include "base/format_macros.h"
|
||
|
|
#include "base/rand_util.h"
|
||
|
|
#include "base/strings/stringprintf.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
UnguessableToken::UnguessableToken(uint64_t high, uint64_t low)
|
||
|
|
: high_(high), low_(low) {}
|
||
|
|
|
||
|
|
std::string UnguessableToken::ToString() const {
|
||
|
|
return base::StringPrintf("(%08" PRIX64 "%08" PRIX64 ")", high_, low_);
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
UnguessableToken UnguessableToken::Create() {
|
||
|
|
UnguessableToken token;
|
||
|
|
// Use base::RandBytes instead of crypto::RandBytes, because crypto calls the
|
||
|
|
// base version directly, and to prevent the dependency from base/ to crypto/.
|
||
|
|
base::RandBytes(&token, sizeof(token));
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
UnguessableToken UnguessableToken::Deserialize(uint64_t high, uint64_t low) {
|
||
|
|
// Receiving a zeroed out UnguessableToken from another process means that it
|
||
|
|
// was never initialized via Create(). Treat this case as a security issue.
|
||
|
|
DCHECK(!(high == 0 && low == 0));
|
||
|
|
return UnguessableToken(high, low);
|
||
|
|
}
|
||
|
|
|
||
|
|
std::ostream& operator<<(std::ostream& out, const UnguessableToken& token) {
|
||
|
|
return out << token.ToString();
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|