diff options
author | Hidehiko Abe <hidehiko@google.com> | 2018-04-13 06:33:47 -0700 |
---|---|---|
committer | android-build-merger <android-build-merger@google.com> | 2018-04-13 06:33:47 -0700 |
commit | 8cadf386df57b1ed249634ab88dce7c6f252de4e (patch) | |
tree | 36c89cd375dee720134b6af77c4907a01371f5a7 /base/unguessable_token.cc | |
parent | 026f42b9b0be91cab925c28b01b5271e17d1e7f5 (diff) | |
parent | 34c1558fedad7b65b8595d9e452e3190efa3ed12 (diff) | |
download | libchrome-8cadf386df57b1ed249634ab88dce7c6f252de4e.tar.gz |
Migrate libmojo repository into libchrome, part 1.
am: 34c1558fed
Change-Id: I55e227b5f259dd320b23645d4d051b8e4aab9024
Diffstat (limited to 'base/unguessable_token.cc')
-rw-r--r-- | base/unguessable_token.cc | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/base/unguessable_token.cc b/base/unguessable_token.cc new file mode 100644 index 0000000000..cd9830e686 --- /dev/null +++ b/base/unguessable_token.cc @@ -0,0 +1,41 @@ +// 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 |