Easy Sign-in: Use TPM RSA key to sign nonce in sign-in protocol

chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.cc

Index: chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.cc
diff --git a/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.cc b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..16580c48e9f11937df05ece4560bc0ac294ad524
--- /dev/null
+++ b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.cc
@@ -0,0 +1,71 @@
+// Copyright 2014 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 "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.h"
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager.h"
+#include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/browser/profiles/incognito_helpers.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "components/user_manager/user.h"
+
+namespace {
+
+PrefService* GetLocalState() {
+  return g_browser_process ? g_browser_process->local_state() : NULL;
+}
+
+}  // namespace
+
+// static
+EasyUnlockTpmKeyManagerFactory* EasyUnlockTpmKeyManagerFactory::GetInstance() {
+  return Singleton<EasyUnlockTpmKeyManagerFactory>::get();
+}
+
+// static
+EasyUnlockTpmKeyManager* EasyUnlockTpmKeyManagerFactory::Get(
+    content::BrowserContext* browser_context) {
+  return static_cast<EasyUnlockTpmKeyManager*>(
+      EasyUnlockTpmKeyManagerFactory::GetInstance()
+          ->GetServiceForBrowserContext(browser_context, true));
+}
+
+EasyUnlockTpmKeyManager* EasyUnlockTpmKeyManagerFactory::GetForUser(
+    const std::string& user_id) {
+  const user_manager::User* user =
+      user_manager::UserManager::Get()->FindUser(user_id);
+  if (!user)
+    return NULL;
+  Profile* profile = chromeos::ProfileHelper::Get()->GetProfileByUser(user);
+  if (!profile)
+    return NULL;
+  return EasyUnlockTpmKeyManagerFactory::Get(profile);
+}
+
+EasyUnlockTpmKeyManagerFactory::EasyUnlockTpmKeyManagerFactory()
+    : BrowserContextKeyedServiceFactory(
+          "EasyUnlockTpmKeyManager",
+          BrowserContextDependencyManager::GetInstance()) {
+}
+
+EasyUnlockTpmKeyManagerFactory::~EasyUnlockTpmKeyManagerFactory() {
+}
+
+KeyedService* EasyUnlockTpmKeyManagerFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  Profile* profile = Profile::FromBrowserContext(context);
+  user_manager::User* user = NULL;
+  if (!chromeos::ProfileHelper::IsSigninProfile(profile))
+    user = chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
+  return new EasyUnlockTpmKeyManager(user ? user->email() : std::string(),
+                                     GetLocalState());
+}
+
+content::BrowserContext* EasyUnlockTpmKeyManagerFactory::GetBrowserContextToUse(
+      content::BrowserContext* context) const {
+  return chrome::GetBrowserContextRedirectedInIncognito(context);
+}