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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_OWNERSHIP_OWNER_KEY_LOADER_H_
#define CHROME_BROWSER_ASH_OWNERSHIP_OWNER_KEY_LOADER_H_
#include "base/feature_list.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "components/ownership/owner_key_util.h"
class Profile;
namespace enterprise_management {
class PolicyData;
}
namespace ash {
class DeviceSettingsService;
BASE_DECLARE_FEATURE(kStoreOwnerKeyInPrivateSlot);
BASE_DECLARE_FEATURE(kMigrateOwnerKeyToPrivateSlot);
// A helper single-use class to load the owner key.
// Determines whether the current user is the owner or not.
// For the non-owner just loads the public owner key (which can be used to
// verify signature on the device policies).
// For the owner loads both public and private key or generates new ones if the
// previous ones were lost.
// For the first user that should become the owner generates a new key pair.
// All public methods might depend on the profile and therefore should be run on
// the UI thread.
class OwnerKeyLoader {
public:
using KeypairCallback = base::OnceCallback<void(
scoped_refptr<ownership::PublicKey> public_key,
scoped_refptr<ownership::PrivateKey> private_key)>;
OwnerKeyLoader(Profile* profile,
DeviceSettingsService* device_settings_service,
scoped_refptr<ownership::OwnerKeyUtil> owner_key_util,
bool is_enterprise_managed,
KeypairCallback callback);
OwnerKeyLoader(const OwnerKeyLoader&) = delete;
auto operator=(const OwnerKeyLoader&) = delete;
~OwnerKeyLoader();
// Starts the loading of the key(s). Can be called only once per instance of
// the class.
void Run();
// Extracts the old owner key when it was replaced. Should be called after
// Run() and after the `callback` (from the constructor) is called. Returns a
// nullptr if the key was not replaced.
// TODO(b/264397430): The method can be removed after the migration is done.
crypto::ScopedSECKEYPrivateKey ExtractOldOwnerKey();
private:
void OnPublicKeyLoaded(scoped_refptr<ownership::PublicKey> public_key);
void OnPrivateKeyLoaded(scoped_refptr<ownership::PrivateKey> private_key,
bool found_in_public_slot);
void MaybeGenerateNewKey();
void GenerateNewKey();
void OnNewKeyGenerated(scoped_refptr<ownership::PublicKey> public_key,
scoped_refptr<ownership::PrivateKey> private_key);
void MaybeRegenerateLostKey(
const enterprise_management::PolicyData* policy_data);
const raw_ptr<Profile> profile_;
const raw_ptr<DeviceSettingsService> device_settings_service_;
scoped_refptr<ownership::OwnerKeyUtil> owner_key_util_;
const bool is_enterprise_managed_;
scoped_refptr<ownership::PublicKey> public_key_;
KeypairCallback callback_;
int generate_attempt_counter_ = 0;
// If not null, contains the old owner key that is currently being replaced by
// the MigrateOwnerKeyToPrivateSlot experiment.
// TODO(b/264397430): This can be removed after the migration is finished.
crypto::ScopedSECKEYPrivateKey old_owner_key_;
base::WeakPtrFactory<OwnerKeyLoader> weak_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_OWNERSHIP_OWNER_KEY_LOADER_H_
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