// Copyright 2018 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.

#ifndef COMPONENTS_OS_CRYPT_OS_CRYPT_PREF_NAMES_MAC_H_
#define COMPONENTS_OS_CRYPT_OS_CRYPT_PREF_NAMES_MAC_H_

#include "base/component_export.h"

namespace os_crypt {
namespace prefs {

// The boolean which indicates the existence of the encryption key in the
// Keychain.
// Sometimes when the Keychain seems to be available, it may happen that Chrome
// fails to retrieve the key from the Keychain, which causes Chrome to overwrite
// the old key with a newly generated key. Overwriting the encryption key can
// cause various problems, so there should be another mechanism to make sure
// that the key is not overwritten. This flag should be set to true once the
// encryption key is generated or successfully retrieved. If this flag is set to
// true and Chrome couldn't get the encryption key from the Keychain, encryption
// should be temporarily unavailable instead of generating a new key.
COMPONENT_EXPORT(OS_CRYPT) extern const char kKeyCreated[];

// The number of times Chrome prevented overwriting the encryption key in a row.
// Initial value is zero and is reset back to zero once the key is successfully
// retrieved from the Keychain.
COMPONENT_EXPORT(OS_CRYPT) extern const char kKeyOverwritingPreventions[];

}  // namespace prefs
}  // namespace os_crypt

#endif  // COMPONENTS_OS_CRYPT_OS_CRYPT_PREF_NAMES_MAC_H_