text: /*
   Copyright 2018 New Vector Ltd
  
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
  
   http://www.apache.org/licenses/LICENSE-2.0
  
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
   */
  
  #import <Foundation/Foundation.h>
  
  #import "MXJSONModel.h"
  
  NS_ASSUME_NONNULL_BEGIN
  
  /**
   Information on a backup version.
   */
  @interface MXKeyBackupVersion : MXJSONModel <NSCopying>
  
  /**
   The algorithm used for storing backups.
   Currently, only kMXCryptoMegolmBackupAlgorithm (m.megolm_backup.v1.curve25519-aes-sha2) is defined.
   */
  @property (nonatomic) NSString *algorithm;
  
  /**
   Algorithm-dependent data.
   */
  @property (nonatomic) NSDictionary *authData;
  
  /**
   The backup version.
   */
  @property (nonatomic, nullable) NSString *version;
  
  /**
   Enforce usage of factory method to guarantee non-nullabity.
   TODO: Should be done at `MXJSONModel` model.
   */
  //- (instancetype)init NS_UNAVAILABLE;
  //+ (instancetype)new NS_UNAVAILABLE;
  
  @end
  
  NS_ASSUME_NONNULL_END
  