text: //
  //  SFHFKeychainUtils.h
  //
  //  Created by Buzz Andersen on 10/20/08.
  //  Based partly on code by Jonathan Wight, Jon Crosby, and Mike Malone.
  //  Copyright 2008 Sci-Fi Hi-Fi. All rights reserved.
  //
  //  Permission is hereby granted, free of charge, to any person
  //  obtaining a copy of this software and associated documentation
  //  files (the "Software"), to deal in the Software without
  //  restriction, including without limitation the rights to use,
  //  copy, modify, merge, publish, distribute, sublicense, and/or sell
  //  copies of the Software, and to permit persons to whom the
  //  Software is furnished to do so, subject to the following
  //  conditions:
  //
  //  The above copyright notice and this permission notice shall be
  //  included in all copies or substantial portions of the Software.
  //
  //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  //  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  //  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  //  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  //  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  //  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  //  OTHER DEALINGS IN THE SOFTWARE.
  //
  
  #import <UIKit/UIKit.h>
  
  
  @interface BITKeychainUtils : NSObject {
    
  }
  
  + (NSString *) getPasswordForUsername: (NSString *) username andServiceName: (NSString *) serviceName error: (NSError **) error;
  //uses the default kSecAttrAccessibleWhenUnlocked
  + (BOOL) storeUsername: (NSString *) username andPassword: (NSString *) password forServiceName: (NSString *) serviceName updateExisting: (BOOL) updateExisting error: (NSError **) error;
  + (BOOL) storeUsername: (NSString *) username andPassword: (NSString *) password forServiceName: (NSString *) serviceName updateExisting: (BOOL) updateExisting accessibility:(CFTypeRef) accessibility error: (NSError **) error;
  + (BOOL) deleteItemForUsername: (NSString *) username andServiceName: (NSString *) serviceName error: (NSError **) error;
  + (BOOL) purgeItemsForServiceName:(NSString *) serviceName error: (NSError **) error;
  
  @end
  