Objective-C categories for AppConnect secure file I/O

The AppConnect for iOS SDK provides the following categories, in which each method corresponds to a method in the original class, but provides a secure version of the functionality.

• NSFileManager category

• NSData (ACSecureFile) category

• NSData (ACSharedSecureFile) and ACFileHandle (ACSharedSecureFile) categories

• NSKeyedArchiver category

• NSKeyedUnarchiver category

• NSDictionary category

• NSMutableDictionary category

• NSArray category

• NSMutableArray category

Note the following:

• These methods cannot be used if secure services are not available.

• These methods provide a special error indicating that the encryption key is not available.

  Methods that take a pointer to an NSError object as a parameter provide this error indication. See NSError objects that secure Objective-C methods return.

• The header files are in the AppConnect.xcframework in <category name>.h.