axiom-file-protection-ref
iOS File Protection Reference
Purpose: Comprehensive reference for file encryption and data protection APIs Availability: iOS 4.0+ (all protection levels), latest enhancements in iOS 26 Context: Built on iOS Data Protection architecture using hardware encryption
When to Use This Skill
Use this skill when you need to:
- Protect sensitive user data at rest
- Choose appropriate FileProtectionType for files
- Understand when files are accessible/encrypted
- Debug "file not accessible" errors after device lock
- Implement secure file storage
- Compare Keychain vs file protection approaches
- Handle background file access requirements
Overview
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