- Move IDataProtectionProvider, IDataProtector, and extension methods to their own package
- Simplify the APIs for registering and configuring the system
- Default implementation now auto-detects capabilities of OS
- Use EncryptedXml for X.509 certificate-based encryption
- Add ability to escrow secret material upon key creation
- Use centralized system policy for default algorithm selection
- Simplify System.Web compatibility layer
- Add unit tests, logging, and doc comments throughout solution