Files
SkycrateBackend/src/main
notkshitij 23eda639c0 Refactor file upload/download with service layer and secure encryption
- Replaced direct encryption logic in FileController with FileService delegation
- Added JWT-based username extraction in file operations
- Updated FileMetadata entity to include `uploadedAt` field and removed redundant getters/setters
- Refactored EncryptionUtil:
  - Switched to AES-CBC with PBKDF2 key derivation
  - Removed RSA-based encryption logic
  - Added salt and IV generation helpers
- Changed JwtAuthenticationFilter to fetch user by username (not email)
- Renamed method in FileMetadataRepository to match new parameter order

FILE UPLOAD NOW WORKS! TESTED USING CURL.
2025-07-03 15:20:10 +05:30
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