那英语用一段话总结一下上面的软件接口

The public function declarations in a personal affairs management system for college students include adding, editing, and deleting tasks and notes, setting reminders, and retrieving task and note lists. These functions require the user to be logged in and have permission to access them. The protected function declarations include encrypting and decrypting sensitive data, authenticating user login credentials, authorizing access to specific functions, and handling exceptions that may occur during system operation. These functions are designed to protect user data and ensure the security and reliability of the system.