Privacy-Preserving Data Sharing in Cloud IoT on Solid

Fatmah Mashat, Maribel Fernandez

Keywords: Category-Based Access Control, IoT Privacy, Databank, Solid, Data sharing, policy preference

Abstract:

The continuous growth of Smart Home IoT has increased the complexity of governing personal data. This paper
presents a category-based approach to simplify the management of user privacy policies within a Databank
architecture built upon Solid pods. We present a layered architecture that separates data collection, policy
reasoning, automated data transfer, and storage in Solid pods. Two access control enforcement models are
analysed: a Solid-mediated model, which depends on Solid’s built-in access control mechanisms and is restricted
to static policies, and a Databank-mediated model, which uses Solid only for storage and enforces category-
based rules externally. This shows that the same category policy can support different trust and enforcement
distributions, thus integrating category-based control with Solid offers a flexible and explainable basis for
user-centric smart-home data management.

Submission Number: 4