ABSAC: Attribute-Based Access Control Model Supporting Anonymous Access for Smart Cities

Smart cities require new access control models for Internet of Things (IoT) devices that preserve user privacy while guaranteeing scalability and efficiency. Researchers believe anonymous can protect the private information even if is not stored in authorization organization. Many attribute-based (ABAC) support expose attributes subject to organization during process, which allows obtain infer identity subject. The ABAC with proposed this paper called ABSAC strengthens identity-less by combining homomorphic signatures (HABSs) does send organization, reducing risk re-identification. It a secure framework. Tests show performance implementation similar ABAC’s performance.