Publicly Verifiable Shared Dynamic Electronic Health Record Databases with Functional Commitment Supporting Privacy-Preserving Integrity Auditing

This paper introduces an innovative Electronic Health Record (EHR) system addressing challenges of data integrity and computational burden posed by IoT devices. Employing a Verifiable Database (VDB) model, it ensures correctness and storage integrity while minimizing user communication costs. The proposed scheme utilizes a modified Functional Commitment (FC) design under the computational l-BDHE assumption, enhancing efficiency through real-time proof generation. Notably, it incorporates an efficient verifier-local revocation group signature scheme, enabling dynamic group member operations with features like traceability and non-frame ability. This publicly verifiable shared updatable EHR database scheme offers privacy preservation and batch integrity checking, presenting a promising solution for resource-constrained users in the healthcare domain