A Novel Blockchain Based Efficient Searchable Security Record Model in Electronics Health Records Sharing Over the Clouds

Resumen

Blockchain technology offers transformative solutions for the healthcare sector, from securing Electronic Health Records (EHRs) to enhancing transparency in the organ trade and pharmaceutical supply chains. Leveraging blockchain, numerous EHR models have been proposed, with many in the healthcare industry moving to cloud-based, encrypted record storage. Searchable encryption has proven effective for processing such data. Balancing security and equitable access to records is critical, especially when interests of record owners and users may diverge. This study introduces an Efficient Searchable Secure Record Model (ESSRM) utilizing blockchain and smart contracts to optimize this balance. The ESSRM employs an optimal computing module for processing ciphertext and keywords, and utilizes smart contracts for increased efficiency. Comparative performance evaluations show the ESSRM model excels in computation and storage efficiency over existing cloud-based searchable EHR models.