The integration of cloud computing and Internet of Things (IoT) is quicklybecoming the key enabler for the digital transformation of the healthcareindustry by offering comprehensive improvements in patient engagements,productivity and risk mitigation. This paradigm shift, while bringing numerousbenefits and new opportunities to healthcare organizations, has raised a lot ofsecurity and privacy concerns. In this paper, we present a reliable, searchableand privacy-preserving e-healthcare system, which takes advantage of emergingcloud storage and IoT infrastructure and enables healthcare service providers(HSPs) to realize remote patient monitoring in a secure and regulatorycompliant manner. Our system is built upon a novel dynamic searchable symmetricencryption scheme with forward privacy and delegated verifiability forperiodically generated healthcare data. While the forward privacy is achievedby maintaining an increasing counter for each keyword at an IoT gateway, thedata owner delegated verifiability comes from the combination of the Bloomfilter and aggregate message authentication code. Moreover, our system is ableto support multiple HSPs through either data owner assistance or delegation.The detailed security analysis as well as the extensive simulations on a largedata set with millions of records demonstrate the practical efficiency of theproposed system for real world healthcare applications.
展开▼
