Dynamic searchable symmetric encryption method and system with advanced privacy and delegated verifiability

摘要

The present invention relates to such an architecture network allowing multiple users, such as data owners and data users, to search, while preserving privacy, in encrypted phis stored in cloud networks and to verify the accuracy and completeness of retrieved results simultaneously. Data owners and users can be patient, hsps or a combination thereof. iot gateway aggregates data collected in single phi file, extracts keywords, builds encrypted index, and encrypts phi files before the index and files are streamed to the cloud network for storage, allowing the network to achieve network efficiency. sublinear search and advanced privacy by keeping counter for each keyword in iot gateway. Once phi files are transmitted and added / stored on the cloud network, deletion / modification is eliminated. cloud network, you don't need to learn if stored phi files contain specific keywords. any number of hsps provide health care services to search, query, and / or retrieve encrypted user phis stored in cloud increments in verifiable privacy mode. Patient-delegated verifiability is derived from a combination of bloom filter and aggregate message authentication code.