A Combined Solution for Conjunctive Keyword Search, Phrase Search and Auditing for Encrypted Cloud Storage
Hoi Ting Poon, Ali Miri · 2016
Cloud computing has garnered much interest in recent years for its many advantages, but also for its security, privacy concerns. The storage, access of confidential documents has been identified as one of the central problems in the area. Many researchers investigated solutions to search over encrypted documents stored on remote cloud servers. Others proposed schemes for ensuring data integrity or reduce overhead through deduplication while keeping the data encrypted, inaccessible by the cloud operator. While many schemes have been proposed to perform the individual functionalities, less attention has been made to more complete solutions featuring multiple desired functionalities. In this paper, we present a solution that incorporates search, phrase search, auditing where resources are reused for enabling each functionality, achieving an overall smaller storage cost, complexity than implementing each of the functionalities separately. The solution performs search over encrypted documents as efficiently as the leading phrase search scheme in the literature while also enabling unlimited number of audit queries.