We implemented a prototype of our scheme and demonstrated its efficiency on datasets from prior work. Apart from its concrete efficiency, our scheme is also simpler: in particular, it does not require the server to support any operation other than upload and download of data. Thus the server in our scheme can be based solely on a cloud storage service, rather than a cloud computation service as well, as in prior work.
In building our dynamic SSE scheme, we introduce a new primitive called Blind Storage, which allows a client to store a set of files on a remote server in such a way that the server does not learn how many files are stored, or the lengths of the individual files; as each file is retrieved, the server learns about its existence (and can notice the same file being downloaded subsequently), but the file’s name and contents are not revealed. This is a primitive with several applications other than SSE, and is of independent interest.Category / Keywords: searchable symmetric encryption, secure cloud storage, encrypted search Date: received 25 Mar 2014, last revised 26 Mar 2014 Contact author: naveed2 at illinois edu Available format(s): PDF | BibTeX Citation Version: 20140327:133558 (All versions of this report) Discussion forum: Show discussion | Start new discussion