Privacy-preserving indexing of documents on the network

✍ Scribed by Mayank Bawa; Roberto J. Bayardo; Rakesh Agrawal; Jaideep Vaidya

• Publisher: Springer-Verlag
• Year: 2009
• Tongue: English
• Weight: 585 KB
• Volume: 18
• Category: Article
• ISSN: 1066-8888
• DOI: 10.1007/s00778-008-0129-7

✦ Synopsis

With the ubiquitous collection of data and creation of large distributed repositories, enabling search over this data while respecting access control is critical. A related problem is that of ensuring privacy of the content owners while still maintaining an efficient index of distributed content. We address the problem of providing privacypreserving search over distributed access-controlled content. Indexed documents can be easily reconstructed from conventional (inverted) indexes used in search. Currently, the need to avoid breaches of access-control through the index requires the index hosting site to be fully secured and trusted by all participating content providers. This level of trust is impractical in the increasingly common case where multiple competing organizations or individuals wish to selectively share content. We propose a solution that eliminates the need of such a trusted authority. The solution builds a centralized privacy-preserving index in conjunction with a distributed access-control enforcing search protocol. Two alternative Dr.