%0 Patent %D 2010 %T System and Method for Confidentiality-Preserving Rank-Ordered Search %A Swaminathan,Ashwin %A Mao,Yinian %A Su,Guan-Ming %A Gou,Hongmei %A Varna,Avinash L. %A He,Shan %A M. Wu %A Oard, Douglas %X A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order. %V 12/608,724 %8 2010/06/10/ %G eng %U http://www.google.com/patents?id=kInVAAAAEBAJ