公开(公告)号：US11567950B2

公开(公告)日：2023-01-31

申请号：US17112874

申请日：2020-12-04

申请人： UNIVERSITY OF MARYLAND, COLLEGE PARK

发明人： Ashwin Swaminathan ,  Yinian Mao ,  Guan-Ming Su ,  Hongmei Gou ,  Avinash Varna ,  Shan He ,  Min Wu ,  Douglas W. Oard

IPC分类号： G06F16/00 ,  G06F16/2457 ,  G06F16/48 ,  G06F16/951 ,  G06F21/62 ,  H04L9/00 ,  H04L9/32 ,  G06F16/33

摘要： 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.