The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2023
Filed:
Dec. 04, 2020
University of Maryland, College Park, College Park, MD (US);
Ashwin Swaminathan, San Diego, CA (US);
Yinian Mao, San Diego, CA (US);
Guan-Ming Su, Fremont, CA (US);
Hongmei Gou, Germantown, MD (US);
Avinash Varna, Greenbelt, MD (US);
Shan He, Plainsboro, NJ (US);
Min Wu, Clarksville, MD (US);
Douglas W. Oard, College Park, MD (US);
UNIVERSITY OF MARYLAND, COLLEGE PARK, College Park, MD (US);
Abstract
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.