Yissum - Research Development Company of the Hebrew University

Improved and Secure Search Function for Encrypted Cloud Data

Posted by Yissum - Research Development Company of the Hebrew UniversityResponsive · Innovative Products and Technologies · Israel

Summary of the technology

Cryptography, Cloud Technology

OLD: Secure Search of Encrypted Cloud Data
Project ID : 10-2016-4286

Yissum - Research Development Company of the Hebrew University

Description of the technology

Searchable symmetric encryption with practical big-data performance and strong security

  • Outsourcing data storage to remote servers offers invaluable benefits while introducing many concerns when dealing with sensitive data.
  • In the presence of potentially-vulnerable servers, strong user-side encryption preserves the confidentiality of the data but renders essential operations (such as keyword search) extremely expensive and sometimes even unfeasible.
  • To overcome this problem, the cryptography and security community has developed various searchable symmetric encryption (SSE) methods that enable searching through encrypted data without revealing any unnecessary information.
  • However, despite the rapidly increasing commercial interest in SSE technology, it has been shown that the performance of the existing methods scales badly to big data, not due to their usage of expressive cryptographic tools, but rather due to their poor data locality.
  • Practical big-data performance and strong security are the two most essential ingredients for unleashing the potential of SSE technology, but have so far emerged as two extremely conflicting goals.

Our Innovation

  • The first searchable symmetric encryption (SSE) method that offers practical big-data performance while guaranteeing strong security. The method can be based on any off-the- shelf block cipher and enjoys essentially optimal space and communication overheads together with near-optimal data locality.

Key Features

  • A breakthrough combination of cryptographic and algorithmic techniques
  • Significant improvements over previous SSE systems in both security and performance
  • Practical big-data performance
  • Strong and precise security guarantees
  • Low-cost implementation given any off-the- shelf block cipher

Project manager

Anna Pellivert

Project researchers

Gil Segev
HUJI, School of Computer Science and Engineering
Computer Science

Related keywords

  • Information Processing, Information System, Workflow Management
  • IT and Telematics Applications
  • Multimedia
  • Computers
  • Computer Graphics Related
  • Specialised Turnkey Systems
  • Scanning Related
  • Peripherals
  • Computer Services
  • Computer Software Market
  • Other Computer Related
  • Computer Science & Engineering
  • Computer Networks

About Yissum - Research Development Company of the Hebrew University

Technology Transfer Office from Israel

Yissum Research Development Company of the Hebrew University of Jerusalem Ltd. Founded in 1964 to protect and commercialize the Hebrew University’s intellectual property. Ranked among the top technology transfer companies, Yissum has registered over 8,900 patents covering 2,500 inventions; has licensed out 800 technologies and has spun-off 90 companies. Products that are based on Hebrew University technologies and were commercialized by Yissum generate today over $2 Billion in annual sales.

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