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Multi-User PIR with Cyclic Wraparound Multi-Access Caches.

Kanishak Vaidya1, Balaji Sundar Rajan1

  • 1Department of Electrical Communication Engineering, IISc Bangalore, Bengaluru 560012, India.

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|August 26, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces an efficient, privacy-preserving scheme for multi-access cache-aided multi-user Private Information Retrieval (MACAMuPIR). The new method reduces transmission costs in systems with cyclic cache access, enhancing secure data retrieval.

Keywords:
coded cachingmulti-access cachesprivate information retrieval

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Area of Science:

  • Information Security
  • Computer Science
  • Distributed Systems

Background:

  • Multi-access cache-aided systems store replicated files across servers.
  • Users retrieve files from cache nodes, demanding privacy from servers.
  • Existing methods lack efficiency in multi-user, multi-cache scenarios.

Purpose of the Study:

  • To propose a novel private retrieval scheme for MACAMuPIR.
  • To characterize transmission costs in systems with cyclic wraparound cache access.
  • To enhance efficiency and privacy in secure data retrieval.

Main Methods:

  • Formalizing privacy and correctness constraints for MACAMuPIR.
  • Developing a scheme for cyclic wraparound cache access.
  • Analyzing and comparing transmission costs against existing methods.

Main Results:

  • The proposed scheme achieves efficient and private retrieval.
  • Demonstrated performance improvement over dedicated cache setups.
  • Validated the effectiveness of the multi-access approach for MACAMuPIR.

Conclusions:

  • The research offers an efficient, privacy-preserving solution for multi-user PIR.
  • Advances secure data retrieval from distributed servers.
  • Highlights the benefits of multi-access strategies in cache-aided systems.