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Delegated multi-party private set intersections from extendable output functions.

Aslı Bay1

  • 1Department of Computer Engineering, Faculty of Engineering and Natural Sciences, Antalya Bilim University, Döşemealtı, Antalya, Turkey.

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PubMed
Summary

This study introduces a novel, efficient private set intersection protocol using only extendable output functions. It enables secure data operations among multiple parties without compromising privacy or requiring public-key cryptography.

Keywords:
Extendable output functionsMulti-party computationPrivate set intersections

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Area of Science:

  • Computer Science
  • Cryptography
  • Data Privacy

Background:

  • Private set operations are crucial for secure multi-party data analysis.
  • Existing protocols for more than two parties are often inefficient.
  • Outsourced private set operations can improve performance but require further optimization.

Purpose of the Study:

  • To develop a highly efficient and practical private set intersection protocol.
  • To eliminate the reliance on public-key cryptography in multi-party private set operations.
  • To enhance the performance of outsourced private set operations.

Main Methods:

  • Developed a non-interactive private set intersection protocol.
  • Utilized the security of extendable output functions (EOFs).
  • Eliminated the need for public-key cryptography.

Main Results:

  • Achieved high efficiency in private set intersection computations.
  • Demonstrated a 10-client, 16,384-element set intersection in under 54 seconds.
  • Showcased significant performance improvements without sacrificing data privacy.

Conclusions:

  • The proposed protocol offers a practical and efficient solution for private set operations.
  • The reliance solely on EOF security simplifies and speeds up computations.
  • This advancement facilitates secure data collaboration across multiple parties.