Anti-Collusion Digital Fingerprinting Codes via Partially Cover-Free Families

TL;DR

This paper introduces a new method for creating anti-collusion digital fingerprinting codes using partially cover-free families, improving capacity and efficiency over existing approaches.

Contribution

It proposes a novel construction of fingerprinting codes based on partially cover-free families, enhancing user capacity and reducing basis vectors compared to prior methods.

Findings

Increased number of users supported

Reduced number of basis vectors needed

Effective against collusion attacks

Abstract

Anti-collusion digital fingerprinting codes have been of significant current interest in the context of deterring unauthorized use of multimedia content by a coalition of users. In this article, partially cover-free families of sets are considered and these are employed to obtain such codes. Compared to the existing methods of construction, our methods ensure gains in terms of accommodating more users and/or reducing the number of basis vectors.