Group-Oriented Fingerprinting for Multimedia Forensics

Fingerprinting Techniques for Target-oriented Investigations in Network Forensics

Fingerprinting techniques are receiving widespread attention in the field of information security. In this paper we argue that they may be of specific interest for the field of network forensics. In three case studies, we explore the use of fingerprinting techniques to improve and extend current investigative methods and showcase why fingerprinting allows for more target-oriented investigations...

A framework for theoretical analysis of content fingerprinting

The popularity of video sharing platforms such as Youtube has prompted the need for the development of efficient techniques for multimedia identification. Content fingerprinting is a promising solution for this problem, whereby a short “fingerprint” that captures robust and unique characteristics of a signal is computed from each multimedia document. This fingerprint is then compared with a dat...

Multimedia Fingerprinting Forensics for Traitor Tracing

Expectation maximization decoding of Tardos probabilistic fingerprinting code

This paper presents our recent works on multimedia fingerprinting, improving both the fingerprinting code and the watermarking scheme. Our first contribution focuses on deriving a better accusation process for the well known Tardos codes. It appears that Tardos orginal decoding is very conservative: its performances are guaranteed whatever the collusion strategy. Indeed, major improvements stem...

A low-rate fingerprinting code and its application to blind image fingerprinting

In fingerprinting, a signature, unique to each user, is embedded in each distributed copy of a multimedia content, in order to identify potential illegal redistributors. This paper investigates digital fingerprinting problems involving millions of users and a handful of colluders. In such problems the rate of the fingerprinting code is often well below fingerprinting capacity, and the use of co...