15 citations · 61 across the 17 of their papers we have counts for
19 papers
Information Forensics and Security: A quarter-century-long journey
Mauro Barni, Patrizio Campisi, Edward J. Delp +7
Information Forensics and Security (IFS) is an active R&D area whose goal is to ensure that people use devices, data, and intellectual properties for authorized purposes and to fac…
Towards Traitor Tracing in Black-and-White-Box DNN Watermarking with Tardos-based Codes
Elena Rodriguez-Lois, Fernando Perez-Gonzalez
The growing popularity of Deep Neural Networks, which often require computationally expensive training and access to a vast amount of data, calls for accurate authorship verificati…
Filter Design for Delay-Based Anonymous Communications
Simon Oya, Fernando Pérez-González, Carmela Troncoso
In this work, we address the problem of designing delay-based anonymous communication systems. We consider a timed mix where an eavesdropper wants to learn the communication patter…
Understanding the Effects of Real-World Behavior in Statistical Disclosure Attacks
Simon Oya, Carmela Troncoso, Fernando Pérez-González
High-latency anonymous communication systems prevent passive eavesdroppers from inferring communicating partners with certainty. However, disclosure attacks allow an adversary to r…
A Least Squares Approach to the Static Traffic Analysis of High-Latency Anonymous Communication Systems
Fernando Pérez-González, Carmela Troncoso, Simon Oya
Mixes, relaying routers that hide the relation between incoming and outgoing messages, are the main building block of high-latency anonymous communication networks. A number of so-…
Meet the Family of Statistical Disclosure Attacks
Simon Oya, Carmela Troncoso, Fernando Pérez-González
Disclosure attacks aim at revealing communication patterns in anonymous communication systems, such as conversation partners or frequency. In this paper, we propose a framework to…
MPEG-2 Prediction Residue Analysis
David Vázquez-Padín, Fernando Pérez-González
Based on the use of synthetic signals and autoregressive models to characterize temporal dependencies and inter prediction processes, a semi-analytic model is built to explain the…
Rethinking Location Privacy for Unknown Mobility Behaviors
Simon Oya, Carmela Troncoso, Fernando Pérez-González
Location Privacy-Preserving Mechanisms (LPPMs) in the literature largely consider that users' data available for training wholly characterizes their mobility patterns. Thus, they h…
Multivariate Cryptosystems for Secure Processing of Multidimensional Signals
Alberto Pedrouzo-Ulloa, Juan Ramón Troncoso-Pastoriza, Fernando Pérez-González
Multidimensional signals like 2-D and 3-D images or videos are inherently sensitive signals which require privacy-preserving solutions when processed in untrustworthy environments,…
Is Geo-Indistinguishability What You Are Looking for?
Simon Oya, Carmela Troncoso, Fernando Pérez-González
Since its proposal in 2013, geo-indistinguishability has been consolidated as a formal notion of location privacy, generating a rich body of literature building on this idea. A pro…
Back to the Drawing Board: Revisiting the Design of Optimal Location Privacy-preserving Mechanisms
Simon Oya, Carmela Troncoso, Fernando Pérez-González
In the last years we have witnessed the appearance of a variety of strategies to design optimal location privacy-preserving mechanisms, in terms of maximizing the adversary's expec…
Derivation of the Asymptotic Eigenvalue Distribution for Causal 2D-AR Models under Upscaling
David Vázquez-Padín, Fernando Pérez-González, Pedro Comesaña-Alfaro
This technical report describes the derivation of the asymptotic eigenvalue distribution for causal 2D-AR models under an upscaling scenario. Specifically, it tackles the analytica…
On Ring Learning with Errors over the Tensor Product of Number Fields
Alberto Pedrouzo-Ulloa, Juan Ramón Troncoso-Pastoriza, Fernando Pérez-González
The "Ring Learning with Errors" (RLWE) problem was formulated as a variant of the "Learning with Errors" (LWE) problem, with the purpose of taking advantage of an additional algebr…
Number Theoretic Transforms for Secure Signal Processing
Alberto Pedrouzo-Ulloa, Juan Ramón Troncoso-Pastoriza, Fernando Pérez-González
Multimedia contents are inherently sensitive signals that must be protected whenever they are outsourced to an untrusted environment. This problem becomes a challenge when the untr…
Report on Dirty Paper Coding Estimation with multidimensional lattices
Pedro Comesaña-Alfaro, Fernando Pérez-González
In this report we include some derivations on a channel estimation method based on the use of Dirty Paper Coding. Specifically, we analyze the proposed method, named Dirty Paper-ba…
Fast sequential forensic camera identification
Fernando Pérez-González, Iria González-Iglesias, Miguel Masciopinto +1
Two sequential camera source identification methods are proposed. Sequential tests implement a log-likelihood ratio test in an incremental way, thus enabling a reliable decision wi…
A highly optimized flow-correlation attack
Juan A. Elices, Fernando Perez-Gonzalez
Deciding that two network flows are essentially the same is an important problem in intrusion detection and in tracing anonymous connections. A stepping stone or an anonymity netwo…
The Flow Fingerprinting Game
Juan A. Elices, Fernando Perez-Gonzalez
Linking two network flows that have the same source is essential in intrusion detection or in tracing anonymous connections. To improve the performance of this process, the flow ca…
Linking Correlated Network Flows through Packet Timing: a Game-Theoretic Approach
Juan A. Elices, Fernando Perez-Gonzalez
Deciding that two network flows are essentially the same is an important problem in intrusion detection or in tracing anonymous connections. A stepping stone or an anonymity networ…