28 citations · 217 across the 44 of their papers we have counts for
14 papers · 1 filter
Using Linear Difference Equations to Model Nonlinear Cryptographic Sequences
P. Caballero-Gil, A. Fúster-Sabater, M. E. Pazo-Robles
A new class of linear sequence generators based on cellular automata is here introduced in order to model several nonlinear keystream generators with practical applications in symm…
Self-Organized Authentication Architecture for Mobile Ad-hoc Networks
P. Caballero-Gil, C. Caballero-Gil, J. Molina-Gil +1
This work proposes a new architecture, called Global Authentication Scheme for Mobile Ad-hoc Networks (GASMAN), for fully distributed and self-organized authentication. In this pap…
Flexible Authentication in Vehicular Ad hoc Networks
P. Caballero-Gil, C. Caballero-Gil, J. Molina-Gil +1
A Vehicular Ad-Hoc Network (VANET) is a form of Mobile ad-hoc network, to provide communications among nearby vehicles and between vehicles and nearby fixed roadside equipment. The…
Stimulating Cooperation in Self-Organized Vehicular Networks
P. Caballero-Gil, J. Molina-Gil, C. Hernández-Goya +1
A Vehicular Ad-hoc NETwork (VANET) is a special form of Mobile Ad-hoc Network designed to provide communications among nearby vehicles and between vehicles and nearby fixed roadsid…
On the Use of Cellular Automata in Symmetric Cryptography
Amparo Fuster-Sabater, Pino Caballero-Gil
In this work, pseudorandom sequence generators based on finite fields have been analyzed from the point of view of their cryptographic application. In fact, a class of nonlinear se…
Self-Organized Authentication in Mobile Ad-hoc Networks
P. Caballero-Gil, C. Hernández-Goya
This work proposes a new distributed and self-organized authentication scheme for Mobile Ad-hoc NETworks (MANETs). Apart from describing all its components, special emphasis is pla…
A Simple Attack on Some Clock-Controlled Generators
P. Caballero-Gil, A. Fúster-Sabater
We present a new approach to edit distance attacks on certain clock-controlled generators, which applies basic concepts of Graph Theory to simplify the search trees of the original…
New Attack Strategy for the Shrinking Generator
Pino Caballero-Gil, Amparo Fúster-Sabater, M. Eugenia Pazo-Robles
This work shows that the cryptanalysis of the shrinking generator requires fewer intercepted bits than what indicated by the linear complexity. Indeed, whereas the linear complexit…
Linear Cellular Automata as Discrete Models for Generating Cryptographic Sequences
Pino Caballero-Gil, Amparo Fúster-Sabater, Oscar Delgado-Mohatar
In this paper, we develop a new cellular automata-based linear model for several nonlinear pseudorandom number generators with practical applications in symmetric cryptography. Suc…
A Rational Approach to Cryptographic Protocols
P. Caballero-Gil, C. Hernández-Goya, C. Bruno-Castañeda
This work initiates an analysis of several cryptographic protocols from a rational point of view using a game-theoretical approach, which allows us to represent not only the protoc…
Linear solutions for cryptographic nonlinear sequence generators
A. Fúster-Sabater, P. Caballero-Gil
This letter shows that linear Cellular Automata based on rules 90/150 generate all the solutions of linear difference equations with binary constant coefficients. Some of these sol…
On the Design of Cryptographic Primitives
Pino Caballero-Gil, Amparo Fúster-Sabater
The main objective of this work is twofold. On the one hand, it gives a brief overview of the area of two-party cryptographic protocols. On the other hand, it proposes new schemes…
Secret Sharing Based on a Hard-on-Average Problem
P. Caballero-Gil, C. Hernández-Goya
The main goal of this work is to propose the design of secret sharing schemes based on hard-on-average problems. It includes the description of a new multiparty protocol whose main…
Global Linear Complexity Analysis of Filter Keystream Generators
A. Fúster-Sabater, P. Caballero-Gil
An efficient algorithm for computing lower bounds on the global linear complexity of nonlinearly filtered PN-sequences is presented. The technique here developed is based exclusive…