After some recent breaks presented in the technical literature, it has become of paramount importance to gain a deeper understanding of the robustness and weaknesses of cryptographic hash functions. In particular, in the ...

En aquest projecte s’estudien els costos d’execució d’algorismes criptogràfics a dispositius de mà com poden ser les agendes electròniques. L’objectiu final d’aquest estudi és determinar quins algoritmes són millors per ...

Este proyecto se pretende realizar un estudio de los sistemas de difusión de televisión de pago que hay en funcionamiento actualmente y en la medida de lo posible, proponer un nuevo sistema que haga uso de los esquemas ...

[ANGLÈS] The purpose of this project is to review the current state of cryptographic systems, focusing in signatures schemes based on elliptic curves (such as Blind Signature, Aggregate Signature or Multisignature) and to ...

This paper aims at presenting a new countermeasure against Side-Channel Analysis (SCA) attacks, whose implementation is based on a hardware-software co-design. The hardware architecture consists of a microprocessor, which ...

We characterize the traceability properties of linear codes. It is well known that any code of length n and minimum distance d is a c-TA code if c 2¿<¿n/(n¿-¿d). In this paper, we show that a less restrictive condition can ...

Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...

This project has studied and analized an attack by injection of errors against the AES encryption scheme currently existing in literature. The AES symmetric cryptosystem is perhaps the most widely used today. The idea of ...