Concept

Autorité de certification

Publications associées (42)

Cryptography in radio frequency identification and fair exchange protocols

This PhD thesis focuses on fair exchange protocols and radio frequency identification protocols. Fair exchange stems from a daily life problem: how can two people exchange objects (material or immaterial) fairly, that is, without anyone being hurt in the e ...

EPFL2005

DICTATE: DIstributed CerTification Authority with probabilisTic frEshness for Ad Hoc Networks

Jean-Pierre Hubaux, Jun Luo, Patrick Eugster

Securing ad hoc networks is notoriously challenging, notably due to the lack of an on-line infrastructure. In particular, key management is a problem that has been addressed by many researchers but with limited results. In this paper, we consider the case ...

2004

Location verification and key management in wireless networks

Srdan Capkun

This thesis is primarily concerned with two security mechanisms for wireless networks: location verification and key management. These mechanisms are potential building blocks in the security architectures of a range of applications. Under location verific ...

EPFL2004

Truthful Reputation Information in Electronic Markets without Independent Verification

Boi Faltings, Radu Jurca

Reputation mechanisms offer an efficient way of building the necessary level of trust in electronic markets. In the absence of independent verification authorities that can reveal the true outcome of a ransaction, market designers have to insure that it is ...

Swiss Federal Institute of Technology (EPFL)2004

Self-organized public-key management for mobile ad hoc networks

Jean-Pierre Hubaux, Levente Buttyan, Srdan Capkun

In contrast with conventional networks, mobile ad hoc networks usually do not provide on-line access to trusted authorities or to centralized servers and they exhibit frequent partitioning due to link and node failures and to node mobility. For these reaso ...

2003

The Security of DSA and ECDSA

Serge Vaudenay

DSA and ECDSA are well established standards for digital signature based on the discrete logarithm problem. In this paper we survey known properties, certification issues regarding the public parameters, and security proofs. ECDSA also includes a standard ...

2003

Self-Organized Public-Key Management for Mobile Ad Hoc Networks

Jean-Pierre Hubaux, Levente Buttyan, Srdan Capkun

In contrast with conventional networks, mobile ad hoc networks do not provide on-line access to trusted authorities or to centralized servers. For this reason, key management is particularly difficult to implement in such networks. The solutions published ...

2002

Small Worlds in Security Systems: an Analysis of the PGP Certificate Graph

Jean-Pierre Hubaux, Levente Buttyan, Srdan Capkun

We propose a new approach to securing computer networks. With this approach, we achieve security in a fully self-organized manner; by this we mean that to secure a computer network, a security system does not require any kind of certification authority or ...

2002

Towards a composition model problem based on IEC61850

Alain Wegmann, Otto Preiss

In order to define a real-world model problem for research work in the area of predictable assembly of certifiable software components, this paper introduces the substation automation domain, as a representative for the wide spectrum of data acquisition an ...

2002

Transaction Reordering in Replicated Databases

Rachid Guerraoui, André Schiper, Fernando Pedone

Transaction Reordering in Replicated Databases F.Pedone, R.Guerraoui and A.Schiper This paper presents a fault-tolerant lazy replication protocol that ensures 1-copy serializability at a relatively low cost. Unlike eager replication approaches, our protoco ...

1997

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