Auflistung nach Autor:in "Chaabouni, Rafik"
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- KonferenzbeitragThe extended access control for machine readable travel documents(BIOSIG 2009: biometrics and electronic signatures, 2009) Chaabouni, Rafik; Vaudenay, SergeMachine Readable travel documents have been rapidly put in place since 2004. The initial standard was made by the ICAO and it has been quickly followed by the Extended Access Control (EAC). In this paper we discuss about the evolution of these standards and more precisely on the evolution of EAC. We intend to give a realistic survey on these standards. We discuss about their problems, such as the inexistence of a clock in the biometric passports and the absence of a switch preventing the lecture of a closed passport. We also look at the issue with retrocompatibility that could be easily solved and the issue with terminal revocation that is harder.
- KonferenzbeitragSolving terminal revocationin EAC by augmenting terminal authentication(BIOSIG 2013, 2013) Chaabouni, RafikIn this paper we propose a solution to enable an accurate terminal revocation in the Extended Access Control (EAC). Chaabouni and Vaudenay in [CV09] pointed out the need for an accurate revocation procedure, but failed to provide a complete solution description. We aim at filling this gap. Our solution relies on augmenting terminal authentication with a t-out-ofthreshold signature provided by neighboring terminals. These terminals will be in charge of checking the revocation status of the requested terminal. As Terminals have a real clock embedded and more computational power than Machine Readable Travel Documents (MRTDs), they are better suited for checking revocation status.