Étude des modes de perturbation et susceptibilité des circuits numériques aux collisions de particules et aux attaques laser

Abstract : More and more sensitive data are stored inside smart cards, like bank account or car access codes. Recently, these security circuits have become a target for hackers who try to abuse these data. To achieve this goal, these attackers use the state of the art technologies like fault injection. To comply with the smart card market requirements, designers have to build protections against these attacks while keeping design costs as low as possible. These constraints should lead to a cost-efficient design and benefit from dedicated automatic protection methodologies. In this thesis we first study radiation sources able to tamper with silicon circuit behavior, and then we reveal similarities between laser attacks and radiation effects on a circuit. Then we show the specificities of secure circuit design and the spectrum of attacks used by hackers. The third part characterizes Single Event Transients (SET). A design methodology is proposed and implemented in two circuits, one dedicated to measuring laser-induced SET duration in logic gates, the other dedicated to measuring gate sensitivity to neutrons. This work concludes the review of results obtained after a laser shooting experiment campaign.
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Damien Leroy. Étude des modes de perturbation et susceptibilité des circuits numériques aux collisions de particules et aux attaques laser. Autre. Université Paul Verlaine - Metz, 2006. Français. ⟨NNT : 2006METZ028S⟩. ⟨tel-01752450⟩

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