Smart Card Attack Tree and Attack Forest

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Abstract

The attack tree is an “and-or� tree where the want to be reached aims are on the top (roots of the tree) and the lines represent the ways threats could come from. The ‘AND’ lines must be happen together to reach the node, while among the ‘OR’ lines one is enough to be done. Each node could have a cost, a probability or even a ‘required tools’ value and it can be counted the cheapest way to node or even the most possible way.

The advantage of an attack tree is, that in the future every new attack type can be inserted or existing node values can be modified and the attack ways can be recounted. There is also possible to connect different attack trees. Smart card systems many times are used with biometry or cryptology, which could have their own attack tree.

The creation of a smart card attack tree could involve other not only directly but also indirectly influenced areas, producing the ‘attack forest’ of the information technology.

Speakers

• Zoli Kincses

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