Logic Locking based Trojans: A Friend Turns Foe

• URL: http://arxiv.org/abs/2309.15067v1
• Date: Tue, 26 Sep 2023 16:55:42 GMT
• Title: Logic Locking based Trojans: A Friend Turns Foe
• Authors: Yuntao Liu, Aruna Jayasena, Prabhat Mishra, Ankur Srivastava,
• Abstract summary: A common structure in many logic locking techniques has desirable properties of hardware Trojans (HWT) We then construct a novel type of HWT, called Trojans based on Logic Locking (TroLL), in a way that can evade state-of-the-art ATPG-based HWT detection techniques.
• Score: 4.09675763028423
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Logic locking and hardware Trojans are two fields in hardware security that have been mostly developed independently from each other. In this paper, we identify the relationship between these two fields. We find that a common structure that exists in many logic locking techniques has desirable properties of hardware Trojans (HWT). We then construct a novel type of HWT, called Trojans based on Logic Locking (TroLL), in a way that can evade state-of-the-art ATPG-based HWT detection techniques. In an effort to detect TroLL, we propose customization of existing state-of-the-art ATPG-based HWT detection approaches as well as adapting the SAT-based attacks on logic locking to HWT detection. In our experiments, we use random sampling as reference. It is shown that the customized ATPG-based approaches are the best performing but only offer limited improvement over random sampling. Moreover, their efficacy also diminishes as TroLL's triggers become longer, i.e., have more bits specified). We thereby highlight the need to find a scalable HWT detection approach for TroLL.

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