pHGen: A pH-Based Key Generation Mechanism Using ISFETs

Autor:	Moussavi, Elmira, Sisejkovic, Dominik, Brings, Fabian, Kizatov, Daniyar, Singh, Animesh, Vu, Xuan Thang, Ingebrandt, Sven, Leupers, Rainer, Pachauri, Vivek, Merchant, Farhad
Rok vydání:	2022
Předmět:	Computer Science - Emerging Technologies
Druh dokumentu:	Working Paper
Popis:	Digital keys are a fundamental component of many hardware- and software-based security mechanisms. However, digital keys are limited to binary values and easily exploitable when stored in standard memories. In this paper, based on emerging technologies, we introduce pHGen, a potential-of-hydrogen (pH)-based key generation mechanism that leverages chemical reactions in the form of a potential change in ion-sensitive field-effect transistors (ISFETs). The threshold voltage of ISFETs is manipulated corresponding to a known pH buffer solution (key) in which the transistors are immersed. To read the chemical information effectively via ISFETs, we designed a readout circuit for stable operation and detection of voltage thresholds. To demonstrate the applicability of the proposed key generation, we utilize pHGen for logic locking -- a hardware integrity protection scheme. The proposed key-generation method breaks the limits of binary values and provides the first steps toward the utilization of multi-valued voltage thresholds of ISFETs controlled by chemical information. The pHGen approach is expected to be a turning point for using more sophisticated bio-based analog keys for securing next-generation electronics. Comment: Accepted in HOST 2022
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2202.12085 Zobrazit plný text záznamu View this record from Arxiv