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RAM-basaed PUFs: Comparing Static- and Dynamic Random Access Memory

Pascal Ahr; Marjan Noushinfar; Christoph Lipps
In: Workshop on Next Generation Networks and Applications. Workshop on Next Generation Networks and Applications (NGNA-2021), 12/2021.


Integrity, reliability and trustworthiness have always been the basic requirements for secure systems, including doubtlessly authenticated participants. This is increasingly relevant as systems become distributed and even more challenging as devices involved become low-resource Industrial Internet of Thing (IIoT) devices. Nevertheless, more efficient and secure techniques are required to ensure confidentiality and privacy. A promising solution is offered by Physical Layer Security (PhySec), in particular by Physically Unclonable Functions (PUFs). Their functional principle: the exploitation of the unique characteristics of semiconductors is inherent in both Static Random Access Memorys (SRAMs) and Dynamic Random Access Memorys (DRAMs). The paper discusses the properties of both types and compares them in terms of suitability for security-related applications.