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International audienceThis paper discusses strategies for the electrical,integrated implementation of a novel security tool termed SIMPL system,which was introduced in [1]. SIMPL systems are a public key version ofPhysical Unclonable Functions (PUFs). Like a PUF, each SIMPL system S isphysically unique and non-reproducible, and implements an individualfunction FS. In opposition to a PUF, every SIMPL system S possesses apublicly known numerical description D(S), which allows its digitalsimulation and prediction. However, any such simulation must work at adetectably lower speed than the real-time behavior of S. As argued in[1], SIMPL systems have practicality and security advantages over PUFs,Certificates of Authenticity (COAs), Physically Obfuscated Keys (POKs),and also over standard mathematical cryptotechniques. This manuscriptfocuses on electrical, integrated realizations of SIMPL systems, andproposes two potential candidates: SIMPL systems derived from specialSRAM-architectures (so-called "skew designs" of SRAM cells), andimplementations based on analog computing arrays called CellularNon-Linear Networks (CNNs)

Towards Electrical, Integrated Implementations of SIMPL Systems