Memristor Crossbar Architecture for Encryption, Decryption and More


A new technical paper titled “Tunable stochastic memristors for energy-efficient encryption and computing” was published by researchers at Seoul National University, Sandia National Laboratories, Texas A&M University and Applied Materials.


“Information security and computing, two critical technological challenges for post-digital computation, pose opposing requirements – security (encryption) requires a source of unpredictability, while computing generally requires predictability. Each of these contrasting requirements presently necessitates distinct conventional Si-based hardware units with power-hungry overheads. This work demonstrates Cu0.3Te0.7/HfO2 (‘CuTeHO’) ion-migration-driven memristors that satisfy the contrasting requirements. Under specific operating biases, CuTeHO memristors generate truly random and physically unclonable functions, while under other biases, they perform universal Boolean logic. Using these computing primitives, this work experimentally demonstrates a single system that performs cryptographic key generation, universal Boolean logic operations, and encryption/decryption. Circuit-based calculations reveal the energy and latency advantages of the CuTeHO memristors in these operations. This work illustrates the functional flexibility of memristors in implementing operations with varying component-level requirements.”

Find the technical paper here. Published March 2024.

Woo, K.S., Han, J., Yi, Si. et al. Tunable stochastic memristors for energy-efficient encryption and computing. Nat Commun 15, 3245 (2024). https://doi.org/10.1038/s41467-024-47488-x.


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