All‐in‐One Compression and Encryption Engine Based on Flexible Polyimide Memristor

Abstract

It is anticipated that the rapid development of the Internet of Things (IoT) will improve the quality of human life. Nonetheless, large amounts of data need to be replicated, stored, processed, and shared, posing formidable challenges to communication bandwidth and information security. Herein, it is reported that polyimide (PI) threshold‐switching memristors exhibit Gaussian conductance and randomly set voltage distribution with nonideal properties to create a compression and encryption engine with a single chip. The Gaussian conductance distribution is used to achieve compressed sensing (CS) to integrate encryption into compression, and the spontaneous formation of the one‐time‐sampling measurement matrix satisfies absolute security. Moreover, the bitstreams generated by randomly distributed set voltages are used to diffuse the ciphertext from CS to improve security. The engine is shown to be secure even if the eavesdropper knows both the plaintext and the corresponding ciphertext. It has compression performance advantages that take both efficiency and security into account. In addition, due to the superior high temperature and mechanical properties of PI, the engine can continue to function normally in harsh environments. Herein, an excellent solution is offered for ensuring the efficiency and security of IoT.

Memristor-Based Signal Processing for Compressed Sensing

“…The results demonstrate that TSO has a higher compression ratio and lower error rate in implementing a CS scheme. Furthermore, Wang et al [91] developed a polyimide memristor to realize CS. The conductance of the device exhibits a Gaussian distribution when returning from an LRS to HRS, which can be used to construct a conductance matrix as a measurement matrix in CS.…”

“…Although changing the measurement matrix can resist CPA and achieve perfect security, programming the memristor conductance can be costly. Wang et al [91] proposed a solution in which the conductance of volatile memristors changes each time it returns to the HRS. Importantly, it can spontaneously return to the HRS, enabling the implementation of OTS pad encryption for perfect security.…”

Artificial Touch Neurons Based on Starch Memristors and Hydrogel Sensors

“…In recent years, several major breakthroughs have been made in combining advanced biosensing and neuromorphic engineering techniques. − In particular, different neuromorphic systems based on field-effect transistor synaptic devices have been developed for tactile simulation . For example, Zhu et al used piezoresistive sensors to convert a pressure stimulus into an electrical signal that is transmitted through a soft ion conductor to an indium tungsten oxide synaptic transistor.…”

Scalable Fabrication of Lightweight, Heat‐Resistant, and Controllable Sizes Polyimide Hollow Microspheres

“…Polyimide (PI) is a high-performance aromatic heterocyclic polymer with benzene rings and imide rings, which provide excellent heat resistance, radiation resistance, flame-retardant, and chemical stability. [4,[14][15][16][17] PI hollow microspheres (PIHMs) possess low bulk density and low dielectric constant, which have potential applications in heat insulation, energy storage, radiation resistance, wave absorption, and functional composite DOI: 10.1002/macp.202300144 materials. [18][19][20][21][22] Up to now, the preparation of PIHMs includes templates, emulsion, precipitation polymerization, self-assembly, and electrospray methods.…”