Hardware-Enabled Key Generation in Industry 4.0 Cryptosystems through Analog Hyperchaotic Signals  

作　　者：Borja Bordel Sánchez Fernando Rodríguez-Sela Ramón Alcarria Tomás Robles 

机构地区：[1]IT Department,Universidad Politecnica de Madrid,Madrid,28031,Spain [2]Department of Geospatial Engineering,Universidad Politecnica de Madrid,Madrid,28031,Spain

出　　处：《Computers, Materials & Continua》2025年第5期1821-1853,共33页计算机、材料和连续体(英文)

基　　金：supported by Comunidad de Madrid within the framework of the Multiannual Agreement with Universidad Politecnica de Madrid to encourage research by young doctors(PRINCE).

摘　　要：The Industry 4.0 revolution is characterized by distributed infrastructures where data must be continuously communicated between hardware nodes and cloud servers.Specific lightweight cryptosystems are needed to protect those links,as the hardware node tends to be resource-constrained.Then Pseudo Random Number Generators are employed to produce random keys,whose final behavior depends on the initial seed.To guarantee good mathematical behavior,most key generators need an unpredictable voltage signal as input.However,physical signals evolve slowly and have a significant autocorrelation,so they do not have enough entropy to support highrandomness seeds.Then,electronic mechanisms to generate those high-entropy signals artificially are required.This paper proposes a robust hyperchaotic circuit to obtain such unpredictable electric signals.The circuit is based on a hyperchaotic dynamic system,showing a large catalog of structures,four different secret parameters,and producing four high entropy voltage signals.Synchronization schemes for the correct secret key calculation and distribution among all remote communicating modules are also analyzed and discussed.Security risks and intruder and attacker models for the proposed solution are explored,too.An experimental validation based on circuit simulations and a real hardware implementation is provided.The results show that the random properties of PRNG improved by up to 11%when seeds were calculated through the proposed circuit.

关 键 词：Hyperchaotic circuits chaos synchronization hardware-supported technologies chaotic cryptosystems Industry 4.0 adaptative control 

分 类 号：TN918.4[电子电信—通信与信息系统]