The security issues of mobile agent system have embarrassed its widespread implementation. The paper analyses communication security threats and countermeasures of mobile agent system and proposes a communication secu...The security issues of mobile agent system have embarrassed its widespread implementation. The paper analyses communication security threats and countermeasures of mobile agent system and proposes a communication security protocol of mobile agent system. It provides multifactor authentication, encryption transmission, and integrity protection of mobile agent.展开更多
Traditional wireless sensors still face challenges such as high power consumption and bulky signal transmission modules.In this work,we report a battery-free sensor via Maxwell’s displacement current for encrypted si...Traditional wireless sensors still face challenges such as high power consumption and bulky signal transmission modules.In this work,we report a battery-free sensor via Maxwell’s displacement current for encrypted signal transmission.The sensor employs an instantaneous discharge triboelectric nanogenerator(ID-TENG)featuring a dual-contact electrode structure.It enables rapid charge transfer and instantaneous current generation(~6 ms per cycle)and then high-frequency electromagnetic wave generation.The instantaneous discharge mechanism reduces the generated voltage to 100 V while maintainingμA-level current output,addressing critical safety concerns.By integrating a resistor‒inductor‒capacitor(RLC)equivalent circuit,the sensor achieves precise amplitude and frequency modulation of wireless signals.A series of inductors(0-50μH)is used to achieve wide frequency-domain regulation(3.91-16.97 MHz),and capacitor parallel regulation(0-50 pF)to achieve accurate regulation in the narrow frequency domain(1.95-2.63 MHz).The sensor illustrates 22 m of wireless transmission distance and sustained stability over 16,000 cycles.By pre-setting the frequency sequence of the signal as a password,the specific password transmits the specific information to realize the encryption of the wireless signal transmission.Finally,it is demonstrated to be used as a smart wireless keyboard,an interactive dance carpet and an encrypted vehicle control system with passivity,adaptability,scalability,and resistance to signal interference.展开更多
基金Supported by the National Natural Science Foundation of China (60673071)
文摘The security issues of mobile agent system have embarrassed its widespread implementation. The paper analyses communication security threats and countermeasures of mobile agent system and proposes a communication security protocol of mobile agent system. It provides multifactor authentication, encryption transmission, and integrity protection of mobile agent.
基金supported by the National Key R&D Program of China(No.2023YFB3208100)the National Natural Science Foundation of China(No.62174115,No.U21A20147)+3 种基金the Natural Science Foundation of Jiangsu Province of China(No.BK20240152)the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.24KJA430011)the Collaborative Innovation Center of Suzhou Nano Science&Technology,the 111 Projectthe Joint International Research Laboratory of Carbon-Based Functional Materials and Devices.
文摘Traditional wireless sensors still face challenges such as high power consumption and bulky signal transmission modules.In this work,we report a battery-free sensor via Maxwell’s displacement current for encrypted signal transmission.The sensor employs an instantaneous discharge triboelectric nanogenerator(ID-TENG)featuring a dual-contact electrode structure.It enables rapid charge transfer and instantaneous current generation(~6 ms per cycle)and then high-frequency electromagnetic wave generation.The instantaneous discharge mechanism reduces the generated voltage to 100 V while maintainingμA-level current output,addressing critical safety concerns.By integrating a resistor‒inductor‒capacitor(RLC)equivalent circuit,the sensor achieves precise amplitude and frequency modulation of wireless signals.A series of inductors(0-50μH)is used to achieve wide frequency-domain regulation(3.91-16.97 MHz),and capacitor parallel regulation(0-50 pF)to achieve accurate regulation in the narrow frequency domain(1.95-2.63 MHz).The sensor illustrates 22 m of wireless transmission distance and sustained stability over 16,000 cycles.By pre-setting the frequency sequence of the signal as a password,the specific password transmits the specific information to realize the encryption of the wireless signal transmission.Finally,it is demonstrated to be used as a smart wireless keyboard,an interactive dance carpet and an encrypted vehicle control system with passivity,adaptability,scalability,and resistance to signal interference.
