With the rapid development of wired and wireless networks, the security needs within network systems are becoming increasingly intensive owing to the continuous development of new applications. Existing cryptography a...With the rapid development of wired and wireless networks, the security needs within network systems are becoming increasingly intensive owing to the continuous development of new applications. Existing cryptography algorithms differ from each other in many ways including their security complexity, size of the key and words operated on, and processing time. Nevertheless, the main factors that prioritize an encryption algorithm over others are its ability to secure and protect data against attacks and its speed and efficiency. In this study, a reconfigurable Co-Design multi-purpose security design with very low complexity, weight, and cost, has been developed using Extended Tiny Encryption Algorithm (XTEA) data encryption standards. The paper aims to discuss issues and present solutions associated with this system, as well as compare the Co-Design implementation approach with Full-Hardware and Full-Software solutions. The main contribution that this paper offers is the profiling of XTEA cryptographic algorithm to reach more satisfactory understanding of its computation structure that leads to fully software, fully hardware, beside the co-design implementations all together, of this light weight encryption algorithm.展开更多
The hardware optimization technique of mono similarity system generation is presented based on hardware/software(HW/SW) co design.First,the coarse structure of sub graphs' matching based on full customized HW...The hardware optimization technique of mono similarity system generation is presented based on hardware/software(HW/SW) co design.First,the coarse structure of sub graphs' matching based on full customized HW/SW co design is put forward.Then,a universal sub graphs' combination method is discussed.Next,a more advanced vertexes' compression algorithm based on sub graphs' combination method is discussed with great emphasis.Experiments are done successfully with perfect results verifying all the formulas and the methods above.展开更多
Precise and efficient wavefront control is essential for next-generation photonic systems.While metasurfaces provide a powerful platform,their implementation—particularly in the terahertz(THz)regime,which is vital fo...Precise and efficient wavefront control is essential for next-generation photonic systems.While metasurfaces provide a powerful platform,their implementation—particularly in the terahertz(THz)regime,which is vital for 6G communications,optical computing,and biomedical imaging—is often constrained by limited structural tunability,computationally intensive full-wave simulations,and complex fabrication processes.Here,we present a height–slope co-design strategy that enables the scalable 3D printing of high-performance,multifunctional metasurfaces.By introducing sidewall slope as an additional structural degree of freedom,the accessible design space is significantly expanded,enabling electromagnetic functionalities beyond those achievable with conventional width-or height-only modulation.A compact analytical model replaces brute-force parameter sweeps,accelerating the design process by over two orders of magnitude while maintaining high accuracy.Additionally,slope-assisted resonance tuning improves transmission efficiency,and integration with coating techniques enables broadband amplitude modulation and asymmetric transmission.The proposed strategy is experimentally validated through the design,fabrication,and characterization of a series of THz metasurfaces exhibiting enhanced beam control,mechanical stability,and spectral versatility.This geometric co-design approach provides a scalable and generalizable methodology for the rapid realization of multifunctional photonic components.展开更多
文摘With the rapid development of wired and wireless networks, the security needs within network systems are becoming increasingly intensive owing to the continuous development of new applications. Existing cryptography algorithms differ from each other in many ways including their security complexity, size of the key and words operated on, and processing time. Nevertheless, the main factors that prioritize an encryption algorithm over others are its ability to secure and protect data against attacks and its speed and efficiency. In this study, a reconfigurable Co-Design multi-purpose security design with very low complexity, weight, and cost, has been developed using Extended Tiny Encryption Algorithm (XTEA) data encryption standards. The paper aims to discuss issues and present solutions associated with this system, as well as compare the Co-Design implementation approach with Full-Hardware and Full-Software solutions. The main contribution that this paper offers is the profiling of XTEA cryptographic algorithm to reach more satisfactory understanding of its computation structure that leads to fully software, fully hardware, beside the co-design implementations all together, of this light weight encryption algorithm.
文摘The hardware optimization technique of mono similarity system generation is presented based on hardware/software(HW/SW) co design.First,the coarse structure of sub graphs' matching based on full customized HW/SW co design is put forward.Then,a universal sub graphs' combination method is discussed.Next,a more advanced vertexes' compression algorithm based on sub graphs' combination method is discussed with great emphasis.Experiments are done successfully with perfect results verifying all the formulas and the methods above.
基金National Natural Science Foundation of China(61875093)。
文摘Precise and efficient wavefront control is essential for next-generation photonic systems.While metasurfaces provide a powerful platform,their implementation—particularly in the terahertz(THz)regime,which is vital for 6G communications,optical computing,and biomedical imaging—is often constrained by limited structural tunability,computationally intensive full-wave simulations,and complex fabrication processes.Here,we present a height–slope co-design strategy that enables the scalable 3D printing of high-performance,multifunctional metasurfaces.By introducing sidewall slope as an additional structural degree of freedom,the accessible design space is significantly expanded,enabling electromagnetic functionalities beyond those achievable with conventional width-or height-only modulation.A compact analytical model replaces brute-force parameter sweeps,accelerating the design process by over two orders of magnitude while maintaining high accuracy.Additionally,slope-assisted resonance tuning improves transmission efficiency,and integration with coating techniques enables broadband amplitude modulation and asymmetric transmission.The proposed strategy is experimentally validated through the design,fabrication,and characterization of a series of THz metasurfaces exhibiting enhanced beam control,mechanical stability,and spectral versatility.This geometric co-design approach provides a scalable and generalizable methodology for the rapid realization of multifunctional photonic components.
