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Attack on optical cryptosystems by skip connection networks

OPTICS EXPRESS 2024年第11期32卷 19424-19437页

作者： Wang, Jiaao Wang, Dongfei Beijing Inst Graph Commun Sch Informat Engn Beijing 102600 Peoples R China Nnchang Inst Technol Nanchang 330044 Jiangxi Peoples R China

optical encryption methods, due to their efficient operation speed and parallel processing capabilities, hold significant importance in securing multidimensional and large -volume data. Enhancing the security of optical cryptosystems from the perspective of cryptanalysis holds significant importance currently. Presently, attack methods against optical encryption are complex, and the effectiveness of these attacks is insufficient. Security analysis solutions face limitations in both breadth and depth. Therefore, this paper proposes an attack on optical cryptosystems based on a skip connection network, demonstrating the susceptibility of optical cryptosystems to attacks based on neural network algorithms. The network model is trained on plaintext-ciphertext pairs, fitting equivalent keys without various additional conditions. It approximates plaintext information in high -dimensional space, directly obtaining corresponding plaintext through ciphertext information, expanding the applicability and enhancing the effectiveness of the attack scheme. Finally, the feasibility and effectiveness of the attack scheme were verified through computer simulations. The experiments indicate that the method proposed in this paper has low computational complexity, wide applicability, produces high -quality decrypted images, and high decipherment accuracy. This provides a universal approach for analyzing the security of various optical cryptosystems from the perspective of chosen plaintext attacks.

关键词： Computer simulation Image encryption Light beams optical encryption optical security Phase retrieval

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Clipping discrete multi-tone for peak-power-constraint IM/DD optical systems

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Science China(information Sciences) 2023年第5期66卷 227-237页

作者： Ji ZHOU Liangchuan LI Jiale HE Xiaofeng LU Yu BO Guanyu WANG Yuanda HUANG Gengchen LIU Yanzhao LU Shecheng GAO Yuanhua FENG Shancheng ZHAO Weiping LIU Changyuan YU Zhaohui LI Department of Electronic Engineering College of Information Science and Technology Jinan University Optical Research Department Huawei Technologies Co. Ltd. Department of Electronic and Information Engineering The Hong Kong Polytechnic University Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)

High peak-to-average power ratio(PAPR) is a major drawback of discrete multi-tone(DMT) in peak-power-constraint(PPC) intensity-modulation/direct-detection(IM/DD) optical systems. Symmetric clipping operation is a frequently-used and practical method for mitigating the PAPR of the DMT ***, clipping noise is inevitably induced by the symmetric clipping operation, thereby deteriorating the system's performance. In this paper, we study the statistical characteristics of the clipping noise in *** on the statistical characteristics, clipping-noise-cancellation(CNC) algorithms are proposed to mitigate the clipping noise in the clipping DMT systems. Theoretically, the clipping noise can be completely removed using the low-density-parity-check-assisted CNC algorithm(LDPC-assisted CNC algorithm). To verify the superiority of the clipping DMT with the CNC algorithm, we conduct an experiment with a50 Gb/s DMT system using 10G-class commercial devices for the scenario of PPC passive optical *** receiver sensitivity of the clipping DMT system with the CNC algorithm can reach-24 d Bm at a 20%soft-decision forward-error-correction limit, which is 2.5 d B higher than that of the DMT system without clipping operation. The clipping operation and the CNC algorithm are added after the original digital signal processing, thereby demonstrating the potential to efectively overcome the drawback in DMT signals and other high-PAPR signals.

关键词： discrete multi-tone peak-to-average power ratio peak-power constraint clipping-noise cancellation intensity-modulation/direct-detection optical systems

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Design and Study of Passive optical Logic Element 'AND' for Application in Photonic Integrated Circuits

Design and Study of Passive Optical Logic Element 'AND' for ...

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2025 systems of Signals Generating and processing in the Field of on Board Communications, SOSG 2025

作者： Malygin, Ivan Lukinukh, Ilya Korotkova, Elena Loginovskikh, Vitaliy Lyubin, Maxim Institute of Radioelectronics and Informational Technologies Ural Federal University Yekaterinburg Russia

ISBN: (纸本)9798331532635

The continuous increase in operating frequencies in information processing and transmission systems, as well as the development and improvement of the element base for the implementation of such systems, naturally led to the emergence of photonics as a direction using optical signals where electrical signals were traditionally used. At the same time, the emergence of new technologies and devices is associated with their high cost, which limits their distribution and implementation in modern technological processes. At this article offered to your attention is devoted to the development and study of a very simple passive optical logic element' AND', which can be used in the design of photonic integrated circuits or in the construction of optical computing devices for various purposes. © 2025 IEEE.

关键词： Photonic integrated circuits

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DRAFT - DISTILLED RECURRENT ALL-PAIRS FIELD TRANSFORMS FOR optical FLOW 31

DRAFT - DISTILLED RECURRENT ALL-PAIRS FIELD TRANSFORMS FOR O...

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2024 International conference on Image processing

作者： Tchenko, Yanick Christian Abdelkader, Hicham Hadj Tabia, Hedi Univ Paris Saclay Univ Evry IBISC Rue Joliot Curie Gif Sur Yvette France

ISBN: (纸本)9798350349405;9798350349399

This paper addresses the challenge of utilizing learning-based algorithms for 3D scene reconstruction on resource-constrained end-user devices. Although integrating deep learning methods into the reconstruction pipeline has demonstrated superior performance to classical techniques, the resulting large models could be impractical for resource-limited devices. We propose an efficient solution by introducing a method to compress deep learning models used in 3D reconstruction workflows. Our approach, named DRAFT, employs knowledge distillation (KD), adapted and extended for complex feature and context extraction tasks related to optical flow. New distillation components based on algebraic sign-pattern matrices (SPM) and inertia enhance the KD process. Empirical validation on KITTI and Sintel benchmark datasets reveals that DRAFT consistently achieves comparable or superior performance to state-of-the-art models such as RAFT, FlowID, GMFlow, and Anyflow while significantly reducing model size. This contribution enhances the feasibility of deploying learning-based 3D scene reconstruction frameworks on edge systems. It contributes to the discourse on resource-efficient deep learning methodologies, particularly for optical flow and stereo matching. Our code is available at https://***/christian-tchenko/***.

关键词： optical flow Deep Learning knowledge distillation stereo matching 3D reconstruction

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Experimental Study of Applying algorithms Based on Neural Networks to Enhance the Efficiency of Telecommunication systems

Experimental Study of Applying Algorithms Based on Neural Ne...

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2024 International Russian Automation conference, RusAutoCon 2024

作者： Kolpakov, A.A. Beilekchi, D.V. Vladimir State university Vladimir Russia

The research is carried out in order to develop algorithms for the software of devices used in telecommunication systems of dispatch and operational command communication. The use of modern methods and algorithms for information processing using neural networks can significantly improve such characteristics as speech intelligibility and ease of use. The main purpose of the study is to identify the design features of speech recognition units based on single-board computers for further implementation in loudspeaker communication systems. The results of calculating the metrics of the speech recognition library under study, as well as for a number of data smoothing algorithms, are presented, and their effectiveness is evaluated on single-board computers. The results of the study are planned to be used to modernize existing and develop new devices for telecommunication systems of dispatching and operational command communication. © 2024 IEEE.

关键词： dispatch communication loudspeaker communication neural networks sound processing telecommunication systems

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Lightweight Symmetric Key Exchange Protocols for Enhanced Security in Elastic optical Fiber Communication 3rd

Lightweight Symmetric Key Exchange Protocols for Enhanced Se...

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3rd International conference on Network Security and Blockchain Technology

作者： Amin, Ruhul DR SPM IIIT Naya Raipur Dept Comp Sci & Engn Chhattisgarh India

ISBN: (纸本)9789819780501;9789819780518

Modern communication networks rely on optical fiber networks to transmit various sensitive information among different organizations. With the evolution of fifth-generation telecom technologies, such as intelligent hyper-connected networks, the concentration of all transmission information on optical communication networks has become prevalent. Consequently, ensuring the security of optical transmission devices has become paramount. Establishing secure communication between optical access network nodes presents a significant challenge due to reported instances of hacking into optical cables, rendering the optical communication medium vulnerable to eavesdropping. Therefore, there is a pressing need for complementary security measures. This paper proposes a lightweight yet effective secure key distribution strategy to enhance the network security of optical communication. The proposed Key Exchange (KE) protocols, focusing on symmetric key sharing (SKS) and Secure Key Update (SKU), are subjected to Scyther-based security simulations to demonstrate their security. Additionally, an informal security analysis is provided to showcase the resilience of the SKS and SKU algorithms against various security attacks. Computational benchmarks show that both algorithms require fewer computational, communication, and storage resources during the key generation phase compared to related authentication protocols.

关键词： Cryptography optical fiber communication Key Exchange (KE) Symmetric encryption key Random Key Generation (RKG)

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Quantum optical Scatterings Applied to Photonics

Quantum Optical Scatterings Applied to Photonics

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conference on Quantum Nanophotonic Materials, devices, and systems

作者： de Faria, A. C. Amaro, Jr. Mazur, V. T. Woitovetch, G. Max PlanckInst Gravitat Phys MPI AEI D-114476 Potsdam Germany Fed Technol Univ Parana UTFPR BR-85053525 Guarapuava PR Brazil

ISBN: (纸本)9781510679016;9781510679009

The interaction of light with matter can generate different types of scattering that can be applied to quantum optics, photonics and integrated optics appropriately. The generation of certain pulses in certain waveguides can produce certain nonlinear optical pulses with important properties such as low energy and information loss applied, for example, to communication systems and quantum information. The method we describe is based on the generation and propagation of nonlinear optical pulses in multidimensional material structures: waveguides in 1 dimension, planar systems in 2 dimensions and crystalline systems in 3 dimensions. These structures can be appropriately designed to generate nonlinear and quantum optical pulses depending on the crystal structure and electrical susceptibility of the material. These optical pulses can be appropriately characterized whose respective scattering signals can be identified and processed providing an application basis for emerging technologies for transmission and processing systems based on quantum optics and quantum computing.

关键词： Nonlinear optical fiber sensors Nonlinear optical Beams Signal Modeling Integrated Optics

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On board communications: systems of signals processing and radiofrequency applications

On board communications: systems of signals processing and r...

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2024 systems of Signals Generating and processing in the Field of on Board Communications, SOSG 2024

作者： Dymkova, S.S. Varlamov, Oleg V. Vienna Austria Moscow Technical University of Communications and Informatics Moscow Russia Institute of Radio and Information Systems Vienna Austria

ISBN: (纸本)9798350383614

The article discusses the main topics and results of the scientific conference "systems of signals generating and processing in the field of on board communications", in which leading industry experts annually exchange experience in the areas of: antennas and radio waves propagation, navigation and mathematical algorithms of an object Space orientation, radiofrequency applications, wire and optical communication and control systems, intelligent transport systems and digital signal processing in on-board radio systems. ©2024 IEEE.

关键词： Intelligent systems

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Research on SMA motor modelling and control algorithm for optical image stabilization

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MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOsystems-information STORAGE AND processing systems 2025年第6期31卷 1381-1400页

作者： Li, Chen Qu, Yingmin Song, Zhengxun Liu, Xinliang Liu, Weiwen Changchun Univ Sci & Technol Int Res Ctr Nano Handling & Mfg China Changchun 130022 Jilin Peoples R China Changchun Univ Sci & Technol Zhongshan Inst Zhongshan 528437 Guangdong Peoples R China Changchun Univ Sci & Technol Sch Elect & Informat Engn Changchun 130022 Jilin Peoples R China

Cameras play an increasingly important role in mobile devices and intelligent systems. With the development of technology, the resolution of the camera continues to improve and the images become much clearer. However, image quality is easily affected by lens shake. optical stabilization technology improves the shooting stability as well as image quality of mobile devices by overcoming image blur which is caused by lens shake. In the current camera modules of smart devices, the voice coil motor (VCM) drives the lens movement. However, the traditional VCMs contain permanent magnets, thus generating stray magnetic fields and affecting the quality of captured images. Compared with VCM technology, shape memory alloy (SMA) motors driven by shape memory alloys have the advantages, such as lighter weight, higher accuracy, greater thrust, and lower energy consumption. But there are still some issues with the current SMA motors. To begin with, there is a control problem of SMA wire, and the current control algorithms are difficult to achieve high-precision control of SMA wire. What's more, the strain range of SMA wires used in current SMA motors is limited, so their application in certain fields are restricted. A SMA motor with a larger shrinkage of SMA wire was designed, which could be used in larger lenses and whose application range was extended. Given the hysteresis effect of SMA, a Hammerstein-like model was established to describe the dynamic hysteresis characteristics of SMA. The Prandtl Ishlinskii model was used to describe the static hysteresis model of SMA, and the Nonlinear AutoRegressive network with eXogenous inputs (NARX) model was used to describe the dynamic model of SMA and predict its properties. A composite control scheme based on inverse compensation was designed to eliminate the dynamic hysteresis phenomenon of SMA, using the PI inverse model as the feed-forward controller and BP-FOPID as the feedback controller. In a gesture to address the problem of mul

关键词： Permanent magnets

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Numerical Performance Evaluation of 1 − 2 Sparse Reconstruction Using optical Analog Circuit

Numerical Performance Evaluation of 1 − 2 Sparse Reconstruc...

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2023 Asia Pacific Signal and information processing Association Annual Summit and conference, APSIPA ASC 2023

作者： Furusawa, Soma Hayashi, Kazunori Kameda, Kaito Hayakawa, Ryo Graduate School of Informatics Kyoto University Kyoto Japan Graduate School of Engineering Science Osaka University Osaka Japan

ISBN: (纸本)9798350300673

Iterative shrinkage thresholding algorithm (ISTA), fast ISTA (FISTA) and alternating direction method of multipliers (ADMM) based algorithm are well known convex optimization algorithms based on proximal splitting for 1 − 2 optimization problem in compressed sensing. In our previous study, aiming at the implementation with optical analog devices, we have proposed constant inertial FISTA (CIFISTA) and an approximated ADMM based algorithm, which do not require the operation of division. In this paper, we consider to realize those algorithms with optical analog devices and show concrete configurations of analog circuits using optical devices. We have conducted computer experiments to evaluate the performance of each algorithm, taking into account the effects of the additive noise introduced by optical amplifiers assuming the implementation using optical devices for common optical fiber communications systems. From the numerical results, it has been confirmed that both the proposed CIFISTA and the approximated ADMM based algorithm can achieve faster convergence than ISTA, while the degradation of the steady state mean squared error (MSE) due to the circuit noise is much smaller than that of the conventional ADMM algorithm. © 2023 IEEE.

关键词： Iterative methods

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