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A Random Reversible Watermarking Scheme for Relational Data 1

引用

18th EAI International Conference on Security and Privacy in Communication Networks, SecureComm 2022

作者： Liu, Qiang Xian, Hequ Zhang, Jiancheng Liu, Kunpeng College of Computer Science and Technology Qingdao University Qingdao China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing China Shandong Computer Science Center Jinan China Shandong Zhengzhong Information Technology Co. Ltd. Jinan China

ISBN: (数字)9783031255380

ISBN: (纸本)9783031255373

In the era of Big Data, relational data is at risk of piracy and misuse when distributed, shared and used. The use of digital watermarking technology is a reliable way to protect the copyright of relational data. In order to protect the copyright of relational data and recover the original data, many reversible watermarking schemes have been proposed in recent years. But most of them cannot extract the watermark information completely under severe attacks. To address this problem, a random reversible watermarking scheme is proposed. Watermark embedding algorithm, watermark integrity checking algorithm, watermark detection algorithm and data recovery algorithm are designed. The watermark capacity is increased by embedding multiple watermarks in selected tuples, and the randomness of the watermark information distribution is increased by embedding unequal proportions of watermarks in different tuples. In extracting the watermark, the attacked bits are discarded to improve the accuracy of watermark detection. In addition, only a partition with complete watermark information is selected for watermark extraction. This not only improves the speed of watermark extraction, but also avoids the risk of key leakage from other partitions. The experimental results show that the complete watermark information can be extracted even when more than 90% of the tuples are under attack. © 2023, ICST Institute for Computer sciences, Social Informatics and Telecommunications engineering.

关键词： Copyrights

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Pixel+ and Pixel++: Compact and Efficient Forward-Secure Multi-Signatures for PoS Blockchain Consensus 33

Pixel+ and Pixel++: Compact and Efficient Forward-Secure Mul...

引用

33rd USENIX Security Symposium, USENIX Security 2024

作者： Wei, Jianghong Tian, Guohua Wang, Ding Guo, Fuchun Susilo, Willy Chen, Xiaofeng Xidian University China State Key Laboratory of Mathematical Engineering and Advanced Computing China College of Cyber Science Nankai University China School of Computing and Information Technology University of Wollongong Australia

ISBN: (纸本)9781939133441

Multi-signature schemes have attracted considerable attention in recent years due to their popular applications in PoS blockchains. However, the use of general multi-signature schemes poses a critical threat to the security of PoS blockchains once signing keys get corrupted. That is, after an adversary obtains enough signing keys, it can break the immutable nature of PoS blockchains by forking the chain and modifying the history from some point in the past. Forward-secure multi-signature (FS-MS) schemes can overcome this issue by periodically updating signing keys. The only FS-MS construction currently available is Drijvers et al's Pixel, which builds on pairing groups and only achieves forward security at the time period level. In this work, we present new FS-MS constructions that either are free from pairing or capture forward security at the individual message level (i.e., fine-grained forward security). Our first construction Pixel+ works for a maximum number of time periods T. Pixel+ signatures consist of only one group element, and can be verified using two exponentiations. It is the first FS-MS from RSA assumption, and has 3.5x and 22.8x faster signing and verification than Pixel, respectively. Our second FS-MS construction Pixel++ is a pairing-based one. It immediately revokes the signing key's capacity of re-signing the message after creating a signature on this message, rather than at the end of the current time period. Thus, it provides more practical forward security than Pixel. On the other hand, Pixel++ is almost as efficient as Pixel in terms of signing and verification. Both Pixel+ and Pixel++ allow for non-interactive aggregation of signatures from independent signers and are proven to be secure in the random oracle model. In addition, they also support the aggregation of public keys, significantly reducing the storage overhead on PoS blockchains. We demonstrate how to integrate Pixel+ and Pixel++ into PoS blockchains. As a proof-of-concept, we prov

关键词： Blockchain

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Fictitious Play in Markov Games with Single Controller 22

Fictitious Play in Markov Games with Single Controller

引用

23rd ACM Conference on Economics and Computation, EC 2022

作者： Sayin, Muhammed O. Zhang, Kaiqing Ozdaglar, Asuman Electrical and Electronics Engineering Bilkent University Turkey Laboratory for Information and Decision Systems Massachusetts Institute of Technology United States

ISBN: (纸本)9781450391504

Certain but important classes of strategic-form games, including zero-sum and identical-interest games, have thefictitious-play-property (FPP), i.e., beliefs formed in fictitious play dynamics always converge to a Nash equilibrium (NE) in the repeated play of these games. Such convergence results are seen as a (behavioral) justification for the game-theoretical equilibrium analysis. Markov games (MGs), also known as stochastic games, generalize the repeated play of strategic-form games to dynamic multi-state settings with Markovian state transitions. In particular, MGs are standard models for multi-agent reinforcement learning - a reviving research area in learning and games, and their game-theoretical equilibrium analyses have also been conducted extensively. However, whether certain classes of MGs have the FPP or not (i.e., whether there is a behavioral justification for equilibrium analysis or not) remains largely elusive. In this paper, we study a new variant of fictitious play dynamics for MGs and show its convergence to an NE in n-player identical-interest MGs in which a single player controls the state transitions. Such games are of interest in communications, control, and economics applications. Our result together with the recent results in [42] establishes the FPP of two-player zero-sum MGs and n-player identical-interest MGs with a single controller (standing at two different ends of the MG spectrum from fully competitive to fully cooperative). © 2022 Owner/Author.

关键词： Reinforcement learning

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Design of a lightweight and easy-to-wear hand glove with multi-modal tactile perception for digital human

Design of a lightweight and easy-to-wear hand glove with mul...

引用

作者： Pan, Zhigeng Ren, Hongyi Liu, Chang Chen, Ming Mukherjee, Mithun Yang, Wenzhen School of Artificial Intelligence Nanjing University of Information Science and Technology Nanjing China Center for Space-based Computing Systems Zhejiang Laboratory Hangzhou China College of Mechanical Engineering Zhejiang Sci-Tech University Zhejiang Sci-Tech University Hangzhou China Center for Intelligent Manufacturing Computing Zhejiang Laboratory Hangzhou China

Within the field of human–computer interaction, data gloves play an essential role in establishing a connection between virtual and physical environments for the realization of digital human. To enhance the credibility of human-virtual hand interactions, we aim to develop a system incorporating a data glove-embedded technology. Our proposed system collects a wide range of information (temperature, bending, and pressure of fingers) that arise during natural interactions and afterwards reproduce them within the virtual environment. Furthermore, we implement a novel traversal polling technique to facilitate the streamlined aggregation of multi-channel sensors. This mitigates the hardware complexity of the embedded system. The experimental results indicate that the data glove demonstrates a high degree of precision in acquiring real-time hand interaction information, as well as effectively displaying hand posture in real-time using Unity3D. The data glove's lightweight and compact design facilitates its versatile utilization in virtual reality interactions. © 2024 John Wiley & Sons Ltd.

关键词： Virtual reality

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Simulation and analysis of a dual-passband active tunable frequency selective structure 12

Simulation and analysis of a dual-passband active tunable fr...

引用

12th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2024

作者： Qian, Wang Junxia, Tian School of Information Science and Engineering Shandong Weihai264209 China Avic Research Institute for Special Structures of Aeronautical Composite Aviation Key Laboratory of Science and Technology on High Performance Electromagnetic Windows Shandong Jinan250023 China

ISBN: (纸本)9798350351019

In order to meet the technical requirements of radar stealth, a dual-passband active tunable frequency selective structure (TDB FSS) is simulated. The antenna adopts a three-layer CLC composite structure and loads varactor diode branches to achieve two stable passbands, and the two resonance bands are effectively regulated by adjusting the PIN capacitance value. The full-wave electromagnetic simulation software was used to optimize the design and performance simulation of the structure. The simulation results show that the structure achieves two stable passbands near the 4.4 GHz and 12.6 GHz frequency points, and when the varactor diode capacitance changes from 0.1 pF to 1 PF, two adjustable passbands of 1.6 GHz to 4.4 GHz and 10.7 GHz to 12.6 GHz are formed, which realizes the independent regulation of the two passbands. The results show that the design scheme of dual-passband active tunable frequency selective structure proposed in this paper is feasible. © 2024 IEEE.

关键词： Varactors

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Joint Optimization of Transmission and Computation for Multi-source MEC System Based on Deep Reinforcement Learning 20th

Joint Optimization of Transmission and Computation for Mu...

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20th IFIP WG 10.3 International Conference on Network and Parallel Computing, NPC 2024

作者： Zhang, Qi Zhu, Jianhang Gong, Jie School of Computer Science and Engineering Sun Yat-sen University Guangzhou51006 China School of Science and Engineering The Chinese University of Hong Kong Shenzhen Shenzhen518172 China Guangdong Key Laboratory of Information Security and Technology Sun Yat-sen University Guangzhou51006 China

ISBN: (纸本)9789819628636

Due to the limitation of computing resources in end nodes, computation tasks in Internet of Things (IoT) can be offloaded to mobile edge servers. To measure the effectiveness and timeliness of data, Age of information (AoI) is proposed as a timeliness metric. In this paper, we consider the AoI minimization problem for computation-intensive status update. Our former work has designed optimal policy for Peak AoI (PAoI) optimization in single source case. This paper further studies the average AoI optimization in multi-source case, which is challenging. We focus on a multi-source Mobile Edge Computing (MEC) system and study when to generate a new packet. The system operates in two modes: preemptive and non-preemptive computing server. Firstly, we formulate this problem as a Markov Decision Process (MDP). Then, we adopt Deep Reinforcement Learning (DRL) algorithm to optimize average AoI and PAoI respectively, considering both random transmission and computation time. Simulation results demonstrate that preemptive server gets better performance than non-preemptive server. We further extend the PAoI-optimal policy in single source case to the multi-source case, which is shown to be optimal for minimizing average PAoI with the DRL algorithm approaching its performance. When minimizing average AoI, the DRL algorithm achieves better performance than the PAoI-optimal policy. © IFIP International Federation for information Processing 2025.

关键词： Deep reinforcement learning

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Safety Benefits Evaluation of Mixed Traffic Flow with Connected and Automated Vehicles under Snowy Conditions 7

Safety Benefits Evaluation of Mixed Traffic Flow with Connec...

引用

7th IEEE International Conference on Transportation information and Safety, ICTIS 2023

作者： Lu, Zhaoyou Ding, Naikan Gao, Jin Fu, Chuanyun Zhang, Hui Key Laboratory of Operation Safety Technology on Transport Vehicles Ministry of Transport Beijing China School of Transportation Science and Engineering Harbin Institute of Technology Beijing China Intelligent Transportation Systems Research Center Wuhan University of Technology Wuhan China Engineering Research Center of Transportation Information and Safety Ministry of Education Wuhan China

ISBN: (纸本)9798350308532

Connected and automated vehicles are widely agreed to bring tremendous benefits to the traffic system. But the understanding of them is still challenging due to the complexity of the mixed traffic flow of human-driven (HDVs), automated vehicles (AVs), and connected and automated vehicles (CAVs), and due to our limited knowledge of the impacts of adverse weather conditions. Given this, this study was driven to test the safety performance of the above mixed traffic flow both in sunny and snowy conditions under various market penetration rates (MPRs) using SUMO. Minimum gap, the acceleration/deceleration ability of vehicles, and the drivers' desired (minimum) time headway were specifically calibrated for car-following behaviors by a Kolmogorov-Smirnov test based on data collected at an intersection in China. Three surrogate safety measures, i.e., time to collision (TTC), Time-Exposed TTC (TET), and brake rate (BR), were utilized to evaluate the real-time crash risk variations. The results show that 1) the safety performance improved in sunny and snowy conditions when the traffic flow was mixed with AVs and CAVs;2) the improvement of AVs and CAVs in avoiding serious conflicts was more significant in the snowy condition, and 3) the performance of the braking rate was different when MPRs increased in the sunny and snowy conditions. In addition, the difference in safety benefits between AVs and CAVs in sunny and snowy conditions was analyzed. The findings of this study provide valuable insights for managing connected and automated traffic under the snowy condition on urban roads. © 2023 IEEE.

关键词： Risk assessment

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Analysis and Simulation of Interference Effects on CSK Modulation systems 15

Analysis and Simulation of Interference Effects on CSK Modul...

引用

15th International Congress on Image and Signal Processing, BioMedical engineering and Informatics, CISP-BMEI 2022

作者： Guan, Lele Xu, Zhan Tian, Lu Shi, Chenrui School of Information and Communication Engineering Beijing Information Science and Technology University Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing China

ISBN: (数字)9781665488877

ISBN: (纸本)9781665488877

As the space environment of information transmission becomes more and more complex, the accuracy of communication becomes a new challenge. In order to study the anti-jamming performance of code shift keying (CSK), this paper mainly simulates the performance of CSK and binary phase shift keying (BPSK) under 5 signal interferences, and discusses it according to the bit error rates (BER) obtained by simulation. In the face of different forms of signal interference, CSK has better anti-jamming performance than BPSK. Under various forms of signal interference, CSK has the strongest anti-interference ability to multi-tone interference, and its anti-interference ability to pulse interference, 50% narrowband interference, single-tone interference and channel noise decreases successively. © 2022 IEEE.

关键词： Binary phase shift keying

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Modeling of atmospheric radiative transfer with polarization effects using scattering phase matrix 29

Modeling of atmospheric radiative transfer with polarization...

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Remote Sensing of Clouds and the Atmosphere XXIX 2024

作者： Zou, Mengfan Li, Jianhua Xu, Xiaojian He, Xiaoyu School of Electronic and Information Engineering Beihang University 37 Xueyuan Road Beijing100191 China National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematics Beijing100076 China

ISBN: (纸本)9781510680944

Solar radiation will be scattered by atmospheric molecules and aerosol particles when it transfers through the Earth atmosphere. The scattered radiance with different polarization state can be used to characterize atmospheric components. Based on the BHU-ATM presented in our previous work, an atmospheric radiative transfer model considering the polarization effects is developed in this paper, in which the parameter discretization method is used. To this end, the radiative transfer equation is adapted into the Stokes vector form, while the impacts of atmospheric molecules and aerosols on the polarization state of the scattered radiance are represented by means of the scattering phase matrix. The Curtis-Godson approximation and the two-stream approximation are used to obtain the analytical solution of the adapted radiative transfer equation. As the precise calculation of the scattering phase matrix varying with the scattering angle and the radiant wavelength is inefficient for the calculation of spectral path radiance, a novel aspect of this work is the efficient computation of the scattering phase matrix through a two-dimensional interpolation method, significantly reducing computational complexity while maintaining accuracy across a broad range of angles and wavelengths. The simulation results of the atmospheric transmittance, the spectral radiance and the degree of polarization (DOP) for an arbitrarily selected transfer path are given. As it can be seen, in the spectrum from the visible through the near infrared (VNIR), the polarization modeling showed a maximum transmittance difference of 0.0007 and a spectral radiance difference of 0.3 W/m2/μm/sr. The DOP varied significantly, with a difference of up to 0.12 between urban and ocean aerosols. The developed polarization model can improve aerosol component identification in satellite-based remote sensing applications, aiding in more accurate air quality monitoring and enhancing climate models that account for aeroso

关键词： Light scattering

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An Efficient and Lightweight Commitment Scheme for IoT Data Streams 19

An Efficient and Lightweight Commitment Scheme for IoT Data ...

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19th Annual International Conference on Distributed Computing in Smart systems and the Internet of Things, DCOSS-IoT 2023

作者： Katsika, Angeliki Papageorgiou, Konstantinos Fakis, Alexandros Plagianakos, Vassilis Spathoulas, Georgios University of Thessaly Department of Computer Science and Biomedical Informatics Lamia Greece University of the Aegean Department of Information and Communication Systems Engineering Samos Greece Department of Information Security and Communication Technology Gjøvik Norway

ISBN: (纸本)9798350346497

Data integrity is a crucial property for offering Internet of Things (IoT) services. Usually, this is achieved by assuming a high level of trust in the service provider, a practice that induces negative implications. In the present paper, an efficient and lightweight commitment scheme for IoT data streams is presented. The proposed scheme combines KZG polynomial commitments and a blockchain smart contract to enable full data integrity while requiring trust only at the IoT device level. Given that the IoT device operates properly, no tampering can happen at any other point of the IoT workflow, without being noticed, while the protocol offers the option for automated settlement of cases where the operator tampers with users' data. A number of experiments have been conducted to assess the computation/gas fees requirements of the scheme and validate its real-world applicability. © 2023 IEEE.

关键词： Internet of things

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