检索结果-内蒙古大学图书馆

Chosen Ciphertext Secure Identity-Based Broadcast Encryption in the Standard Model

Journal of Shanghai Jiaotong university(Science) 2011年第6期16卷 672-676页

作者：孙瑾胡予濮张乐友 Key Laboratory of Computer Network and Information Security Xidian University Department of Application Mathematics Xi'an University of Technology

To give concurrent consideration both the efficiency and the security(intensity of intractable problem) in the standard model,a chosen ciphertext secure identity-based broadcast encryption is *** the chosen ciphertext security model,by using identity(ID) sequence and adding additional information in ciphertext,the self-adaptive chosen identity security(the full security) and the chosen ciphertext security are gained *** reduction of scheme's security is the decisional bilinear Diffie-Hellman(BDH) intractable assumption,and the proof of security shows that the proposed scheme is indistinguishable against adaptive chosen ciphertext attacks in the standard model under the decisional BDH intractable *** the security level is improved,and it is suitable for higher security environment.

关键词： the standard model provably secure broadcast encryption the chosen ciphertext security the self-adaptive chosen identity security

来源：评论

学校读者我要写书评

暂无评论

BCE-PPDS: Blockchain-based cloud–edge collaborative privacy-preserving data sharing scheme for IoT

引用

Future Generation computer Systems 2026年 174卷

作者： Guijuan Wang Qi Liu Zhongyuan Yu Hongliang Zhang Anming Dong Key Laboratory of Computing Power Network and Information Security Ministry of Education Shandong Computer Science Center Qilu University of Technology (Shandong Academy of Sciences) Jinan Shandong 250353 China Shandong Provincial Key Laboratory of Industrial Network and Information System Security Shandong Fundamental Research Center for Computer Science Jinan Shandong 250353 China China University of Petroleum Qingdao Shandong 266000 China

Internet of Things (IoT) devices generate large amounts of data every day that can be combined with intelligent platforms for predictive analytics and scientific research. However, concerns about privacy and security hinder the willingness of individuals to share data. Blockchain emerged as a promising infrastructure for facilitating secure data sharing due to its decentralized, immutability, and auditable benefits. In this paper, we propose a blockchain-based cloud–edge collaborative privacy protection data sharing scheme (BCE-PPDS), which is decentralized and enables data requesters (DRs) to search data resources using smart contracts to efficiently obtain target data. To protect the identity privacy of data owners (DOs), we propose a novel certificateless linkable ring signature algorithm with efficient performance. This algorithm is not only suitable for deployment on resource-limited IoT devices, so that DOs can realize anonymous identity authentication, but also can aggregate the generated ring signatures for batch verification, so as to improve the efficiency of signature verification. In addition, we designed a key distribution algorithm using the Asmuth–Bloom secret sharing scheme to ensure the security of the key. Under the random oracle model, BCE-PPDS is provably secure. The experimental results verify that BCE-PPDS is efficient and practical.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Revolutionizing Symbiotic Radio: Exploiting Tradeoffs in Hybrid Active-Passive Communications

arXiv

引用

arXiv 2025年

作者： Xu, Rui Ye, Yinghui Sun, Haijian Shi, Liqin Lu, Guangyue Shaanxi Key Laboratory of Information Communication Network and Security Xi’an University of Posts & Telecommunications China School of Electrical and Computer Engineering The University of Georgia AthensGA United States

Symbiotic radio (SR), a novel energy- and spectrum-sharing paradigm of backscatter communications (BC), has been deemed a promising solution for ambient Internet of Things (A-IoT), enabling ultra-low power consumption and massive connectivity. However, A-IoT nodes utilizing BC suffer from low transmission rates, which may limit the applications of SR in A-IoT scenarios with data transmission requirements. To address this issue, in this article, we introduce hybrid active-passive communications (HAPC) into SR by exploiting tradeoffs between transmission rate and power consumption. We first present an overview of novel BC paradigms including ambient BC and SR. Then, a novel HAPC-enabled SR is proposed to enhance the transmission rate of A-IoT nodes. Furthermore, within this paradigm, we investigate the resource allocation scheme and present preliminary research results. Simulation results show that the transmission rate of A-IoT nodes in the proposed HAPC-enabled SR surpasses that in traditional SR. Finally, we discuss open issues related to HAPC-enabled SR. Copyright © 2025, The Authors. All rights reserved.

关键词： Energy utilization

来源：评论

学校读者我要写书评

暂无评论

Development of yellow-light TiO2 integrated photonics

引用

Optics Letters 2025年第11期50卷 3489-3492页

作者： Zequn Chen Yiheng Tang Maoliang Wei Xiaojing Li Boshu Sun Yingchun Wu Sishuo Zou Ji Huang Ke Si Wei Gong Hongtao Lin Lan Li Institute of Advanced Technology Westlake Institute for Advanced Study Hangzhou 310024 China Zhejiang Key Laboratory of 3D Micro/Nano Fabrication and Characterization School of Engineering Westlake University Hangzhou 310030 China The State Key Lab of Brain-Machine Intelligence College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China MOE Frontier Science Center for Brain Science & Brain-Machine Integration Zhejiang University Hangzhou 310027 China Nanhu Brain-Computer Interface Institute Hangzhou 311100 China College of Optical Science and Engineering Zhejiang University Hangzhou 310027 China Westlake Institute for Optoelectronics Fuyang Hangzhou Zhejiang 311421 China

Visible-light photonic integrated circuits (PICs) are rapidly emerging as a crucial technology to overcome the scaling challenges in quantum information processing and biosensing. Titanium dioxide (TiO 2 ), with its high transparency in the visible range, is regarded as a promising material for facilitating the development of high-performance visible-light integrated systems. In this paper, we introduce a series of passive TiO 2 integrated devices, which include waveguides, multimode interferometers (MMIs), and thermo-optic switches (TOSs), monolithically integrated for the first time to our knowledge at a working wavelength of 589 nm. A propagation loss of 5.46 ± 0.17 dB/cm demonstrates a significant improvement over previous reports on yellow-light TiO 2 waveguides. This study marks the first fabrication of a TOS operating at 589 nm, featuring a TiO 2 core and polymer cladding. Notably, it achieves a power consumption (P π ) of 8.24 mW, which represents a threefold reduction compared to silicon nitride-based TOSs operating in the visible spectrum. These results offer new insight into the design and fabrication of visible waveguide-integrated devices, paving the way for future emerging applications, such as quantum information, sensors, and biomedical science.

关键词： Biosensors Effective refractive index information processing Photonics Quantum information Titanium dioxide

来源：评论

学校读者我要写书评

暂无评论

Cooperative Agent-based QoS Framework for heterogeneous networks

Cooperative Agent-based QoS Framework for heterogeneous netw...

引用

2011 International Conference on information Technology, computer Engineering and Management Sciences, ICM 2011

作者： Ding, Feng Zhang, Shuai Wang, Heng Huang, Songhua Tao, Jun Key Laboratory of Science and Technology on Information Systems Engineering Nanjing Research Institute of Electronics Engineering Nanjing China Key Laboratory of Computer Network and Information Integration of Ministry of Education Southeast University Nanjing China

ISBN: (纸本)9780769545226

With the fast development of network technology and expansion of the network scale, the heterogeneity of Internet makes the Quality of Service (QoS) guarantee techniques even more challenging. In this paper the state-of-the-art of QoS guarantee techniques is first reviewed, and a new Cooperative Agent-based QoS Framework (CAQF) for heterogeneous networks is proposed, which integrates the technologies of QoS-adaptive cooperation, situation awareness, admission control, routing, packet scheduling and resource management. It can be used for intra-domain, inter-domain's QoS guarantee in the heterogeneous networks. Procedure simulation results show that CAQF can achieve expected functionality, while demonstrating the feasibility and universality of the framework for distributed end-to-end QoS cooperation. © 2011 IEEE.

关键词： Quality of service

来源：评论

学校读者我要写书评

暂无评论

Density-aware and Depth-aware Visual Representation for Zero-Shot Object Counting

Density-aware and Depth-aware Visual Representation for Zero...

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Fang Nan Feng Tian Ni Zhang Nian Liu Haonan Miao Guang Dai Mengmeng Wang Faculty of Electronic and Information Engineering Xi’an Jiaotong University Xi’an China Ministry of Education Key Laboratory of Intelligent Networks and Network Security Xi’an Jiaotong University Xi’an China School of Automation Northwestern Polytechnical University Xi’an China Computer Vision Department Mohamed bin Zayed University of Artificial Intelligence Abu Dhabi UAE SGIT AI Lab State Grid Corporation of China Zhejiang University of Technology Hang Zhou China

ISBN: (数字)9798350368741

ISBN: (纸本)9798350368758

Previous methods often utilize CLIP semantic classifiers with class names for zero-shot object counting. However, they ignore crucial density and depth knowledge for counting tasks. Thus, we propose a density-aware and depth-aware prompt counting model, which captures density information via learning density-aware prompts based on density-aware contrastive loss and incorporates depth guidance with predefined depth-aware prompts. To facilitate the training process, we design two strategies for standard counting loss and the contrastive loss, where the former prioritizes larger and sparser objects initially, gradually focusing on smaller and denser objects, and the latter adopts coarse-to-fine density learning. Besides, we construct a dataset named LVIS-372 with more real-world scenarios and balanced instance distribution compared to existing ones. Finally, the experimental results demonstrate the effectiveness of our proposed method.

关键词： Training Visualization Semantics Focusing Signal processing Acoustics Power capacitors Speech processing Standards

来源：评论

学校读者我要写书评

暂无评论

Pre-Chirp-Domain Index Modulation for Full-Diversity Affine Frequency Division Multiplexing towards 6G

引用

IEEE Transactions on Wireless Communications 2025年

作者： Liu, Guangyao Mao, Tianqi Xiao, Zhenyu Wen, Miaowen Liu, Ruiqi Zhao, Jingjing Basar, Ertugrul Wang, Zhaocheng Chen, Sheng Beihang University School of Electronic and Information Engineering State Key Laboratory of CNS/ATM Beijing100191 China Greater Bay Area Innovation Research Institute of BIT Zhuhai519000 China Zhuhai519088 China South China University of Technology School of Electronic and Information Engineering Guangzhou510640 China ZTE Corporation Wireless and Computing Research Institute Beijing100029 China State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen518055 China Tampere University Department of Electrical Engineering Tampere33720 Finland Koc University Department of Electrical and Electronics Engineering Sariyer Istanbul34450 Turkey Tsinghua University Department of Electronic Engineering Beijing100084 China University of Southampton School of Electronics and Computer Science SouthamptonSO17 1BJ United Kingdom

As a superior multicarrier technique utilizing chirp signals for high-mobility communications, affine frequency division multiplexing (AFDM) is envisioned to be a promising candidate for sixth-generation (6G) wireless networks. AFDM is based on the discrete affine Fourier transform (DAFT) with two adjustable parameters of the chirp signals, termed the pre-chirp and post-chirp parameters, respectively. Whilst the post-chirp parameter complies with stringent constraints to combat the time-frequency doubly selective channel fading, we show that the pre-chirp counterpart can be flexibly manipulated for an additional degree of freedom. Therefore, this paper proposes a novel AFDM scheme with the pre-chirp index modulation (PIM) philosophy (AFDM-PIM), which can implicitly convey extra information bits through dynamic pre-chirp parameter assignment, thus enhancing both spectral and energy efficiency. Specifically, we first demonstrate that the subcarrier orthogonality is still maintained by applying distinct pre-chirp parameters to various subcarriers in the AFDM modulation process. Inspired by this property, we allow each AFDM subcarrier to carry a unique pre-chirp signal according to the incoming bits. By such an arrangement, extra bits can be embedded into the index patterns of pre-chirp parameter assignment without additional energy consumption. We derive asymptotically tight upper bounds on the average bit error probability (BEP) of the proposed schemes with the maximum-likelihood detection, and validate that the proposed AFDM-PIM can achieve full diversity under doubly dispersive channels. Based on the derived result, we further propose an optimal pre-chirp alphabet design to enhance the bit error rate (BER) performance via intelligent optimization algorithms. Simulation results demonstrate that the proposed AFDM-PIM outperforms the classical benchmarks. © 2002-2012 IEEE.

关键词： Chirp modulation

来源：评论

学校读者我要写书评

暂无评论

An adaptive offloading framework for Android applications in mobile edge computing

引用

Science China(information Sciences) 2019年第8期62卷 114-130页

作者： Xing CHEN Shihong CHEN Yun MA Bichun LIU Ying ZHANG Gang HUANG College of Mathematics and Computer Science Fuzhou University Fujian Key Laboratory of Network Computing and Intelligent Information Processing Fuzhou University School of Software Tsinghua University Key Laboratory of High Confidence Software Technologies Ministry of Education

Mobile edge computing(MEC) provides a fresh opportunity to significantly reduce the latency and battery energy consumption of mobile applications. It does so by enabling the offloading of parts of the applications on mobile edges, which are located in close proximity to the mobile devices. Owing to the geographical distribution of mobile edges and the mobility of mobile devices, the runtime environment of MEC is highly complex and dynamic. As a result, it is challenging for application developers to support computation offloading in MEC compared with the traditional approach in mobile cloud computing, where applications use only the cloud for offloading. On the one hand, developers have to make the offloading adaptive to the changing environment, where the offloading should dynamically occur among available computation *** the other hand, developers have to effectively determine the offloading scheme each time the environment changes. To address these challenges, this paper proposes an adaptive framework that supports mobile applications with offloading capabilities in MEC. First, based on our previous study(DPartner), a new design pattern is proposed to enable an application to be dynamically offloaded among mobile devices, mobile edges,and the cloud. Second, an estimation model is designed to automatically determine the offloading *** this model, different parts of the application may be executed on different computation nodes. Finally, an adaptive offloading framework is implemented to support the design pattern and the estimation model. We evaluate our framework on two real-world applications. The results demonstrate that our approach can aid in reducing the response time by 8%–50% and energy consumption by 9%–51% for computation-intensive applications.

关键词： computation offloading software adaptation mobile edge computing application refactoring Android

来源：评论

学校读者我要写书评

暂无评论

A static technique for detecting input validation vulnerabilities in Android apps

引用

Science China(information Sciences) 2017年第5期60卷 210-225页

作者： Zhejun FANG Qixu LIU Yuqing ZHANG Kai WANG Zhiqiang WANG Qianru WU National Computer Network Intrusion Protection Center University of Chinese Academy of Sciences National Computer Network Emergency Response Technical Team/Coordination Center of China State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of Sciences Beijing Electronic Science and Technology Institute

Input validation vulnerabilities are common in Android apps, especially in inter-component communications. Malicious attacks can exploit this kind of vulnerability to bypass Android security mechanism and compromise the integrity, confidentiality and availability of Android devices. However, so far there is not a sound approach at the source code level for app developers aiming to detect input validation vulnerabilities in Android apps. In this paper, we propose a novel approach for detecting input validation flaws in Android apps and we implement a prototype named Easy IVD, which provides practical static analysis of Java source *** IVD leverages backward program slicing to extract transaction and constraint slices from Java source *** Easy IVD validates these slices with predefined security rules to detect vulnerabilities in a known *** detect vulnerabilities in an unknown pattern, Easy IVD extracts implicit security specifications as frequent patterns from the duplicated slices and verifies them. Then Easy IVD semi-automatically confirms the suspicious rule violations and reports the confirmed ones as vulnerabilities. We evaluate Easy IVD on four versions of original Android apps spanning from version 2.2 to 5.0. It detects 58 vulnerabilities including confused deputy attacks and denial of service attacks. Our results prove that Easy IVD can provide a practical defensive solution for app developers.

关键词： input validation static analysis program slicing vulnerability detection Android security

来源：评论

学校读者我要写书评

暂无评论

A new quantum key distribution resource allocation and routing optimization scheme

引用

Chinese Physics B 2024年第3期33卷 244-259页

作者：毕琳袁晓同吴炜杰林升熙 School of Computer Science and Technology Changchun University of Science and TechnologyChangchun 130012China Key Laboratory of Network and Information Security in Jilin Province Changchun 130012China

Quantum key distribution(QKD)is a technology that can resist the threat of quantum computers to existing conventional cryptographic ***,due to the stringent requirements of the quantum key generation environment,the generated quantum keys are considered valuable,and the slow key generation rate conflicts with the high-speed data transmission in traditional optical *** this paper,for the QKD network with a trusted relay,which is mainly based on point-to-point quantum keys and has complex changes in network resources,we aim to allocate resources reasonably for data packet ***,we formulate a linear programming constraint model for the key resource allocation(KRA)problem based on the time-slot ***,we propose a new scheduling scheme based on the graded key security requirements(GKSR)and a new micro-log key storage algorithm for effective storage and management of key ***,we propose a key resource consumption(KRC)routing optimization algorithm to properly allocate time slots,routes,and key *** results show that the proposed scheme significantly improves the key distribution success rate and key resource utilization rate,among others.

关键词： quantum key distribution(QKD) resource allocation key storage routing algorithm

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：