检索结果-南通市图书馆

Privacy Distributed Constrained Optimization Over Time-Varying Unbalanced Networks and Its Application in Federated Learning

引用

IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 335-346页

作者： Mengli Wei Wenwu Yu Duxin Chen Mingyu Kang Guang Cheng the School of Cyber Science and Engineering Southeast University IEEE the School of Mathematics Frontiers Science Center for Mobile Information Communication and Security Southeast University the Purple Mountain Laboratories the School of Mathematics Southeast University

This paper investigates a class of constrained distributed zeroth-order optimization(ZOO) problems over timevarying unbalanced graphs while ensuring privacy preservation among individual agents. Not taking into account recent progress and addressing these concerns separately, there remains a lack of solutions offering theoretical guarantees for both privacy protection and constrained ZOO over time-varying unbalanced *** hereby propose a novel algorithm, termed the differential privacy(DP) distributed push-sum based zeroth-order constrained optimization algorithm(DP-ZOCOA). Operating over time-varying unbalanced graphs, DP-ZOCOA obviates the need for supplemental suboptimization problem computations, thereby reducing overhead in comparison to distributed primary-dual methods. DP-ZOCOA is specifically tailored to tackle constrained ZOO problems over time-varying unbalanced graphs,offering a guarantee of convergence to the optimal solution while robustly preserving privacy. Moreover, we provide rigorous proofs of convergence and privacy for DP-ZOCOA, underscoring its efficacy in attaining optimal convergence without constraints. To enhance its applicability, we incorporate DP-ZOCOA into the federated learning framework and formulate a decentralized zeroth-order constrained federated learning algorithm(ZOCOA-FL) to address challenges stemming from the timevarying imbalance of communication topology. Finally, the performance and effectiveness of the proposed algorithms are thoroughly evaluated through simulations on distributed least squares(DLS) and decentralized federated learning(DFL) tasks.

关键词： Constrained distributed optimization decentralized federated learning (DFL) differential privacy (DP) time-varying unbalanced graphs zeroth-order gradient

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Software-defined process-near-memory architecture using 3D hybrid bonding integration

引用

Science China(Information Sciences) 2025年第1期68卷 366-378页

作者： Anlin XU Chenchen DENG Jianfeng ZHU Yao WANG Shaojun WEI Leibo LIU School of Integrated Circuits Tsinghua University Beijing Institution of Tracking and communication Technology Beijing National research center for Information Science and Technology Tsinghua University

With the unprecedented explosive growing amount of global data, the development of computing chips, which encounter bottlenecks such as power wall and memory wall, cannot satisfy the demanding requirement. This work proposes a software-defined process-near-memory(SDPNM) computing architecture implemented using 3D hybrid bonding *** software-defined chip architecture, featuring spatial computations and dynamic reconfiguration, innovates in a top-down manner to achieve high energy efficiency while maintaining flexibility after fabrication. The process-near-memory integration further advances the SDNPM chip in a bottom-up way to reduce the energy consumption of data movement while improving the bandwidth. Utilizing a relatively mature fabrication and bonding process can result in feasible solutions for both data-intensive and compute-intensive applications including digital signal processing and artificial intelligence. The logic die is fabricated in the SMIC 40 nm process and the DRAM die is fabricated in the PSMC 25 nm process. The hybrid bonding is implemented by XMC. The experimental results show that the energy efficiency of the proposed SDPNM chip is 33.1× better than the state-of-the-art FPGA ranging from 8.2× to 104.1×.

关键词： software-defined chips process near memory energy efficiency dynamic reconfiguration domain specific

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improved Known-Key Distinguisher on Round-Reduced 3D Block Cipher

引用

Chinese Journal of Electronics 2015年第1期24卷 199-204页

作者： ZHA Daren WU Shuang WANG Qiongxiao University of Chinese Academy of Sciences data assurance and communication security research center of Chinese Academy of Sciences

The 3D block cipher is a three-dimensional version of AES(Advanced encryption standard), which use a three-dimensional state and similar round functions. In this paper, we will use the known-key attack model proposed by Knudsen and Rijmen, and propose an improved distinguisher on 15 rounds of 3D, which has 22 rounds in total. The distinguisher is constructed using rebound techniques. In the previous distinguisher, only three inbound phases are merged. Here we propose a method to merge four inbound phases using gradual matching *** improved complexity of this distinguisher is 2128 computations and 264 memory. The computational complexity is significantly reduced from 2200 in the previous attack.

关键词： 3D block cipher Known-key distinguisher Rebound attack Gradual matching.

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

A Cross-Multi-Domain Trust Assessment Authority Delegation Method Based on Automotive Industry Chain

引用

Computers, Materials & Continua 2025年第1期82卷 407-426页

作者： Binyong Li Liangming Deng Jie Zhang Xianhui Deng School of Cybersecurity(Xin Gu Industrial College) Chengdu University of Information TechnologyChengdu610225China Advanced Cryptography and System security Key Laboratory of Sichuan Province Chengdu610225China SUGON Industrial Control and security center Chengdu610225China

To solve the challenges of connecting and coordinating multiple platforms in the automotive industry and to enhance collaboration among different participants,this research focuses on addressing the complex supply relationships in the automotive market,improving data sharing and interactions across various platforms,and achieving more detailed integration of data and *** propose a trust evaluation permission delegation method based on the automotive industry *** proposed method combines smart contracts with trust evaluation mechanisms,dynamically calculating the trust value of users based on the historical behavior of the delegated entity,network environment,and other factors to avoid malicious node attacks during the permission delegation *** also introduce strict control over the cross-domain permission granting and revocation mechanisms to manage the delegation path,prevent information leakage caused by malicious node interception,and effectively protect data integrity and *** analysis shows that this method meets the realtime requirements of collaborative interaction in the automotive industry chain and provides a feasible solution to permission delegation issues in the automotive industry chain,offering dynamic flexibility in authorization and scalability compared to most existing solutions.

关键词： Automotive industry chain cross-domain access block chain delegate authority trust assessment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

DDoS Attack Tracking Using Multi-Round Iterative Viterbi Algorithm in Satellite Internet

引用

China communications 2025年第03期 148-163页

作者： Guo Wei Xu Jin Pei Yukui Yin Liuguo Feng Wei Department of Electronic Engineering Tsinghua University China Telecom Cybersecurity Technology Co. Ltd Operation center of Network security Products China Telecom Co. Ltd. Beijing National research center for Information Science and Technology research Institute of Tsinghua Pearl River Delta

Satellite Internet(SI) provides broadband access as a critical information infrastructure in ***, with the integration of the terrestrial Internet, the influx of massive terrestrial traffic will bring significant threats to SI, among which DDoS attack will intensify the erosion of limited bandwidth resources. Therefore, this paper proposes a DDoS attack tracking scheme using a multi-round iterative Viterbi algorithm to achieve high-accuracy attack path reconstruction and fast internal source locking, protecting SI from the source. Firstly, to reduce communication overhead, the logarithmic representation of the traffic volume is added to the digests after modeling SI, generating the lightweight deviation degree to construct the observation probability matrix for the Viterbi algorithm. Secondly, the path node matrix is expanded to multi-index matrices in the Viterbi algorithm to store index information for all probability values, deriving the path with non-repeatability and maximum probability. Finally, multiple rounds of iterative Viterbi tracking are performed locally to track DDoS attack based on trimming tracking results. Simulation and experimental results show that the scheme can achieve 96.8% tracking accuracy of external and internal DDo S attack at 2.5 seconds, with the communication overhead at 268KB/s, effectively protecting the limited bandwidth resources of SI.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Qubit-wise teleportation and its application in public-key secret communication

引用

Science China(Information Sciences) 2017年第3期60卷 183-194页

作者： Chenmiao WU Li YANG State Key Laboratory of Information security Institute of Information EngineeringChinese Academy of Sciences data assurance and communication security research center Chinese Academy of Sciences University of Chinese Academy of Sciences

We propose a quantum public-key encryption(QPKE) protocol for an unknown multi-qubit state based on qubit-wise teleportation. The private-key is a computational Boolean function, whereas the public-key is a pair of a random bit string and a quantum state. A private-key corresponds to an exponential number of public-keys. security analysis showed that the proposed protocol has information-theoretic security from attacks for the private-key and the encryption. A multi-partite quantum secret state sharing protocol is presented based on the proposed multi-qubit-oriented QPKE protocol. Such secret state sharing protocol is informationtheoretically secure.

关键词： public-key encryption quantum information quantum teleportation quantum cryptography quantum secret sharing

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Montgomery Algorithm over a Prime Field

引用

Chinese Journal of Electronics 2019年第1期28卷 39-44页

作者： YU Wei WANG Kunpeng LI Bao TIAN Song State Key Laboratory of Information security the Institute of Information EngineeringChinese Academy of Sciences data assurance and communication security research center Chinese Academy of Sciences University of Chinese Academy of Sciences

New formulae for point addition and point doubling on elliptic curves over prime fields are *** on these formulae, an improved Montgomery algorithm is proposed. The theoretical analysis indicates that it is about 13.4% faster than Brier and Joye’s Montgomery algorithm. Experiments on the elliptic curve over a 256-bit prime field recommended by the National Institute of Standards and Technology and over a 256-bit prime field in Chinese elliptic curve standard SM2 support the theoretical analysis.

关键词： Elliptic curve Montgomery algorithm Scalar multiplication

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Analysis of bitcoin backbone protocol in the non-flat model

引用

Science China(Information Sciences) 2020年第3期63卷 64-79页

作者： Peifang NI Hongda LI Dongxue PAN State Key Laboratory of Information security Institute of Information EngineeringChinese Academy of Sciences School of Cyber security University of Chinese Academy of Sciences data assurance and communication security research center Chinese Academy of Sciences

Owing to the novel proof-of-work based consensus algorithm, bitcoin has been the most successful decentralized cryptocurrency so far. In bitcoin system, parties(miners) compete to create blocks by doing publicly verifiable proofs of sequential work(proof-of-work) and the probability that a party wins the competition is proportional to the amount of computational power that he has invested. Note that its security holds under honest majority assumption in terms of the amount of computational power. In this paper, we provide the formal analysis of bitcoin backbone protocol in the non-flat model. Precisely, we rethink and redefine the model of computing puzzles to capture the real-world protocol execution, where each party owns different amount of computational power and does sequential computations towards a puzzle independently. Fortunately, our work obtains the better results in analyzing the security of bitcoin backbone protocol, which can reflect the real-world protocol execution better, without any additional assumptions but the honest majority assumption. Finally, we show that a robust public transaction ledger can be built on top of bitcoin backbone protocol in our model securely.

关键词： bitcoin system proof-of-work computational power non-flat model transaction ledger

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Mutual authenticated quantum no-key encryption scheme over private quantum channel

引用

Science China(Information Sciences) 2018年第2期61卷 216-223页

作者： Li YANG Chenmiao WU Huiqin XIE State Key Laboratory of Information security Institute of Information EngineeringChinese Academy of Sciences data assurance and communication security research center Chinese Academy of Sciences School of Cyber security University of Chinese Academy of Sciences

In this paper, we realize Shamir’s no-key protocol via quantum computation of Boolean functions and a private quantum channel. The proposed quantum no-key protocol has three rounds and provides mutual data origin authentication. Random Boolean functions are used to create entanglement and guarantee that any adversary without keys cannot pass the authentication. Thus, our protocol can resist the manin-the-middle attack. A security analysis has shown that pieces of ciphertexts of the three rounds are completely mixed state. This property ensures no adversary can get any information about the sent message or authentication keys. Therefore, our protocol is unconditionally secure and its authentication keys can be reused.

关键词： quantum cryptography no-key protocol quantum entanglement information-theoretical security private quantum channel

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Improved linear(hull) cryptanalysis of round-reduced versions of SIMON

引用

Science China(Information Sciences) 2017年第3期60卷 223-225页

作者： Danping SHI Lei HU Siwei SUN Ling SONG Kexin QIAO Xiaoshuang MA State Key Laboratory of Information security Institute of Information Engineering Chinese Academy of Sciences data assurance and communication security research center Chinese Academy of Sciences University of Chinese Academy of Sciences

Dear editor,SIMON is a family of lightweight block ciphers proposed by the *** security Agency in2013[1].It employs a Feistel structure,and performs well in hardware and software implementa-

关键词： hull Improved linear

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：