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A fine-grained privacy protection data aggregation scheme for outsourcing smart grid

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Frontiers of Computer Science 2023年第3期17卷 187-198页

作者： Hongyang LI Xinghua LI qingfeng cheng School of Cyber Engineering Xidian UniversityXi’an 710071China Strategic Support Force Information Engineering University Zhengzhou 450001China

Compared with the traditional power grid,smart grid involves many advanced technologies and ***,due to the rapid development of various network technologies,smart grid is facing the challenges of balancing privacy,security,efficiency,and *** the proposed scheme,we design a privacy protection scheme for outsourcing smart grid aided by fog computing,which supports fine-grained privacy-protected data aggregation based on user *** fog server matches the encrypted characteristics in the received message with the encrypted aggregation rules issued by the service ***,the service provider can get more fine-grained analysis data based on user *** from the existing outsourcing smart grid schemes,the proposed scheme can achieve real-time pricing on the premise of protecting user privacy and achieving system fault ***,experiment analyses demonstrate that the proposed scheme has less computation overhead and lower transmission delay than existing schemes.

关键词： smart grid data aggregation fine-grained privacy preservation real-time pricing

LaTLS: A Lattice-Based TLS Proxy Protocol

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Chinese Journal of Electronics 2022年第2期31卷 313-321页

作者： ZHANG Xinglong cheng qingfeng LI Yuting State Key Laboratory of Mathematical Engineering and Advanced Computing

The function of the Internet proxy is to check and convert the data exchanged between client and server. In fact, the two-party secure communication protocol with good security is turned into an unsafe multiparty protocol. At present, there are relatively few proxy protocols that can be applied in practice. This paper analyzes the classic agent protocol mcTLS and pointed out the security issues. We focus on the security of TLS 1.3 and proposed a lattice-based multi-party proxy protocol:La TLS. LaTLS can be proved secure in the eCK model, it can resist key-sharing attacks, counterfeiting attacks, replay attacks, and achieve forward security. Compared with traditional DH and ECDH schemes, LaTLS is more effcient. Its security is based on the shortest vector problem, therefor it has anti-quantum attack properties.

关键词： Proxy TLS 1.3 Lattice eCK model mcTLS LaTLS

An efficient and authenticated key establishment scheme based on fog computing for healthcare system

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Frontiers of Computer Science 2022年第4期16卷 173-184页

作者： Xinghua Li Ting Chen qingfeng cheng Jianfeng Ma School of Cyber Engineering Xidian UniversityXi’an710071China

Because of its closeness to users,fog computing responds faster than cloud ***,it has been deployed to various applications,such as healthcare ***,to ensure the secure communication of the fog-based healthcare system,Jia et *** an authenticated key agreement ***,in view of the high computation cost existing in Jia et al.’s scheme,Ma et *** an efficient one using elliptic curve *** this paper,we observe that both the two schemes may potentially risk ephemeral key compromise attacks and need ***,to overcome this potential risk,we propose a new authenticated scheme based on Jia et al.’s scheme using elliptic curve computational Diffie-Hellman hypothesis and hash ***,we provide provable security under the adopted adversarial model and ProVerif simulation,and also analyze the performance in terms of computation and communication costs by *** analysis results show that the improved scheme resists the common attacks,reduces computation overhead,and has a certain significance.

关键词： authenticated key establishment ephemeral key compromise attack fog-driven healthcare system elliptic curve cryptography provable security ProVerif simulation

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一种车联网中的无证书匿名认证密钥协商协议

信息网络安全 2024年第7期24卷 983-992页

作者：刘一丹马永柳杜宜宾程庆丰信息工程大学网络空间安全学院郑州450001

在车联网中,各节点在开放的无线信道上通信,因此易受到恶意攻击,保障车辆通信过程中消息的完整性和身份的匿名性变得至关重要。针对现有的WZQ协议无法抵抗临时密钥泄露攻击问题,文章提出一种车联网中的无证书匿名认证密钥协商协议iWZQ。... 详细信息

在车联网中,各节点在开放的无线信道上通信,因此易受到恶意攻击,保障车辆通信过程中消息的完整性和身份的匿名性变得至关重要。针对现有的WZQ协议无法抵抗临时密钥泄露攻击问题,文章提出一种车联网中的无证书匿名认证密钥协商协议iWZQ。iWZQ采用无证书签名技术,解决了复杂的密钥存储和密钥托管问题,同时将身份认证与交通消息验证分离,避免了频繁检查消息撤销列表的问题。此外,通过可证明的安全理论和Scyther工具证明了文章所提协议的安全性。将文章所提协议与其他协议进行性能比较,结果表明,iWZQ在提高安全性的同时能够有效降低计算开销和通信开销。

关键词：车联网无证书签名匿名性密钥协商协议

基于常规指标的糖尿病足合并坏死性筋膜炎的风险评估

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中华糖尿病杂志 2024年第5期16卷 512-518页

作者：李寻程超倪夏黄秋红唐紫薇赵文睿杜志鹏程庆丰曾庆莲重庆医科大学附属第一医院内分泌科重庆400016 重庆医科大学附属第一医院重症医学科重庆400016

目的探讨常规指标在糖尿病足(DF)合并坏死性筋膜炎(NF)风险评估模型中的应用价值。方法本研究为横断面研究。回顾性分析2018年10月至2022年4月就诊于重庆医科大学附属第一医院的815例DF患者,根据是否合并NF分为DF组(703例)和DF合并NF组(... 详细信息

目的探讨常规指标在糖尿病足(DF)合并坏死性筋膜炎(NF)风险评估模型中的应用价值。方法本研究为横断面研究。回顾性分析2018年10月至2022年4月就诊于重庆医科大学附属第一医院的815例DF患者,根据是否合并NF分为DF组(703例)和DF合并NF组(DNF组,112例),分析两组患者的临床资料(年龄、体重指数、病程、糖尿病并发症、足部皮肤坏死、体温、血常规、肌酐、纤维蛋白原、白蛋白、糖化血红蛋白、超敏C反应蛋白等),将具有统计学意义及临床意义的指标转换为分类变量,以DNF为因变量进行多因素logistic回归建立新的DNF风险评估(NRADNF)模型并绘制列线图,采用受试者工作特征(ROC)曲线下面积(AUC)评估模型区分度,Hosmer-Lemeshow拟合优度检验评估模型准确度,决策曲线分析评估模型有效性,Bootstrap重复抽样评估模型稳定性。结果构建的NRANDF模型包含6个指标:年龄≥60岁(OR=0.378,P20 mg/L(OR=2.455,P=0.006)、血红蛋白≤100 g/L(OR=1.833,P=0.026)。该模型AUC(95%CI)为0.815(0.773,0.857),Hosmer-Lemeshow拟合优度良好(χ^(2)=8.736,P=0.272);临床决策曲线分析显示,该模型具有临床净获益,且采用Bootstrap进行内部验证显示重复抽样前后ROC曲线基本重合。结论构建的NRADNF模型具有良好的预测效能和临床获益,且所纳入的指标易于获得,可在临床中运用进行DNF的初步筛查。

关键词：糖尿病足坏死性筋膜炎风险评估筛查

An enhanced key exchange protocol exhibiting key compromise impersonation attacks resistance in mobile commerce environment

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Science China(Information Sciences) 2021年第9期64卷 249-251页

作者： Ting CHEN Xinghua LI qingfeng cheng School of Cyber Engineering Xidian University State Key Laboratory of Mathematical Engineering and Advanced Computing

Dear editor,Numerous three-party authenticated key exchange(3 PAKE)protocols have been presented, which allow the establishment of a secure session by utilizing a session key shared between two clients with the assistance of a server trusted by both the clients via an unprotected network communication environment. The 3 PAKE protocols can be applied to various scenarios, including mobile commerce environment.

关键词： three-party authentication key exchange key compromise impersonation attack mobile-commerce environments security analysis

Improvement on a batch authenticated key agreement scheme

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Frontiers of Computer Science 2022年第2期16卷 186-188页

作者： qingfeng cheng Ting CHEN Siqi MA Xinghua LI School of Cyber Engineering Xidian UniversityXi'an 710071China Strategic Support Force Information Engineering University Zhengzhou 450001China The University of Queensland Brisbane 4072Australia

The rapid advancement in 5G networks calls for more key technologies to *** promote its wide deployment and application,ultra-dense network(UDN)plays a significant part by providing high data rate and realizing seamless coverage and low *** have proposed many related works on 5G UDN,such as the literatures[1,2].However,UDN still faces some security *** instance,it needs to guarantee the reliable and continuous connection and provide communication security.

关键词： network batch scheme

A secure spectrum auction scheme without the trusted party based on the smart contract

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Digital Communications and Networks 2021年第2期7卷 223-234页

作者： Jiaqi Wang Ning Lu qingfeng cheng Lu Zhou Wenbo Shi School of Computer Science and Engineerings Northeastern University Shenyang 110004China School of Computer Science and Technology Xidian UniversityXi'anChina Strategic Support Force Information Engineering University Zhengzhou450001China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001China Division of Computer Science University ofAizuAizu-WakamatsuJapan School of Computer and Communication Engineering Nordieastem UniversityQinhuangdao066004China

With the development of communication 5G networks and technologies,spectrum resources are increasingly *** scarcity of the spectrum resource makes market-driven spectrum auction become an important means of spectrum allocation,and due to the complexity of the network environment,the security of spectrum auctions can not be *** existing secure spectrum auction schemes introduce a semi-honest agent to complete spectrum ***,the hypothetical semi-honest model does not guarantee the security of spectnim auction in the actual application scenario,which may lead to potential security threats:the agent may reveal the privacy of bidders,agent or auctioneer may collude with the bidder to manipulate the spectrum auction,and so *** this paper,a secure spectrum auction scheme without a trusted party is proposed based on the smart contract technology,and the smart contract written into the blockchain replaces the traditional semi-honest agent to cooperate with the auctioneer server to complete the *** order to ensure the security of our scheme,a secure spectrum auction protocol is designed,in which the Software Guard Extensions(SGX)technology and Paillier cryptosystem are used to protect the privacy of *** verification is provided in our protocol by using extensive Pedersen commitment,which prevents the auctioneer server and the bidder from colluding with each other and verifies group bid sum ***,the security analysis is given to propose several types of attacks that can be ***,theoretical analysis and simulation experiments of our protocol are also provided.

关键词： 5g Secure spectrum auction Bidders'bids'privacy Smart contract Public verification

An Image Steganography Algorithm Based on Quantization Index Modulation Resisting Scaling Attacks and Statistical Detection

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Computers, Materials & Continua 2018年第7期56卷 151-167页

作者： Yue Zhang Dengpan Ye Junjun Gan Zhenyu Li qingfeng cheng State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou 450001China Computer School of Wuhan University Wuhan 430072China Department of Computer Science University of YorkYork YO105GHUK

In view of the fact that the current adaptive steganography algorithms are difficult to resist scaling attacks and that a method resisting scaling attack is only for the nearest neighbor interpolation method,this paper proposes an image steganography algorithm based on quantization index modulation resisting both scaling attacks and statistical *** the spatial image,this paper uses the watermarking algorithm based on quantization index modulation to extract the embedded *** construct the embedding distortion function of the new embedded domain based on S-UNIWARD steganography,and use the minimum distortion coding to realize the embedding of the secret ***,according to the embedding modification amplitude of secret messages in the new embedded domain,the quantization index modulation algorithm is applied to realize the final embedding of secret messages in the original embedded *** experimental results show that the algorithm proposed is robust to the three common interpolation attacks including the nearest neighbor interpolation,the bilinear interpolation and the bicubic *** the average correct extraction rate of embedded messages increases from 50%to over 93% after 0.5 times-fold scaling attack using the bicubic interpolation method,compared with the classical steganography algorithm *** the algorithm proposed has higher detection resistance than the original watermarking algorithm based on quantization index modulation.

关键词： Image steganography anti-scaling attack anti-statistical detection quantization index modulation