检索结果-内蒙古大学图书馆

Enhancing security of the Reduced-Operation Two-Factor Authentication by Using Ambient WiFi

Chinese Journal of Electronics 2018年第3期27卷 625-633页

作者： LIU Dong CHEN Jing DU Ruiying ZHANG Huanguo Key Laboratory of Aerospace Information Security and the Trusted Computing Ministry of Education School of ComputerWuhan University Science and Technology on Communication Security Laboratory North Automatic Control Technique Research Institute Collaborative Innovation Center of Geospatial Technology

Recently several reduced-operation two Factor authentication(2FA) methods have been proposed to improve the usability of traditional 2FA. The existing works cannot protect the user's password from online guessing attack and offline dictionary attack. They cannot resist the identity fraud attack caused by co-located attackers who have obtained the victim's password. To solve these problems, we provide a Wi Fi-based 2FA approach which can enhance security of the reduced-operation 2FA but not increase the complexity of the operation for a *** analyze our approach's security in terms of identity fraud attack resistance, salt guessing attack resistance, and password guessing attack resistance. We also implement a prototype system and test its performance in various scenarios, e.g. lab, library, and dormitory. The security analysis and experimental results show the effectiveness of our scheme for authentication.

关键词： Two factor authentication(2FA) Proximate authentication Fuzzy vault

来源：评论

学校读者我要写书评

暂无评论

Open World Recognition of communication Jamming Signals

引用

China communications 2023年第6期20卷 199-214页

作者： Yan Tang Zhijin Zhao Jie Chen Shilian Zheng Xueyi Ye Caiyi Lou Xiaoniu Yang School of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Science and Technology on Communication Information Security Control Laboratory Jiaxing 314033China

To improve the recognition ability of communication jamming signals,Siamese Neural Network-based Open World Recognition(SNNOWR)is *** algorithm can recognize known jamming classes,detect new(unknown)jamming classes,and unsupervised cluseter new *** network of SNN-OWR is trained supervised with paired input data consisting of two samples from a known *** the one hand,the network is required to have the ability to distinguish whether two samples are from the same *** the other hand,the latent distribution of known class is forced to approach their own unique Gaussian distribution,which is prepared for the subsequent open set *** the test,the unknown class detection process based on Gaussian probability density function threshold is designed,and an unsupervised clustering algorithm of the unknown jamming is realized by using the prior knowledge of known *** simulation results show that when the jamming-to-noise ratio is more than 0d B,the accuracy of SNN-OWR algorithm for known jamming classes recognition,unknown jamming detection and unsupervised clustering of unknown jamming is about 95%.This indicates that the SNN-OWR algorithm can make the effect of the recognition of unknown jamming be almost the same as that of known jamming.

关键词： communication jamming signals Siamese Neural Network Open World Recognition unsupervised clustering of new jamming type Gaussian probability density function

来源：评论

学校读者我要写书评

暂无评论

MILP-aided bit-based division property for ARX ciphers

引用

science China(Information sciences) 2018年第11期61卷 229-231页

作者： Ling SUN Wei WANG Ru LIU Meiqin WANG Key Laboratory of Cryptologic Technology and Information Security Ministry of EducationShandong University Science and Technology on Communication Security Laboratory No.30 Research Institute of China Electronics Technology Group Corporation State Key Laboratory of Cryptology

Division property, which was proposed by Todo [1]at EUROCRYPT 2015, is a new technique to detect integral property. It could explicitly depict the hidden properties between the traditional ALL and BALANCE properties in integral cryptanalysis [2], which made it an effective method to search integral distinguishers. The definition is given as follows.

关键词： MILP-aided bit-based division property for ARX ciphers ARX

来源：评论

学校读者我要写书评

暂无评论

Deep radio signal clustering with interpretability analysis based on saliency map

引用

Digital communications and Networks 2024年第5期10卷 1448-1458页

作者： Huaji Zhou Jing Bai Yiran Wang Junjie Ren Xiaoniu Yang Licheng Jiao School of Artificial Intelligence Xidian UniversityXi’an710071China Science and Technology on Communication Information Security Control Laboratory Jiaxing314033China

With the development of information technology,radio communication technology has made rapid *** radio signals that have appeared in space are difficult to classify without manually *** radio signal clustering methods have recently become an urgent need for this ***,the high complexity of deep learning makes it difficult to understand the decision results of the clustering models,making it essential to conduct interpretable *** paper proposed a combined loss function for unsupervised clustering based on *** combined loss function includes reconstruction loss and deep clustering *** clustering loss is added based on reconstruction loss,which makes similar deep features converge more in feature *** addition,a features visualization method for signal clustering was proposed to analyze the interpretability of autoencoder utilizing Saliency *** experiments have been conducted on a modulated signal dataset,and the results indicate the superior performance of our proposed method over other clustering *** particular,for the simulated dataset containing six modulation modes,when the SNR is 20dB,the clustering accuracy of the proposed method is greater than 78%.The interpretability analysis of the clustering model was performed to visualize the significant features of different modulated signals and verified the high separability of the features extracted by clustering model.

关键词： Unsupervised radio signal clustering Autoencoder Clustering features visualization Deep learning interpretability

来源：评论

学校读者我要写书评

暂无评论

Incremental Learning of Radio Modulation Classification Based on Sample Recall

引用

China communications 2023年第7期20卷 258-272页

作者： Yan Zhao Shichuan Chen Tao Chen Weiguo Shen Shilian Zheng Zhijin Zhao Xiaoniu Yang School of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Science and Technology on Communication Information Security Control Laboratory Jiaxing 314033China Institute of Cyberspace Security Zhejiang University of TechnologyHangzhou 310023China

Radio modulation classification has always been an important technology in the field of *** difficulty of incremental learning in radio modulation classification is that learning new tasks will lead to catastrophic forgetting of old *** this paper,we propose a sample memory and recall framework for incremental learning of radio modulation *** data with different signal-to-noise ratios,we use a partial memory strategy by selecting appropriate samples for *** compare the performance of our proposed method with three baselines through a large number of simulation *** show that our method achieves far higher classification accuracy than finetuning method and feature extraction ***,it performs closely to joint training method which uses all old data in terms of classification accuracy which validates the effectiveness of our method against catastrophic forgetting.

关键词： radio modulation classification incremen-tal learning deep learning convolutional neural net-work.

来源：评论

学校读者我要写书评

暂无评论

The security analysis of PhpBB forum

The security analysis of PhpBB forum

引用

International Conference on Cyberspace technology, CCT 2014

作者： Zhang, Lijun Fan, Jia Science and Technology on Communication Security Laboratory ChengDu China

ISBN: (纸本)9781849199285

PhpBB forum is one of the widely applied network forums. In this paper, we investigate the security of this kind of forum. We analyze the whole process of security mechanism related to user's password, including password checking in registration, password storage in database and password identification when users log in. Our research indicates that security of the earlier version is weak, and subsequent 3.0 version provides more secure cryptographic algorithm. However, in order to acquire the compatibility, the forum software retains the weak algorithm which brings the potential security threat. According to this vulnerability, we design the corresponding attack while we also propose the countermeasures.

关键词： Authentication

来源：评论

学校读者我要写书评

暂无评论

Optimization of WinRAR Password Cracking Algorithm Based on Heterogeneous Computing 21

Optimization of WinRAR Password Cracking Algorithm Based on ...

引用

21st IEEE International Conference on communication technology, ICCT 2021

作者： Yin, Hao Ni, Lulin Science and Technology on Communication Security Laboratory Chengdu China

ISBN: (纸本)9781665432061

Different versions of WinRAR compression software use SHA-1, SHA-256 as the core and use AES-128, AES-256, and CRC32 as verification encryption. WinRAR passwords are difficult to crack, and high-efficiency hardware accelerators are usually utilized for passwords recovery. However, the unrar decompression function cannot distinguish between damaged files and incorrect passwords. The SHA-1 and SHA-256 hash algorithms have a considerable number of cycles. This paper proposes a method of password recovery based on heterogeneous computing and uses three optimization methods to solve the collision problem and accelerate the password recovery algorithm. Our experiments show that the password collision problem can be solved without reducing the password cracking speed. The optimized implementation WinRAR3 increases by 50%, while winRAR5 increases by two times. © 2021 IEEE.

关键词： Verification

来源：评论

学校读者我要写书评

暂无评论

Parametrical Construction of MDS Based on Block Cyclic Shift 21

Parametrical Construction of MDS Based on Block Cyclic Shift

引用

4th International Conference on Computer science and Software Engineering, CSSE 2021

作者： Wu, You Wang, Jin-Bo Zhang, Wen-Zheng Science and Technology on Communication Security Laboratory Institute of Southwestern Communication China

ISBN: (纸本)9781450390675

With the advent of the information age, using the same standard algorithm with fixed logic is difficult to meet the increasingly diversified cryptographic application requirements of cloud computing, Internet of things and 5g network environment. Dynamic variable cryptographic algorithm can improve the security and adaptability of cryptographic algorithm, which is the focus of cryptographic algorithm research and design at present. The key to the research and design of dynamic variable cryptographic algorithms is to find dynamic variable cryptographic components with good cryptographic performance. MDS (Maximum Distance Separable) is often used in the diffusion layer design of block ciphers because of its optimal diffusion characteristics. Traditional MDS transformation generally adopts MDS matrices in the finite field. While using them in dynamic variable cryptographic algorithms, it is difficult to realize parametric application because of their logical differences and implementation imbalance. Aiming at the lightweight MDS variable design requirements of dynamic variable cryptographic algorithm, this paper firstly proposes a MDS parametric construction method based on block cyclic shift and XOR operation. Compared with the traditional MDS construction in the finite field, we obtain a class of MDS component clusters with larger scale which is convenient for software and hardware implementation. The main design idea is to convert the multiplication operation in the finite field into cyclic shift operation, and introduce parameters to participate in the MDS operation in the way of direct XOR. Based on the MDS matrix in AES diffusion layer, two kinds of variable MDS diffusion layers are given by this method. The consistent structure based on cyclic shift and XOR operation is adopted, and each parameter corresponds to different MDS transformation, which can be used for the parametric design of diffusion layer of dynamic variable cryptographic algorithm. © 2021 ACM.

关键词： Diffusion

来源：评论

学校读者我要写书评

暂无评论

The Design Method of Micro-Unit Cryptographic Service Framework

The Design Method of Micro-Unit Cryptographic Service Framew...

引用

2023 International Conference on Networking and Network Applications, NaNA 2023

作者： Zhao, Qi Tian, Bo Liu, Yiming Science and Technology on Communication Security Laboratory Chengdu China

ISBN: (纸本)9798350327380

In order to adapt to the rapid development of information technology in the digital age, it is necessary to build a general cryptographic service delivery capability to provide security protection for data exchange in various *** services need to be combined with a variety of complex cryptographic technologies to establish a secure foundation. At the same time, the efficiency of implementation must be guaranteed. In order to meet this demand, a micro-unit cryptographic service framework is proposed. Based on microservices, plug-in, service engine and other technologies, a micro-unit crypto service platform supporting functional reconfiguration is designed. The programmable micro-unit crypto component can generate service links according to the quality of service, and provide flexible access methods for crypto service. The crypto function of the client and the server can be divided into fine-granularity units, which can be combined into a more flexible crypto system which can adapt to the rapid change of security requirements and deal with new security threats. Based on this framework, crypto service providers can quickly establish a scalable crypto service system that can adapt to various scenarios, meet different security levels and be easily expanded. © 2023 IEEE.

关键词： Electronic data interchange

来源：评论

学校读者我要写书评

暂无评论

A security Analysis of the Authentication Mechanism of Password Managers 21

A Security Analysis of the Authentication Mechanism of Passw...

引用

21st IEEE International Conference on communication technology, ICCT 2021

作者： Yu, Fei Yin, Hao Science and Technology on Communication Security Laboratory Chengdu China

ISBN: (纸本)9781665432061

A password manager is a tool that generates, stores and manages user's passwords for local and online services. The security of the popular password managers relies on their authentication mechanism. This paper gives a brief security analysis of the authentication mechanism of three popular cross-platform password managers. We will analyze their authentication mechanism through a unified security analysis model. Based on this mode and experiments on GPU, we show that the security can be reduced to the master password and iteration number. © 2021 IEEE.

关键词： Managers

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：