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作者： Yu, Jia Kong, Fanyu Cheng, Xiangguo Hao, Rong Li, Guowen College of Information Engineering Qingdao University 266071 Qingdao China Shandong Provincial Key Laboratory of Computer Network 250014 Jinan China Institute of Network Security Shandong University 250100 Jinan China Key Lab of Cryptographic Technology and Information Security Ministry of Education Jinan 250100 China School of Computer Science and Technology Shandong Jianzhu University 250100 Jinan China

Forward-secure signatures are proposed to deal with the key exposure problem. Compared to regular signatures, forward-secure signatures have a special update algorithm that can evolve the new private key in each time period. Therefore, it can protect the security of signatures previous to the time period of key exposure. The efficiency is an important issue of forward-secure signatures. In this paper, we construct a new forward-secure signature scheme using bilinear maps. In this scheme, all performance parameters have complexities of log magnitude in terms of the total time periods. In addition, our scheme needs very few (only triple) pairing operations in the verifying algorithm, which is very important because the pairing operation is very time-consuming. This scheme is proved to be forward secure in the random oracle model assuming the CDH problem is hard. Finally, we give some applications of this scheme including constructing an intrusion-resilient signature scheme and constructing a forward-secure threshold signature scheme. © 2014 Elsevier Inc. All rights reserved.

关键词： Authentication

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Novel way to research nonlinear feedback shift register

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Science China(information Sciences) 2014年第9期57卷 161-174页

作者： ZHAO DaWei PENG HaiPeng LI LiXiang HUI SiLi YANG YiXian Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Zhejiang Provincial Key Lab of Data Storage and Transmission Technology Hangzhou Dianzi University National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center

In this paper,we regard the nonlinear feedback shift register(NLFSR)as a special Boolean network,and use semi-tensor product of matrices and matrix expression of logic to convert the dynamic equations of NLFSR into an equivalent algebraic *** on them,we propose some novel and generalized techniques to study ***,a general method is presented to solve an open problem of how to obtain the properties(the number of fixed points and the cycles with different lengths)of the state sequences produced by a given NLFSR,i.e.,the analysis of a given *** then show how to construct all 22n-(l-n)/22n-lshortest n-stage feedback shift registers(nFSR)and at least 22n-(l-n)-1/22n-l-1shortest n-stage nonlinear feedback shift registers(nNLFSR)which can output a given nonperiodic/periodic sequence with length ***,we propose two novel cycles joining algorithms for the construction of full-length ***,two algorithms are presented to construct 22n-2-1different full-length nNLFSRs,respectively.

关键词： nonlinear feedback shift register semi-tensor product Boolean network full-length nNLFSR binary sequence

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Android malware detection based on permission and behavior analysis

Android malware detection based on permission and behavior a...

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International Conference on Cyberspace Technology, CCT 2014

作者： Qin, Zhongyuan Xu, Yuqing Di, Yuxing Zhang, Qunfang Huang, Jie School of Information Science and Engineering Southeast University Nanjing Jiangsu China Key Lab of Information Network Security Ministry of Public Security Shanghai China Communication Department Nanjing Institute of Artillery Corps Nanjing Jiangsu China Computer Department Nanjing Institute of Artillery Corps Nanjing Jiangsu China

ISBN: (纸本)9781849199285

The development of mobile Internet and application store accelerates the spread of malicious applications on smartphones, especially on Android platform. In this paper, we propose an integrated Android malware detection scheme, combining permission and behavior analysis. For APK files which had been detected, their MD5 values are extracted as signature for detection. For APK files which had not been detected, detection is carried based on permission and behavior analysis. Behavior analysis contained taint propagation analysis and semantic analysis. Experiment results show that this system can detect the malware of privacy stealing and malicious deduction successfully.

关键词： Android malware

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A Provably secure Certificate based ring signature without pairing

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International Journal of network security 2014年第4期16卷 278-285页

作者： Qin, Zhiguang Xiong, Hu Li, Fagen School of Computer Science and Engineering University of Electronic Science and Technology of China No. 4 North Jianshe Road Chenghua District chengdu Sichuan 610054 China Key Lab of Network Security and Cryptology Fujian Normal University No. 8 Shangsan Road Cangshan District Fuzhou Fujian 350007 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences No. 19 Yuquan Road Shijingshan District Beijing 100190 China

In Eurocrypt 2003, Gentry introduced the notion of certificate-based encryption. The merit of certificate-based encryption lies in implicit certificate and no private key escrow. This feature is desirable especially for the efficiency and the real spontaneity of ring signature, which involve a large number of public keys in each execution. In this paper, we propose an efficient certificate-based ring signature scheme which does not require any pairing computation. Furthermore, this scheme is proven secure under the Discrete Logarithm assumption in the random oracle model. To the best of authors' knowledge, this is the first construction of certificate-based ring signature scheme in the literature that has such kind of feature.

关键词： Authentication

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A Robust Message Confidentiality Scheme with Privacy-preserving for Resource-Constrained DTNs

A Robust Message Confidentiality Scheme with Privacy-preserv...

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中国密码学会2014年密码算法学术会议

作者： Li Chao Zhang Yuqing Liu Xuefeng The author is with the Key Lab of Computer Networks and Information Security of Ministry of Educatio The author is with the National Computer Network Intrusion Protection Center GUCAS Beijing 100049

Delay Tolerate networks (DTNs) are highly partitioned networks and suffer from frequent disconnections,which differs significantly from traditional wireless ***,long delays and frequent end-to-end disconnections make security in DTNs more *** this paper,we propose a robust security scheme based on elliptic curve cryptography to provide message confidentiality and privacy-preserving for resource-constrained *** proposed scheme is characterized by a non-interactive manner,thus it is excellent for the delay and end-to-end disconnection ***,the scheme only requires point multiplication operations on both the sender and the ***,this scheme is suitable for resource-constrained DTNs.

关键词： DTNs Non-interactive Message authentication Privacy-preserving,security

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Android malware detection based on permission and behavior analysis

Android malware detection based on permission and behavior a...

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International Conference on Cyberspace Technology (CCT 2014)

作者： Zhongyuan Qin Yuqing Xu Yuxing Di Qunfang Zhang Jie Huang Key Lab of Information Network Security Ministry of Public Security Shanghai China School of Information Science and Engineering Southeast University Nanjing Jiangsu China Communication Department Nanjing Institute of Artillery Corps Jiangsu China Computer Department Nanjing Institute of Artillery Corps Jiangsu China

ISBN: (纸本)9781510802704

关键词： Android behavior analysis malware permission behavioral research permission Spyware Methyltestosterone Androids App Store

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A Memory-Based Continuous Query Index for Stream Processing

A Memory-Based Continuous Query Index for Stream Processing

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IEEE International Conference on Services Economics (SE)

作者： Cuiwen Xiong Peng Zhang Yan Li Shipeng Zhang Qingyun Liu Jianlong Tan Institute of Information Engineering University of Chinese Academy of Sciences Beijing China Nat. Eng. Lab. for Inf. Security Technol. Beijing Beijing China Nat. Eng. Lab. for Inf. Security Technol China National Computer network Emergency Response technical Team National Engineering Laboratory for Information Security Technologies Beijing China

Most of the "Big Data" applications, such as decision support and emergency response, must provide users with fresh, low latency results, especially for aggregation results on key performance metrics. However, disk-oriented approaches to online storage are becoming increasingly problematic. They do not scale grace-fully to meet the needs of large-scale Web applications, and improvements in disk capacity have far out-stripped improvements in access latency and bandwidth. To this end, the paper proposes a memorybased continuous query index to implement scalable and efficient aggregation query.

关键词： Arrays Indexes Big data Bandwidth Measurement Random access memory Dictionaries

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RLWE-based homomorphic encryption and private information retrieval

RLWE-based homomorphic encryption and private information re...

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5th IEEE International Conference on Intelligent networking and Collaborative Systems, INCoS 2013

作者： Zhang, Wei Liu, Shuguang Xiaoyuan, Yang Key Lab of Computer Network and Information Security under CAPF Xian China

ISBN: (纸本)9780769549880

A multi-bit somewhat homomorphic encryption scheme based on Learning With Errors over Rings (RLWE) assumption is provided, which use canonical embedding to transform elements over a ring into vectors, thus the operation of polynomial multiplication can be performed within Õ(nlog n) scalar operations, and cipher text size is reduced as well. CPA security of this scheme can be reduced into RLWE assumption. Moreover, an efficient private information retrieval protocol that employs this scheme is presented. © 2013 IEEE.

关键词： Cryptography

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Building trust and reputation in: A development framework for trust models implementation

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8th International Workshop on security and Trust Management, STM 2012

作者： Moyano, Francisco Fernandez-Gago, Carmen Lopez, Javier Network Information and Computer Security Lab University of Malaga 29071 Malaga Spain

ISBN: (纸本)9783642380037

During the last years, many trust and reputation models have been proposed, each one targeting different contexts and purposes, and with their own particularities. While most contributions focus on defining ever-increasing complex models, little attention has been paid to the process of building these models inside applications during their implementation. The result is that models have traditionally considered as ad-hoc and after-the-fact solutions that do not always fit with the design of the application. To overcome this, we propose an object-oriented development framework onto which it is possible to build applications that require functionalities provided by trust and reputation models. The framework is extensible and flexible enough to allow implementing an important variety of trust models. This paper presents the framework, describes its main components, and gives examples on how to use it in order to implement three different trust models. © Springer-Verlag Berlin Heidelberg 2013.

关键词： computers

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A P2P Reputation Model Based on P2P File-Sharing Behavioral Characteristics

A P2P Reputation Model Based on P2P File-Sharing Behavioral ...

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International Conference on Trustworthy Computing and Services, ISCTCS 2012

作者： Xin, Chao Han, Hui-jun Lin, Xiu-qin Wei, Geng-yu Lab of Computer Network and Information Security BUPT Beijing China Ministry of Education Beijing China

ISBN: (纸本)9783642357947

In recent years, P2P networks have become a focus in the industry. The P2P network is open and anonymous, providing the opportunity for false documents, malicious attacks and other malicious acts, so its trust and security issues have emerged. Building reputation model in the P2P network environment is an effective way to solve these problems, but traditional reputation model neglect the difference of pollution files. The more popular of pollution file, the more damage it will bring to P2P network. Tosolve this problem, a P2P reputation model based on P2P file-sharing behavioral characteristics is proposed. By analyzing the P2P file-sharing behavioral characteristics, determine the file's propagation degree. Usethe file's propagation degreeto calculate the files' evaluation value and nodes' reputation *** this means, increase the reliability of the reputation model, so as toimprove the P2P network security. © Springer-Verlag Berlin Heidelberg 2013.

关键词： network security

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