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Forgeability of Wang-Zhu-Feng-Yau’s Attribute-Based Signature with Policy-and-Endorsement Mechanism

Journal of Computer Science & technology 2013年第4期28卷 743-748页

作者：葛爱军黄欣沂陈成马传贵张锐 State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Information Science and Technology Institute State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Fujian Provincial Key Laboratory of Network Security and Cryptology School of Mathematics and Computer ScienceFujian Normal University Institute of Software Chinese Academy of Sciences

Recently, Wang et al. presented a new construction of attribute-based signature with policy-and-endorsement mechanism. The existential unforgeability of their scheme was claimed to be based on the strong Diffie-Hellman assumption in the random oracle model. Unfortunately, by carefully revisiting the design and security proof of Wang et alfs scheme, we show that their scheme cannot provide unforgeability, namely, a forger, whose attributes do not satisfy a given signing predicate, can also generate valid signatures. We also point out the flaws in Wang et al.＇s proof.

关键词： attribute-based signature existential unforgeability policy-and-endorsement

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DMAT: A new network and computer attack classification

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Journal of Engineering Science and technology Review 2013年第5期6卷 101-106页

作者： Jiang, Wei Tian, Zhi-Hong Cui, Xiang College of Computer Science Beijing University of Technology Beijing 100124 China School of Computer National University of Defense Technology Changsha 410073 China Key Laboratory of Information and Network Security Ministry of Public Security Shanghai 201204 China School of Computer Science and Technology Harbin Institute of Technology Haerbin 150001 China The Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China

With the rapid development of computer network and information technology, the Internet has been suffering from a variety of security attacks over the past few years. Attacks have become both numerous and complex, and the defender can not understand. In order to understand and defend against cyber attacks, it is necessary to understand the kind of attack. In this paper, we study computer and network attacks, and introduce a classification of them and propose a cyber attack classification called DMAT (Defense-oriented Multidimensional Attack Taxonomy). We use nine categories to describe the characteristic of the attack, which are attack target, attack impact, attack purpose, attack cost, attack exploiting, attack source, attack automation, attack loss and defense. The ninth category in the DMAT, classification by defense, is used to provide the defender with instructions of how to defense an attack. Compared to the existing taxonomies, our taxonomy efficiently classifies complex attacks and guide the defender to defense the possible attack. © 2013 Kavala Institute of technology. All rights reserved.

关键词： network security

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Efficient public key cryptosystem resilient to key leakage chosen ciphertext attacks 1

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Cryptographers' Track at the RSA Conference 2013, CT-RSA 2013

作者： Liu, Shengli Weng, Jian Zhao, Yunlei Dept. of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China Department of Computer Science Emergency Technology Research Center of Risk Evaluation and Prewarning on Public Network Security Jinan University China Software School Fudan University Shanghai 201203 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China Shanghai Key Laboratory of Scalable Computing and Systems Shanghai China

ISBN: (数字)9783642360954

ISBN: (纸本)9783642360947

Leakage-resilient public key encryption (PKE) schemes are designed to resist "memory attacks", i.e., the adversary recovers the cryptographic key in the memory adaptively, but subject to constraint that the total amount of leaked information about the key is bounded by some parameter λ. Among all the IND-CCA2 leakage-resilient PKE proposals, the leakage-resilient version of the Cramer-Shoup cryptosystem (CS-PKE), referred to as the KL-CS-PKE scheme proposed by Naor and Segev in Crypto09, is the most practical one. But, the key leakage parameter λ and plaintext length m of KL-CS-PKE are subject to λ + m ≤ log q - ω(log κ), where κ is security parameter and q is the prime order of the group on which the scheme is based. Such a dependence between λ and m is undesirable. For example, when λ (resp., m) approaches to log q, m (resp., λ) approaches to 0. In this paper, we designed a new variant of CS-PKE that is resilient to key leakage chosen ciphertext attacks. Our proposal is λ ≤ log q - ω(log κ) leakage-resilient, and the leakage parameter λ is independent of the plaintext space that has the constant size q (exactly the same as that in CS-PKE). The performance of our proposal is almost as efficient as the original CS-PKE. As far as we know, this is the first leakage-resilient CS-type cryptosystem whose plaintext length is independent of the key leakage parameter, and is also the most efficient IND-CCA2 PKE scheme resilient to up to log q - ω(log κ) leakage. © 2013 Springer-Verlag.

关键词： Public key cryptography

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Corrigendum to “A variable-length model for masquerade detection” [J. Syst. Softw. 85 (2012) 2470–2478]

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Journal of Systems and Software 2013年第3期86卷 868-868页

作者： Xi Xiao Xinguang Tian Qibin Zhai Shutao Xia Graduate School at Shenzhen Tsinghua University 518055 Shenzhen China State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences 100049 Beijing China Key Laboratory of Network Science and Technology Institute of Computing Technology Chinese Academy of Sciences 100190 Beijing China

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A secure message delivery scheme with path tracking for delay tolerant networks

A secure message delivery scheme with path tracking for dela...

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2012 1st IEEE International Conference on Communications in China, ICCC 2012

作者： Jia, Zhongtian Raffay, Muhammad Ali Li, Lixiang Lin, Xiaodong Yang, Yixian Shandong Provincial Key Laboratory of Network Based Intelligent Computing University of Jinan Jinan 250022 China Information Security Center Beijing University of Posts and Telecommunications Beijing 100876 China Faculty of Business and Information Technology University of Ontario Institute of Technology Oshawa ON L1H 7K4 Canada

ISBN: (纸本)9781467328159

In delay tolerant networks (DTNs), message delivery is operated in an opportunistic way through store-carry and forward relaying, and every DTN node is in anticipation of cooperation for data forwarding from others. Unfortunately, there always exist some selfish nodes that are reluctant to contribute to this cooperative data forwarding procedure so as to save their valuable storage buffer, limited computation power and precious energy. In order to stimulate nodes' willingness to participate in data forwarding, a number of incentive schemes have been proposed recently. However, most existing incentive schemes simply ignore efforts of nodes involved in message delivery if messages delivered fail to reach their destinations. Due to the nature of DTN, such as intermittent connectivity, it is not unusual to have unreliable message delivery, which results in unrewarded or wasted efforts for participating nodes and may discourage them from participating in future data forwarding. Therefore, it is crucial to recognize contribution of every node involved in a data forwarding procedure even the message it helps to forward doesn't successfully reach its destination. However, how to track all delivery paths so as to give every intermediate node some incentive for their cooperative efforts of data forwarding is still an open research problem. To address this problem, we propose a secure message forwarding scheme with path tracking. The proposed method is end-to-end secure with data source and identity authentication. In addition, it can thwart some well known attacks including edge inserting attack, sibling inserting attack and free riding attack. © 2012 IEEE.

关键词： Delay tolerant networks

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A secure message delivery scheme with path tracking for delay tolerant networks

A secure message delivery scheme with path tracking for dela...

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IEEE International Conference on Communications in China (ICCC)

作者： Zhongtian Jia Muhammad Ali Raffay Lixiang Li Xiaodong Lin Yixian Yang Information Security Center Beijing University of Posts and Telecommunications China Shandong Provincial Key Laboratory of Network based Intelligent Computing University of Jinan Jinan China Faculty of Business and Information Technology Institute of Technology University of Ontario Oshawa ONT Canada

关键词： Nickel Public key Protocols Relays Joining processes

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Analysis on Token-Controlled Public key Encryption

Analysis on Token-Controlled Public Key Encryption

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International Conference on Mobile Ad-hoc and Sensor networks, MSN

作者： Changlu Lin Yong Li Sriramkrishnan Srinivasan Li Lu Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou China Key Laboratory of Communication & Information Systems Beijing Municipal Commission of Education Beijing Jiaotong University Beijing China Department of Computing University of Surrey Guildford UK School of Computer Science University of Electronic Science and Technology Chengdu China

ISBN: (纸本)9781467358088

In this paper, we analyze on the use of token-controlled public key encryption (TCE)schemes. We argue that for many of the applications in some possibilities of application in financial or legal scenarios, for example, the millionaire's will problem, the `private-opening' commitment, the scheduled payment problem, and the sealed-bid auctions and electronic lotteries problem, in the literature, the use of token-controlled public key encryption on its own, leads to inadequate solutions. We suggest that when considering applications of TCE, it is advisable to pay close attention to the lack of authentication and incorporate defences against the problems highlighted in this paper.

关键词： Public key encryption Token-controlled public key encryption Authentication security and privacy Public key encryption Authentication Trichloroethylene

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A method of zero self-modification and temperature compensation for indoor air quality etection based on a software model

A method of zero self-modification and temperature compensat...

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International Conference on Control, Automation and Systems ( ICCAS)

作者： Cuiping Li Jiuqiang Han Qibin Huang Xiaoqiang Dong Xuequan Ding Yaming Ding Dianguo Hang Ning Mu Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xian Jiaotong University Xian Shanxi China Beijing Institute of Pharmaceutical Chemistry Beijing China Beijing Kang Er Xing Technology Development Company Limited Beijing China Beijing Kang Er Xing Technology Development Co. Ltd. Beijing 100088 P. R. China

It is very difficult to apply non-dispersive infrared sensor to detect the indoor air quality and maintain very low zero and temperature drift over long periods. Frequently manual zero setting and calibration are required. To solve the issues of zero and temperature drift of non-dispersive infrared sensor, a software model based on zero gas intensity, reference channels intensity, standard temperature, environmental temperature, temperature drift coefficient, etc. has been established to automatically modify and compensate the zero and temperature drift existing in the long-term continuous operation of the infrared sensor. The test result and long-term application indicate the detection precision of the instrument is less than 5%F.S in various changing environmental conditions. The average detection precision of carbon dioxide has been improved from 9.26% before comprehensive processing to 1.23% after processing, while the average detection precision of methane has been improved from 10.61% before comprehensive processing to 0.70% after processing. As a result, the disadvantages existing in many gas detectors including poor stability and short calibration cycle have been overcome, thus effectively improving the detection precision and stability of the instrument and reducing the maintenance cost.

关键词： Temperature sensors Temperature measurement Temperature Infrared sensors Standards Instruments Thermal stability

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Anomaly detection of user behavior based on DTMC with states of variable-length sequences

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The Journal of China Universities of Posts and Telecommunications 2011年第6期18卷 106-115页

作者： XIAO Xi XIA Shu-tao TIAN Xin-guang ZHAI Qi-bin Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Network Science and Technology Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

In anomaly detection, a challenge is how to model a user＇s dynamic behavior. Many previous works represent the user behavior based on fixed-length models. To overcome their shortcoming, we propose a novel method based on discrete-time Markov chains （DTMC） with states of variable-length sequences. The method firstly generates multiple shell command streams of different lengths and combines them into the library of general sequences. Then the states are defined according to variable-length behavioral patterns of a valid user, which improves the precision and adaptability of user profiling. Subsequently the transition probability matrix is created. In order to reduce computational complexity, the classification values are determined only by the transition probabilities, then smoothed with sliding windows, and finally used to discriminate between normal and abnormal behavior. Two empirical evaluations on datasets from Purdue University and AT＆T Shannon Lab show that the proposed method can achieve higher detection accuracy and require less memory than the other traditional methods.

关键词： intrusion detection anomaly detection shell command discrete-time Markov chain （DTMC）

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An architecture description language based on dynamic description logics for self-healing systems

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International Journal of Advancements in computing technology 2012年第18期4卷 89-96页

作者： Wang, Zhuxiao Peng, Hui Guo, Jing Wu, Kehe Cui, Wenchao Wang, Xiaofeng School of Control and Computer Engineering State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China Education Technology Center Beijing International Studies University Beijing 100024 China National Computer Network Emergency Response Technical Team/Coordination Center of China Beijing 100029 China School of Control and Computer Engineering Institute of Electric Information Security Engineering Research Center of Power Information North China Electric Power University Beijing 102206 China Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

As biological systems exhibit adaptation, healing and robustness in the face of changing environmental behavior, this paradigm has actuated research dealing with the concept of self-healing systems, which attempt to heal themselves in the sense of recovering from malicious attacks and rectifying of system faults. The goal of self-healing systems is to provide survivable systems that require high dependability, robustness, adaptability, and availability. Such systems maintain one or more models, whether external or internal, at run time as a basis for identifying problems and resolving them. This article describes an architectural description language, called ADML, which is being developed as a new formal language and/or conceptual model for representing evolving software architectures. The ADML embraces dynamic change as a fundamental consideration, supports a broad class of adaptive changes at the architectural level, and offers a uniform way to represent and reason about both static and dynamic aspects of self-healing systems. Because the ADML is based on the Dynamic Description Logic DDL(SHON (D)), which can represent both dynamic semantics and static semantics under a unified logical framework, architectural ontology entailment for the ADML languages can be reduced to knowledge base satisfiability in DDL(SHON (D)), and dynamic description logic algorithms and implementations can be used to provide reasoning services for ADML. In this article, we present the syntax of ADML, explain its underlying semantics using the Dynamic Description Logic DDL(SHON (D)), and exemplify our approach by applying it to the domain of load balancing a wireless remote-access system;the preliminary results certify the potential of the approach.

关键词： Formal languages

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