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2012 International Conference on Solid State Devices and Materials Science(SSDMS 2012)

作者： Yu Li Yong Zhao Siyuan Xin College of Computer Science and Technology Beijing University of Technology Key Lab of Information Network Security Ministry of Public Security Institute of Electronic Technology the PLA Information Engineering University

The privilege in the operating system(OS) often results in the break of confidentiality and integrity of the system. To solve this problem, several security mechanisms are proposed, such as Role-based Access Control, Separation of Duty. However, these mechanisms can not eliminate the privilege in OS kernel layer. This paper proposes a Separation of Three Powers Architecture(STPA). The authorizations in OS are divided into three parts: System Management Subsystem(SMS), security Management Subsystem(SEMS) and Audit Subsystem(AS). Mutual support and mutual checks and balances which are the design principles of STPA eliminate the administrator in the kernel layer. Furthermore, the paper gives the formal description for authorization division using the graph theory. Finally, the implementation of STPA is given. Proved by experiments, the Separation of Three Powers Architecture we proposed can provide reliable protection for the OS through authorization division.

关键词： Separation of Three Powers Architecture Authorization Graph Separation of Privilege Trusted Operating System

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Fully Secure Broadcast Encryption for Inner-Product Predicates

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Procedia Engineering 2012年 29卷 316-320页

作者： Sun Jin Hu Yu-pu Department of Application Mathematics in Xi’an University of Technology Xi’an 710048 China Key Lab of Computer Network and Information Security Xidian University Xi’an 710071 China

According to the broadcast encryption scheme with wide applications in the real world without considering its security and efficiency in the model simultaneously, a fully secure broadcast encryption for inner-product predicates (IPBE) was proposed by combining with Waters dual system encryption methodology and inner-product predicate encryption. Based on the standard model, the scheme can not only achieve constant-size key and ciphertext, but also guarantee the security of the plaintext M as well as the security of the attribute vectors. Furthermore, the scheme is proved by using a non-interactive static assumption and the analysis results indicated that the scheme is fully secure.

关键词： broadcast encryption full security inner-product predicate encryption provably secure

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CCA-secure unidirectional proxy broadcast re-encryption in the standard model

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Journal of Computational Information Systems 2012年第14期8卷 5909-5916页

作者： Sun, Jin Hu, Yupu Department of Application Mathematics in Xi'an University of Technology Xi'an 710048 China Key Lab. of Computer Network and Information Security Xidian University Xi'an 710071 China

Considering construct a chosen-ciphertext secure unidirectional PRE in the adaptive corruption model is still an important question and the broadcast encryption with wide applications in the real world, the first CCA-secure unidirectional proxy broadcast re-encryption (PBRE) scheme was proposed under the standard model. By using a new ciphertext component in our scheme, the challenger enable to successfully generate the challenge ciphertext for the adversary, even if the adversary is allowed to adaptively corrupt users. Simultaneously, the PBRE scheme is proven chosen-ciphertext security in the adaptive corruption model. Compared with the best known existing unidirectional PRE scheme, new scheme enjoy the advantages of both higher efficiency and stronger security. © 2011 by Binary Information Press.

关键词： Cryptography

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Malware Detection in Smartphone Using Hidden Markov Model

Malware Detection in Smartphone Using Hidden Markov Model

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International Conference on Multimedia Information networking and security (MINES)

作者： Kejun Xin Gang Li Zhongyuan Qin Qunfang Zhang Nanjing Sample Technology Co. Ltd. Nanjing Jiangsu China Ministry of Public Security Key Lab of Information Network Security Shanghai China Computer Department Nanjing Institute of Artillery Corps Nanjing Jiangsu China

ISBN: (纸本)9781467330930

In recent years, smart phone technology is becoming increasingly popular. The dangers of mobile phone malwares are becoming more and more serious. In this paper we present a new mobile smartphone malware detection scheme based on Hidden Markov Model (HMM) which is different from the traditional signature scanning methods. Firstly, we monitor the key press and system function call sequence, and take the key press as hidden state. After decoding HMM model, abnormal process can be detected using the matching rate of HMM output to the actual key press sequence. The experimental results demonstrate that the proposed method can effectively detect mobile malwares.

关键词： Hidden Markov models Malware Presses Mobile communication computers Mathematical model

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Quantum Secure Direct Communication with Five-Qubit Entangled State

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Chinese Physics Letters 2011年第3期28卷 17-20页

作者： LIN Song GAO Fei LIU Xiao-Fen School of Mathematics and Computer Science Fujian Normal UniversityFuzhou 350007 Key Lab of Network Security and Cryptography Fujian Normal UniversityFuzhou 350007 State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876

Recently,a genuine five-qubit entangled state has been achieved by Brown et al.[***.A 38(2005)1119].Later it was indicated that this state can be used for quantum teleportation and quantum state *** we build a quantum secure direct communication protocol with this state,and prove that it is secure in ideal *** the protocol,the sender performs unitary transformations to encode a secret message on his/her particles and sends them to the *** receiver then performs projective determinate measurement to decode the secret message ***,this protocol utilizes superdense coding to achieve a high intrinsic efficiency and source capacity.

关键词： conditions capacity quantum

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The availability of fast-flux service networks

The availability of fast-flux service networks

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2011 International Conference on Selected Topics in Mobile and Wireless networking, iCOST 2011

作者： Xu, Yunfeng Lu, Yansheng Guo, Zhengbiao School of Computer Science and Technology Hua Zhong University of Science and Technology Wuhan China Hubei Province Public Security Bureau to Defend the Corps Cyber Security Key Lab of Information NetWork Security Ministry of Public Security China

ISBN: (纸本)9781457720048

Fast-flux service network (FFSN) is consisted of a large scale of computers which have two main functions. Firstly, by providing a pool of huge number of IP addresses, the controller of FFSN can choose the IPs to provide services for their own domain name. Secondly, these computers can be served as agents to hide mother-ship. The character of FFSN is that the DNS records of domain name changes constantly at a high frequency. In this paper, we analyze the issue on the reliability of FFSN. The issue is resulted from the uncontrollable nodes of FFSN. We establish a model to describe the reliability by the theory of Poisson Process, and analyze the relationship between the reliability of FFSN and its size. © 2011 IEEE.

关键词： Reliability theory

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Abuse-freeness electronic payment protocol

Abuse-freeness electronic payment protocol

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3rd IEEE International Conference on Intelligent networking and CollaborativeSystems, INCoS 2011

作者： Fan, Kai Wang, Yue Li, Hui Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an China Xi'an Branch Shaanxi Telecom Ltd. Xi'an China

ISBN: (纸本)9780769545790

Abuse-freeness is one of the most interesting new problems in the electronic payment security today. It is an effective supplementary for the fairness. It is confused for researchers how to get real abuse-freeness in electronic payment. An abuse-freeness electronic payment protocol for real goods is proposed in this paper. The protocol has the abuse-freeness by introducing a trusted third party and using the concurrent signature and it has prevented both sides in payment to originate and terminate protocol maliciously. At the same time fairness and security are also achieved in the proposed protocol. © 2011 IEEE.

关键词： Contracts Equations Forgery Manuals Process control Protocols security abuse-freeness abuse-freeness electronic payment protocol concurrent signature concurrent signature digital signatures electronic money electronic payment protocol electronic payment security trusted third party trusted third party (TTP)

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A topic partition algorithm based on average Sentence similarity for interactive text

A topic partition algorithm based on average Sentence simila...

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2011 7th International Conference on Computational Intelligence and security, CIS 2011

作者： Zhu, Haiping Chen, Yan Yang, Yang Gao, Chao Department of Computer Science and Technology Xi'an Jiaotong University Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech. R and D Xi'an China Ministry of Education Key Lab. for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an 710049 China Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9780769545844

Based on the research and analysis of interactive text properties, the word frequency statistics and synonyms merger are imported to obtain the keywords of interactive text. The Sentence similarity is used to describe the degree of coupling between sentences. Then a novel topic partition algorithm based on average sentence similarity is proposed. The experimental results show the effectiveness of the algorithm. Along with the mining of the deep correlations among texts, the algorithm precision and accuracy will be improved. © 2011 IEEE.

关键词： Average Sentence Similarity component Frequency Statistics Interactive Text Topic Partition

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Forward secure proxy blind signature scheme

Forward secure proxy blind signature scheme

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3rd IEEE International Conference on Intelligent networking and CollaborativeSystems, INCoS 2011

作者： Fan, Kai Wang, Yue Li, Hui Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an China Xi'an Branch Shaanxi Telecom Ltd. Xi'an China

ISBN: (纸本)9780769545790

There is no forward security in any proxy blind signature schemes today. The lack of forward security will impact the system security tremendously if the key is stolen. To avoid such a security problem this paper proposes a forward secure proxy blind signature scheme which employs the key evolution mechanism in a newly proposed proxy blind signature scheme. The security of proxy blind signature and the forward security are both analyzed in the proposed scheme. Even if the current signature key is compromised, the attacker cannot forge signatures as if they had been generated before the key leakage. That is to say, signatures signed before the leakage are still valid. © 2011 IEEE.

关键词： Authentication

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A trust-personality mechanism for emotion compensation

A trust-personality mechanism for emotion compensation

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International Conference on Advanced Learning Technologies

作者： Qin, Jiwei Zheng, Qinghua Tian, Feng Ministry of Education Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an China Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9780769543468

E-learning provides an unprecedented flexibility and convenience for learners via breaking the limitation of spacetime. Most researchers are only concerned about the learner's cognitive and construct a great amount of substantive digital learning resources, however they neglect of the learners' affect in current e-learning systems. In this paper, we focus primarily on the negative affect of learners, and propose an emotion compensation mechanism associated with trust and personality traits in traditional recommender technology. First, we analyze the difference between emotion compensation and traditional recommender. Next, the score of trust is calculated with historical behavior;otherwise depend on similarity of personality traits without historical experience. We use trustworthiness to replace similarity as prediction weight in trust filtering process. At last we do experiments with data collected in previous system named emotion-chatting. Compared with results of experiments between traditional recommender and trust-personality recommender, the average of accuracy is improved 4 points in percentage. © 2011 IEEE.

关键词： E-learning

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