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1st International Conference on Semantics, Knowledge and Grid, SKG 2005

作者： Wang, Kun Su, Ruidan Li, Zengxin Cai, Zhen Zhou, Lihua Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi'an 710071 China National Info Security Engineering and Technology Research Center Beijing 100093 China

ISBN: (纸本)0769525342

Complicated information system (CIS) contains many inhomogeneous applications which require security, interoperability, extensibility. The paper presents a secure CIS architecture model to conduct the construction or reconstruction of CIS, Using layered method, it divides CIS into modules and reduces system complexity. Web service technology is widely adopted in layers to fulfill interoperability and extensibility. It uses encryption support layer, security protection and reliability support layer to guarantee system security and stability in different aspects. It uses system management layer to make CIS administrable. It suits highly security-critical environment such as government and bank. Been properly simplified, it can be applied to relative simple information system too. © 2006 IEEE.

关键词： information systems

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A mathematical approach to disaster recovery planning

A mathematical approach to disaster recovery planning

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1st International Conference on Semantics, Knowledge and Grid, SKG 2005

作者： Wang, Kun Yin, Zhonghai Yuan, Feng Zhou, Lihua Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi'an 710071 China National Info Security Engineering and Technology Research Center Beijing 100093 China

ISBN: (纸本)0769525342

It is crucial for highly security-critical information systems to accurately control the disaster recovery activities. Using optimization theory, we present a disaster recovery planning mathematical model. The model uses mathematical method to express diverse entities in information and disaster recovery system such as applications, facilities, resources, sub disaster recovery plans, budget, etc. It classifies various resources according to their utilization and payment, and identifies the significance of applications and the conflicts among sub disaster recovery plans. Through expressing relationships among applications, facilities, resources and sub plans, this model selects the best set of sub plans. This model has less subjective parameter and can evaluate disaster recovery planning objectively and quantitatively. © 2006 IEEE.

关键词： information systems

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New methods to construct cheating immune multisecret sharing scheme

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1st SKLOIS Conference on information security and Cryptology, CISC 2005

作者： Ma, Wen Ping Zhang, Fu Tai Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi'an 710071 China School of Mathematics and Computer Science Nanjing Normal University Nanjing 210097 China

ISBN: (纸本)3540308555

In this paper, the constructions of cheating immune secret sharing and multisecret sharing are studied. Based on the theories of matrix and linear block codes over finite field, some new methods to construct cheating immune secret sharing, strictly cheating immune secret sharing and multisecret sharing immune against cheating are proposed. Some cryptographic properties of the constructed secret sharing are analyzed as well. © Springer-Verlag Berlin Heidelberg 2005.

关键词： security of data

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New generalized self-shrinking generator on GF(q)

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Dianzi Yu Xinxi Xuebao/Journal of Electronics and information Technology 2005年第7期27卷 1127-1130页

作者： Gao, Jun-Tao Hu, Yu-Pu Dong, Li-Hua Computer Networking and Information Security Key Lab. Xidian University Xi'an 710071 China

A new q-ary generalized self-shrinking generator is presented. The main difference between the new generator and the old one is the output mode. It is shown that there is good correlation between sequences in the large sequence family, and sequences are balanced in a least period. Simultaneously, the lower bounds of the least period are provided, and the family of sequences takes on a rich group structure and linear space structure.

关键词： Correlation Generalized self-shrinking sequences Linear complexity Privacy communication

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New fast algorithm for constructing depressed functions

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Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University 2005年第5期32卷 790-793页

作者： Chen, Jie Hu, Yu-Pu Wei, Yong-Zhuang Key Lab. of Computer Networks and Information Security Xidian Univ. Xi'an 710071 China

This paper presents a new fast algorithm for constructing depressed functions g based on cryptographic functions splitting idea. By splitting different selected variables using the algorithm, we can construct a system of equations after ⌊k/2⌋ times of function decomposition and solving the system of equations will result in the depressed functions g. The degree of the functions g solved by this algorithm is at most ⌊k/2⌋ such that the degree of f*g is at most ⌈k/2⌉. Its computational complexity is given as O(2k/2)w+2, which is lower than the computational complexity O((2k-1)w) available when k is large. The result turns out that depressed functions g can be constructed in lower complexity.

关键词： information technology

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A new approach for early detection of Internet worms based on connection degree

A new approach for early detection of Internet worms based o...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Chen Bo Bin-Xing Fang Xiao-Chun Yun National Computer Information Content Security Key Laboratory Harbin Institute of Technology Harbin China National Computer Network and Information System Security Administration Center Beijing China

In recent years, Internet-scale worm incidents occurred many times. People wonder at the speediness of the worm spread and the severe damage to the Internet. So people began to find methods to detect worms as quickly as possible. The paper first describes a worm behavior and propagation model. And then based on it, a new approach for early detection of Internet worms is proposed. This approach determines whether a worm incident has occurred by the change of the computers' connection degree. The approach is proved to be effective on early detection of unknown worms by experiments.

关键词： Internet computer worms computer networks computer security information security National security Economics Web server Intrusion detection computer hacking

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Modeling the intrusion by using capability of attackers

Modeling the intrusion by using capability of attackers

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Liang-Min Wang Jian-Ming Zhang Jian-Feng Ma The Department of Computer Science Jiangsu University Zhenjiang China The Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University China

Modeling the intrusion is an open problem which is necessary to be solved in intrusion tolerance system. A model of state transition and its constructing algorithm is presented which is described with the capability of attackers. With the attention on the influence upon system, the intrusion is described by the capability of the attacker in this model. And the intrusion model is formalized by the definition of meta-attack. Then an approach to cluster the hyper-alerts into meta-attack using correlation-algorithm is presented. In the end, the method on modeling the intrusion by meta-attack is presented, and the proof of existence and uniqueness of the model constructed by this approach are given.

关键词： Intrusion detection Logic Clustering algorithms Control systems Buffer overflow computer science laboratories computer networks information security computer science education

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A Mathematical Approach to Disaster Recovery Planning

A Mathematical Approach to Disaster Recovery Planning

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Kun Wang Zhonghai Yin Feng Yuan Lihua Zhou Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

关键词： Mathematical model Testing information security information systems Control systems Risk management Technology planning laboratories computer networks computer science education

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Study of Secure Complicated information System Architecture Model

Study of Secure Complicated Information System Architecture ...

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Kun Wang Ruidan Su Zengxin Li Zhen Cai Lihua Zhou Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

Complicated information system (CIS) contains many inhomogeneous applications which require security, interoperability, extensibility. The paper presents a secure CIS architecture model to conduct the construction or reconstruction of CIS. Using layered method, it divides CIS into modules and reduces system complexity. Web service technology is widely adopted in layers to fulfill interoperability and extensibility. It uses encryption support layer, security protection and reliability support layer to guarantee system security and stability in different aspects. It uses system management layer to make CIS administrable. It suits highly security-critical environment such as government and bank. Been properly simplified, it can be applied to relative simple information system too.

关键词： information systems information security Computational Intelligence Society Communication system security National security Electronic government Operating systems Protocols Communication standards computer security

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A Disaster Recovery System Model in an E-government System

A Disaster Recovery System Model in an E-government System

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IEEE International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT)

作者： Kun Wang Lihua Zhou Zhen Cai Zengxin Li Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

We present a Robust Disaster Recovery System Model (RDRSM) for highly security-critical systems to realize continuous service. Through strengthening safe communication ability, RDRSM guarantees secure and reliable command on disaster recovery. It uses selfsupervision function to monitor the integrality and security of system itself. Through GIS, this model makes disaster recovery system easier to use, manage and maintain. RDRSM possesses features of security, robustness and controllability and can be applied to environments such as e-government and bank. This model successfully conducted the construction of an important e-government disaster recovery system, which verified its feasibility and the significance of its components, such as disaster recovery planning, system supervision and robust communication support.

关键词： Electronic government Robustness Communication system security Stability Disaster management computer networks information security Monitoring Geographic information Systems Protection

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