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检索条件"任意字段=2010 3rd IEEE International Conference on Computer Science and Information Technology—ICCSIT 2010"

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An improved mechanism for four-way handshake procedure in ieee802.11i

An improved mechanism for four-way handshake procedure in IE...

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2010 3rd ieee international conference on computer science and information technology, iccsit 2010

作者： Xiao, Xiawen Ding, Jie Zhou, Nanrun Department of Electronic Infonnation Engineering Nanchang University Nanchang 330031 China

ISBN: (纸本)9781424455386

With the development of WLAN (wireless local area network), the security problems become more apparent than before. 802.11i protocol enhances the security performance such as encryption and authentication, however, the four-way handshake procedure aiming to produce the PTK (pairwise transient key) is subjected to the DoS attack and the DoS flooding attack, which may result in memory exhaustion. Cookie mechanism is reviewed for its robustness against the DoS attack and the DoS flooding attack. After analyzing the Cookie mechanism, some weaknesses such as the exposure of the PTK are found. Thus, an improved mechanism is proposed, without exposing the PTK in the wireless space directly, this new mechanism performs great to avoid the DOS attack and to decrease the transmission load. © 2010 ieee.

关键词： Denial-of-service attack

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The Risk Control Model in Corporate Governance - Based on Conditional Random Fields Based Security Risk Evaluation for IT Systems

The Risk Control Model in Corporate Governance - Based on Co...

引用

3rd ieee international conference on computer science and information technology (iccsit)

作者： Tang Jing Shen Leping South China Univ Technol Sch Business Adm Guangzhou 510640 Guangdong Peoples R China Univ Foreign Studies Res Ctr Int Trade & Econ Guangzhou 510006 Guangdong Peoples R China

ISBN: (纸本)9781424455379

Reducing the risk of IT governance often get a lot of attention. Journal and newspaper articles abound, and professional books have been written on the subject. this article presents a Conditional Random Fields (CRF) based risk assessment model. We first analyzed and evaluated the existing information security risk assessment methodology, and described control processes of information systems and risk levels summarily. After that, CRF model was introduced into information system security assessment, which can improve model-based information security risk assessment method (CORAS). this article taking web-based electronic banking system for an example, we quantify the risk indicators of a given task sequence, by formal description and modeling of system flow and risk levels. The experiments demonstrate the feasibility of CRF model, which laid the foundation for information system risk assessment and IT governance security.

关键词： IT governance IT governance risk assessment information management system Conditional Random Fields Model

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Research on the Key technology of Reconstructing Attack Scenario Based on State Machine

Research on the Key Technology of Reconstructing Attack Scen...

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3rd ieee international conference on computer science and information technology (iccsit)

作者： Feng Xuewei Wang Dongxia Ma Guoqing Li Jin Beijing Inst Syst Engineer Beijing 100101 Peoples R China

ISBN: (纸本)9781424455379

An attack activity to cyberspace will cause the security devices generating huge number of security events, it is unfeasible to analyze these events by the manual way for the security manager. After analyzing the existing algorithms of security events correlation, we propose an attack scenario reconstruction technology based on state machine. The processes of attackers intruding into the cyberspace can be restored and the more comprehensive attack scenario description information will be generated using this technology. This working lets the security manager more comfy. The state machine based attack scenario reconstruction technology processes security events using clustering analysis and causal analysis concurrently, it builds a correlation state machine in memory for every attack scenario tree which is predefined by the security manager, when security events are coming, the current state set of the correlation state machine will process them, if the condition is satisfied, the current states of the state machine will transfer, it corresponds to the developing of the multi-step attack. If one of the leaf nodes of the state machine is in its current state set, an attack scenario description information will be generated and then sent to the security manager. The correlating technology based on state machine is more timely and accurately, and at last, we use the DARP A2000 Intrusion Scenario Specific Data Sets to validate the technology, the experiment results show that it is feasible to analyze security events using the technology we proposed.

关键词： attack scenario reconstruction clustering analysis causal analysis attack scenario tree correlating state machine

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A New System for Hidden Data within Header Space for EXE-File Using Object Oriented Technique

A New System for Hidden Data within Header Space for EXE-Fil...

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3rd ieee international conference on computer science and information technology (iccsit)

作者： AL-Nabhani, Yahya Zaidan, A. A. Zaidan, B. B. Jalab, Hamid A. Alanazi, Hamdan. O. Univ Malaya Fac Comp Sci & Informat Technol Kuala Lumpur 50603 Malaysia

ISBN: (纸本)9781424455379

A Previously traditional methods were sufficient to protect the information, since it is simplicity in the past does not need complicated methods but with the progress of information technology, it become easy to attack systems, and detection of hiding methods became necessary to fmd ways parallel with the differing methods used by hackers, so the embedding methods could be under surveillance from system managers in an organization that requires the high level of security. This fact requires researches on new hiding methods and cover objects which hidden information is embedded in. It is the result from the researches to embed information in executable files, but when will use the executable file for cover they have many challenges must be taken into consideration which is any changes made to the file will be firstly detected by untie viruses;secondly the functionality of the file is not still functioning. In this paper, a new information hiding system is presented. The aim of the proposed system is to hide information (data file) after end of header file within execution file (EXE file) to make sure changes made to the:file will not be detected by universe and the functionality of the exe file is still functioning after hiding process. Meanwhile, since the cover file might be used to identify hiding information, the proposed system considers overcoming this dilemma by using the execution file as a cover file

关键词： information Hiding Portable Executable File Steganography

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Service priority based target tracking framework

Service priority based target tracking framework

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2010 3rd ieee international conference on computer science and information technology, iccsit 2010

作者： Ur Rahman, Akond Ashfaque Naznin, Mahmuda Mollah, Md. Atiqul Islam Department of Computer Science and Engineering Bangladesh University of Engineering and Technology Dhaka Bangladesh

ISBN: (纸本)9781424455386

Multiple targets tracking is one of the challenging applications in a wireless sensor network due to targets' movement in different directions, targets' speed variations and frequent connectivity failures of low powered sensor nodes. If all the low-powered sensor nodes are kept active in tracking multiple targets' coming from different directions of the network, there is high probability of network failure due to the wastage of power. It would be more realistic, if, according to the priority of service, sensor nodes are classified and are kept active. Then, it is possible to reduce energy consumption. In our paper, we propose a distributed tracking framework incorporating sensor network properties which results into a novel service priority based dynamic tracking framework. We simulate our method by a sensor network simulator OMNeT++. We find that our architecture saves energy significantly. © 2010 ieee.

关键词： Network architecture

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Infrared and Visible Images Registration Using BEMD and MI

Infrared and Visible Images Registration Using BEMD and MI

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3rd ieee international conference on computer science and information technology (iccsit)

作者： Zhang, Xiuqiong Men, Tao Liu, Chun Yang, Jian Leshan Normal Univ Coll Comp Sci Lab Intelligent Informat Proc & Applicat Leshan 614000 Peoples R China Leshan Publ Secur Bur Criminal Invest Div Leshan 614000 Peoples R China

ISBN: (纸本)9781424455379

Enhanced vision especially in poor weather conditions can be achieved by image fusion between the infrared and visible images. Image registration is a crucial step in image fusion. In order to register the infrared and visible images captured in poor weather conditions, the registration method combing the Bidimensional Empirical Model Decomposition (BEMD) with mutual information is proposed in this paper. After the infrared and visible images are decomposed into a set of Intrinsic Mode Functions (IMFs) and residue respectively by BEMD, the parameters of affine transform can be obtained through using the maximum mutual information registration between IMFs images. Then, the transform matrix defined by these parameters is used to the source infrared image and the final registered image can be obtained through interpolation and resampling for the transformed image. This method is used to register two video sequences captured in dense fog. Experimental results show that this method gives better performance compared to other two methods.

关键词： image registration Mutual information (MI) bidimensional empirical model decomposition (BEMD) infrared image visible image

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An automated oracle approach to test decision-making structures

An automated oracle approach to test decision-making structu...

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2010 3rd ieee international conference on computer science and information technology, iccsit 2010

作者： Shahamiri, Seyed Reza Wan Kadir, Wan Mohd Nasir Bin Ibrahim, Suhaimi Department of Software Engineering Faculty of Computer Science and Information System Uneversiti Teknologi Malaysia Skudai Malaysia

ISBN: (纸本)9781424455386

Decision-making structures are important building blocks in most of the software;however, it may be difficult to verify them because there are various input conditions and several paths causing them to behave differently. Test oracles are reliable sources of how the software must operate. The aim of the present paper is to study the applications of Artificial Neural Networks as an automated oracle to test decision-making structures. First, the decision rules were modeled by the neural network using a training dataset generated based on the software specifications and domain expert knowledge. Next, after the neural network was applied to test a subject-registration application, the proposed approach was evaluated using mutation testing. The accuracy of the resulted oracle is discussed as well. © 2010 ieee.

关键词： Neural networks

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RETRACTED ARTICLE: Dimension of two-point codes on the quotient of Hermitian curves

RETRACTED ARTICLE: Dimension of two-point codes on the quoti...

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作者： Chen, Qi Pei, Dingyi Li, Chao School of Mathematics and Information Sciences Guangzhou University Guangzhou 510006 China Department of Mathematics and System Science National University of Defense Technology Changsha 410073 China

ISBN: (纸本)9781424455386

关键词： computer science

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Improved LSB matching steganography resisting histogram attacks

Improved LSB matching steganography resisting histogram atta...

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2010 3rd ieee international conference on computer science and information technology, iccsit 2010

作者： Xi, Ling Ping, Xijian Zhang, Tao Zhengzhou Information Science and Technology Institute Zhengzhou China

ISBN: (纸本)9781424455386

This paper presents an improved LSD matching steganography, which complementarily modifies the pairs of pixels with adjacent intensity to embed secrete message. In LSD matching steganography, when adding or subtracting one from the cover image pixel, two adjacent bins of the histogram will be a1tered-the bin value of the modified pixel's intensity increased by one, and one of its adjacent bin's value decreased by one. Dased on the alteration of histogram caused by LSD matching, the improved algorithm embeds two bits in a pair of pixels with adjacent intensity one time so as to minimize the alteration of histogram. Compared to the original LSD matching, the new one preserves the first order statistical property of cover image extremely. Experimental results show the proposed algorithm obviously outperforms LSD matching algorithm in the aspect of resisting first order statistical attacks based on histogram. © 2010 ieee.

关键词： Steganography

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Microcontroller-based single-phase automatic voltage regulator

Microcontroller-based single-phase automatic voltage regulat...

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international conference on computer science and information technology (CSIT)

作者： Nang, Kaythi Hlaing Lwin, Lwin Oo Hardware Technology Department Computer University PangLong Myanmar Hardware Technology Department Computer University Larshio Myanmar

ISBN: (纸本)9781424455386

This paper proposes the design and implementation of a microcontroller- based single-phase automatic voltage regulator (AVR). The basic building blocks for this design include a PIC 16f 628 microcontroller, a triac, a step-up transformer, a zero crossing circuitry and a load voltage sensing circuitry. This design is based on the principle of phase control of ac voltage using a triac. The trigger pulse for the triac is delayed by the microcontroller to provide the desired regulator terminal voltage. This voltage is always sensed and fed back to the microcontroller via a measuring unit to get a continuous control system. One of the intensions to develop this AVR is to use it in domestic heating and lighting controls. It can also be used as an adjustable voltage source by adjusting a variable resistor in the voltage sensing circuitry. It is also intended to introduce a compact AVR and to demonstrate the usefulness of the PIC microcontroller in power control field. © 2010 ieee.

关键词： Voltage regulators

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