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A dynamic method for handling the inference problem in multilevel secure databases

A dynamic method for handling the inference problem in multi...

引用

international conference on information technology: coding and computing (itcc)

作者： X. Chen R. Wei Department of Computer Science Lakehead University Thunder Bay ONT Canada

The inference problem exits when users can infer sensitive data classified at higher security levels from the knowledge of data at their level by performing inference. Inference problems greatly compromise database security, especially in multilevel secure (MLS) databases where both users and data are classified into different security levels. This paper presents an approach of dynamic control over the inference problem after all inference channels have been identified in a multilevel database. A set of key schemes are used for this purpose. We prove that these schemes are more efficient, in both space and time complexity, than previously proposed approaches.

关键词： Databases Data security information security Query processing Computer science Lakes Multilevel systems Computer security Delay Process control

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A conceptual model for distributed aspect-oriented software architectures

A conceptual model for distributed aspect-oriented software ...

引用

international conference on information technology: coding and computing (itcc)

作者： N. Ali I. Ramos J.A. Carsi Department of Information Systems and Computation Valencia University of Technology Valencia Spain

Distribution has become a fundamental requirement for information systems and not an auxiliary. We believe it is important to consider distribution from early stages of the life cycle of software development and deal with distribution at a high abstraction level. This paper, presents a conceptual model for specifying software architectures of distributed information systems. The conceptual model is defined by combining the aspect-oriented software development (AOSD) and the component-based software development (CBSD). The distribution conceptual model is explained by presenting its AOSD perspective and the CBSD perspective. The AOSD perspective of the conceptual model describes the mobile and replication behaviour of an architectural element by introducing a distribution aspect and a replication aspect. The architectural perspective (CBSD perspective) of the distribution model allows specification of the distributed communication of the architectural elements of a software architecture.

关键词： Computer architecture Programming Object oriented modeling Software architecture information systems Application software Software systems Connectors Technological innovation Distributed information systems

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Security design and evaluation in a VoIP secure infrastracture: a policy based approach

Security design and evaluation in a VoIP secure infrastractu...

引用

international conference on information technology: coding and computing (itcc)

作者： V. Casola M. Rak A. Mazzeo N. Mazzoccca Dipartimento di Ingegneria dellInformazione Seconda Universitá di Napoli Aversa Italy Dipartimento di informatica e Sistemistica Universitá degli Studi di Napoli Federico II Napoli Italy

This paper aims at defining security levels of a voice over IP infrastructure during its design phase. The proposed technique uses security policies to express the security statements that could be adopted, and the policy evaluation is based on security metrics to compare policies. The technique first step consists of policy structure definition; the proposed approach is applied on the target VoIP infrastructure. In the second step of the technique, the policy is used to define reference levels against which a security designer can evaluate his design choice or compare the adopted security solution with existing ones.

关键词： Internet telephony information security Access control Access protocols Authentication Art Design methodology information technology

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Pareto-optimal hardware for substitution boxes

Pareto-optimal hardware for substitution boxes

引用

international conference on information technology: coding and computing (itcc)

作者： N. Nedjah L. de Macedo Mourelle Department of Electronics Engineering and Telecommunications State University of Rio de Janeiro Brazil Department of Systems Engineering and Computation State University of Rio de Janeiro Brazil

In this paper, we propose a methodology based on genetic programming to automatically generate hardware designs of substitution boxes necessary for many cryptosystems such as DES encryption system. We aim at evolving minimal hardware specifications, which minimize both space (i.e. required gate number), response time (i.e. encryption and decryption time) and dissipated power. We compare our results against existing and well-known designs, which were produced by human designers using conventional methods.

关键词： Hardware Cryptography Genetic engineering Design engineering Delay Humans Resists Systems engineering and theory Telecommunication computing Genetic programming

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A survey on data compression in wireless sensor networks

A survey on data compression in wireless sensor networks

引用

international conference on information technology: coding and computing (itcc)

作者： N. Kimura S. Latifi Electrical and Computer Engineering University of Nevada Las Vegas USA

Wireless sensor networks (WSNs) are resource constraint: limited power supply, bandwidth for communication, processing speed, and memory space. One possible way of achieve maximum utilization of those resource is applying data compression on sensor data. Usually, processing data consumes much less power than transmitting data in wireless medium, so it is effective to apply data compression before transmitting data for reducing total power consumption by a sensor node. However, existing compression algorithms are not applicable for sensor nodes because of their limited resource. Therefore, some of compression algorithms, which have been specifically designed for WSNs, are presented in this paper: coding by ordering, pipelined in-network compression, low-complexity video compression, and distributed compression.

关键词： Data compression Intelligent networks Wireless sensor networks Peer to peer computing Power supplies Bandwidth Monitoring Energy consumption Compression algorithms Computer networks

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Comparison of Web services technologies from a developer's perspective

Comparison of Web services technologies from a developer's p...

引用

international conference on information technology: coding and computing (itcc)

作者： S.P. Ahuja R. Clark Department of Computer and Information Sciences University of North Florida Jacksonville FL USA

Two main technologies that stand out for the implementation of enterprise applications and Web services are Sun Microsystems' Java 2 Enterprise Edition (J2EE) and Microsoft's .NET framework. These two are competing to become the platform of choice for enterprise application and Web services developers. Each platform provides specific development tools and APIs to assist developers. The purpose of this research is to provide an unbiased comparison of the two platforms based on their features and services offered from the viewpoint of developers in the context of building an enterprise or Web application from design right through to deployment.

关键词： Web services Java Application software Software maintenance Sun Containers Software quality Programming profession Context-aware services Buildings

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Verifying physical presence of neighbors against replay-based attacks in wireless ad hoc networks

Verifying physical presence of neighbors against replay-base...

引用

international conference on information technology: coding and computing (itcc)

作者： T. Korkmaz Department of Computer Science University of Technology San Antonio USA

Verifying physical presence of a neighbor in wireless ad hoc networks is one of the key components in developing protocols resilient to replay-based attacks. For this, we first consider RTT-based and power-based approaches. We then couple them to design an effective neighbor verification protocol (NVP). In theory, we always see some room for replay-based attacks. However, our proposed protocol significantly limits the effectiveness of replay-based attacks by restricting the range where they might be launched and thus makes them practically impossible.

关键词： Intelligent networks Ad hoc networks Routing protocols Mobile ad hoc networks Wireless application protocol Cryptography Costs Energy consumption Computer science Wireless networks

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Integration of digital rights management into learning content management system

Integration of digital rights management into learning conte...

引用

international conference on information technology: coding and computing (itcc)

作者： Zongkai Yang Qingtang Liu Kun Yan Wanting Deng Jing Jin Huazhong University of Science and Technology Wuhan China Central China Normal University Wuhan China

ISBN: (纸本)0769523153

With the rapid increase of learning resources, the contradiction between learning content intelligent properties and its share and reuse becomes an outstanding event. In order to solve the problem, the authors probed into a way that is to integrate the DRM technologies and learning technology standards into the development of learning content management system. The authors also designed a novel online management system for broadcasting environments of virtual classroom or courseware on demand based on a browser/server framework, which carries out learning content management for reuse, share, interoperation and security. Particular emphases was placed on the strategies of integration of digital rights management and flexible commercial model by license services into applications, management, exchange and trade of Web-based learning content and try to solve the problem between reuse and protection.

关键词： Content management Licenses technology management Packaging Resource management Protection Courseware Databases Indexing Cryptography

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Mobile Web services discovery and invocation through auto-generation of abstract multimodal interface

Mobile Web services discovery and invocation through auto-ge...

引用

international conference on information technology: coding and computing (itcc)

作者： R. Steele K. Khankan T. Dillon University of Technology Sydney Australia

With the advancement in wireless technologies in general and mobile devices capabilities in particular, ubiquitous access of mobile Web services continues to be in the focal point of research. This paper presents a novel architecture for discovery and invocation of mobile Web services through automatically generated abstract multimodal user interface for these services. A prototype has been developed to auto-generate user interface based on XForms and VoiceXml from a WDSL file. In this proposed architecture, the discovered Web services are invoked dynamically with a transparent mechanism. Moreover, the proposed architecture is a component-based architecture that provides its core functionality as Web services.

关键词： Web services Service oriented architecture User interfaces Personal digital assistants Prototypes Productivity Airports Australia Mobile handsets Displays

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An image sensor node for wireless sensor networks

An image sensor node for wireless sensor networks

引用

international conference on information technology: coding and computing (itcc)

作者： Zhi-Yan Cao Zheng-Zhou Ji Ming-Zeng Hu School of Computer Science and Technology Harbin Institute of Technology Harbin China

ISBN: (纸本)0769523153

Visual information is the most intuitive information perceived by human. Image sensors are able to provide the visual information for recognition, monitoring and surveillance. Networks of visual sensors are the solution of choice for a number of societal, research, and educational applications. Architectural challenges are posed for designers of image sensor nodes such as computational power, energy consumption, energy sources, communication channels, and sensing capabilities. We discuss the characteristics and requirements for an image sensor node. An image sensor node is designed and implemented for wireless sensor network. It includes an embedded processor, memory, a CMOS image sensor, image acquisition unit, RF module and power unit etc. Power-efficient hardware management strategies are proposed for the image sensor node. Image compression problem of image sensor nodes is discussed in detail.

关键词： Image sensors Wireless sensor networks Humans Image recognition Monitoring Surveillance Sensor phenomena and characterization Energy consumption Communication channels CMOS image sensors

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