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Authentication in Reprogramming of Sensor networks for Mote Class Adversaries

Authentication in Reprogramming of Sensor Networks for Mote ...

引用

International Symposium on Parallel and Distributed Processing (IPDPS)

作者： Limin Wang Sandeep S. Kulkarni Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI USA

Reprogramming is an essential service for wireless sensor networks. Authenticating reprogramming process is important as sensors need to verify that the code image is truly from a trusted source. There are two ways to achieve authentication: public key based and symmetric key based. Although previous work has shown that public key authentication is feasible on sensor nodes if used sparingly, it is still quite expensive compared to symmetric key based approach. In this paper, we propose a symmetric key based protocol for authenticating reprogramming process. Our protocol is based on the secret instantiation algorithm from, which requires only O(log n) keys to be maintained at each sensor. We integrate this algorithm with the existing reprogramming protocol. Through simulation, we show that it is able to authenticate reprogramming process at very low communication cost, and has very short delay.

关键词： Authentication Protocols Base stations Wireless sensor networks Public key Image sensors Costs Delay Testing Elliptic curve cryptography

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Thermally Actuated Multiband Voltage Controlled Oscillator Design with MEMS Switch

Thermally Actuated Multiband Voltage Controlled Oscillator D...

引用

MILCOM, Military Communications Conference

作者： Shumin Zhang Wansheng Su Mona E. Zaghloul Hughes Network Systems LLC Germantown MD USA Department of Electrical and Computer Engineering George Washington University

Wireless communication systems often require multiband receivers. The multiband operation is controlled by the voltage controlled oscillator (VCO). MOSFET switches are commonly used in the switched capacitor array in multiband VCOs, but the noisy MOSFET switches have a great impact on the phase noise performance of the system. This paper presents a thermally actuated MEMS switch used in a differential Colpitts VCO. The phase noise performance is 21 dB better than MOSFET switched VCO circuit.

关键词： Voltage-controlled oscillators Microswitches MOSFET circuits Communication switching Phase noise Switches Phased arrays Wireless communication Voltage control Communication system control

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Enhancing security performance with parallel crypto operations in SSL bulk data transfer phase

Enhancing security performance with parallel crypto operatio...

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IEEE International Conference on Telecommunications and Malaysia Communications (ICT-MICC)

作者： Hashem Mohammed Alaidaros Mohd Fadlee A. Rasid Mohamed Othman Raja Syamsul Azmir Raja Abdullah Department of Computer and Communication Systems Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Communication Technology and Network Faculty of Computer Science and Information Technology Universiti Putra Malaysia Malaysia

Information security, including integrity and privacy, is an important concern among today's computer users due to increased connectivity. Despite a number of secure algorithms that have been proposed, the trade-offs made between security and performance demands further research toward improvement. In bulk data transfer, especially in large messages, the secured processing time takes much longer than non-secured processes. This is due to crypto operations, which include symmetric encryption operations and hashing functions. In the current bulk data transfer phase in secure socket layer (SSL), the server or the client firstly calculates the message authentication code (MAC) of the data using keyed-hash message authentication code (HMAC) operation, and then performs the symmetric encryption on the data together with the MAC. This paper proposes a new algorithm which provides a significant performance gain in bulk data transfer without compromising the security. The proposed algorithm performs the encryption of the data and the calculation of the MAC in parallel. The server calculates the MAC of the data at the same time as the encryption process of the data. Once the calculation of the MAC is completed, only then the MAC will be encrypted. The algorithm was simulated in two processors with one processor performing the MAC calculation and the other on encrypting the data, simultaneously. The communication between the two processors was done via message passing interface (MPI). Based on the performance simulations, the new parallel algorithm gained speedup of 1.74 with 85% efficiency over the current (sequential) algorithm.

关键词： Data security Cryptography Information security Communication system security Concurrent computing Message authentication Parallel processing computer security computer networks Data engineering

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Middleware based inpatient healthcare information system

Middleware based inpatient healthcare information system

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7th IEEE International Conference on Bioinformatics and Bioengineering, BIBE

作者： Hsieh, S.H. Hsieh, S.L. Weng, Y.C. Yang, T.H. Lai, Feipei Cheng, P.H. Ping, X.O. Jan, M.Y. Lin, J.C. Peng, C.H. Huang, K.H. Ko, L.F. Chen, C.H. Hsu, K.P. Information Systems Office National Taiwan University Hospital Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan Network and Computer Centre National Chiao Tung University Hsin Chu Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taiwan Department of Information Management National Taiwan University Taipei Taiwan

ISBN: (纸本)1424415098

The paper presents a multi-tier, integrated, distributed, Inpatient Healthcare Information System based on Service Oriented Architecture (SOA) .NET environment in National Taiwan University Hospital (NTUH). The architecture and outcomes of the newly developed Inpatient Information System (IIS) platform are discussed in details. We also present mechanisms of integration as well as interoperability among the components and multi-database in IIS via Health Level Seven (HL7) Middleware layer. The preliminary performance of the current operating IIS is evaluated and analyzed to verify the efficiency and effectiveness of the architecture we designed. ©2007 IEEE.

关键词： Information systems

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Image authentication for low complexity applications

Image authentication for low complexity applications

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2007 IEEE Region 5 Technical Conference, TPS

作者： Adi, W. Dawood, A. Mabrouk, A. Musa, Sarhan M. Institute of Computer and Communication Network Engineering Technical University of Braunschweig Hans-Sommer-Straße 66 38106 Braunschweig Germany Communication Engineering Department Etisalat University College P. O. Box 573 Sharjah United Arab Emirates Lufthansa Systems AS D-65451 Kelsterbach Germany Engineering Technology Department Prairie View AandM University Prairie View TX 77446 United States

ISBN: (纸本)1424412803

Hand-held mobile devices are having a wide spectrum of applications. Such devices which incorporate sending images of relevant legal significance require certifying the source of the image. Hand-held devices inherently have very limited energy resources. The aim of this work is to propose low energy authentication mechanism even when using public-key cryptography. We proposed a technique for fast public-key image authentication using fuzzy-computations for the El-Gamal authentication technique. The fuzzy operations are embedded in the authentication computations to sign images without performing high complexity operations such as exponentiations. The result is low complexity and low energy processing on the mobile device site. The technique is rather general and can be deployed similarly for other similar environments. The fact that power consumption/speed is becoming an essential issue for hand-held devices make this technique very promising for future applications. © 2007 IEEE.

关键词： Authentication

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Vehicle identification using wireless sensor networks

Vehicle identification using wireless sensor networks

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IEEE Southeastcon

作者： Seung S. Yang Yoon G. Kim Hongsik Choi Department of Computer Information Systems Virginia State University USA Department of Eng. and Tech. Computer Engineering Virginia State University USA Department of Computer Science Network Research Laboratory Virginia Commonwealth University USA

We studied the possibility of using wireless sensor networks for vehicle identification. It is interesting because it is not only challenging but also practical. It is challenging to develop algorithms and/or protocols for sensor nodes to execute since each sensor node has limited computation and communication capabilities, and these limitations prohibit the use of algorithms and/or protocols developed for conventional computer and networks. It is practical since each sensor is dispensable and easily deployable, yet it can do meaningful works when it is collaborated as a networked cluster. Our goal is to identify vehicles in real time using acoustic signal sensors and wireless networks. Our contribution in this paper is two fold. First, we develop a simple vehicle sound identification algorithm enough to be implemented on capacity limited sensor nodes. Second, we propose architecture and protocols of wireless sensor networks for vehicle identification using this developed sound classification algorithm. Our preliminary results show the proposed architecture and protocols are promising.

关键词： Vehicles Wireless sensor networks Acoustic sensors computer networks Clustering algorithms Collaborative work Signal processing Capacitive sensors Wireless application protocol Classification algorithms

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Accurate ICMP TraceBack Model under DoS/DDoS Attack

Accurate ICMP TraceBack Model under DoS/DDoS Attack

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International Conference on Advanced Computing and Communications (ADCOM)

作者： Alireza Izaddoost Mohamed Othman Mohd Fadlee A. Rasid Department of Communication Technology and Network Universiti Putra Malaysia Malaysia Department of Computer and Communication Systems Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

One of the most significant current groups of security endangerments in the Internet is DoS/DDoS attacks. The goal of these kinds of attacks is to completely engage available resources so that legitimate users are not able to access a service. Some traceback approach has been proposed to traceback source of attack. One of these methods is Intention-driven iTrace which is the working base of the ICMP traceback. By this method, it will be possible to increase effective ICMP traceback messages which can provide useful information to the victim in tracing source of attack. Reconstructed path to the source of attack by the victim can be done accurately when more effective ICMP traceback messages are generated in critical routers. In this paper, we proposed a model considering incoming packets routed to the victim and by modifying intention-driven iTrace model, we can generate more effective ICMP traceback packets to locate the source of attack more accurately.

关键词： computer crime Web and internet services IP networks Telecommunication traffic computer networks Routing Communications technology systems engineering and theory Communication system security computer security

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i2MAP: an incremental and iterative modeling and analysis process 07

i2MAP: an incremental and iterative modeling and analysis pr...

引用

Proceedings of the 10th international conference on Model Driven engineering Languages and systems

作者： Sascha Konrad Heather J. Goldsby Betty H. C. Cheng Siemens Corporate Research Inc. Princeton NJ Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing Michigan

ISBN: (纸本)9783540752080

Detecting errors early within the development process for an embedded system assists a developer in avoiding excessive error correction costs and minimizing catastrophic losses resulting from failures in deployed systems. Towards that end, this paper presents i2MAP, an iterative and incremental goal-driven process for constructing an analysis-level UML model of an embedded system. The UML model is formally analyzed for adherence to the behavioral properties captured in a companion goal model. The process uses goal modeling to capture the requirements of the system, and uses UML to capture analysis-level structural and behavioral information. Both types of i2MAP models can be used to drive a rigorous approach to model-driven development of embedded systems. In this paper, we illustrate the i2MAP process and the accompanying tool suite in the development of an embedded system model for an adaptive light control system.

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Design and Enhance a Dynamic Healthcare Portal Site

Design and Enhance a Dynamic Healthcare Portal Site

引用

Web Intelligence and Intelligent Agent Technology Workshops (WI-IAT)

作者： Yung-Ching Weng Sheau-Ling Hsieh Sung-Huai Hsieh Feipei Lai Department of Computer Science and Information Engineering National Taiwan University Taiwan Information Systems Office National Taiwan University Hospital Taiwan Network and Computer Center National Chiao Tung University Hsinchu Taiwan

National Taiwan University Hospital (NTUH) is an academic hospital having over hundred years' history and large scale. There are existing problems in the NTUH portal site. It contains multi-system entrances and display, maintenance of numerous function linkages. In here, we design a new portal site to solve these problems. The single sign on service (SSOS) solves the multi-system entrance problem. For the function linkage problem, we design dynamic, hierarchical drop-down navigation menus to enlarge the browsing capacity for covering over 250 function links and two bulletins in one page. The XML formatted configuration files are designed to dynamically establish function linkages. The approach makes the linkage management easier. Moreover, we maintain configuration parameters, i.e., access control capabilities, linkage modes and multi-server redirections, as well as target control, in configuration files. All these features enhance NTUH portal site administration flexible and usage intuitive. In addition, the future works have been addressed clearly.

关键词： Medical services Portals Couplings Hospitals History Large-scale systems Displays Navigation XML Access control

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Design and Evaluation of a Grid Computing Based Architecture for Integrating Heterogeneous IDSs

Design and Evaluation of a Grid Computing Based Architecture...

引用

IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference

作者： Paulo F. Silva Carlos B. Westphall Carla M. Westphall Marcos Dias de Assuncao Network and Management Laboratory Post-Graduate Program in Computer Science Federal University of Santa Catarina Florianopolis Brazil Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia

Intrusion detection systems (IDSs) have been substantially improved in recent past. However, network attacks have become more sophisticated and increasingly complex: many of current attacks are coordinated and originated in multiple networks. To detect these attacks, IDSs need to obtain information on network events from multiple networks or administrative domains. This work demonstrates that a Distributed IDS (DIDS) can be composed of existing IDSs, improving the detection of misuses in a multiple network environment. We use a grid middleware for creating a service-based intrusion detection grid. We demonstrate through experimental results that the proposed DIDS allows the integration of heterogeneous existing IDSs and improves the detection of attacks by exploring the synergy between existing IDSs.

关键词： Grid computing computer architecture Intrusion detection Resource management Laboratories computer science Electronic mail Middleware computer network management engineering management

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