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

作者： Ji, Shirui Pei, Qingqi Zeng, Yong Yang, Chao Bu, Shu-Po State Key Laboratory of Integrated Service Networks Xidian University Xi'an China Key Lab. of Computer Networks and Information Security of Ministry of Education China Department of Electronic Engineering Suzhou Institute of Industrial Technology Suzhou 215104 China

ISBN: (纸本)9780769545844

Security protocols for wireless sensor network are designed to provide a variety of security services to secure communications in an unsafe network. It is demanded to verify whether an implementation of a security protocol indeed perform as described in the protocol. In practice, conformance testing is commonly employed to test whether an implementation is conformance with the protocol specification. However, existing conformance testing cannot test and assess the security of the implementation of a security protocol. Therefore, randomness test is added to conformance test, makes it possible to test security functions. In this paper, we seek to overcome the limitation and meet the test requirement. We integrate randomness test with conformance testing to makes it possible to test security functions. One part of SPINS protocol is chosen to illustrate the approach. The experimental results demonstrate that the approach can be used for test security functions of WSN protocols. © 2011 IEEE.

关键词： Wireless sensor networks

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An identity-based secure routing protocol in WSNs

An identity-based secure routing protocol in WSNs

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

作者： Li, Weichang Li, Hongning Xie, Min Bu, Shupo Key Lab. of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an China Department of Electronic Engineering Suzhou Institute of Industrial Technology Suzhou China

ISBN: (纸本)9780769545844

It has been proved that Asymmetric cryptography can be used in Wireless Sensor networks (WSNs). In this paper, we propose a secure Identity-based routing protocol, which can ensure that the nodes in routing discovery process are trusted nodes. Digital signatures based on ECC is used in our protocol, therefore, our protocol has many virtues, such as less energy cost, more rapid calculation, shorter storage keys, etc. In the routing discovery process our protocol can also resist multiple attacks. Simultaneously, the protocol sets an energy threshold for the nodes in the network. The nodes whose energy remained less than the threshold do not participate in the selection of the routing nodes. This can avoid the energy exhaustion in the process of data transmission so as to influent the operation of the network. © 2011 IEEE.

关键词： Routing protocols

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Investigating and exploiting the bias of the weighted hypervolume to articulate user preferences

Investigating and exploiting the bias of the weighted hyperv...

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11th Annual Genetic and Evolutionary Computation Conference, GECCO-2009

作者： Auger, Anne Bader, Johannes Brockhoff, Dimo Zitzler, Eckart TAO Team INRIA Saclay LRI Paris Sud University 91405 Orsay Cedex France Computer Engineering and Networks Lab. ETH Zurich 8092 Zurich Switzerland

ISBN: (纸本)9781605583259

Optimizing the hypervolume indicator within evolutionary multiobjective optimizers has become popular in the last years. Recently, the indicator has been generalized to the weighted case to incorporate various user preferences into hypervolume-based search algorithms. There are two main open questions in this context: (i) how does the specified weight influence the distribution of a fixed number of points that maximize the weighted hypervolume indicator? (ii) how can the user articulate her preferences easily without specifying a certain weight distribution function? In this paper, we tackle both questions. First, we theoretically investigate optimal distributions of μ points that maximize the weighted hypervolume indicator. Second, based on the obtained theoretical results, we propose a new approach to articulate user preferences within biobjective hypervolume-based optimization in terms of specifying a desired density of points on a predefined (imaginary) Pareto front. Within this approach, a new exact algorithm based on dynamic programming is proposed which selects the set of μ points that maximizes the (weighted) hypervolume indicator. Experiments on various test functions show the usefulness of this new preference articulation approach and the agreement between theory and practice. Copyright 2009 ACM.

关键词： Distribution functions

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A signal processing view on packet sampling and anomaly detection

A signal processing view on packet sampling and anomaly dete...

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IEEE INFOCOM 2010

作者： Brauckhoff, Daniela Salamatian, Kave May, Martin Computer Engineering and Networks Laboratory ETH Zurich Zurich Switzerland Computing Department Lancaster University Lancaster United Kingdom Paris Research Lab. Thomson Paris France

ISBN: (纸本)9781424458363

Anomaly detection methods typically operate on preprocessed traffic traces. Firstly, most traffic capturing devices today employ random packet sampling, where each packet is selected with a certain probability, to cope with increasing link speeds. Secondly, temporal aggregation, where all packets in a measurement interval are represented by their temporal mean, is applied to transform the traffic trace to the observation timescale of interest for anomaly detection. These preprocessing steps affect the temporal correlation structure of traffic that is used by anomaly detection methods such as Kalman filtering or PCA, and have thus an impact on anomaly detection performance. Prior work has analyzed how packet sampling degrades the accuracy of anomaly detection methods;however, neither theoretical explanations nor solutions to the sampling problem have been provided. This paper makes the following key contributions: (i) It provides a thorough analysis and quantification of how random packet sampling and temporal aggregation modify the signal properties by introducing noise, distortion and aliasing. (ii) We show that aliasing introduced by the aggregation step has the largest impact on the correlation structure. (iii) We further propose to replace the aggregation step with a specifically designed low-pass filter that reduces the aliasing effect. (iv) Finally, we show that with our solution applied, the performance of anomaly detection systems can be considerably improved in the presence of packet sampling. ©2010 IEEE.

关键词： Low pass filters

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On the performance of spatial multiplexing in MIMO-WCDMA networks with Principal Component Analysis at the reception 9

On the performance of spatial multiplexing in MIMO-WCDMA net...

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9th European Conference on Antennas and Propagation, EuCAP 2015

作者： Gkonis, Panagiotis K. Kapsalis, Andrew P. Zekios, Constantinos L. Kaklamani, Dimitra I. Venieris, Iakovos S. Chrysomalis, Michael T. Kyriakou, George A. National Technical University of Athens School of Electrical and Computer Engineering Intelligent Communications and Broadband Networks Laboratory 9 Heroon Polytechneioy str Zografou Athens Greece Democritus University of Thrace Department of Electrical and Computer Engineering Microwaves Lab. Xanthi Greece

ISBN: (纸本)9788890701856

The goal of the study presented in this work is to evaluate the performance of MIMO-WCDMA networks in spatial multiplexing transmission mode. In this context, different bit streams are transmitted from each transmit antenna, in a wireless environment with multipath propagation. Due to the inherent complexity of the network orientation (increased number of active users, multipath components, and transmitted bit streams) a simulation platform has been developed executing independent Monte Carlo (MC) simulations in parallel. Moreover, a proposed transmission algorithm is evaluated as well, which is based on Principal Component Analysis (PCA) at the reception. As results indicate, for a 4×2 MIMO orientation (four transmit antennas and two receive antennas) in a multipath propagation environment with 6 multipath components, the selection of the first 5 eigenvectors (i.e. eigenvectors that correspond to the first 5 maximum eigenvalues) can reconstruct the received signal introducing minimum error. © 2015 EurAAP.

关键词： Principal component analysis

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REGULAR STATE MACHINES

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Parallel Algorithms and Applications 2000年第3-4期15卷 265-300页

作者： Lothar Thiele - thiele@tik.ee.ethz.ch[a] Jrgen Teich - teich@date.upb.de Supported in part under grant DFG TE163/5-1[b] Karsten Strehl - strehl@tik.ee.ethz.ch[a] [a] Computer Engineering and Networks Lab TIK Swiss Federal Institute of Technology ETH Zurich Switzerland [b] Computer Engineering Lab DA TE University of Paderborn Paderborn Germany

In this paper, we introduce a model called regular state machines (RSMs) that characterizes a class of state transition systems with regular transition behavior. It turns out that many process graph models such as synchronous dataflow graphs and Petri nets have a state transition system that may be described and analyzed in the RSM *** particular, the proposed approach unifies methods known for the above-mentioned subclasses and yields new results concerning boundedness, deadlocks, scheduling, and formal verification.

关键词： State transition system Model of computation Infinite state Scheduling Formal verification Petri net F.l.l. Models of Computation D.2.2. Design Tools and Techniques

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Poster abstract: An automated real-time and affordable airborne pollen sensing system 18

Poster abstract: An automated real-time and affordable airbo...

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18th ACM/IEEE International Conference on Information Processing in Sensor networks, IPSN 2019

作者： Cao, Nam Saukh, Olga Thiele, Lothar Institute of Technical Informatics Graz University of Technology Austria Institute of Technical Informatics TU Graz / CSH Vienna Austria Computer Engineering and Networks Lab ETH Zurich Switzerland

ISBN: (纸本)9781450362849

In this paper, we present the design of our prototype of an automated real-time and affordable pollen sensing system. The design consists of three main subsystems: (1) a trap with automatic filtering, (2) a particle concentration system, and (3) a digital microscope with autofocus. The prototype shows effective particle gathering, filtering and concentration in a tiny sized area. As a result, we reduce particle loss and improve image quality taken by the optical system when searching and autofocusing on pollen grains. Our first prototype collects raw time-stamped data and transmits these to the backend server where we plan to run the detection and classification algorithms to extract accurate pollen counts from microscopic images. The key advantage of processing images at the backend is that we let the experts undertake corrective actions and help the system learn to detect and classify pollen using state-of-the-art interactive imitation learning algorithms. The final model can then run locally on embedded hardware. © 2019 Copyright held by the owner/author(s).

关键词： Image enhancement

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Interval diagram techniques for symbolic model checking of Petri nets 99

Interval diagram techniques for symbolic model checking of P...

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Proceedings of the conference on Design, automation and test in Europe

作者： Karsten Strehl Lothar Thiele Computer Engineering and Networks Lab Swiss Federal Institute of Technology Switzerland

No abstract available.

ISBN: (纸本)9781581131215

No abstract available.

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Automatic configuration of controlled interference experiments in sensornet testbeds 14

Automatic configuration of controlled interference experimen...

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Proceedings of the 12th ACM Conference on Embedded Network Sensor Systems

作者： Felix Jonathan Oppermann Carlo Alberto Boano Marco Zimmerling Kay Römer Graz University of Technology Computer Engineering and Networks Lab ETH Zurich

ISBN: (纸本)9781450331432

Experiments under controlled radio interference are crucial to assess the robustness of low-power wireless protocols. While tools such as Jamlab augment existing sensornet testbeds with realistic interference, it remains an error-prone and time-consuming task to manually select the set of nodes acting as jammers and their individual transmit powers. We present an automated configuration approach based on simulated annealing to overcome this problem. A preliminary evaluation based on two testbeds shows that our approach can find near-optimal solutions within at most a few hours. We believe our approach can facilitate the widespread adoption of controlled interference experiments by the sensornet community.

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A novel biometric-based authentication scheme with privacy protection

A novel biometric-based authentication scheme with privacy p...

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5th International Conference on Information Assurance and Security, IAS 2009

作者： Huixian, Li Liaojun, Pang School of Computer Science and Engineering Northwestern Polytechnical University Xi'an China Ministry of Education Key Lab. of Comput. Networks and Information Security Xidian University Xi'an China

ISBN: (纸本)9780769537443

Since biometric data are unique and permanent characteristics of individuals, the privacy protection of biometric authentication schemes has become a common concern of the public. Recently, Tang et al. proposed a biometric-based authentication scheme in an attempt to solve the privacy concerns. However, their scheme cannot resist the attack of tamper. Motivated by these concerns, in this paper, we proposed a new biometric-based authentication scheme, which achieves identity privacy and transaction untraceability. Its security is based on the semantic security of the ElGamal algorithm. Analysis results show that our scheme is higher in efficiency than Tang et al. scheme does, and meanwhile, it can resist the tamper attack. It is concluded that the proposed scheme is more secure and more practical than the existing ones. © 2009 IEEE.

关键词： Authentication

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