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international conference on Broadband networks (BroadNets)

作者： V. Paruchuri S. Basavaraju A. Durresi R. Kannan S.S. Iyengar Department of Computer Science Louisiana State University Baton Rouge LA USA

This paper presents a random asynchronous wakeup (RAW), a power saving technique for sensor networks that reduces energy consumption without significantly affecting the latency or connectivity of the network. RAW builds on the observation that when a region of a shared-channel wireless network has a sufficient density of nodes, only a small number of them need be active at any time to forward the traffic for active connections. RAW is a distributed, randomized algorithm where nodes make local decisions on whether to sleep, or to be active. Each node is awake for a randomly chosen fixed interval per time frame. High node density results in existence of several paths between two given nodes whose path length and delay characteristics are similar to the shortest path. Thus, a packet can be forwarded to any of several nodes in order to be delivered to the destination without affecting much the path length and delay experienced by the packet as compared to forwarding the packet through the shortest path. The improvement in system lifetime, due to RAW, increases as the ratio of idle-to-sleep energy consumption increases, and as the density of the network increases. Through analytical and experimental evaluations, we show that RAW improves communication latency and system lifetime compared to current schemes.

关键词： Protocols Wireless sensor networks Delay Energy consumption Sensor systems Energy efficiency Energy management Wireless communication Communication system security Sensor phenomena and characterization

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A secured microcellular network supported by system-VLSI

A secured microcellular network supported by system-VLSI

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IEEE Region 10 international conference TENCON

作者： T. Yamada Gong Xin T.H. Hung P.T. Hoa A. Toyoda Department of Computer Science Ritsumeikan University Kusatsu Japan

This paper proposes a public microcellular network allowing extension of LAN to the mobile network, which is named mobile multimedia metropolitan area network (MM-MAN). Users driving at highspeed can enjoy the same IT environment as in their office. This is one of the promising services of the 4G featuring IP-based high-bit-rate communications to fast terminals. The service requires secure VPN communications over the Internet section and wireless section to conceal business activities of users. Private IP addresses are used in the MM-MAN to veil the activity of the mobile user. The pre-shared secret keys, which are distributed from the VPN Server in the original home LAN are the basis to perform mutual authentication, registration and secure tunnel establishment for the mobile users in the MM-MAN. The established security associations (SA) are preserved unchangeably in an all IP cellular network during the movement of the mobile terminal across the microcells. The MM-MAN requires system-VLSI for intelligent base stations operated in each microcell allowing continuous packet transfer despite of frequent hand-offs. The base station is connected through PON (passive optical network), which is a kind of optical bus.

关键词： Passive optical networks Local area networks Mobile communication Virtual private networks Microcell networks Base stations Multimedia systems Metropolitan area networks Web and internet services Communication system security

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Providing secrecy in key management protocols for large wireless sensors networks

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Ad Hoc networks 2003年第4期1卷 455-468页

作者： Pietro, Roberto Di Mancini, Luigi V. Jajodia, Sushil Dipartimento di Informatica Univ. di Roma La Sapienza Via Salaria 113 00198 Roma Italy Ctr. for Secure Information Systems George Mason University University Drive VA 22030 United States

This paper defines a new protocol KeEs for the key establishment that meets the security requirements of the threat model proposed. The KeEs protocol assures forward and backward secrecy of the session key, so that if any set of the session keys is compromised, even including the current session key, these compromised keys do not undermine neither the security of future session keys, nor the security of past session keys. We illustrate the protocol in two different scenarios, one in which a Base Station acts as a synchronizer for re-keying the sensors, and a second scenario based on a completely distributed approach where the sensors rely only on themselves to achieve synchronization in the re-keying process. For both scenarios the KeEs protocol requires minimal overhead in terms of computations and transmissions. Finally, in KeES none of the resources needed by a generic sensor is bounded to the size of the WSN. © 2003 Elsevier B.V. All rights reserved.

关键词： Telecommunication networks

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Toward a security architecture for smart messages: Challenges, solutions, and open issues 23

Toward a security architecture for smart messages: Challenge...

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23rd international conference on distributed Computing systems Workshops

作者： Xu, G Borcea, C Iftode, L Rutgers State Univ Dept Comp Sci Piscataway NJ 08854 USA

ISBN: (纸本)0769519210

Smart Messages (SMs) are migratory execution units used to describe distributed computations over mobile ad hoc networks of embedded systems. The main benefits provided by SMs are flexibility, scalability, and the ability to perform distributed computations over networks composed of heterogeneous, resource constrained, unattended embedded systems. A key challenge that confronts SMs, however, is how to define a security architecture that protects both the SMs and the hosts, while preserving the SM benefits. In this paper we present a basic SM security architecture which sets up a framework for the security related issues of SMs and provides solutions for authentication, authorization, and secure SM migration. Since this paper is the first attempt to investigate the unique security challenges posed by a system based on mobile code executed over mobile ad hoc networks, we also discuss the main issues that remain to be solved for a more comprehensive SM security architecture.

关键词： computer architecture computer networks distributed computing Embedded computing Embedded system Mobile ad hoc networks Protection Samarium Scalability security

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Addressing security issues in geographically distributed systems 4

Addressing security issues in geographically distributed sys...

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4th Mexican international conference on computer Science (ENC 2003)

作者： Hannon, C Rinewalt, JR Texas Christian Univ Dept Comp Sci Ft Worth TX 76129 USA

ISBN: (纸本)0769519156

Using our Alchemy research system as an exemplar system, we discuss different approaches to overcoming port-controlled security boundary limitations to geographically distributed computing environments while maintaining the inherent security provided by these boundaries. This discussion is relevant to a number of parallel/distributed strategies for grid and cluster architectures. It also provides insight into general security concerns in future distributed computing networks and how these may best be overcome.

关键词： Artificial intelligence Communication system security computer science computer security distributed computing distributed processing Internet IP networks Pervasive computing Tunneling

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Active vulnerability assessment of computer networks by simulation of complex remote attacks

Active vulnerability assessment of computer networks by simu...

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2nd international conference on computer networks and Mobile Computing

作者： Kotenko, I St Petersburg Inst Informat & Automat St Petersburg Russia

ISBN: (纸本)0769520332

The paper describes the formal approach and software toot "Attack Simulator" intended for active vulnerability assessment of computer network security policy at the stages of design and deployment of network security systems. The suggested approach is based on stochastic grammar-based models of attacks and is realized via automatic imitation of remote computer network attacks of different complexity The paper characterizes the Attack Simulator architecture and the processes of generating malicious actions against computer network model and real-life computer networks. The results of experiments that demonstrate the Attack Simulator efficiency are described in detail.

关键词： Analytical models Communication system security Computational modeling computer networks computer security computer simulation Data security Software tools Stochastic processes Taxonomy

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Access-controlled resource discovery for pervasive networks 23

Access-controlled resource discovery for pervasive networks

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23rd international conference on distributed Computing systems Workshops

作者： Sarath, BRS Govindaraj, P

ISBN: (纸本)0769519210

This paper describes the design and implementation of an architecture for access-controlled resource discovery. This system achieves this goal by integrating access control with the Intentional Naming System (INS), a resource discovery and service location system. The integration is scalable, efficient, and fits well within a proxy-based security framework designed for dynamic networks. We provide performance experiments that show how our solution outperforms existing schemes. The result is a system that provides secure, Access-controlled resource discovery that can scale to large numbers of resources and users.

关键词： Access control Access protocols Algorithm design and analysis Communication channels Communication system security computer architecture Hardware Information security Pervasive computing Scalability

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Scalable PKI model based on location information

Scalable PKI model based on location information

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2nd international conference on computer networks and Mobile Computing

作者： Wang, Y Gu, DW Shanghai Jiao Tong Univ Dept Comp Sci & Engn Shanghai 200030 Peoples R China

When introducing public key infrastructure (PKI) in mobile telecommunication systems, one of the challenges is to span different PKI domains to establish certificate chain efficiently, and still keep the autonomy in l... 详细信息

ISBN: (纸本)0769520332

关键词： Communication system security computer networks computer science Content addressable storage Mobile communication Mobile computing National security Public key Public key cryptography Robustness

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LHAP: A lightweight hop-by-hop authentication protocol for ad-hoc networks 23

LHAP: A lightweight hop-by-hop authentication protocol for a...

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23rd international conference on distributed Computing systems Workshops

作者： Zhu, SC Xu, SH Setia, S Jajodia, S George Mason Univ Ctr Secure Informat Syst Fairfax VA 22030 USA

ISBN: (纸本)0769519210

Most ad hoc networks do not implement any network access control, leaving these networks vulnerable to resource consumption attacks where a malicious node injects packets into the network with the goal of depleting the resources of the nodes relaying the packets. To thwart or prevent such attacks, it is necessary to employ authentication mechanisms that ensure that only authorized nodes can inject traffic into the network. In this paper, we present LHAP, a scalable and light-weight authentication protocol for ad hoc networks. LHAP is based on two techniques: (i) hop-by-hop authenti-cation for verifying the authenticity of all the packets transmitted in the network and (ii) one-way key chain and TESLA for packet authentication and for reducing the overhead for establishing trust among nodes. We analyze the security of LHAP, and show LHAP is a lightweight security protocol through detailed performance analysis.

关键词： Access control Ad hoc networks Authentication Broadcasting Communication system control computer networks computer science Performance analysis Relays Routing protocols

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A distributed multi-agent architecture for computer security situational awareness

A distributed multi-agent architecture for computer security...

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6th international conference on Information Fusion

作者： Engelhardt, D Anderson, M Information Networks Division Defence Science and Technology Organisation Australia

ISBN: (纸本)0972184449

distributed systems for computer security analysis must perform information fusion in order to construct a cyberspace situational awareness picture. To date such fusion has been conducted in the context of a single abstraction set. As the complexity and heterogony increase, this approach becomes unwieldy. In a conceptual sense it is unscaleable. In this paper we describe an alternative approach, an architecture which supports concurrent reasoning in multiple sets of abstractions in a structured way. We present the architecture and a reasoning system for cyberspace situational awareness constructed using our approach.

关键词： agent architectures distributed analysis multi-abstraction architectures computer security

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