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2016 International Conference on Information and Communication Technology and its Applications, ICTA 2016

作者： Onwuka, Elizabeth N. Afolayan, David O. Abubakar, Wasiu Ibrahim, Joshua I. Department of Telecommunications Engineering Federal University of Technology Minna Nigeria Department of Cyber Security Science Federal University of Technology Minna Nigeria Department of Computer Science Federal University of Technology Minna Nigeria

In the past ten years, mobile broadband has made an inroad into the country and just in the last six years a twenty-two percent leap has been gained with respect to Internet use penetration. To this end the use of Information and Communication Technology by Nigerians for their various daily activities has gradually but steadily grown. This has remarkably created new jobs, raised the national GDP, and has generally improved ways people live and do business. This advancement however has proven to be a double edged sword as a good number of Nigerians have reportedly fallen victim to different forms of threats online or might have heard about victims of such crimes, which has led to gross distrust in new and existing innovations in the world of ICT. The negative consequence of this on the potential economic alongside technological development that the country could enjoy from the ICT sector is quite obvious. This paper investigates the nature of threats posed at Nigerians as they go online via an online survey. The survey shows 95.2% of respondents are regular internet users with 14.4% as victims of online fraud.

关键词： Surveys

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Reencryption scheme for secure data sharing

Reencryption scheme for secure data sharing

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2016 International Conference on Communication and Signal Processing, ICCSP 2016

作者： Muthusenthil, B. Nivetha, D. Kim, Hyunsung Dept. Computer Science and Engineering Valliammai Engineering College Chennai India Dept. of Cyber Security Kyungil University Dept. of Mathematical Sciences University of Malawi Kyungsan Korea Republic of

ISBN: (纸本)9781509003969

Cloud computing is an evolutionary model for distributed computing, which consists of centralized data centers providing resources for massive scalable computing. Major security challenges are the generation, distribution, and usage of encryption keys in cloud systems. One of ways to provide security, proxy re-encryption scheme is proposed, in which a semi-trusted proxy transforms a cipher-text for data sender into a cipher-text for data receiver without seeing the underlying plaintext. This paper proposes a new re-encryption scheme for secure data sharing, which is based on a trusted authority. Experimental results show that our scheme attains good performance than the other previous schemes. © 2016 IEEE.

关键词： Cryptography

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Bandwidth-aware delayed repair in distributed storage systems 24

Bandwidth-aware delayed repair in distributed storage system...

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24th IEEE/ACM International Symposium on Quality of Service, IWQoS 2016

作者： Shen, Jiajie Gu, Jiazhen Zhou, Yangfan Wang, Xin School of Computer Science Fudan University Shanghai China The State Key Laboratory of Integrated Services Networks Xidian University Xi'an China Engineering Research Center of Cyber Security Auditing and Monitoring Ministry of Education China

ISBN: (纸本)9781509026340

In data storage systems, data are typically stored in redundant storage nodes to ensure storage reliability. When storage nodes fail, with the help of the redundant nodes, the lost data can be restored in new storage nodes. Such a regeneration process may be aborted, since storage nodes may fail during the process. Therefore, reducing the time of regeneration process is a well-known challenge to improve the reliability of storage systems. Delayed repair is a typical repair scheme in real-world storage systems. It reduces the overhead of the regeneration process by recovering multiple node failures simultaneously. How to reduce the regeneration time of delayed repair is yet to be well addressed. Since available bandwidth is flowing in storage systems and the regeneration time is seriously affected by the available bandwidth, we find the key to solve this problem is determining the start time of the regeneration process. Via modeling this problem with Lyaponuv optimization framework, we propose an OMFR scheme to reduce the regeneration time. The experimental results show that OMFR scheme can reduce cumulative regeneration time by up to 78% compared with traditional delayed repair schemes. © 2016 IEEE.

关键词： Repair

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Argus: Smartphone-Enabled Human Cooperation via Multi-agent Reinforcement Learning for Disaster Situational Awareness

Argus: Smartphone-Enabled Human Cooperation via Multi-agent ...

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International Conference on Autonomic Computing (ICAC)

作者： Vidyasagar Sadhu Gabriel Salles-Loustau Dario Pompili Saman Zonouz Vincent Sritapan Department of Electrical and Computer Engineering Rutgers University Cyber Security Division Department of Homeland Security Science & Technology Directorate

ISBN: (纸本)9781509016556

Argus exploits a Multi-Agent Reinforcement Learning (MARL) framework to create a 3D mapping of the disaster scene using agents present around the incident zone to facilitate the rescue operations. The agents can be both human bystanders at the disaster scene as well as drones or robots that can assist the humans. The agents are involved in capturing the images of the scene using their smartphones (or on-board cameras in case of drones) as directed by the MARL algorithm. These images are used to build real time a 3D map of the disaster scene. Via both simulations and real experiments, an evaluation of the framework in terms of effectiveness in tracking random dynamicity of the environment is presented.

关键词： Three-dimensional displays Buildings Real-time systems Drones Smart phones Cameras Face

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GRAAD: Group anonymous and accountable D2D communication in mobile networks

arXiv

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arXiv 2017年

作者： Hsu, Ruei-Hau Lee, Jemin Quek, Tony Q.S. Chen, Jyh-Cheng ITrust Centre for Research in Cyber Security Singapore University of Technology and Design Singapore487372 Singapore Department of Information and Communication Engineering Daegu Gyeongbuk Institute of Science and Technology 43016 Korea Republic of Information Systems Technology and Design Pillar Singapore University of Technology and Design Singapore487372 Singapore Department of Computer Science National Chiao Tung University 300 Taiwan

Device-to-Device (D2D) communication is mainly launched by the transmission requirements between devices for specific applications such as Proximity Services in Long-Term Evolution Advanced (LTE-A) networks, and each application will form a group of registered devices for the network-covered and network-absent D2D communications. During the applications of D2D communication, each device needs to identify the other devices of the same group in proximity by their group identity. This leads to the exposure of group information, by which the usage of applications can be analyzed by eavesdroppers. Hence, this work introduces network-covered and network-absent authenticated key exchange protocols for D2D communications to guarantee accountable group anonymity, end-to-end security to network operators, as well as traceability and revocability for accounting and management requirements. We formally prove the security of those protocols, and also develop an analytic model to evaluate the quality of authentication protocols by authentication success rate in D2D communications. Besides, we implement the proposed protocols on android mobile devices to evaluate the computation costs of the protocols. We also evaluate the authentication success rate by the proposed analytic model and prove the correctness of the analytic model via simulation. Those evaluations show that the proposed protocols are feasible to the performance requirements of D2D communications. Copyright © 2017, The Authors. All rights reserved.

关键词： Analytical models

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Study on Demand Response of Residential Power Customer

Study on Demand Response of Residential Power Customer

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Workshop 7 2016

作者： Xiu Cao Haiyong Jiang Lei Huang Xueping Wang Xuqi Zhang School of Computer Science Fudan University Engineering Research Center of Cyber Security Auditing and Monitoring Ministry of Education

In order to optimize the ladder-pricing scheme in Shanghai, we present a multi-objective optimization model(MOOM). To build this model, first we use price elasticity theory;divide the ladder pricing into peak electricity bill and valley electricity bill in the time dimension to model the single-user demand response. Second based on the single-user demand response model, combined with the overall users' electricity distribution density function, we build an all-users demand response model. The proposed model has two objectives: minimize energy consumption and maximize residents' satisfaction. Simulation results confirm that the proposed model can optimize the ladder-pricing scheme.

关键词： Demand Response Ladder Pricing Price Elasticity Ladder Pricing Optimization

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HybridFlow: A lightweight control plane for hybrid SDN in enterprise networks

HybridFlow: A lightweight control plane for hybrid SDN in en...

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International Workshop on Quality of Service

作者： Siyuan Huang Jin Zhao Xin Wang School of Computer Science Fudan University Shanghai China Ministry of Education Engineering Research Center of Cyber Security Auditing and Monitoring China

ISBN: (纸本)9781509026357

Software-Defined Networking (SDN) has great potentials in changing the fragile and complex enterprise networks. One operational challenge to SDN deployment is the settlement of legacy switches. A hybrid SDN consisting of both SDN and legacy switches may be a tradeoff. Nevertheless most of the current SDN control planes can not handle legacy switches. To overcome this problem, we present HybridFlow, a lightweight control plane for hybrid SDN. HybridFlow can abstract a hybrid network into a logical SDN network and existing SDN control applications can run on it transparently.

关键词： Control systems Ports (computers) Servers computers Resource management Prototypes Software

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Implementation of switching circuit models as transfer functions

Implementation of switching circuit models as transfer funct...

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International Symposium on Circuits and Systems

作者： David Kebo Houngninou Mitchell A Thornton Department of Computer Science and Engineering SMU Dallas Texas USA Darwin Deason Institute for Cyber Security SMU Dallas Texas USA

ISBN: (纸本)9781479953424

A transfer function is a mathematical function relating the output or response of a system to the input or stimulus. It is a concise mathematical model representing the input/output behavior of a system and is widely used in many areas of engineering including system theory and signal analysis. Binary Decision Diagrams (BDDs) are a canonical representation of Boolean functions. We implement a framework to build transfer function models of digital switching functions using BDDs and demonstrate their application on simulation and implication.

关键词： Logic gates Transfer functions Binary decision diagrams Mathematical model Wires Integrated circuit modeling Boolean functions

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Teaching test-drive development using Dojo

Journal of Computing Sciences in Colleges

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Journal of Computing sciences in Colleges 2017年第4期32卷

作者： Young Lee Dhanunjaya Bhargavan Marepalli Jeong Yang Electrical Engineering and Computer Science Department Texas A&M University-Kingsville Computing and Cyber Security Department Texas A&M University-San Antonio

Teaching Test-Driven Development (TDD) to the students is challenging. TDD is best learned when it is actually performed rather than read about. Especially when the students are novice to TDD, starting by writing a test first seems to be extremely hard, and proceeding with the small steps that the TDD cycle requires often demands explicit guidance. Coding Dojo is a dynamic and collaborative activity where people can practice programming, especially techniques related to agile methods. This paper discusses the two experiments conducted to find out how Coding Dojo methodology improves the code coverage of students programming and how it improves motivation in students to learn TDD.

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Fast shortest-path queries on large-scale graphs

Fast shortest-path queries on large-scale graphs

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International Conference on Network Protocols

作者： Qiongwen Xu Xu Zhang Jin Zhao Xin Wang Tilman Wolf School of Computer Science Fudan University China Ministry of Education Engineering Research Center of Cyber Security Auditing and Monitoring China Department of Electrical and Computer Engineering University of Massachusetts Amherst USA

ISBN: (纸本)9781509032822

Shortest-path queries on weighted graphs are an essential operation in computer networks. The performance of such algorithms has become a critical challenge in emerging software-defined networks (SDN), since SDN controllers need to perform a shortest-path query for every flow. Unlike classic solutions (e.g., Dijkstra's algorithm), high-performance shortest-path query algorithms include two stages: preprocessing and query answering. Despite the improved query answering time, existing two-stage algorithms are still extremely time-consuming in preprocessing large-scale graphs. In this paper, we propose an efficient shortest-path query algorithm, called BBQ, which reduces the running time of both stages via tree decomposition. BBQ constructs a distance oracle in a bottom-top-bottom manner, which significantly reduces preprocessing time over existing algorithms. In addition, BBQ can answer batch queries in bulk by traversing the decomposed tree instead of executing separate queries. Our experimental results show that BBQ outperforms state-of-the-art approaches by orders of magnitude for the running time of the preprocessing stage. Meanwhile, BBQ also offers remarkable acceleration for answering batches of queries. As a result, SDN controllers that use BBQ can sustain 1.1-27.9 times higher connection request rates.

关键词： Phase locked loops Conferences Protocols Acceleration Runtime Time complexity

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