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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Sanjay Kumar Dhurandher Isaac Woungang Abhishek Gupta Bharat K. Bhargava CAITFS Division of Information Technology Netaji Subhas Institute of Technology University of Delhi New Delhi India Department of Computer Science Ryerson University Toronto ONT Canada CAITFS Division of Information Technology Netaji Subas Institute of Technology University of Delhi New Delhi India Department of Computer Sciences Purdue University West Lafayette IN USA

Wormhole attacks are considered as a severe security threat in multi-hop wireless ad hoc networks. In this paper, we propose an Energy-Efficient Scheme Immune to Wormhole attacks (our so-called E2SIW). This protocol uses the location information of nodes to detect the presence of a wormhole, and in case a wormhole exists in the path, it finds alternate routes involving the nodes of the selected path so as to obtain a secure route to the destination. The protocol is capable of detecting wormhole attacks employing either hidden or participating malicious nodes. Simulations are conducted, showing that E2SIW can detect wormholes with a high detection rate, less overhead, and can consume less energy in less time, compared to the De Worm wormhole detection protocol, chosen as benchmark.

关键词： Routing protocols Grippers Routing Ad hoc networks Global Positioning System Synchronization

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New Voltage Mode Universal Filters Using Only Two CDBAs

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International Scholarly Research Notices 2013年第1期2013卷

作者： J. K. Pathak A. K. Singh Raj Senani Department of Electronics and Communication Engineering Echelon Institute of Technology Kabulpur Jasana-Manjawali Road Faridabad Haryana 121101 India Department of Electronics and Communication Engineering Faculty of Engineering and Technology HRCT Group of Institutions 7th Km Stone Meerut Road Morta Ghaziabad 201001 Indiaitsecgn.edu.in Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Sector-3 Dwarka New Delhi Delhi 110078 Indiansit.ac.in

Two new configurations for voltage mode universal filters (VMUFs) using only two current differencing buffered amplifiers (CDBAs) are proposed. Both of the new configurations can realize all the five standard types of the filters, namely, low pass (LP), high pass (HP), band pass (BP), band stop (BS), and all pass (AP), from the same topology. In contrast to previously known CDBA-based VMUFs, the new configurations do not need an additional active device for voltage inversion to realize all pass functions. The proposed configurations offer the tunability of the natural angular frequency ( ω o ), quality factor ( Q ), or the bandwidth (BW) through separate virtually grounded resistors. Moreover, both circuits have resistive input impedance (which can be made high) and a low output impedance to facilitate easy cascading without additional buffers. PSPICE simulation results, based upon commercially available AD844 ICs to implement the CDBA, are included which confirm the practical workability of the new VMUF configurations.

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Preventing packet dropping and message tampering attacks on AODV-based Mobile Ad Hoc Networks

Preventing packet dropping and message tampering attacks on ...

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International Conference on computer, Information and Telecommunication Systems (CITS)

作者： Mohammad S. Obaidat Isaac Woungang Sanjay Kumar Dhurandher Vincent Koo Department of Computer Science and Software Engineering Monmouth University West Long Branch NJ USA Department of Computer Science Ryerson University Toronto ONT Canada Division of Information Technology Netaji Subhas Institute of Technology University of Delhi India

Due to recent advances in mobile wireless communication and computing technologies, Mobile Ad hoc Networks (MANETs) have become the network of choice for use in various applications. But this advantage comes with serious security concerns, in particular from a wireless transmission medium perspective where such networks may be subject to data tampering and dropping attacks. This paper enhances a recently proposed AODV-based protocol named Highly Secured Approach against Attacks on MANETs (HSAM) that deals with this issue in at least two ways: (a) by performing for the first time a simulation study of the HSAM protocol; (b) by introducing a more efficient approach to securing the routes in the route selection phase of the HSAM scheme. Simulation results are provided, showing that the proposed enhanced HSAM scheme (so-called E-HSAM) outperforms HSAM in terms of packet delivery ratio, throughput rate, and number of broken links; chosen as performance metrics, when malicious nodes are present in the network.

关键词： Mobile computing Routing Mobile ad hoc networks Security Routing protocols

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New OTRA-Based Generalized Impedance Simulator

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International Scholarly Research Notices 2013年第1期2013卷

作者： Ashish Gupta Raj Senani D. R. Bhaskar A. K. Singh Department of Electronics and Communication Engineering I.T.S. Engineering College 46 KP-III Greater Noida Uttar Pradesh 201306 Indiaitsecgn.edu.in Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Sector-3 Dwarka New Delhi 110078 Indiansit.ac.in Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi 110025 Indiajmi.ac.in Department of Electronics and Communication Engineering H.R. Group of Institutions Ghaziabad Uttar Pradesh 201003 Indiahrit.ac.in

Operational transresistance amplifier (OTRA) has attracted considerable attention in the recent literature in several applications such as impedance simulation, universal biquad filter realization, realization of sinusoidal oscillators and multivibrators. However, to the best knowledge of the authors, any OTRA-based generalized impedance simulator circuits have not been reported so far. The purpose of this paper is to present such a circuit.

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Comparison of Two Security Protocols for Preventing Packet Dropping and Message Tampering Attacks on AODV-Based Mobile Ad Hoc Networks

Comparison of Two Security Protocols for Preventing Packet D...

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institute of Electrical and Electronics Engineers Globecom Workshops

作者： Isaac Woungang Sanjay Kumar Dhurandher Vincent Koo Issa Traore Department of Computer Science Ryerson University Division of Information Technology Netaji Subhas Institute of Technology University of Delhi Department of Computer and Electrical Engineering University of Victoria

ISBN: (纸本)9781467349420

In Emergency MANETs (eMANETs), the broadcasting nature of the wireless medium, the lack of pre-established trust relationship among nodes, and the frequent topology changes, cause some serious security challenges, making the network vulnerable to malicious attacks such as wormhole attacks. This paper investigates a recently proposed Advanced Encryption Standard (AES)-based routing algorithm (so-called AODV-Wormhole Attack Detection Reaction - here referred to as AODV-WADR-AES) for securing AODV-based eMANETs against wormhole attacks. The proposal consists of substituting the AES part of the scheme by the Triple Data Encryption Standard (TDES), yielding the AODV-WADR-TDES routing algorithm, with the goal to study the performance of the algorithm where mobile devices that are incompatible with AES are part of eMANET nodes. In doing so, markers in the form of hash codes are included in the data packets to help consolidating the data integrity. Simulation results are presented to validate the proposed AODV-WADR-TDEA scheme. It is also shown that the AODV-WADR-AES scheme outperforms the AODV-WADR-TDES scheme in terms of end-to-end delay, packet delivery ratio, and number of packets traversing through the wormhole link.

关键词： EMANETs Malicious nodes AODV Wormhole attack Cryptographic protocol AES Triple DES

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Verification of the veracity of brachistochrone curve and evolution of optimal control

Verification of the veracity of brachistochrone curve and ev...

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India International Conference on Power Electronics, IICPE 2010

作者： Jha, S.K. Parthsarathy, H. Gupta, J.R.P. Gaur, Prerna Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology Delhi-78 India Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Delhi-78 India

ISBN: (纸本)9781424478835

An evocative solution for the brachistochrone problem is presented by Euler-Lagrange equation. The solution of brachistochrone problem by variational approach i.e. Euler-Lagrange equation leads to the curve of a cycloid also known as brachistochrone curve. In this paper the exactness of the brachistochrone curve is verified through simulated studies in MATLAB, taking into cognizance different other curves viz. straight line and parabola along with cycloid. By computing the time taken by the bead in traversing the path between two points under gravity along all the curves considered, it is seen after comparison that the time taken along the cycloid is the least. ©2011 IEEE.

关键词： MATLAB

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DGW-canny: An improvised version of Canny edge detector

DGW-canny: An improvised version of Canny edge detector

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19th IEEE International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2011

作者： Gupta, Anand Dalal, Ravi Kumar Gupta, Rahul Wadhwa, Pulkit Department of Information Technology Netaji Subhas Institute of Technology New Delhi India Department of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781457721663

Edge detection is a field which has intrigued programmers since early 1970s. Since then, a good number of edge detection techniques have come up but the technique used by Canny [1] is very widely used. However, it has been observed that the results are not that efficient while dealing with alpha-numeric sections or geometrical figures or fine grain region in an image. To mitigate these limitations, we propose an improvised edge detection technique. The technique uses a Laplacian of Gaussian gradient with a new approach towards the thresholding section. The DGW-Canny framework has been experimented on a data set of images categorized on the basis of vectors proposed by us. The encouraging experimental results show that the DGW-Canny edge detector renders much better results compared to those of Canny. We have also performed experiments by varying parameters like nature and man-made component in an image. It is observed that varying the latter parameter adversely affects the edges of the image. © 2011 IEEE.

关键词： Edge detection

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SDC: Secure deletion classification

SDC: Secure deletion classification

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International Conference on Recent Trends in Information technology

作者： Gupta, Anand Singhal, Manik Gangil, Akash Mishra, Abhishek Division of Computer Engineering Delhi University Netaji Subhas Institute of Technology Dwarka New Delhi India

ISBN: (纸本)9781457705885

This paper introduces a novel perspective by classifying the secure deletion methods into four categories based on their methodology. For each of the proposed deletion category its associated algorithm is explained and its merits and demerits are listed down. The deletion algorithm for each category have been simulated and evaluated with respect to security level and time complexity on commonly used file formats. Based on the results derived, the application scenarios suitable for each of the deletion category are presented. This research is likely to help the user make a more informed choice of the deletion method suitable for his need. © 2011 IEEE.

关键词： Classification Classification algorithms Complexity theory Context Data Protection File systems Linux Measurement SDC Secure Deletion Security deletion method pattern classification secure deletion classification security of data time complexity

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A parallel approach to context-based term weighting

A parallel approach to context-based term weighting

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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Arora, Silky Chakravarty, Shampa Dept. of Information Technology Netaji Subhas Institute of Technology New Delhi India Dept. of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781467301251

Information retrieval and extraction essentially rely on estimating the relevance of words present in a large corpus of documents or text. One of the approaches to measuring relevance is analyzing the importance of words based on their statistical distribution within a document. Quite another approach ensues from their linguistic relevance within a logically perceived context. © 2011 IEEE.

关键词： Cluster computing

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State model for scheduling built-in self-test and scrubbing in FPGA to maximize the system availability in space applications

State model for scheduling built-in self-test and scrubbing ...

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India International Conference on Power Electronics, IICPE 2010

作者： Agarwal, Ankit Bhatia, Gaurav Chakraverty, Shampa Computer Engineering Department Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781424478835

Reconfigurable Field Programmable Gate Arrays (rFPGAs) are employed extensively in spacecraft electronic systems to implement low-power adaptable systems that provide high density functionality. A challenge that must be tackled during system design is their high susceptibility to radiation induced Single Event Upsets (SEUs). A burst of energized particles may cause extensive damage to circuits. Even if their presence is transient, SEU faults may cause a permanent failure when they afflict the configuration memory - SRAM. There are two ways in which timely detection of faults and timely action to circumvent them can be undertaken - (i) Online error detecting/correcting circuits that demand a high premium in terms of FPGA area for extending error-security and Fault Tolerance, thus increasing cost and redundancy, and (ii) Built-in Self-Test (BIST) that allows efficient and very high-coverage fault detection but the fault testing is performed off-line. In general, Reliability and Availability (R&A) is a crucial quality parameter. In this paper, we present a state model that schedules Self-tests judiciously to optimize availability while ensuring a high degree of reliability. The aim of system design is to determine an optimal value of the mean time to self testing λT so that faults are detected on time and are reconfigured to boost system availability.

关键词： Fault tolerance

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