Mehak Khurana - Academia.edu (original) (raw)

Papers by Mehak Khurana

Today, IOT (Internet of Things or Internet of Objects) is popular upcoming topic in Wireless netw... more Today, IOT (Internet of Things or Internet of Objects) is popular upcoming topic in Wireless network and in Wireless Network. Localization has become a crucial factor for various monitoring applications such as search, rescue, disaster relief, target tracking etc. Various WSN localization technologies are designed for calculating location of the unknown node. IOT is a latest approach where it combines many technologies, such as network technology, communication technology, database technology (Internet, Bluetooth, infrared, Wi-Fi, GPRS, 3G, SQL, etc) to provide location based service which enables different ways to obtain the location information of various objects. In this paper, we focus on to achieve higher localization accuracy based on services in which we deploy sensing devices to calculate the information of sensor nodes and its surrounding nodes where it requires less hardware and less implementation, To improve the localization accuracy, we propose a Weighted Centroid based on IOT mechanism capable to give accurate calculation between Anchor node and Unknown node.

Block cipher is in vogue due to its requirement for integrity, confidentiality and authentication... more Block cipher is in vogue due to its requirement for integrity, confidentiality and authentication. Differential and Linear cryptanalysis are the basic techniques on block cipher and till today many cryptanalytic attacks are developed based on these. Each variant of these have different methods to find distinguisher and based on the distinguisher, the method to recover key. This paper illustrates the steps to find distinguisher and steps to recover key of all variants of differential and linear attacks developed till today. This is advantageous to cryptanalyst and cryptographer to apply various attacks simultaneously on any crypto algorithm.

The various application areas in wireless sensor network are getting popular and are being used i... more The various application areas in wireless sensor network are getting popular and are being used in many different areas such as military, agriculture transportation including target detection. Localization is the important factor and basis of wireless sensor network. There are different algorithms to localize nodes in a sensor network. Due to malicious nodes, the exact location of target is not identified due to which accuracy of location of unknown nodes decreases. So, in this paper we have proposed a method in Weighted Centroid algorithm where threshold value for each individual node is set through which malicious node can be identified before calculating weights. The location of unknown node can be calculated with accuracy. This paper shows a threshold target localization method is used to identify the byzantine sensor in wireless sensor networks and calculating location with accuracy i.e without taking malicious nodes in to consideration for calculation.

Localization that is to be aware of position of the node in the network is an essential issue in ... more Localization that is to be aware of position of the node in the network is an essential issue in wireless sensor network (WSN). Localization algorithm in WSN can be divided into range-based and range-free algorithm. In this paper, we present the analysis of DV-Hop localization algorithm which is one of the range-free algorithms on the basis of various parameters. With this we tried to analyse the efficiency of the DV-Hop localization algorithm by changing various parameters.

In Wireless sensor network (WSN), estimating the exact position of sensor node is an important re... more In Wireless sensor network (WSN), estimating the exact position of sensor node is an important research problem and its location accuracy impacts the efficiency of localization algorithms. In this paper improved centroid range free localization method is proposed and comparison with conventional centroid is done by varying different parameters such as anchor nodes, communication range and node density. The simulation results show the performance of proposed algorithm is superior to that of the conventional centroid algorithm i.e. proposed centroid algorithm has high position accuracy.

Cryptography is fast growing field. To design cryptographically strong and efficient crypto-algor... more Cryptography is fast growing field. To design cryptographically strong and efficient crypto-algorithms, cryptographers should have the understanding of all the latest primitives and how to combine them, and the procedure to check the immunity against all the present day cryptanalytic methods. One is a good cryptographer if one is a good cryptanalyst and vice versa. This paper examines different design primitives adopted by of various existing block ciphers and stream ciphers and the comparative analysis is illustrated based on different parameters. These primitives can be advantageous in developing a new hybrid crypto-algorithm which is secure and immune to various cryptanalytic attacks.

Wireless sensor network (WSN) is proposed for many applications which are location dependent. So ... more Wireless sensor network (WSN) is proposed for many applications which are location dependent. So location information is important criteria for the capabilities of WSN. Centroid algorithm, one of the range free localization method is analysed in this paper by varying different parameters. We also study the localization principle and error sources of centroid algorithm. This algorithm possesses the advantages such as simple localization principle and easy realization. Simulation results show the localization error produced by this algorithm by varying network parameters.