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A Secure Key Predistribution Scheme for WSN Using Elliptic Curve Cryptography
Kishore Rajendiran,Radha Sankararajan,Ramasamy Palaniappan 한국전자통신연구원 2011 ETRI Journal Vol.33 No.5
Security in wireless sensor networks (WSNs) is an upcoming research field which is quite different from traditional network security mechanisms. Many applications are dependent on the secure operation of a WSN, and have serious effects if the network is disrupted. Therefore, it is necessary to protect communication between sensor nodes. Key management plays an essential role in achieving security in WSNs. To achieve security, various key predistribution schemes have been proposed in the literature. A secure key management technique in WSN is a real challenging task. In this paper, a novel approach to the above problem by making use of elliptic curve cryptography (ECC) is presented. In the proposed scheme, a seed key, which is a distinct point in an elliptic curve, is assigned to each sensor node prior to its deployment. The private key ring for each sensor node is generated using the point doubling mathematical operation over the seed key. When two nodes share a common private key, then a link is established between these two nodes. By suitably choosing the value of the prime field and key ring size, the probability of two nodes sharing the same private key could be increased. The performance is evaluated in terms of connectivity and resilience against node capture. The results show that the performance is better for the proposed scheme with ECC compared to the other basic schemes.
Kavitha Nagarasampatti Palani,Nithya Ramasamy,Kamalakannan Vasantha Palaniappan,허윤석,Balasubramanian Natesan 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.76 No.-
This work focus to alleviate the fouling in Membrane bioreactor (MBR) by integrating electrooxidation,adsorptive cake, bio-film carriers and ozonation referred as Integrated Moving Bed Bioreactor (IMBBR). The total organic carbon (TOC), Chemical Oxygen Demand (COD) and Total Dissolved Solids (TDS)removal were observed as above 95%, 95% and 70% at 300 kPa with theflux increase in 35%. The numericalmodel was developed which proved less fouling which was in agreement with Scanning electronmicroscopy (SEM) and Liquid Chromatography and Mass Spectroscopy (LCMS). This study showed lessenergy consumption without the problem offilamentous bulking.