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RISS 인기검색어
- 검색키워드
- 저자 : Vikas Sejwar (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Improved Trust Based Routing Mechanism in DSR Routing Protocol in MANETs
Ankita Sahu,Vikas Sejwar 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.1
Mobile Ad hoc Network (MANET) is a self organizing wireless network for mobile devices. They do not need any fixed infrastructure to be configured which makes it more suitable to be used in environments that require on-the-fly setup. The present work discusses the challenging issues in MANET routing security. It presents improved DSR, a trust-based scheme for securing DSR routing protocol in MANET using the friendship mechanism and gateway. The path which is most optimum is chosen as the final route from source to destination. The gateway nodes should not be malicious .The nodes can evaluate the routing paths according to some selected features (such as node reputation and identity information) before forwarding the data through these routes. It is implemented in our scheme, simulation (using NS2). This scheme provides a robust environment where MANET nodes can trust each other in a secure community. Experimental results show that our gateway based DSR improves network performance to much extent.
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Sybil Attack Detection and Analysis of Energy Consumption in Cluster Based Sensor Networks
Sweety Saxena,Prof. Vikas Sejwar 보안공학연구지원센터 2014 International Journal of Grid and Distributed Comp Vol.7 No.5
Wireless Sensor Network is an emerging new technology extensively used for large-scale real-time data processing due to its characteristics and is used in application areas such as in civilian and military domains. These networks are vulnerable to several security attacks. In this paper, we emphasize on Sybil attack, which is a harmful threat to sensor networks and proposed an algorithm for Sybil attack detection based on Time difference of Arrival (TDOA) localization method, which detects the malicious behavior of the head node and member nodes in a cluster based network.
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Avoidance of Hidden Terminal & Exposed terminal problem Using Directional MAC Protocol
Khushboo Agarwal,Vikas Sejwar 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.4
The mobile Adhoc network is deployed in the environment where traditional wired network cannot be established due to its required features and their limitation. Use of directional antenna is one of the most promising technique for the high speed wireless network such as IEEE 802.11.Proposed a new directional MAC protocol to address the Directional Hidden terminal problem and Directional Exposed Terminal Problem.
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QR Code Steganography for Multiple Image and Text Hiding using Improved RSA-3DWT Algorithm
Shweta Sharma,Prof. Vikas Sejwar 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.7
In this research, we presented another implanting calculation for QR Code Image Steganography and Text Hiding, which is based on 3-discrete wavelet transform (DWT) and improved RSA algorithm. Firstly, enter the text message and choose four random numbers for RSA encryption. After that, take four pictures: one is cover image and another is secret image. In the process of embedding, we divide RGB image into three planes: Red, Green and Blue. In this work, embed multiple color secret images into a single cover image for providing security. At last, encrypted text message is concealed into an embedded picture using Least significant bit (LSB). We evaluate performance on the basis of the peak signal noise ratio (PSNR) and structural similarity matrix (SSIM) with different varying weights. In this proposed, compared this algorithm to 1-DWT. In the extraction process, recover three secret image from stego image and decrypt text message.In this experiment, improved PSNR value as compared to previous paper. The experimental outcomes will be reached upto 84%. In our method, DWT is applied to decompose the cover image and produce the low and high frequency coefficients to take benefits of robustness and security goods.
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