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A model for virtual network embedding across multiple infrastructure providers using genetic algorithm

Science China(Information Sciences) 2017年第4期60卷 101-112页

作者： Isha PATHAK deo prakash vidyarthi School of Computer and Systems Sciences Jawaharlal Nehru University

Network virtualization is an important aspect in cloud computing, where network is assumed to be consisting of infinite amount of nodes and links. The substrate network(physical network), has limited capacity and so virtual network embedding on the substrate network becomes a problem. Virtual network embedding is a computationally hard problem, considering various constraints on nodes and links. The proposed work applies Genetic Algorithm for the virtual network embedding problem for mapping multiple virtual network requests on infrastructure providers managing multiple substrate networks. Performance evaluation, through simulations,indicates that the proposed model preforms better for the performance metrics such as infrastructure provider revenue, acceptance ratio and node and link utilization in comparison to few other contemporary mapping models.

关键词： network virtualization virtual network embedding substrate network NP-hard genetic algorithm

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Secure Cloud Data Storage System Using Hybrid Paillier–Blowsh Algorith

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Computers, Materials & Continua 2021年第4期67卷 779-798页

作者： Bijeta Seth Surjeet Dalal Dac-Nhuong Le Vivek Jaglan Neeraj Dahiya Akshat Agrawal Mayank Mohan Sharma deo prakash K.D.Verma SRM University Delhi-NCRSonipatHaryana131029India Institute of Research and Development Duy Tan UniversityDanang550000Vietnam Department of Information Technology Duy Tan UniversityDanang 550000Vietnam Graphic Era Hill University DehradunUttarakhand248171India Amity University Haryana122412India Principal Software Lead Zillow Inc.USA School of Computer Science&Engineering Faculty of EngineeringSMVD UniversityKakryalKatra182320India Material Science Research Laboratory Department of PhysicsS.V.CollegeAligarh202001India

Cloud computing utilizes enormous clusters of serviceable and manageable resources that can be virtually and dynamically recongured in order to deliver optimum resource utilization by exploiting the pay-per-use ***,concerns around security have been an impediment in the extensive adoption of the cloud computing *** this regard,advancements in cryptography,accelerated by the wide usage of the internet worldwide,has emerged as a key area in addressing some of these security *** this document,a hybrid cryptographic protocol deploying Blowsh and Paillier encryption algorithms has been presented and its strength compared with the existing hybrid Advanced Encryption Standard(AES)and Rivest Shamir Adleman(RSA)*** for secure data storage protocol in two phases have been *** proposed hybrid protocol endeavors to improve the power of cloud storage through a decrease in computation time and ciphertext *** have been carried out with Oracle Virtual Box and Fog server used on an Ubuntu 16.04 *** grouping of asymmetric and homomorphic procedures has demonstrated enhanced *** usage has helped in decreasing the storage space and computation *** analysis in terms of computation overhead and quality of service parameters like loads of parameters with and without attacks,throughput,and stream length for different modes of block cipher mode has been carried *** analysis has been carried out by utilizing the Hardening Index as an audit parameter using Lynis ***,for halting the aforementioned approaches and for regulating trafc,rewall protection has been generated in the chosen hybrid ***,enhancements in the performance of the Paillier and Blowsh hybrid scheme with and without compression compared to the existing schemes using RSA and AES procedures have been demonstrated.

关键词： Cryptography blowsh homomorphic paillier cloud computing

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