The Experts below are selected from a list of 60840 Experts worldwide ranked by ideXlab platform

Khaled Alghathbar - One of the best experts on this subject based on the ideXlab platform.

  • cryptanalysis and Security improvements of two factor user authentication in wireless sensor networks
    Sensors, 2010
    Co-Authors: Muhammad Khurram Khan, Khaled Alghathbar
    Abstract:

    User authentication in wireless sensor networks (WSN) is a critical Security issue due to their unattended and hostile deployment in the field. Since sensor nodes are equipped with limited computing power, storage, and communication modules; authenticating remote users in such resource-constrained environments is a paramount Security Concern. Recently, M.L. Das proposed a two-factor user authentication scheme in WSNs and claimed that his scheme is secure against different kinds of attack. However, in this paper, we show that the M.L. Das-scheme has some critical Security pitfalls and cannot be recommended for real applications. We point out that in his scheme: users cannot change/update their passwords, it does not provide mutual authentication between gateway node and sensor node, and is vulnerable to gateway node bypassing attack and privileged-insider attack. To overcome the inherent Security weaknesses of the M.L. Das-scheme, we propose improvements and Security patches that attempt to fix the susceptibilities of his scheme. The proposed Security improvements can be incorporated in the M.L. Das-scheme for achieving a more secure and robust two-factor user authentication in WSNs.

Tzonelih Hwang - One of the best experts on this subject based on the ideXlab platform.

  • a realistic lightweight anonymous authentication protocol for securing real time application data access in wireless sensor networks
    IEEE Transactions on Industrial Electronics, 2016
    Co-Authors: Prosanta Gope, Tzonelih Hwang
    Abstract:

    User authentication in wireless sensor networks (WSN) is a critical Security issue due to their unattended and hostile deployment in the field. Since the sensor nodes are equipped with limited computing power, storage, and communication modules, authenticating remote users in such resource-constrained environment is a paramount Security Concern. Until now, impressive efforts have been made for designing authentication schemes with user anonymity by using only the lightweight cryptographic primitives, such as symmetric key encryption/decryption and hash functions. However, to the best of our knowledge, none has succeeded so far. In this paper, we take an initial step to shed light on the rationale underlying this prominent issue. In order to do that here at first, we demonstrate that the existing solutions for anonymous user authentication in WSN are impractical. Subsequently, we propose a realistic authentication protocol for WSN, which can ensure various imperative Security properties like user anonymity, untraceability, forward/backward secrecy, perfect forward secrecy, etc.

Delvonei Alves De Andrade - One of the best experts on this subject based on the ideXlab platform.

  • Proposal of a Methodology for the Assessment of Security Levels of IoT Wireless Sensor Networks in Nuclear Environments
    World Journal of Nuclear Science and Technology, 2018
    Co-Authors: Marcia M Savoine, Mario O. De Menezes, Delvonei Alves De Andrade
    Abstract:

    The use of Wireless Sensor Networks (WSN) associated with the reality of an Internet of Things (IoT) scenario in nuclear environments is a growing Security Concern. In this context, standards are intensified to preserve the physical integrity of these facilities considered to be highly critical due to the size of the impacts of safety accidents. This paper presents a proposal to build a methodology to evaluate the Security levels of WSNs with IoT devices when used in nuclear areas. The proposal is initially based on related work to establish a more concrete initial framework and is structured in consistent steps from previous scientific studies.

Muhammad Khurram Khan - One of the best experts on this subject based on the ideXlab platform.

  • cryptanalysis and Security improvements of two factor user authentication in wireless sensor networks
    Sensors, 2010
    Co-Authors: Muhammad Khurram Khan, Khaled Alghathbar
    Abstract:

    User authentication in wireless sensor networks (WSN) is a critical Security issue due to their unattended and hostile deployment in the field. Since sensor nodes are equipped with limited computing power, storage, and communication modules; authenticating remote users in such resource-constrained environments is a paramount Security Concern. Recently, M.L. Das proposed a two-factor user authentication scheme in WSNs and claimed that his scheme is secure against different kinds of attack. However, in this paper, we show that the M.L. Das-scheme has some critical Security pitfalls and cannot be recommended for real applications. We point out that in his scheme: users cannot change/update their passwords, it does not provide mutual authentication between gateway node and sensor node, and is vulnerable to gateway node bypassing attack and privileged-insider attack. To overcome the inherent Security weaknesses of the M.L. Das-scheme, we propose improvements and Security patches that attempt to fix the susceptibilities of his scheme. The proposed Security improvements can be incorporated in the M.L. Das-scheme for achieving a more secure and robust two-factor user authentication in WSNs.

B Suresh - One of the best experts on this subject based on the ideXlab platform.

  • a review on Security Concern with trusty supporting reputation based management for cloud services
    International Journal of Research, 2017
    Co-Authors: Vinay G Kamal, Ashok M Kumar, B Suresh
    Abstract:

    cloud computing is gaining a considerable momentum as a new computing paradigm for providing flexible services, platforms, and infrastructures on demand. In cloud services make the trust management in cloud environments a significant challenge. According to researchers at Berkeley, trust and Security is ranked one of the top 10 obstacles for the adoption of cloud computing. Cloud computing(CC)helps IT companies to focus on their business or strategic projects rather than technical aspects. Mainly three service model are offered by cloud which are Infrastructure as a service (IaaS), Platform as a Service (PaaS) and Software as a service (SaaS). At SaaS level applications are hosted by providers on network, these services are used by customers over internet on demand basis. A web browser is used to access different software’s from the cloud providers. A user need not to install software on his machine, only an instance of software is needed. For example Google Apps, SQL Azure. In PaaS model as name implies it gives platform to build various applications. Various facilities offered by PaaS to deploy applications include application designing, development, testing and hosting. In the process one of the most challenging issues for the adoption and growth of cloud computing. For improvements in the classical work is enhanced using simulated annealing that is very effective and making use of metallurgy based implementations. In metallurgy, the temperature factor is taken for the forging and development of metal components. The freezing point is achieved in a loop of down level temperature. In this work, the simulated annealing based implementation is used with the integrated with dynamic Security key for enhanced Security trust architecture. The proposed META (Metaheuristic Enhanced Trust Assessment) architecture is giving effective results in terms of turnaround time, Security factor, cost, complexity and trust value.