Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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    Agent-based approach for the management of dynamic QoS violations in the inter-cloud environments
    (Springer Verlag service@springer.de, 2018) Thomas, M.V.; Chandrasekaran, K.; Mugeraya, G.
    Nowadays, considerable attention has been given by the researchers in the field of Cloud Computing to the emerging Inter-Cloud computing paradigm, where different cloud service providers collaborate or federate to achieve better QoS and cost efficiency. In this context, in order to prevent the unauthorized access of the distributed system components, authentication and authorization functions are to be enforced effectively. In this paper, we propose the conceptual model of the agent-based approach for the identity and access management in the dynamic inter-cloud environments where the Cloud Service Providers or the partners of the inter-cloud federation join and leave the federation dynamically. We further discuss the architectural model for the agent-based approach for solving the policy conflicts in the inter-cloud scenario while dealing with the access requests of cloud consumers in the inter-cloud environments. A few open issues in the area of identity and access management in the inter-cloud environment are also discussed. © 2018, Springer Nature Switzerland AG.
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    ARBAC: Attribute-enabled role based access control model
    (Springer Verlag service@springer.de, 2019) Singh, M.P.; Sudharsan, S.; Vani, M.
    Role Based Access Control (RBAC) is well-known for ease of policy administration, whereas Attribute Based Access Control (ABAC) is renowned for flexible policy specification and dynamic decision making capability. However, they both have some well-known limitations. In this paper, we present an approach that uniquely combines the benefits of RBAC and ABAC. Specifically, our approach associates attribute based rules with roles and permissions that enables the specification of multi-dimensional fine-grained attribute enabled role-based policies. These policies along with rules are also stored as in-memory data, which helps in minimizing the execution time of access requests. Experiments on a wide range of policy data sets demonstrate feasibility and scalability of the proposed approach. © Springer Nature Singapore Pte Ltd. 2019.
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    A USER AUTHENTICATION AND ACCESS CONTROL SCHEME FOR IoT-BASED HEALTHCARE USING BLOCKCHAIN
    (Institute of Electrical and Electronics Engineers Inc., 2021) Geetha, V.; Balakrishnan, B.
    IoT devices do not possess the potential to protect themselves from risk of the attackers as they are resource-constrained. Blockchain is arising as a decentralized and distributed technology with proficiency in delivering secure management, access control and user authentication for protecting data and services of IoT devices, guaranteeing integrity, confidentiality and availability. IoT-based healthcare applications has many benefits like reduced cost of healthcare, improved quality, remote monitoring of patients etc. Ensuring a robust and secure interactions between patient and healthcare providers is very important to protect sensitive medical data. A distributed and reliable user authentication and access control scheme to be used in IoT based Healthcare is designed and implemented here with the help of local gateways directly interfaced to smart contract based Ethereum Blockchain. The local gateways can manage multiple local IoT devices and improve scalability. This reduces the overhead of performing resource-consuming authentication tasks and blockchain-communication at the IoT devices. To exhibit the working of the framework, a case study is presented with two laptops and a Raspberry Pi. © 2021 IEEE.
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    Swaasthya Sampathee: Blockchain based EHR Framework
    (Institute of Electrical and Electronics Engineers Inc., 2022) Sadashiv, N.; Vachana, S.G.
    Advancement in the field of technology has trans-formed healthcare system with increased healthcare records. Electronic health records (EHR) helps improve wellness of patient and promotes quality of medical care. However, lack of ubiquitous access to fool proof EHR leads to poor health care facilities with higher expenses. Traditional approaches of storage and access of EHR compromises the ownership, authenticity of the records along with privacy and security issues. To mitigate these issues and promote widespread adoption of EHR especially in rural areas, an Ehereum's Ropsten blockchain based EHR framework in cloud environment is presented in this paper. The framework and its implementation is based upon the use of asymmetric cryptographic keys to securely store the EHR on Inter planetary file system (IPFS) and provide controlled access. The blockchain powered EHR facilitates security and privacy of patient's records and renders authorized ubiquitous access of patient's EHR. © 2022 IEEE.