Browsing by Author "Paul, S."

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A Novel Approach of Network Security Using Genetic Algorithm
(Springer Science and Business Media Deutschland GmbH, 2024) Bera, A.; Sinha, D.; Maity, S.; Paul, S.
This article focuses on providing security of sensitive information and message transmission using symmetric key cryptosystem based on genetic algorithm and combined with mathematical and bitwise operators to provide confidentiality, authenticity, integrity, and nonrepudiation of the messages. A plain text is encrypted using a private key and resizer parameter taken as input from the user to produce an intermediate cipher which is further encrypted using genetic algorithm and mathematical operations to obtain the final cipher. The level of complexity of encryption and the size of the final cipher text can be regulated using the resizer parameter. The final cipher is decrypted first to obtain an intermediate cipher, which in turn is decrypted using the private key to get back the plain text. Â© 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
Communication Architecture for Autonomous Aerial Traffic Management
(Institute of Electrical and Electronics Engineers Inc., 2022) Paul, S.; Jana, S.; Chopra, O.; Ratnoo, A.; Ghose, D.
This paper presents a multi-agent communication paradigm for autonomous aerial traffic management. Multi-drone missions based on the existing ROS-based communication architecture heavily depend on the master node, and communication delay between nodes might not be sufficient for efficient inter-agent collision avoidance. In this paper, we have proposed a hybrid ROS-ROS2 communication architecture for centralised traffic management with the provision of distributed communication for collision avoidance and conflict resolution at intersections. The base station server responsible for traffic management runs on a ROS2 environment, ROS is used for communication with each onboard autopilot, and an intermediate add-on-module interfaces ROS and ROS2 messages. The content of the communication packets between the different nodes is decided based on the design requirements. Overall communication architecture is validated through simulation and hardware experiments. Â© 2022 IEEE.
Extended game theoretic dirichlet based collaborative intrusion detection systems
(2016) Paul, S.; Makkar, T.; Chandrasekaran, K.
Security has always been one of the key issues of any man-made system, this paved the way for a submodule or application or a device to monitor or system for malicious activities. This system or submodule or device is known as Intrusion Detection System (IDS). As technology evolves so does the associated threats and thus the intrusion detection system needs to evolve. Game theory throws in a different perspective which have not been looked upon much. Game theory provides a way of mathematically formalizing the decision making process of policy establishment and execution. Notion of game theory can be used in intrusion detection system in assisting in defining and reconfiguring security policies given the severity of attacks dynamically. We are trying to formulate a robust model for the theoretical limits of a game theoretic approach to IDS. The most important flaw of game theory is that it assumes the adversary�s rationality and doesn�t take into consideration multiple simultaneous attacks. Therefore, a collaborative trust and Dirichlet distribution based robust game theoretic approach is proposed which will try to resolve this issue. Reinforced learning approaches using Markov Decision Process will be utilized to make it robust to multiple simultaneous attacks. � Springer Science+Business Media Singapore 2016.
Extended game theoretic dirichlet based collaborative intrusion detection systems
(Springer Verlag service@springer.de, 2016) Paul, S.; Makkar, T.; Chandrasekaran, K.
Security has always been one of the key issues of any man-made system, this paved the way for a submodule or application or a device to monitor or system for malicious activities. This system or submodule or device is known as Intrusion Detection System (IDS). As technology evolves so does the associated threats and thus the intrusion detection system needs to evolve. Game theory throws in a different perspective which have not been looked upon much. Game theory provides a way of mathematically formalizing the decision making process of policy establishment and execution. Notion of game theory can be used in intrusion detection system in assisting in defining and reconfiguring security policies given the severity of attacks dynamically. We are trying to formulate a robust model for the theoretical limits of a game theoretic approach to IDS. The most important flaw of game theory is that it assumes the adversaryâ€™s rationality and doesnâ€™t take into consideration multiple simultaneous attacks. Therefore, a collaborative trust and Dirichlet distribution based robust game theoretic approach is proposed which will try to resolve this issue. Reinforced learning approaches using Markov Decision Process will be utilized to make it robust to multiple simultaneous attacks. Â© Springer Science+Business Media Singapore 2016.
Room-temperature ultraviolet-ozone annealing of ZnO and ZnMgO nanorods to attain enhanced optical properties
(Springer, 2020) Alam, M.J.; Murkute, P.; Sushama, S.; Ghadi, H.; Mondal, S.; Paul, S.; Das, D.; Pandey, S.K.; Chakrabarti, S.
ZnO and ZnMgO nanorods have proven to be promising materials for sensing, UV and deep UV based optoelectronic applications. A major drawback of ZnO and ZnMgO based thin films and nanorods is the presence of native point defects which deteriorates their optical efficiency and becomes an impediment to their efficient device applications. The furnace and rapid thermal annealing processes have overcome this up to a great extent but being high temperature processes, they put many fabrication and technological limits in device fabrication. Especially keeping an eye on the future flexible devices, herein we report ultraviolet-ozone (UVO) annealing as a room-temperature, simple and cost-effective annealing method to improve the optical efficiency of ZnO and ZnMgO nanorods along with control of defect states. The ZnO and ZnMgO nanorods were grown by hydrothermal method and annealed in UVO irradiation. UVO annealing substantially improved near band emission and suppressed defect band emissions. It is found that zinc interstitial atoms migrate from the top portion of ZnO nanorods towards the bottom of nanorods after UVO annealing, resulting in reduced zinc interstitial defects in the top portion of nanorods. X-ray diffraction results showed improvement in structural properties. XPS results confirmed suppression of oxygen vacancies and zinc interstitials and improvement in lattice oxygen in the ZnO nanorods after UVO annealing. Optimum times of UVO annealing for ZnO and ZnMgO nanorods were 30 and 50 min respectively. These findings will be helpful for the further development of ZnO and ZnMgO nanorods based high performance optoelectronic devices and sensors. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
Software development using context aware searching of components in large repositories
(2015) Paul, S.; Makkar, T.; Chandrasekaran, K.
This paper proposes a new approach to locate software components from large component online open source repositories which encompasses the inherent features of context-aware browsing, ranking and semantic tagging. Tagging of individual components helps making search fast and efficient. We are trying to improvise the results of context aware browsing by ranking them on the basis of Hidden Markov Models. The inputs to Hidden Markov Models consists of auto generated contextual queries. These queries formulate the resource set of our Hidden Markov model. The queries are ameliorated using reformulation, specialization, generalization and general association. This automation not only reduces the search space of components for an efficient browsing but also it enables developers to use those components whose existence they do not even prognosticate. � 2015 IEEE.