ORCID Profile
0000-0002-8698-6709
Current Organisation
UNSW Sydney
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Publisher: Inderscience Publishers
Date: 2011
Publisher: Association for Computing Machinery (ACM)
Date: 18-09-2023
DOI: 10.1145/3596448
Abstract: A Fair Digital Exchange is defined as either all or none of the participants achieving a (predetermined) desirable outcome. This work addresses third party mediated systems for digital content where mutually unknown, and hence non-trusting, buyers, sellers and the mediator (third party) take part in an exchange protocol. We address the lack of guaranteed fairness, as defined above, in the existing platforms for this setting. We present TEDX, a decentralized solution for guaranteed three party fair exchange of digital goods with scalability and support for incremental deployment over the existing (non-fair) platforms. TEDX combines carefully crafted message exchanges with incentive schemes designed to deter malicious behavior. TEDX also leverages ideas from blockchain anchored state-channels to provide trusted execution while minimizing the operational overheads of blockchain. We present the design and a security analysis of TEDX to validate the claimed fairness properties. We also present the details of a prototype implementation of TEDX leveraging Hyperledger Fabric and performance evaluation of the same on a realistic testbed spanning five public cloud zones. Our results indicate that TEDX adds only a minimal overhead of 16% while being 46x faster than a naive blockchain solution, thereby demonstrating that TEDX is scalable.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2021
Publisher: IEEE
Date: 04-2011
Publisher: Springer Science and Business Media LLC
Date: 05-2012
Publisher: Springer Berlin Heidelberg
Date: 2013
Publisher: IEEE
Date: 09-2011
Publisher: IEEE
Date: 03-2015
Publisher: Springer International Publishing
Date: 2014
Publisher: Association for Computing Machinery (ACM)
Date: 12-2009
Abstract: We propose a new grid-group deployment scheme in wireless sensor networks. We use combinatorial designs for key predistribution in sensor nodes. The deployment region is ided into square regions. The predistribution scheme has the advantage that all nodes within a particular region can communicate with each other directly and nodes which lie in a different regions can communicate via special nodes called agents which have more resources than the general nodes. The number of agents in a region is always three, whatever the size of the network. We give measures of resiliency taking the Lee distance into account. Apart from considering the resiliency in terms of fraction of links broken, we also consider the resiliency as the number of nodes and regions disconnected when some sensor are compromised. This second measure, though very important, had not been studied so far in key predistribution schemes which use deployment knowledge. We find that the resiliency as the fraction of links compromised is better than existing schemes. The number of keys preloaded in each sensor node is much less than all existing schemes and nodes are either directly connected or connected via two hop paths. The deterministic key predistribution schemes result in constant-time computation overhead for shared key discovery and path key establishment.
Publisher: Springer International Publishing
Date: 2017
Publisher: MDPI AG
Date: 10-10-2023
DOI: 10.3390/S23208352
Publisher: IEEE
Date: 04-2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2018
Publisher: Springer Berlin Heidelberg
Date: 2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2013
DOI: 10.1109/TC.2012.138
Publisher: Springer International Publishing
Date: 2018
Publisher: Springer Science and Business Media LLC
Date: 26-10-2018
Publisher: Elsevier BV
Date: 06-2022
Publisher: Elsevier BV
Date: 11-2018
Publisher: IEEE
Date: 03-2016
Publisher: Springer International Publishing
Date: 2022
Publisher: IEEE
Date: 06-2013
Publisher: Allerton Press
Date: 07-2021
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: ACM
Date: 10-07-2023
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2023
Publisher: Inderscience Publishers
Date: 2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2023
Publisher: Springer International Publishing
Date: 2016
Publisher: Elsevier BV
Date: 2014
Publisher: IEEE
Date: 12-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2022
Publisher: Springer Nature Switzerland
Date: 2022
Publisher: IEEE
Date: 05-2014
DOI: 10.1109/AINA.2014.32
Publisher: Elsevier BV
Date: 2019
Publisher: IEEE
Date: 05-2018
Publisher: Springer Berlin Heidelberg
Date: 2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2017
Publisher: Springer International Publishing
Date: 2016
Publisher: Springer International Publishing
Date: 2019
Publisher: Springer International Publishing
Date: 2018
Publisher: Elsevier BV
Date: 08-2020
Publisher: Springer Singapore
Date: 19-08-2021
Publisher: IEEE
Date: 12-2019
Publisher: IEEE
Date: 07-2018
Publisher: American Institute of Mathematical Sciences (AIMS)
Date: 2019
DOI: 10.3934/AMC.2019043
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2014
DOI: 10.1109/TPDS.2013.38
Publisher: Elsevier BV
Date: 2020
Publisher: IEEE
Date: 06-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2021
Publisher: Springer Berlin Heidelberg
Date: 2011
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2023
Publisher: IEEE
Date: 03-2016
DOI: 10.1109/AINA.2016.65
Publisher: Springer International Publishing
Date: 2020
Publisher: SAGE Publications
Date: 11-2009
DOI: 10.1080/15501320802581466
Abstract: We consider a grid-based deployment scheme in which keys are predistributed in sensor nodes following a transversal design. This scheme was first proposed by Ruj, Maitra, and Roy in [ 19 ]. In their scheme the RF region was considered to be the a square of appropriate dimension. In this article, we consider the RF region to be the Lee sphere of appropriate radius. This is a better approximation than the square RF region and all calculations of connectivity and resiliency is done with respect to this parameter.
Publisher: American Institute of Mathematical Sciences (AIMS)
Date: 2012
No related grants have been discovered for Sushmita Ruj.