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Secretive Coded Caching from PDAs

Meel, SS and Rajan, BS (2021) Secretive Coded Caching from PDAs. In: 32nd IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 13-16 sept 2021, Virtual, Helsinki, pp. 373-379.

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Official URL: https://doi.org/10.1109/PIMRC50174.2021.9569455


The coded caching problem with secrecy constraint i.e., the users should not be able to gain any information about the content of the files that they did not demand, is known as the secretive coded caching problem. This was proposed by Ravindrakumar et al. in the paper titled "Private Coded Caching"that appeared in IEEE Transactions on Information Forensics and Security, 2018 and is characterised by subpacketization levels growing exponentially with the number of users. In the context of coded caching without secrecy, coded caching schemes at subexponential subpacketization levels are feasible by representing the caching system in the form of a Placement Delivery Array (PDA) and designing placement and delivery policies from it. Motivated by this, we propose a secretive coded caching scheme with low subpacketization using PDA, for users with dedicated caches in the centralized setting. When our scheme is applied to a special class of PDA known as MN PDA, the scheme proposed by Ravindrakumar et al. is recovered. © 2021 IEEE.

Item Type: Conference Paper
Publication: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords: Caching scheme; Caching system; Centralised; Forensics and securities; Information Forensics; Placement delivery array; Secret sharing schemes; Secretive coded caching; Special class; Subpacketization level
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 22 Nov 2021 11:59
Last Modified: 22 Nov 2021 11:59
URI: http://eprints.iisc.ac.in/id/eprint/70502

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