Secretive Coded Caching With Shared Caches

@article{Meel2021SecretiveCC,
  title={Secretive Coded Caching With Shared Caches},
  author={Shreya Shrestha Meel and Balaji Sundar Rajan},
  journal={IEEE Communications Letters},
  year={2021},
  volume={25},
  pages={2849-2853}
}
We consider the problem of secretive coded caching in a shared cache setup where the number of users accessing a particular helper cache is more than one, and every user can access exactly one helper cache. In secretive coded caching, the constraint of perfect secrecy must be satisfied. It requires that the users should not gain, either from their caches or from the transmissions, any information about the content of the files that they did not request from the server. In order to accommodate… 
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A Secretive Coded Caching for Shared Cache Systems using PDAs
TLDR
This paper proposes a procedure to obtain new secretive coded caching schemes for shared caches with reduced subpacketization levels and derives a lower bound on the secretive transmission rate using cut-set arguments and demonstrates the order-optimality of the proposed secretive coded caches scheme.

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