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Coded Caching With File and Demand Privacy
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DOI：10.1109/LCOMM.2022.3184765.png)
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Abstract
En 中文
This letter studies coded caching with file and demand privacy (f&d-privacy) which guarantees that each user learns no information neither about other users' demands, nor about non-demanded files. First, we prove that an f&d-private coded caching system can also resist the attacks of an external eavesdropper. We then characterize the exact memory-rate trade-off for N = K = 2. Finally, we propose coded caching schemes to achieve the minimal-memory point (M = 1, R = K), which is tight if N >= 2K, and the minimal-rate point (M = N(K - 1) + 1, R = 1) on the memory-rate trade-off.
Keywords:
Coded caching
file privacy
demand privacy
the memory-rate trade-off
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