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Information Leakage in Index Coding With Sensitive and Non-Sensitive Messages. (arXiv:2205.10827v1 [cs.IT])
May 24, 2022, 1:20 a.m. | Yucheng Liu, Lawrence Ong, Phee Lep Yeoh, Parastoo Sadeghi, Joerg Kliewer, Sarah Johnson
cs.CR updates on arXiv.org arxiv.org
Information leakage to a guessing adversary in index coding is studied, where
some messages in the system are sensitive and others are not. The non-sensitive
messages can be used by the server like secret keys to mitigate leakage of the
sensitive messages to the adversary. We construct a deterministic linear coding
scheme, developed from the rank minimization method based on fitting matrices
(Bar-Yossef et al. 2011). The linear scheme leads to a novel upper bound on the
optimal information leakage …
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