Local Approximation of Secrecy Capacity
Résumé
This paper uses Euclidean Information Theory (EIT) to analyze the wiretap channel. We investigate a scenario of efficiently transmitting a small amount of information subject to compression and secrecy constraints. We transform the information-theoretic problem into a linear algebra problem and obtain the perturbed probability distributions such that secrecy is achievable. An approximate estimate of the secrecy capacity is obtained by solving a generalized eigenvalue problem.