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Review of the paper The paper's goal is to offload to a server the computation of the inverse of a (non-singular) $n\times n$ matrix $X$ of (the floating-point approximation of) real numbers, while keeping $X$ and $X^{-1}$ confidential. Towards that goal, the paper's method is to draw a secret key consisting of two random permutations and $2n$ non-zero ...

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