Secret Laplace noise generation device, information provision control device, secret Laplace noise generation method, and secret Laplace noise generation program

Abstract

This invention provides a secret Laplace noise generation device capable of generating Laplace noise through secure computation, an information provision control device using the same, a secret Laplace noise generation method, and a secret Laplace noise generation program. [Solution] One embodiment of a secret Laplace noise generation device comprises a uniform random number generation unit, a real number calculation unit, a logarithmic calculation unit, a coefficient calculation unit, and a multiplication unit. The uniform random number generation unit generates secret values ​​of uniform random numbers by secret computation. The real number calculation unit calculates secret values ​​of real numbers for logarithmic calculation by secret computation on the secret values ​​of uniform random numbers. The logarithmic calculation unit calculates secret values ​​of logarithms for the secret values ​​of real numbers. The coefficient calculation unit calculates secret values ​​of coefficients related to the strength of the noise. The multiplication unit multiplies the secret values ​​of logarithms and the secret values ​​of coefficients to generate secret values ​​of Laplace noise.

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