Information security apparatus and information security system

摘要

An information security apparatus that manages information in a safe and reliable manner based on a complexity of an inverse operation on a set of integers that satisfy a condition. The information security apparatus comprises a private key generating unit operable to generate a private key, a parameter receiving unit operable to receive parameters which respectively determine conditions, and a public key generating unit operable to generate, with use of the private key, public keys from sets of integers that satisfy the conditions determined by the parameters.