APPARATUS AND METHOD FOR GENERATING SECRET KEY FOR ENCRYPTION SYSTEM BASED ON ID AND RECORDING MEDIUM STORING PROGRAM FOR EXECUTING METHOD

摘要

A secret key generation device for generating a secret key corresponding to an ID using a user ID as a public key is disclosed. An ID change unit outputs the specific element value of a discrete lognormal circulation group corresponding to the user ID when the user ID is inputted. A secret key calculation unit calculates a secret key corresponding to the user ID by calculating a discrete lognormal result value based on the specific element value of the outputted discrete lognormal circulation group. According to the present invention, specifically proposed is a method for calculating the secret key capable of guaranteeing one to one correspondence relationship between the ID and the secret key by applying a discrete lognormal calculation method, using a previous calculation table in an ID based encryption system, to the relationship.;COPYRIGHT KIPO 2014;[Reference numerals] (110) ID change unit;(120) Secret key calculation unit