| 摘要 |
An authentication system for authenticating a user based on data entered by the user comprises: a user registration unit for registering a conversion rule for defining a conversion method for converting a given numeral into the other numeral as the information for authenticating a user; an authentication accepting unit for accepting an authentication request from a user terminal of a user through a communication line; a numeral creating unit for creating a numeral and notifying the created numeral to a user; a conversion unit for converting the created numeral based on the conversion rule registered for the user to be authenticated; and a judging unit for receiving conversion result of the created numeral which is obtained based on the conversion rule registered for the user, from the user to be authenticated, collating the conversion result entered by the user to be authenticated with the conversion result by the conversion unit, and determining that the user to be authenticated is a user correctly registered when the both results agree.
|
