THE STRUCTURE OF THE ENCRYPTED KEY AND THE METHOD OF STRENGTHENING SECURITY FOR FORCE-GUESSING TO A CERTIFICATE

摘要

A structure of the encrypted key and a method for strengthening the security for force-guessing to a certificate are provided to prevent the force-guessing to a certificate even though the attacker obtains the password of e-mail. A method for strengthening the security for force-guessing to a certificate is as follows. The first encryption unit assembling one or more characters or one or more numbers is inputted. The secure card has one or more index. And one or more random numbers are written in index. One or more random number is extracted from the secure card. The random number is successively inputted to the first encryption unit and the second encryption unit is inputted.