| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable change of registered password information included in a program without recompiling source code. <P>SOLUTION: An expiration date change unit 150 decomposes an installation package 160, an authentication of the package unit is called, and authentication is performed based on a hash value. A main unit of the expiration date change unit 150 is executed only when the authentication is passed. The installation package 160 includes password information in which plural components formed from a decomposed password are decentrally assigned to specific relative addresses with respect to header address. The authentication unit regenerates the password by extracting and reuniting the password components, and performs authentication by comparing the hash value of the password with a hash value of an input password. <P>COPYRIGHT: (C)2012,JPO&INPIT |
