| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an IC tag system capable of executing the transmission of an access method to an IC tag and securement of data propriety of the IC tag only among proper users. <P>SOLUTION: The IC tag system is provided with: a data writer including a password ciphering part 130, a signature generation part 140 and a data write part 150 for communicating with the IC tag 30, writing data and a ciphered password to the IC tag 30 and setting an access limit to the data written to the IC tag 30 by the password; and a data reader including a password deciphering part 230, a signature verification part 240 and a data read part 250 for communicating with the IC tag 30, reading the data and the ciphered password from the IC tag 30 and canceling the access limit to the data by the deciphered password. <P>COPYRIGHT: (C)2008,JPO&INPIT |
