| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new improved technique for reading and writing at high speed while allowing a reader/writer to ensure safety on data possessed by a communication device. <P>SOLUTION: When receiving an encryption key encrypted by a key identical to a common key recoded in a record section 106 from the reader/writer via an antenna 101, a control section 104 of the communication device 12 decrypts the encrypted key by the common key recorded in the record section 106. When a reading-target address, which is encrypted using a key identical to the encryption key by the reader/writer and is used to designate a data source address in the record section 106, is received from the reader/writer via the antenna 101, the control section decrypts the encrypted reading-target address by the encryption key, data recorded in an area designated by the reading-target address obtained by decryption out of an area in the record section 106 is transmitted to the reader/writer via the antenna 101. <P>COPYRIGHT: (C)2010,JPO&INPIT |
