| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology which respects the privacy of a user and surely performs authentication. <P>SOLUTION: When a reader/writer transmits an IDr being the ID of the reader/writer together with a request command in a step S101, a mobile device generates the encryption key of the reader/writer on the basis of the IDr in authentication data 1 generating processing in a step S202, encrypts its own ID and a random number by using the encryption key to produce data D1 being authentication data 1, and transmits the data D1 to the reader/writer in a step S203. Thereafter, the reader/writer generates data D2 being authentication data 2 on the basis of the authentication data D1 in a step S103, and the mobile device authenticates the reader/writer through reader/writer verification processing in a step S205. <P>COPYRIGHT: (C)2007,JPO&INPIT |
