ELECTRONIC TAG SYSTEM, READER/WRITER, AND ELECTRONIC TAG

摘要

PROBLEM TO BE SOLVED: To provide an electronic tag system which is high in security without imparting unique data to every electronic tag without managing them.

SOLUTION: Rule information stored in a rule storage region 134 of an electronic tag 130 is acquired by a reader/writer 120, and the information of a partial region specified by the acquired rule information is acquired from the electronic tag 130. A keyword generation part 128 of the reader/writer 120 generates a keyword from the information of the acquired partial region, and a password generation part 129 generates a password by using the keyword. The password generated is transmitted from the reader/writer 120 to the electronic tag 130, and authenticated by an authentication part 138.

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