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1. (WO2010116666) MEMORY DEVICE, MEMORY AUTHENTICATION SYSTEM, AND MEMORY AUTHENTICATION PROGRAM

Pub. No.:    WO/2010/116666    International Application No.:    PCT/JP2010/002256
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Tue Mar 30 01:59:59 CEST 2010
IPC: G06F 21/24
G06F 21/20
G06K 17/00
G06K 19/07
G06K 19/10
H04L 9/32
Applicants: QUO CARD Co., Ltd.
株式会社クオカード
KUMAMOTO, Norichika
熊本乃親
SUGIMOTO, Takatoshi
杉本隆利
TAKAHASHI, Masashi
高橋正志
Inventors: KUMAMOTO, Norichika
熊本乃親
SUGIMOTO, Takatoshi
杉本隆利
TAKAHASHI, Masashi
高橋正志
Title: MEMORY DEVICE, MEMORY AUTHENTICATION SYSTEM, AND MEMORY AUTHENTICATION PROGRAM
Abstract:
Provided is a memory device capable of authenticating writing and reading of a semiconductor memory using an access means normally mounted on an external device. A noncontact IC card (10) which is to be read from and written to by a card processing device (20), wherein the IC card is provided with a nonvolatile memory (12) enabling reading therefrom and writing therein information only when the reading and the writing are authenticated by the card processing device (20); a data conversion register (13) enabling reading therefrom and writing therein first authentication information and second authentication information relating to the authentication; an authentication information generation unit (14a) which generates the first authentication information and writes the generated first authentication information into the data conversion register (13); and a authentication control unit (14b) which reads the second authentication information, which has been written from the card processing device (20) to the data conversion register (13), from the data conversion register (13), and performs authentication on the basis of the read-out second authentication information.