Device which executes authentication processing by using offline information, and device authentication method

(19)

(11)

EP 1 465 380 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION

(48)	Corrigendum issued on:
	12.01.2005 Bulletin 2005/02

(43)	Date of publication:
	06.10.2004 Bulletin 2004/41

(21)	Application number: 04005444.7

(22)	Date of filing: 08.03.2004

(51)	International Patent Classification (IPC)⁷: H04L 29/06

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL LT LV MK

(30)

Priority:

31.03.2003 JP 2003095671

(71)	Applicant: Kabushiki Kaisha Toshiba
	Tokyo (JP)

(72)	Inventors:
	Kanazawa, Koji, c/o Toshiba Corp., Int. Prop. Div. Tokyo 105-8001 (JP) Mawatari, Masahiko,c/o Toshiba Corp.,Int.Prop.Div. Tokyo 105-8001 (JP)

(74)	Representative: Henkel, Feiler & Hänzel
	Möhlstrasse 37 81675 München 81675 München (DE)

(54)	Device which executes authentication processing by using offline information, and device authentication method

(57) A computer includes a unit (23) which reads out authentication data recorded on a portable recording medium (16) by another device(A), a recording unit (25) which records the authentication data read out by the unit, and an authentication unit (20, 32) which performs mutual authentication processing between the authentication unit and the another device (A) by using the authentication data recorded in the recording unit.