Global Patent Index - EP 1257974 A1

EP 1257974 A1 2002-11-20 - METHOD OF AUTHENTICATING A TAG

Title (en)

METHOD OF AUTHENTICATING A TAG

Title (de)

VERFAHREN ZUM AUTHENTIFIZIEREN VON ETIKETTEN

Title (fr)

PROCEDE D'AUTHENTIFICATION D'UNE ETIQUETTE

Publication

EP 1257974 A1 (EN)

Application

EP 00936230 A

Priority

  • US 0014191 W
  • US 49890200 A

Abstract (en)

[origin: WO0157807A1] A method is disclosed for authenticating, for example, radio frequency identification (RFID) tags by providing an RFID tag having a stored security block that is cryptographically related to the tag address, obtaining the tag address from the tag, cryptographically transforming at least the tag address and a private data set to obtain a security block, and then comparing that security block to the stored security block. If the two security blocks match, then the tag can be presumed to be authentic. Alternatively, the stored security block can be cryptographically transformed using at least a private data set to obtain a tag address, and that tag address can then be compared with the stored tag address. If the two tag addresses match, then the tag can be presumed to be authentic.

IPC 1-7 (main, further and additional classification)

G07C 9/00; G07F 7/10

IPC 8 full level (invention and additional information)

B42D 15/10 (2006.01); G06K 17/00 (2006.01); G06K 19/10 (2006.01); G07C 9/00 (2006.01); G07F 7/10 (2006.01); G09F 3/00 (2006.01); H04L 9/32 (2006.01)

CPC (invention and additional information)

G07F 7/1008 (2013.01); G06Q 20/341 (2013.01); G07C 9/00111 (2013.01); G07F 7/082 (2013.01)

Citation (search report)

See references of WO 0157807A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0157807 A1 20010809; AR 029034 A1 20030604; AU 5157600 A 20010814; BR 0017090 A 20030225; CA 2399092 A1 20010809; CN 1433558 A 20030730; EP 1257974 A1 20021120; JP 2003524242 A 20030812; MX PA02007518 A 20030128

INPADOC legal status


2009-12-31 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1052243

2004-06-02 [18W] APPLICATION WITHDRAWN

- Effective date: 20040407

2002-11-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020830

2002-11-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-11-20 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI