Global patent index - EP 1012762 A1

EP 1012762 A1 2000-06-28 - MICROPROCESSOR CARD PAYMENT SYSTEM

Title (en)

MICROPROCESSOR CARD PAYMENT SYSTEM

Title (de)

Mikroprozessor-Kartenzahlungssystem

Title (fr)

SYSTEME DE PAIEMENT PAR CARTE A MICROPROCESSEUR

Publication

EP 1012762 A1 (EN)

Application

EP 97954503 A

Priority

  • SG 9700065 W
  • SG 1996011524 A

Abstract (en)

[origin: WO9825220A1] The present invention is a system for implementing electronic payment with a tamper resistant microprocessor card (230). The microprocessor card (230) generates joint signatures under a joint digital signature scheme which derives its secret signature key from secret values (240, 250) contributes by different parties such as user, bank and service provider of electronic commerce. The joint signature is used to certify (260) the payment among other information. It follows that no one party has complete knowledge of the secret signature keys (240, 250) of the other parties; therefore, the use of joint digital signature in conjuction with microprocessor card (230) provides unprecedented security. The present invention also defines a protocol including payment, deposit, withdrawal and account opening (200) in providing added protection against potential security attacks. Above all, the protocol also supports off-line payment transactions, thus allowing transaction to be conducted scalably and economically over various forms of electronic networks, including unsecured ones.

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

G06F 17/60; G07F 7/10; H04L 9/30; H04L 9/32

IPC 8 full level (invention and additional information)

G06Q 20/00 (2012.01); G07F 7/08 (2006.01); G07F 7/10 (2006.01)

CPC (invention and additional information)

G07F 7/0866 (2013.01); G06Q 20/04 (2013.01); G06Q 20/341 (2013.01); G06Q 20/355 (2013.01); G06Q 20/363 (2013.01); G06Q 20/3825 (2013.01); G06Q 20/388 (2013.01); G06Q 20/40975 (2013.01); G07F 7/1008 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9825220 A1 19980611; AU 5893598 A 19980629; EP 1012762 A1 20000628; EP 1012762 A4 20010124; SG 64957 A1 19990525

INPADOC legal status

2005-03-30 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040928

2001-07-18 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010605

2001-01-24 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20001206

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB

2000-06-28 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990826

2000-06-28 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB