公开(公告)号：DE19755819C1

公开(公告)日：1999-08-26

申请号：DE19755819

申请日：1997-12-16

Applicant: IBM

Inventor： BUBLITZ HERMANN ,  NEWTH ADAM ,  LEE STEVE

IPC: G06Q20/00 ,  G07F7/08 ,  G07F19/00

公开(公告)号：DE69829635D1

公开(公告)日：2005-05-12

申请号：DE69829635

申请日：1998-10-14

Applicant: IBM

Inventor： BUBLITZ HERMANN ,  HOLLOWAY CHRIS ,  NEWTH ADAM

IPC: G07F7/08 ,  G07F7/10 ,  G07F9/08

Abstract: The protection procedure has transaction data (10) created for a transaction payment initiated by insertion of a stock chip card (4) in a read/write device (5), used for creation of cumulative data (81) for the payment procedure including all transaction data since the last data exchange with the credit settlement point (11), with a cumulative signature (82) provided for each supplement to the cumulative data using the initial value of the previous cumulative signature.

公开(公告)号：DE69829635T2

公开(公告)日：2006-06-22

申请号：DE69829635

申请日：1998-10-14

Applicant: IBM

Inventor： BUBLITZ HERMANN ,  HOLLOWAY CHRIS ,  NEWTH ADAM

IPC: G07F7/08 ,  G07F7/10 ,  G07F9/08

Abstract: The protection procedure has transaction data (10) created for a transaction payment initiated by insertion of a stock chip card (4) in a read/write device (5), used for creation of cumulative data (81) for the payment procedure including all transaction data since the last data exchange with the credit settlement point (11), with a cumulative signature (82) provided for each supplement to the cumulative data using the initial value of the previous cumulative signature.