发明名称 |
RETURNING TO CHANGE IN AN ELECTRONIC PAYMENT SYSTEM |
摘要 |
The invention relates to a method of returning change to a payer in an electronic payment system. A payer determines a change return valu, generates and blinds a change return certificate, generates a first signature by signing the blinded change return certificate, and sends a message comprising the first signature to a payee. The payee forwards the message to a payment provider. The payment provider verifies the first signaure and the change return value indicated by the message, generates a blinded second signature by signing the blinded change retun certificate, and forwards the blinded second signature to the payer. The payer unblinds and verifies the blinded second signature, and forms a second payment certificate. The invention furthermore relates to a method of performing tasks of a payer and to a method of performing tasks of a payment provider in a change return transaction, to computer programs and devices therefore. |
申请公布号 |
WO0239391(A2) |
申请公布日期 |
2002.05.16 |
申请号 |
WO2001EP12299 |
申请日期 |
2001.10.24 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);WRONA, KONRAD;TRACZ, ROBERT, DANIEL |
发明人 |
WRONA, KONRAD;TRACZ, ROBERT, DANIEL |
分类号 |
G06Q20/00 |
主分类号 |
G06Q20/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|