Methods and devices for conducting payment transactions

US11488151B2 · kind B2 · utility

Assignee

• GIESECKE+DEVRIENT MOBILE SECURITY GMBH · DE

Inventors

• Matthias Besch · Munich, DE
• Xiaomin Li · Shanghai, CN
• Xiaodong Zhang · Pittsburgh, US

Key dates

• Filing date: Jun 12, 2015
• Grant date: Nov 1, 2022
• Expiry date: Jan 9, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L9/50
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

Methods and devices for of conducting a payment transaction between a mobile terminal and a payment terminal in communication with a payment backend system involve: (a) sending a unique mobile terminal identifier from the mobile terminal to the payment backend system; (b) returning a cryptogram from the payment backend system to the mobile terminal, wherein the cryptogram comprises a unique transaction identifier in encrypted form; (c) transforming the cryptogram into a proximity payment token such that the proximity payment token contains the unique transaction identifier in encrypted form and transmitting the proximity payment token to the payment terminal via a proximity communication channel; (d) forwarding a transaction record including the unique transaction identifier in encrypted form and the amount of the payment transaction from the payment terminal to the payment backend system; and (e) decrypting the unique transaction data identifier in encrypted form and processing the payment transaction.