Method, apparatus, and system for processing two-dimensional barcodes
US11336435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2021 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Jun 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/126
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This specification describes techniques for processing service requests. An electronic credential request including a user identifier is received from a client. An electronic credential that corresponds to the user identifier and a user public key that corresponds to the user are retrieved. A hash operation is performed on the user public key and the electronic credential by using a hash algorithm to obtain a hash value that is signed within a predetermined time period. Server signature information is generated using the hashed credential, and transmitted with the electronic credential to the client. The server signature information is cryptographically verifiable by the client and enables the client to generate a two-dimensional barcode based on the electronic credential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.