Encryption key exchange process using access device
US11714885B2 · kind B2 · utility
0Cited by
228References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Dec 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Encryption key exchange processes are disclosed. A disclosed method includes initiating communication between a portable communication device including a token and a first limited use encryption key, and an access device. After communication is initiated, the portable communication device receives a second limited use key from a remote server via the access device. The portable communication device then replaces the first limited use key with the second limited use key. The second limited use key is thereafter used to create access data such as cryptograms that can be used to conduct access transactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.