Sending a cryptogram to a POS while disconnected from a network
US11108746B2 · kind B2 · utility
3Cited by
21References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 2018 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system is configured for detecting a point of sale, receiving a personal identification number (PIN), generating a PIN based key using a message digest of the PIN, decrypting a data encryption key (DEK) using the PIN based key, and generating a DEK based dynamic key using the PIN based key. The system may also decrypt a session key using the DEK based dynamic key, generate a cryptogram from the session key, and send the cryptogram to the point of sale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.