Token keys to generate cryptograms for token interactions
US11777733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Dec 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are described for managing master keys for token requestors to use in generating cryptograms such as TAVVs. A processor computer generates a first master key for a token requestor, the first master key being generated based on (a) a second master key managed by the processor computer and (b) an identifier of the token requestor. The processor computer transmits, to a token requestor computer corresponding to the token requestor, the first master key. The processor computer receives, from the token requestor computer, a request for a token. Responsive to receiving the request for the token, the processor computer transmits the token to the token requestor computer; and receives, from the token requestor computer, an authorization request message comprising the token and a cryptogram generated by the token requestor computer using the first master key and the token.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.