Systems and methods for cryptographic authentication of contactless cards
US10778437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Oct 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/102
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.