Efficient methods for protecting identity in authenticated transmissions
US9647832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Jan 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for protecting identity in an authenticated data transmission. For example, a contactless transaction between a portable user device and an access device may be conducted without exposing the portable user device's public key in cleartext. In one embodiment, an access device may send an access device public key to a portable user device. The user device may return a blinded user device public key and encrypted user device data. The access device may determine a shared secret using the blinded user device public key and an access device private key. The access device may then decrypt the encrypted user device data using the shared secret.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.