Device for generating an encrypted key and method for providing an encrypted key to a receiver
US9288046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Feb 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device for generating an encrypted master key. The device comprises at least one input interface configured to receive a receiver identifier, a service provider identifier and a master key for the service provider; a memory configured to store a secret of the device; a processor configured to: process the receiver identifier using the secret to obtain a root key, process the service provider identifier using the root key to obtain a top key and process the master key using the top key to obtain an encrypted master key; and an output interface configured to output the encrypted master key. Also provided is a method for providing an encrypted master key to a receiver. An advantage is that the device can enable a new service provider to provide services to a receiver using an already deployed smartcard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.