Secure access to encrypted data of a user terminal
US11516215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2019 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0876
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To allow access to encrypted data stored in the memory of a user terminal, the corresponding secret encryption key is stored in a secure element integrated into the user terminal and this secure element serves as a highly secure relay toward an access device to this data, used by a third party. To do so, a secure communication channel is established between the third party and the secure element. The EAC standard allows mutual authentication accompanied by the establishment of such a secure communication channel. The secure element performs an encryption conversion of the data so that the latter is protected by a session (or transport) key associated with the secure communication channel, and no longer by the initial secret key. The third party can thus access the encrypted data without even knowing the initial secret key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.