Secured method for controlling the opening of lock devices from messages implementing a symmetrical encryption
US9258281B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/0023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A management site (10) generates an encrypted message by a public-key symmetrical encryption algorithm, the algorithm and the key being selected by the management site among a memorized list. The message (DKE), which includes an identifier of the encryption algorithm and key used, is transmitted to a portable device (16), which stores it. For the use, the message is transmitted to a secured module (20) that decrypts it, checks its compliance with an internal reference, and generates a digital accreditation controlling the unlocking of a lock device (18). The decryption is operated with the algorithm and the key recognized based on the identifiers of the message, selected among a list memorized by the secured module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.