Methods and a device for associating a first device with a second device
US8219812B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2007 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and device for device association. A user enters login and password on a first device that searches for reachable devices. The first device asks the reachable devices if they know the login, preferably by sending a salted hash of the login. The devices that know the login respond positively and the first device lists the responding devices. The first device then successively performs Secure Remote Authentication (SRP) with each device on the list until an authentication succeeds or there are no further devices on the list. The SRP authentication makes sure that the first device knows the login and that the other device knows a password verifier without transmitting any knowledge that allows recuperation of this info by an eavesdropper. The authenticated devices then establish a secure channel over which a community secret key is transferred, and the first device also calculates and stores the password verifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.