Authentication server of a cellular telecommunication network and corresponding UICC
US11115195B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | May 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention proposes an authentication server of a cellular telecommunication network, the authentication server being arranged for generating an authentication token to be transmitted to a telecommunication terminal, the authentication token comprising a message authentication code and a sequence number, wherein the message authentication code is equal to: MACx=KIdx XOR f1(AMF,SQNx,RAND,K) with KIdx being a key index information in the form of a bias of a MAC equal to: MAC=f1(K,AMF,SQNx,RAND) with f1 being a function, K a key, RAND a random number and SQNx a sequence counter relative to a corresponding key Kx derived from the key K and KIdx, and AMF the content of an authentication management field as defined in 3GPP TS 33.102.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.