Patent · US Expired

Synchronization of authentication ciphering offset

US6988197B1 · kind B1 · utility

2Cited by

2References

10Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Joakim Persson · Lund, SE
Bernard Smeets · Dalby, SE
Tobias Melin · Malmö, SE

Key dates

Filing date	Aug 4, 2000
Grant date	Jan 17, 2006
Priority date	—
Expiry date	Oct 28, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/80
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a communication system, an authentication ciphering offset (ACO) is generated as a function of one or more parameters, wherein at least one of the one or more parameters is derived from earlier-computed values of the ACO. This enables each device to avoid generating an ACO value that is out of synchronization with a counterpart ACO value generated in another communication device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.