Method and apparatus for providing replay protection in systems using group security associations
US8687485B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2004 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | May 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/166
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is disclosed which enables detection of undesired packets received at a device in a network, where the device is a member of a group of devices in the network. A registration table stores transform identifiers for each member of a group and controls the forwarding of the transform identifiers to the members of the group as members are added and deleted. A transform identifier indicates a format or transformation of a packet transmitted by an associated member. The transform identifier can therefore be used at a receiving device to distinguish between transmissions by different members of the group, thereby enabling the receiving device to extract sequence information associated with the member from the packet. The sequence information can be compared against an expected sequence number for the member to determine whether the packet is an undesirable or rogue packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.