Pipelined packet encapsulation and decapsulation for temporal key integrity protocol employing arcfour algorithm
US7697688B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a key mixing circuit, an input circuit, and a decapsulation circuit. The key mixing circuit generates N Wired Equivalent Privacy (WEP) seeds, N≧1, each based on a predetermined temporal key, a transmitter MAC address, and a predetermined start value for a Temporal Key Integrity Protocol (TKIP) Sequence Count (TSC). The input circuit receives a message including the transmitter MAC address and the predetermined start value. The key mixing circuit generates the N WEP seeds based on the message. The input circuit receives N encapsulated MAC Payload Data Units (MPDUs) each including the transmitter MAC address and one of N values for the TSC, greater than or equal to the predetermined start value. The decapsulation circuit decapsulates the N encapsulated MPDUs using one of the N WEP seeds generated based on the value for the TSC in the respective one of the N encapsulated MPDUs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.