Patent ID: 7697688

Claim:
An apparatus for processing N encapsulated Media Access Control (MAC) Payload Data Units (MPDUs), wherein N≧1, the apparatus comprising: a key mixing circuit to generate N Wired Equivalent Privacy (WEP) seeds each based upon a predetermined temporal key, a transmitter MAC address, and a predetermined start value for a Temporal Key Integrity Protocol (TKIP) Sequence Count (TSC); an input circuit to receive the N encapsulated MPDUs, wherein each of the N encapsulated MPDUs comprises the transmitter MAC address and one of N values for the TSC, wherein each of the N values for the TSC is greater than, or equal to, the predetermined start value for the TSC; and a WEP decapsulation circuit to decapsulate each of the N encapsulated MPDUs using one of the N WEP seeds that was generated based on the value for the TSC in the respective one of the N encapsulated MPDUs; wherein before the input circuit receives the N encapsulated MPDUs, the input circuit receives a message comprising the transmitter MAC address and the predetermined start value for the TSC; and wherein the key mixing circuit generates the N WEP seeds based on the message before the input circuit receives the N encapsulated MPDUs.