Patent ID: 7987363

Claim:
A wireless communications system comprising: a plurality of wireless communications devices with each comprising a wireless transceiver and a processor coupled thereto for transmitting and receiving communications and using a challenge-response authentication protocol; said plurality of wireless communications devices comprising a master wireless communications device and at least one slave wireless communications device; said master wireless communications device transmitting a polling message including an unencrypted portion and an initial encrypted challenge portion; said at least one slave wireless communications device transmitting a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message from said master wireless communications device; said master wireless communications device filtering out the polling reply message from among a plurality of polling reply messages including spoof polling reply messages; said master wireless communications device upon receiving the polling reply message thereafter transmitting packets to said at least one slave wireless communications device with each packet comprising a respective different subsequent encrypted challenge portion.