| 摘要 |
IN A WIRELESS NETWORK, SECURE SYNCHRONIZATION MAY BE ACHIEVED WITH TWO MESSAGES. A BEACON INITIATOR (10C) MAY PROVIDE A BEACON TIMESTAMP FIELD (16) AND A BEACON NONCE (17) TO DEVICES (10A, 10B) IN THE NETWORK. A DEVICE (10) IN THE NETWORK THAT WISHES TO SYNCHRONIZE WITH ANOTHER DEVICE (10) MAY SEND A MESSAGE CONTAINING A VARIETY OF PARAMETERS INCLUDING THE BEACON TIMESTAMP FIELD (16) AND THE NONCE (17). UPON RECEIPT, THE RECEIVING DEVICE (10) CAN CHECK A KEY INCLUDED IN THE MESSAGE, THE BEACON TIMESTAMP FIELD (16) AND THE NONCE (17) TO DETERMINE, NOT ONLY THAT THE SENDER HAS A VALID KEY, BUT THAT THE MESSAGE HAS A VALID TIME SO THAT ONE CAN BE REASONABLY SURE THAT THE MESSAGE WAS NOT SIMPLY COPIED. THE RECEIVING DEVICE (10) THEN SENDS A MESSAGE RESPONSE WHICH CONTAINS VERIFIABLE PARAMETERS TO ENABLE THE MESSAGE SENDER (10) TO BE SURE THAT THE SENDER (10) IS COMMUNICATING WITH A VALID RECEIVER (10).
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