doc.: IEEE 802.15-05-0134-00-004b Submission March 2005 Robert Cragie, Jennic Ltd.Slide 12 Freshness checking If there is a device table entry for the originator of the frame, freshness checking is done, as there will be a corresponding saved frame counter If there is no device table entry, no freshness checking will be done and it will be assumed that all keying material can be obtained from the frame and key lookup
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