Hi tinyos folks,
I have a question regarding the CC2420 packer layout using its in-line
secure mode.
As far as a can read from the data sheet, the frame counter and key
sequence counter is not appended to the packet, and is instead expected
to be explicit managed. This would result in a secure mode packet of the
form:
1 1 0..20 n 2,4,8 2
| FCF | DSN | Addr Info | payload | MAC | FCS |
Instead of the normally expected:
1 1 0..20 4 1 n 2,4,8 2
| FCF | DSN | Addr Info | Frame Counter | Key ID | payload | MAC | FCS |
Am i right? Does anybody have any experience with that? Can't test it
myself as I am currently not in position of such a radio.
Thanks in advance,
Morten.
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