At 03:16 AM 7/17/2006, Hannes Tschofenig wrote:
Hi Lakshminath,

this would make the design more difficult.

There is almost no performance penality of having two MACs.

I disagree in this case. Unless there is a strong need to have separate MAC protection for the Protected data payload, I think the second MAC is spurious and comes only as a side effect of the use of a combined mode algorithm. Surely that's not a justification for adding 96 or so bits to the GPSK messages.

Lakshminath


Ciao
Hannes

Lakshminath Dondeti wrote:
My reading of the GPSK draft is that the Protected Payload data will be integrity protected using the MAC from the combined mode and there is the integrity checksum over the entire GPSK-Message. I think we should avoid the multiple MACs.
Thoughts?
regards,
Lakshminath

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