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Re: [Cfrg] draft-housley-ccm-mode-00.txt
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At 11:48 AM 8/16/2002 -0700, Gé Weijers wrote:
>In an embedded environment where space and power are very
>constrained (802.11 card) halving the space requirement and
>reducing the amount of key scheduling that needs to be performed
>can certainly be helpful. Many current generation 802.11b cards
>lose about 40% throughput when WEP is enabled. The simpler the
>better.
I can appreciate less-is-better arguments, in some absolute sense,
but I have trouble believing that even a simple card would have
trouble finding another 16 bytes for a second key. WEP devices
stored 4 keys and had the logic to find the right one to use.
[You might argue that you need multiple keys, WEP-style, but I don't
buy the number 4. If I need multiple keys for something, then I need
one key (set) per device I'm communicating with, not just a small
number of keys.]
- Carl
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