Columbia crypto box
Steven M. Bellovin
smb at research.att.com
Mon Feb 10 19:29:27 EST 2003
In message <v03110705ba6dec92ddb0@[192.168.1.5]>, Bill Frantz writes:
> * Fast key setup (Forget tossing the 256 bytes of key stream.
> The designers weren't crypto engineers. Personally, I'd toss the
> first 1024.)
I reran my script assuming that the first 1024 bytes of each packet
were discarded. It triples the cost of encryption, compared to
discarding nothing.
There may be a cryptographically sound reason to discard that much, but
it's not without cost.
--Steve Bellovin, http://www.research.att.com/~smb (me)
http://www.wilyhacker.com (2nd edition of "Firewalls" book)
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