[6428] in cryptography@c2.net mail archive
Re: small authenticator
daemon@ATHENA.MIT.EDU (staym@accessdata.com)
Wed Jan 19 14:34:08 2000
From: staym@accessdata.com
Message-ID: <38860C32.18AB@accessdata.com>
Date: Wed, 19 Jan 2000 12:10:42 -0700
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Several people have suggested using a MAC; my problem is that the
opponent can reverse-engineer the chip and find the key. I was hoping
to give the chips a public key and have it encrypt a challenge that I'll
respond to. On my side, I'd need to prevent chosen-cipehrtext attacks.
--
Mike Stay
Programmer / Crypto guy
AccessData Corp.
mailto:staym@accessdata.com
