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Markus Kuhn über DS5002FP
- To: firstname.lastname@example.org
- Subject: Markus Kuhn über DS5002FP
- From: Lutz Donnerhacke <email@example.com>
- Date: Tue, 15 Dec 1998 16:42:04 +0100
- Comment: This message comes from the debate mailing list.
- Sender: firstname.lastname@example.org
From: email@example.com (Markus Kuhn)
Subject: Re: DS5002FP Secure Micro Crypted Buses
Date: 15 Dec 1998 15:23:58 GMT
joep de rijk (firstname.lastname@example.org) wrote:
> Does anyone have information about the security features of the 8051
> compatible microprocessor chip DS5002FP (from Dallas Semiconductor)?
> Also, does anyone know about how secure this processor *really* is?
The story of how this security processor was broken with very
cheap equipment in a student lab has just appeared a few weeks ago
in IEEE TC:
Markus G. Kuhn: Cipher Instruction Search Attack on the Bus-Encryption
Security Microcontroller DS5002FP. IEEE Transactions on Computers,
Vol. 47, No. 10, October 1998, pp. 1153-1157.
I delayed the final publication for quite some time, because this
result had caused considerable panic in the credit-card terminal and
ATM industry, where this security processor is *very* widely used.
In spite of this attack, I think that bus encryption processors are
a very neat idea that we are probably going to see also in PCs some
time into the future.
Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/>