Actually, there's a slightly earlier paper:
"CryptoGraphics: Secret Key Cryptography Using Graphics Cards"
Debra L. Cook, John Ioannidis, Angelos D. Keromytis, and Jake Luck. In
Proceedings of the RSA Conference, Cryptographer's Track (CT-RSA), pp.
334 - 350. February 2005, San Francisco, CA. An older version is
available as Columbia University Computer Science Department Technical
Report CUCS-002-04.
You can get it from
http://www1.cs.columbia.edu/~angelos/Papers/2004/gc_ctrsa.pdf
-Angelos
Steven M. Bellovin wrote:
On Wed, 24 Oct 2007 13:25:29 -0400
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
From:
<http://www.elcomsoft.com/EDPR/gpu_en.pdf>
Moscow, Russia - October 22, 2007 - ElcomSoft Co. Ltd. has
discovered and filed for a US patent...Using the "brute force"
technique of recovering passwords, it was possible, though
time-consuming, to recover passwords from popular
applications. For example...Windows Vista uses NTLM hashing
by default, so using a modern dual-core PC you could test up to
10,000,000 passwords per second, and perform a complete
analysis in about two months. With ElcomSoft's new technology,
the process would take only three to five days..Today's [GPU]
chips can process fixed-point calculations. And with as much as
1.5 Gb of onboard video memory and up to 128 processing
units, these powerful GPU chips are much more effective than
CPUs in performing many of these calculations...Preliminary
tests using Elcomsoft Distributed Password Recovery product
to recover Windows NTLM logon passwords show that the
recovery speed has increased by a factor of twenty, simply by
hooking up with a $150 video card's onboard GPU.
I hope they don't get the patent. The idea of using a GPU for
cryptographic calculations isn't new; see, for example, "Remotely Keyed
Cryptographics: Secure Remote Display Access Using (Mostly) Untrusted
Hardware" (http://www1.cs.columbia.edu/~angelos/Papers/2005/rkey_icics.pdf)
Debra L. Cook, Ricardo Baratto, and Angelos D. Keromytis. In
Proceedings of the 7th International Conference on Information and
Communications Security (ICICS), pp. 363 - 375. December 2005, Beijing,
China. An older version is available as Columbia University Computer
Science Department Technical Report CUCS-050-04
(http://mice.cs.columbia.edu/getTechreport.php?techreportID=110&format=pdf&;),
December 2004.
--Steve Bellovin, http://www.cs.columbia.edu/~smb
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