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.)
Steven M. Bellovin wrote:
There may be a cryptographically sound reason to
discard that much, but it's not without cost.
.
- don davis, boston
vuln-dev thread:
http://online.securityfocus.com/archive/82/298061/2002-10-28/2002-11-03/1
(thanks to tim fredenburg sending this URL to me.)
summary: programmers can obstruct dead-code elimination
in various ways:
- use the volatile attribute (but correctly);
o
enough for your application.
- don davis, boston
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does anyone know of an on-line copy of this paper?
- don davis, boston
http://www.ece.wpi.edu/research/crypt/seminar/
A New Class of Side-Channel Attacks on DES,
Prof. Christof Paar, Chair for Communication Security,
Ruhr-University Bochum, Germany
Thursday
I was just wondering if anyone knew where to get
a good explanation of Montgomery multiplication
for the non-mathematician?
here's an explanation i wrote a couple of years ago:
- don davis, boston
what's going on with montgomery reduction:
do you remember
on her group's publications page:
http://chacs.nrl.navy.mil/publications/CHACS/CRYPTOindex.html
- don davis, boston
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against md5 MACs, ie,
when md5 is used to hash a symmetric key with
the plaintext.
but, i generally tell clients to use sha-1 even
for MACs, just to avoid confusing their customers.
- don davis, boston
/~dtd/sign_encrypt/sign_encrypt7.html
- don davis, boston
http://world.std.com/~dtd
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://www.usenix.org/events/usenix01/usenix01.pdf
Citation:
Don Davis, Defective Sign Encrypt in S/MIME, PKCS#7, MOSS,
PEM, PGP, and XML. To appear in Proc. Usenix Tech. Conf. 2001,
Boston. June 25-30, 2001.
A short summary: All current secure-mail standards have a
significant cryptographic flaw
