Fwd: [widgets] T-Mobile's comments on ECDSA

Frederick - re the XML Signature algorithms vis-à-vis the Widgets 1.0  
Digital Signature spec [1], below are comments on Elliptic Curve from  
WebApps WG member T-Mobile.

-Regards, Art Barstow

[1] <http://www.w3.org/TR/2009/WD-widgets-digsig-20090331/>


egin forwarded message:

From: "ext Hillebrand, Rainer" <Rainer.Hillebrand@t-mobile.net>
Date: March 19, 2009 6:17:37 AM EDT
To: "Barstow Art (Nokia-CIC/Boston)" <Art.Barstow@nokia.com>
Cc: public-webapps <public-webapps@w3.org>
Subject: RE: [widgets] Minutes from 25 February 2009 Widgets F2F Meeting

Dear Art,

May I give feedback on an old action item regarding the preference  
for ECDSA vs. DSA. I hope that T-Mobile's position statement is not  
too late.

T-Mobile favors ECDSA. DSA has no advantage regarding speed and  
memory consumption against the classic RSA. ECDSA improves the  
security level.

Please note that ECDSA supports prime field cases and binary field  
cases. Especially the binary field cases are covered by patents.

Due to the fact that different parameters for the elliptic curves can  
be used or are standardized, these parameters are relevant too. The  
NIST recommends fifteen elliptic curves (five prime curves and ten  
binary curves, see also http://en.wikipedia.org/wiki/ 
Elliptic_curve_cryptography). The so-called Brainpool curves are  
preferred in Germany (see also http://www.ietf.org/internet-drafts/ 
draft-lochter-pkix-brainpool-ecc-03.txt).

Best Regards,

Rainer

*************************************
T-Mobile International
Terminal Technology
Rainer Hillebrand
Head of Terminal Security
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Germany

+49 171 5211056 (My T-Mobile)
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+49 228 936 18406 (Fax)
E-Mail: rainer.hillebrand@t-mobile.net

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Received on Tuesday, 7 April 2009 21:01:40 UTC