On 2011-05-21 9:12 AM, Paul Crowley wrote:
On 20/05/11 23:49, Nico Williams wrote:
What about using Shcnorr's signature scheme with ECDH? Here's DJB
talking about it in the context of his Curve25519, which uses the
discard-y point compression technique:
http://www.derkeiler.com/Newsgroups/sci.crypt/2006-08/msg01621.html
This would seem adequate to me, and should result in small signatures.
I don't see how "discard y" works here. It works for DH because x(±yB) =
±xyB = y(±xB). But for Schnorr the verifier needs sB-rnB and sB-rnB !=
sB-r(-nB). I guess it wouldn't be too expensive to try both - any
opinions on the patent status of that?
I believe that the wheel is patented, as is the idea of trying to get
around the patent by using something other than a wheel for the sort of
purposes a wheel might be used for. Should someone ever figure how to
make something other than a wheel roll, the idea of rolling non wheels
is also patented.
_______________________________________________
cryptography mailing list
[email protected]
http://lists.randombit.net/mailman/listinfo/cryptography
