Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6637.
Andrey Jivsov <openpgp@brainhub.org> Fri, 18 October 2013 17:11 UTC
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Date: Fri, 18 Oct 2013 10:07:23 -0700
From: Andrey Jivsov <openpgp@brainhub.org>
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Subject: Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6637.
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On 10/18/2013 01:29 AM, Werner Koch wrote: > On Fri, 18 Oct 2013 09:57, gmaxwell@gmail.com said: > >> as it is twist secure), it would make it gratuitously incompatible all >> the existing (esp fast constant time code) implementations which work >> on the X coordinate alone. > > Nope. First, there is no released OpenPGP implementation with ECC yet. One could google for "pgp command line with ecc support" and see a few hits. I clearly recall working on one product that was released. > Second, there is no incompatibiliy because it is still the same point > and actually it is faster to use because there is no need for > uncompressing. Note also that compressing is an old technique which is > is simply not used because in the Weierstrass form it is patented (till > next year). http://tools.ietf.org/html/draft-jivsov-ecc-compact-00 is based on a year 1986 method. You need an unambiguous definition for the DSA (not ECDH).
- [openpgp] Curve3617 in OpenPGP? Beyond rfc6637. Gregory Maxwell
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Jon Callas
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Gregory Maxwell
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Werner Koch
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Gregory Maxwell
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Werner Koch
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Gregory Maxwell
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... ianG
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Andrey Jivsov
- Re: [openpgp] Curve3617 in OpenPGP? Beyond rfc6... Werner Koch