On Fri, Jun 4, 2010 at 3:17 PM, Alasdair <[email protected]> wrote: > Thanks! At the moment, if I enter: > > sage: N = 171576151 > sage: E = EllipticCurve(Integers(N),[3,-13]) > sage: P = E(2,1) > > I obtain a NotImplementedError. So I should apply this patch, or > write my own routines? (I can implement arithmetic on such curves > using projective coordinates.)
You should apply the patch. > > -Alasdair > > On Jun 5, 8:02 am, William Stein <[email protected]> wrote: >> On Fri, Jun 4, 2010 at 2:49 PM, Alasdair <[email protected]> wrote: >> > I was recently exploring the RSA elliptic curve cryptosystem of Koyama >> > et al, which uses elliptic curves defined over the ring Z_n, with >> > n=p*q (p, q both primes). Does Sage or any of its component systems >> > support arithmetic on such curves? >> >> Seehttp://trac.sagemath.org/sage_trac/ticket/1975 >> >> >> >> > Thanks, >> > Alasdair >> >> > -- >> > To post to this group, send email to [email protected] >> > To unsubscribe from this group, send email to >> > [email protected] >> > For more options, visit this group >> > athttp://groups.google.com/group/sage-support >> > URL:http://www.sagemath.org >> >> -- >> William Stein >> Professor of Mathematics >> University of Washingtonhttp://wstein.org > > -- > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
