> And it no longer crashes. There's a little bit of luck involved in that. I use J on two computers, on one j904 works just fine but on the other doing anything at all using extended integers makes it crash.
On Thu, Feb 16, 2023 at 9:19 PM Mike Duvos <mdu...@gmail.com> wrote: > Thanks. I got j904 installed from the zips. Surprisingly, it is up to 58 > times faster doing modular exponentiation on large extended precision > integers. And it no longer crashes. > > On Thu, Feb 16, 2023 at 6:24 PM Devon McCormick <devon...@gmail.com> > wrote: > > > It's probably blank because there is no all-in-one installer for 9.04. > > Raul is correct that you have to install it from zips. > > > > On Thu, Feb 16, 2023 at 8:24 PM Raul Miller <rauldmil...@gmail.com> > wrote: > > > > > I don't know why there's a link to a non-existent all in one page. > > > > > > For now, I think you have to install it from a zip archive: > > > https://code.jsoftware.com/wiki/System/Installation/J904/Zips > > > > > > I hope this helps, > > > > > > -- > > > Raul > > > > > > On Thu, Feb 16, 2023 at 7:50 PM Mike Duvos <mdu...@gmail.com> wrote: > > > > > > > > I went to the Wiki page for j904 and clicked on the all-in-one > > installer > > > > for Windows, and it took me to a Wiki page with nothing on it. Do I > > have > > > > to install it some other way? > > > > > > > > > > > > > > > > On Thu, Feb 16, 2023 at 3:32 PM Raul Miller <rauldmil...@gmail.com> > > > wrote: > > > > > > > > > When I run (genkey 32) under j903, I get a crash. > > > > > > > > > > When I run (genkey 32) under j904, it works fine. > > > > > > > > > > A number of issues have been addressed in j904 (and it's almost > ready > > > > > for release). It might be worth upgrading. > > > > > > > > > > -- > > > > > Raul > > > > > > > > > > On Thu, Feb 16, 2023 at 6:21 PM Mike Duvos <mdu...@gmail.com> > wrote: > > > > > > > > > > > > I installed it a few weeks ago from the link in the wiki to the > > most > > > > > recent > > > > > > stable version. If I click on “about” in jqt , it says… > > > > > > > > > > > > Engine: j903/j64avx2/windows > > > > > > > > > > > > It said the beta was for “adventurous users.” > > > > > > > > > > > > Should I be running a different one? > > > > > > > > > > > > > > > > > > > > > > > > On Thu, Feb 16, 2023 at 3:01 PM Elijah Stone < > elro...@elronnd.net> > > > > > wrote: > > > > > > > > > > > > > What version of je are you running? I get innocuous results: > > > > > > > > > > > > > > genkey 32 > > > > > > > 15970092203996114281 4061548213 3932020837 > > > > > > > genkey 32 > > > > > > > 14979749644274477941 4038627851 3709118591 > > > > > > > genkey 32 > > > > > > > 15125320685289546439 3974107847 3805966337 > > > > > > > > > > > > > > If you are not running the latest beta, I suggest doing so; > among > > > other > > > > > > > things, support for extended-precision numbers was much > improved. > > > > > > > > > > > > > > On Thu, 16 Feb 2023, Mike Duvos wrote: > > > > > > > > > > > > > > > I wrote a brief J script to generate random RSA keys in > various > > > > > > > lengths. I > > > > > > > > put a copy in my Dropbox at the following URL… > > > > > > > > > > > > > > > > https://www.dropbox.com/s/0y0tpgtjtv4vvd2/rsakeys.ijs > > > > > > > > > > > > > > > > In this script is a function called “genkey” which crashes J. > > > > > > > > > > > > > > > > genkey =: 3 : 0"0 > > > > > > > > > > > > > > > > q =. p =. randprime y > > > > > > > > > > > > > > > > while. q = p > > > > > > > > > > > > > > > > do. > > > > > > > > > > > > > > > > q =. randprime y > > > > > > > > > > > > > > > > end. > > > > > > > > > > > > > > > > if. p < q > > > > > > > > > > > > > > > > do. > > > > > > > > > > > > > > > > 'p q'=. q,p > > > > > > > > > > > > > > > > end. > > > > > > > > > > > > > > > > (p*q),p,q > > > > > > > > > > > > > > > > ) > > > > > > > > > > > > > > > > randprime y returns a random prime of length y bits with the > > > upper > > > > > two > > > > > > > bits > > > > > > > > set as an extended precision integer. It seems rock solid > and > > > has > > > > > been > > > > > > > > called millions of times without issue. > > > > > > > > > > > > > > > > genkey picks a prime, p, and another prime not equal to it, > q, > > > and > > > > > swaps > > > > > > > > them if necessary so p is the larger one. It then returns a > > > vector > > > > > of > > > > > > > > length 3, consisting of p*q, p, and q. > > > > > > > > > > > > > > > > If you load this script, and type “genkey 32”, you get a “J > has > > > > > stopped > > > > > > > > working, reporting to Microsoft” dialogue box immediately. > > > > > > > > > > > > > > > > If I write another function, “keygen” which does the same > thing > > > as > > > > > > > genkey, > > > > > > > > but phrased slightly differently, it works perfectly. > > > > > > > > > > > > > > > > keygen =: 3 : 0"0 > > > > > > > > > > > > > > > > z =. '' > > > > > > > > > > > > > > > > while. 2 > #z > > > > > > > > > > > > > > > > do. > > > > > > > > > > > > > > > > z =. ~. z , randprime y > > > > > > > > > > > > > > > > end. > > > > > > > > > > > > > > > > (*/z),\:~z > > > > > > > > > > > > > > > > ) > > > > > > > > > > > > > > > > keygen 5#32 > > > > > > > > > > > > > > > > 13636890702424146503 3697445573 3688192411 > > > > > > > > > > > > > > > > 14042631972443509627 3975272443 3532495489 > > > > > > > > > > > > > > > > 15856784938324374101 4290006247 3696214883 > > > > > > > > > > > > > > > > 12482175669738327193 3743048207 3334762199 > > > > > > > > > > > > > > > > 14012721502477771067 4146478969 3379426643 > > > > > > > > > > > > > > > > > > > > > > > > I’m new to J programming, so I’m sure I’ve just done > something > > > > > dumb. Any > > > > > > > > insights would be appreciated. > > > > > > > > > > > > > > > > Thanks. > > > > > > > > > > > > > > > ---------------------------------------------------------------------- > > > > > > > > For information about J forums see > > > > > http://www.jsoftware.com/forums.htm > > > > > > > > > > ---------------------------------------------------------------------- > > > > > > > For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > > > > > > > > > > > > ---------------------------------------------------------------------- > > > > > > For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > > > ---------------------------------------------------------------------- > > > > > For information about J forums see > > http://www.jsoftware.com/forums.htm > > > > > > > > > > ---------------------------------------------------------------------- > > > > For information about J forums see > http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > > > > -- > > > > Devon McCormick, CFA > > > > Quantitative Consultant > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Omar Antolín Camarena ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
