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
