search for: prng_cmds

...ge----- > From: Mats Andersson [mailto:mats at mindbright.se] > Sent: Tuesday, March 13, 2001 12:30 AM > To: Lewandowsky, Matt > Cc: 'Gert Doering'; J.S.Peatfield at damtp.cam.ac.uk; dwd at bell-labs.com; > openssh-unix-dev at mindrot.org > Subject: ssh through proxy (was: prng_cmds/init_rng() question/patch) > > > > Hi, > > Sorry for pushing this even further off topic but since > someone mentioned > MindTerm I couldn't resist answering :-) > > On Mon, 12 Mar 2001, Lewandowsky, Matt wrote: > > Is there anything like this atm which...

I have a need to provide ssh client binaries for use elsewhere on several platforms, some without /dev/random support. I can't assume that users will know how to install/run prngd or egd, so I was planning to rely on the builtin prng code. However this require the ssh_prng_cmds file to exist in a fixed location -- which would mean making binaries which either look for it in . or other similar hacks. To avoid this I altered entropy.c to include a copy (as a string) of the ssh_prng_cmds generated by configure and use that if the file can't be opened -- at a cost of abo...

...the other paths can be overridden in the config (or with -o), and the config file location can also be controlled from the command line (-F for ssh, -f for sshd), I can't see any good reason why the ssh-rand-helper location can't also be... [ I will then nobble ssh-rand-helper to take the prng_cmds from a user-specified source and I'll have a way to give people a small set of files to install anywhere (with a helper shell script to specify all the paths etc) ] -- Jon Peatfield, DAMTP, Computer Officer, University of Cambridge Telephone: +44 1223 3 37852 Mail: J.S.Peatfield at da...

...on SunOS 4.1.4. Happily I can say there is only one small change so I'm not going to even try to generate all the associated noise you'd expect. The function 'strtod' in entropy.c requires '#include <floatingpoint.h>' to work. Without it your entropy rate from the prng_cmds file doesn't get converted into the correcting floating-point number. The symptom shows up during the make as: ... $ ./ssh-keygen -b 1024 -f /usr/host/etc/ssh/ssh_host_key -N "" Not enough entropy in RNG SOLUTION: (mine :-) Insert '#include <floatingpoint.h>'...