Hi Rob, a few years back in 2008 I did this port and announced it here. But it didn't seem to get much of a grip. You will find it's source here : http://peter.turczak.de/dropbear-tfm.tgz .
Maybe it may help out someone in dire need of a faster ssh-handshake ;). Best regards, Peter On Oct 24, 2011, at 12:23 AM, Rob Landley wrote: > Where does one get such a port? (Are there instructions?) > > Rob > > On 10/23/2011 09:28 AM, Avner Flesch wrote: >> Hi, >> >> I used dropbear that was ported to tomsfastmath library(instead of tommath). >> I reduced the login delay on my machine (powerpc 8xx 50MHz) to 5 seconds! >> >> I would like to reduce the delay more. Is anyone has any idea? >> >> Thanks >> >> Avner >> >> -----Original Message----- >> *From*: Avner Flesch <[email protected] >> <mailto:avner%20flesch%20%[email protected]%3e>> >> *To*: Rob Landley <[email protected] >> <mailto:rob%20landley%20%[email protected]%3e>> >> *Cc*: Gary <[email protected] <mailto:gary%20%[email protected]%3e>>, >> [email protected] <mailto:[email protected]> >> *Subject*: Re: Long delay during login >> *Date*: Tue, 11 Oct 2011 18:05:01 +0200 >> >> Hi, >> >> I have also the same issue with dropbear version 0.53.1 on powerpc 50MHz >> 32bits the login took more then 30 seconds. >> After I updated the libtomath library to version 0.42 and libtomcrypt >> version to 1.17 >> I reduced the delay to 13 seconds. >> >> But it still not enough - after a research I found that the delay is in >> the routine "mp_exptmod_fast" from libtommath, there is a for(;;) loop >> that take a while. >> Is anyone know how can I overcome this issue? >> >> Thanks >> >> Avner >> >> -----Original Message----- >> *From*: Rob Landley <[email protected] >> <mailto:rob%20landley%20%[email protected]%3e>> >> *To*: Gary <[email protected] <mailto:gary%20%[email protected]%3e>> >> *Cc*: [email protected] <mailto:[email protected]> >> *Subject*: Re: Long delay during login >> *Date*: Sat, 01 Oct 2011 14:00:28 -0500 >> >> On 09/28/2011 01:31 PM, Gary wrote: >>> Matt Johnston <matt <at> ucc.asn.au> writes: >>> >>> On Mon, Jun 13, 2005 at 10:21:53AM +0100, Simon Rowe wrote: >>>> We're seeing a long delay when logging in using dropbear on to our >>>> embedded >>>> system (60MHz PowerPC). Looking at the debug from the client end it >>>> appears >>>> that the issue is the Diffie-Hellman key negotiation within dropbear >>>> >>>> debug1: expecting SSH2_MSG_KEXDH_REPLY >>>> >>>> [delay of about 8 seconds] >>>> >>>> Is there anything we can change to reduce this delay? >>> >>> >>> Same problem here. My bet is that it's blocking on the random >>> device. For me ssh'ng to a busy machine is fast, ssh'ng to an >>> idle machine almost always has a BIG delay. >> >> Switch from /dev/random to /dev/urandom perhaps? >> >> Rob >> >> >> >> >
