[En-Nut-Discussion] scp sftp or ssh for Ethernut (1.3 Board)

[Roland Pieper]

Dear Ralph,
thank you for that hint, about TEA.
Do you know where i can find source code?
Or can you contribute the code to the community?
Rgd´s Roland

> --- Ursprüngliche Nachricht ---
> Von: Ralph Mason <ralph.mason at telogis.com>
> An: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
> Betreff: Re: [En-Nut-Discussion] scp sftp or ssh for Ethernut (1.3 Board)
> Datum: Fri, 02 Dec 2005 08:30:37 +1300
> 
> I found that TEA works well on a AVR. For distributing keys you can use 
> RSA give your server a private key, and then encrypt a 128 bit session 
> key with the public key during programing of each device.  (A different 
> one for each device clearly!)
> 
> Then you device can tell the server it's session key, use TEA (or other 
> for the session) and there is no problem keeping hold of lists of them.
> 
> Ralph
> 
> 
> > Dear Vesa,
> > Thank you for your quick response.
> >
> > I found sources for BLOWFISH at 
> > http://www.schneier.com/blowfish-download.html
> > So i can encrypt the data before sending with ftp.
> >
> > Does anyone have a hint, where to find sources or information,
> > if i want to do it with "predistributed keys" ?
> >
> > rgdßs roland
> >
> >
> >   
> >> --- Ursprüngliche Nachricht ---
> >> Von: Clemens Kirchgatterer <c.kirchgatterer at amatic.com>
> >> An: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
> >> Betreff: Re: [En-Nut-Discussion] scp sftp or ssh for Ethernut (1.3
> Board)
> >> Datum: Thu, 1 Dec 2005 11:51:41 +0100
> >>
> >> Vesa Jääskeläinen <chaac at nic.fi> wrote:
> >>
> >>     
> >>> r.j.pieper at gmx.net wrote:
> >>>       
> >>>> Hello Everyone,
> >>>>
> >>>> does anybody know how to implement or where to find code for scp,
> >>>> sftp or ssh?
> >>>>
> >>>> Any help or hints are welcome.
> >>>>         
> >>> That might be a quite a job to implement those yourself ;), but you
> >>> can use OpenSSH as a reference:
> >>>       
> >> i think performance wise, this is not feasable. all that bignum
> >> operations in rsa are just too cpu hungry.  i would go for
> >> predistributed keys and blowfish.
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