openSSH: configure ciphers.

Sunil K. Vallamkonda sunil at redback.com
Wed Mar 7 10:10:54 EST 2001


Does OpenSSH use RC4 or Arcfour ?

40-bit or 128-bit RC4 ?


Thank you.

Sunil.


On Tue, 9 Jan 2001, Pekka Savola wrote:

> On Mon, 8 Jan 2001, Sunil K. Vallamkonda wrote:
> > I see that:
> > SSH uses the following ciphers for encryption:
> >  Cipher           SSH1        SSH2
> >  DES              yes         no
> >  3DES             yes         yes
> >  IDEA             yes         no
> >  Blowfish         yes         yes
> >  Twofish          no          yes
> >  Arcfour          no          yes
> >  Cast128-cbc      no          yes
> 
> Your list is a based on ssh by ssh communications, I assume.
> 
> There has never been Idea in OpenSSH due to patents.  Recent versions of
> SSHv2 also support AES aka Rijndael for SSHv2.
> 
> DES is just there for SSHv1 compability with certain SSH-enabled routers.
> Because of it's insufficient length, it has been disabled elsewhere.
> 
> There are no compile-time configuration options to toggle these on and
> off.  You can specify which to use at run time or in configuration using
> 'Cipher' and 'Ciphers'.
> 
> -- 
> Pekka Savola                  "Tell me of difficulties surmounted,
> Netcore Oy                    not those you stumble over and fall"
> Systems. Networks. Security.   -- Robert Jordan: A Crown of Swords
> 
> 
> 






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