>>>>> Alan Chandler <a...@chandlerfamily.org.uk> writes:
> (I actually have loads of these in my config file for all different
> combinations of username and host - I also tend to make different key
> pairs for each host which is why I am specifying an IdentityFile in
> each.)
Why? The asymmetric cryptography employed by SSH is there
precisely to /not/ have multiple “secrets” on the side of the
party being authenticated.
The authentication systems based on symmetric cryptography (say,
Kerberos), indeed, require the authenticated party to have a
distinct shared secret for each of the “authentication realms”
(say, Kerberos realms) it belongs to
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