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allowing users to update stuff on the server

First off, please excuse the missins subject.

> let's say everything works on the server, all i need is a method to
> authenticate a user and upon successful authentication, pass the IP
> s/he used for the authentication on to a script that takes care of the
> edit.
> There exists a fake POP3 server that does exactly this (it always
> serves an empty mailbox), but it's cleartext. I would like at least
> SSL, and asymmetric authentication with certificates would be the
> best.

Then, I was thinking of SSH. Is there a way to obtain the fingerprint,
ID, or another bit of information about the RSA/DSA key used to login
to sshd? let's say I have an account dyndns which can modify
a specific zone file. I add the ssh keys from users who are allowed to
interact with dyndns to the authorized_keys file. now if i can get at
the key ID used to login, i have all that i need.


Please do not CC me! Mutt (www.mutt.org) can handle this automatically.
 .''`.     martin f. krafft <madduck@debian.org>
: :'  :    proud Debian developer, admin, and user
`. `'`
  `-  Debian - when you have better things to do than fixing a system
NOTE: The pgp.net keyservers and their mirrors are broken!
Get my key here: http://people.debian.org/~madduck/gpg/330c4a75.asc

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