Publickey Authentication for a domain account

[Shawn Marriott]

Howdy,

Is there any way to do Publickey Authentication for a domain account 
with Cygwins port of OpenSSH?

The situation I am in is as such;

    There is a website that allows users to re/set their passwords 
provide they answer some questions.
    The users new plaintext password is stored in file and transfered 
off the webserver using scp
    A domain controller receives the file, and sets the users password 
to the new one.

Currently a Username/Password pair is used to authenticate scp from the 
webserver to the domain controller,
we would like to use Username/Publickey pair to authenticate.

My preliminary reading suggests that this may not be possible.
Is this the case?

-Shawn
   
   

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