Read the question a little too fast, sorry.
in reply to Re^2: How to connect to unix machine from Windows and execute command
in thread How to connect to unix machine from Windows and execute command
The general security issue of passwords and keys being available to a script still holds though. Between Windows hosts there are systems already in place to facilitate authorization/authentication that's usually secure enough.
Not so if you hack together a script for doing stuff cross-platform, without a firm understanding of the risks. I'm sure you're well aware but everyone else isn't.
Time flies when you don't know what you're doing