Patch to discourage unencrypted key generation

[Iain Morgan]

On Thu, May 30, 2013 at 12:15:46 -0500, John Hawkinson wrote:
> Iain Morgan <imorgan at nas.nasa.gov> wrote on Thu, 30 May 2013
> at 10:13:09 -0700 in <20130530171308.GB540 at linux124.nas.nasa.gov>:
> 
> > 	- When run as non-root and using an empty password, print a
> > 	  warning message and give a simple yes/no prompt to determine
> > 	  whether or not to continue.
> 
> Why is the user (root or not) of ssh-keygen relevant here?
> 
> --jhawk at mit.edu
>   John Hawkinson

Host keys are generated as root and usually in a non-interactive manner.
Presenting a warning message in this context would just create noise and
prompting for confirmation would obviously be a problem.

I suppose an alternative would be to test if stdin ia a tty.

-- 
Iain Morgan