I know that $public_key has a "good" value (i.e. it is an encrypted string, some characters unprintable, that I should be able to pass to this function.

I didn't write the RSA.pm code, so I cannot tell what he was trying to do by calling ->n on the $key! I've sent the author some email, but I have no idea when/if he will respond.

What does this little button do . .<Click>; "USER HAS SIGNED OFF FOR THE DAY"