script that can be used to test keys for minimal security requirements.
A long list of people helped with this. In particular, Michael Lucas
and David Wolfskill contributed many corrections and suggestions. I
started the script based on the addkey.sh script, and David Wolfskill
worked it into something usable. After more testing, the text can
suggest using it to check keys before committing them.
Reviewed by: accounts@, postmaster@, mwl@, sbruno@, gavin@
