github ssh audit - how to check your fingerprints
github forget to tell you how to easily check your .ssh
fingerprints. ssh-keygen -l -f id_dsa.pub
is easiest.
See https://github.com/settings/ssh/audit
ssh-keygen -l -f ~/.ssh/id_*.pub
and compare the fingerprint to the ones listed at github.
For multiple .pubs:
for p in ~/.ssh/*.pub; do ssh-keygen -l -f $p; done
For the backstory see https://github.com/rails/rails/issues/5228 where @homakov was ignored and accused of trolling, until he decided to prove the vulnerability. Bad decision apparently.
https://github.com/blog/1068-public-key-security-vulnerability-and-mitigation#comment-17266