Keybase.io is awesome!

But the problem was, you could not really use it for email, nor sign your Github commits, as keybase only entered a non existing email into the public key (yourname@keybase.io). But - you can change that :). You’ll need to have GNU PGP / GPG installed.

Download Private and Public Key from Keybase.io (edit Button next to Key on Profile, Export my Private Key, Key Checksum for Export of Public Key)

gpg --allow-secret-key-import --import keybase-private.key
gpg --import keybase-public.key
gpg --edit-key myname@keybase.io

then in the gnupg shell:

gpg> adduid
Real name: Full Name
Email address: myname@mymail.com
Comment: <canbeleftempty,just enter>

You’ll need to enter your Key to allow the changes.

Stay in gpg shell and do following to trust yourself (maybe not necessary):

uid myname@mymail.com
trust
5
y
save

Export your newly generated public key:

gpg --armor --export myname@mymail.com

Upload to Github for Sign (New GPG key): https://github.com/settings/keys

Upload Public Key to Keybase: https://keybase.io/myname (edit, Update my key)

You can sign now on Github with:

git commit -S -m "signed commit"

Infos taken from:

• http://superuser.com/questions/293184/one-gnupg-pgp-key-pair-two-emails
• https://blog.ochronus.com/signing-your-github-commits-with-your-keybase-io-account-7bf3efe04a10#.eqcmjf4cl
• http://stackoverflow.com/questions/22136029/how-to-display-gpg-key-details-without-importing-it