brew install gnupg
brew install pinentry-mac

#Generating key
gpg --full-generate-key
#Checking my key
gpg --list-secret-keys --keyid-format LONG
#Copying key
gpg --armor --export 3AA5C34371567BD2
# Setting key for git
git config --global user.signingkey 3AA5C34371567BD2

nano .gnupg/gpg-agent.conf
# insert into gpg-agent
pinentry-program /usr/local/bin/pinentry-mac
# restart agent
gpgconf --kill gpg-agent