I recently ran into an issue where I was having problems creating a new set of GPG keys on a CentOS host that I was using. Here is the process that eventually worked for me.
1. Run the following gpg-agent command:
gpg-agent --daemon --use-standard-socket --pinentry-program /usr/bin/pinentry-curses
2. Run the following rngd command to ensure there is enough entropy being generated:
sudo rngd -r /dev/urandom
3. Finally run the gpg command to generate the key:
gpg --gen-key
If you are running the gpg-agent as root you may run into other issue that prevent you from completing the process. It is best to run as a non-root user.
Nate
