When I use snapcraft create-key, it takes a long time to finish but it prints nothing to the terminal about the things it's running and the progress it's making. That's not nice for the user, you might think it's stuck, and you are left wondering why it's taking so long. elopio@ubuntu-xenial:~/snapcraft$ date lun 3 oct 12:43:07 CST 2016 elopio@ubuntu-xenial:~/snapcraft$ ./bin/snapcraft create-key Passphrase: Confirm passphrase: elopio@ubuntu-xenial:~/snapcraft$ date lun 3 oct 13:01:10 CST 2016 In addition to that, it took too long probably because it was collecting entropy. But it didn't explain that. This was on a vm that I left idle while doing something else. When I returned it was still stuck, so I used rngd to speed it up.