s7r:
The "Enter passphrase" request when manually calling --keygen is optional, not mandatory. If you just leave it blank and proceed it will just create an unencrypted master identity key.
I know, but that requires someone to press enter (or a dirty expect script) if you want to run that non-interactively.
Something like --nopass would be appreciated (if not there yet?).
https://trac.torproject.org/projects/tor/ticket/17603
thanks!