tempca_d.py
tempca_d is a simple program to manage issue keypair certificates for users that lack them.
Greenpass only uses the binding of the public and private keys to identify users, and authentication of the guest is done by the delegating human.
The source for it lives in the gpcentral installation, in gpcensrc//daemons/tempca_d.py
It runs using configuration arguments specified in the greenpass prefs file.