The Esa Event Service can be used to trigger ESP SA (ESA) events such as
acquire or expire. The incoming events are forwarded to the hydra kernel
interface for processing.
Analogous to charon-nm the charon-tkm daemon is a specialized charon
instance used in combination with the trusted key manager (TKM) written
in Ada.
The charon-tkm is basically a copy of the charon-nm code which will
register it's own TKM specific plugins.
The daemon binary is built using the gprbuild utility. This is needed
because it uses the tkm-rpc Ada library and consequently the Ada
runtime. gprbuild takes care of the complete binding and linker steps
required to properly initialize the Ada runtime.
Reto Buerki