An entry containing the attributes associated with a GDOI KEK
Policy/SA, uniquely identified by the Group ID, Key Server
ID, & SPI value assigned by the given Key Server to the KEK.
There will be at least one KEK Policy/SA entry for each Key
Server & two KEK Policy/SA entries for a given Key Server
only during a KEK rekey when a new KEK is created/installed.
The KEK SPI is unique for every KEK for a given Key Server.