A cryptographic unit generates/stores {HEAD ~ an asymmetric cryptographic public/private key pair} associated with {TAIL ~ each authorized BCU user} 
associated with
A cryptographic unit generates / stores { HEAD ~ an asymmetric cryptographic public / private key pair } associated with { TAIL ~ each authorized BCU user }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL