{HEAD ~ The first computer system} later receives an encrypted response from the second computer system and processes {TAIL ~ the encrypted response} to determine whether the second computer system is authorized to access the software 
processes
{ HEAD ~ The first computer system } later receives an encrypted response from the second computer system and processes { TAIL ~ the encrypted response } to determine whether the second computer system is authorized to access the software
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH