Modeling Security Protocols in CSP
	n A’s view (initiator): n Message 1  a sends to b:  a.na n Message 3  a gets from ‘j’:  {b. kab.na.nb}ServerKey(a) .{a.kab}ServerKey(b) n Message 4  a sends to b:  {a. kab}ServerKey(b) .{nb}kab n In CSP this behavior can be modeled as follows: Initiator(a,na ) =     env?b: Agent          g send.a.b.a.na          g []  (receive.J.a{b. kab.na.nb}ServerKey(a) .m                   kab e Key         g send.a.b.m.{nb}kab g Session(a,b,kab,na,nb) )                  nb e Nonce                     m e T