scyther/protocols/misc/woolam-pi-f.spdl

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2006-11-21 13:40:50 +00:00
/*
* Woo-lam version from Spore, Pi f
*
* Only one-way verification version
*/
usertype Server, SessionKey, Ticket;
secret k: Function;
const Alice, Bob, Charlie, Eve: Agent;
const Simon: Server;
const ne: Nonce;
const ke: SessionKey;
untrusted Eve;
compromised k(Eve,Simon);
protocol woolampif(A,B,S)
{
role A
{
var Nb: Nonce;
send_1(A,B, A);
read_2(B,A, Nb);
send_3(A,B, { A,B,Nb }k(A,S) );
}
role B
{
const Nb: Nonce;
var T: Ticket;
read_1(A,B, A);
send_2(B,A, Nb);
read_3(A,B, T);
send_4(B,S, { A,B,Nb, T }k(B,S) );
read_5(S,B, { A,B,Nb }k(B,S) );
claim_6(B,Niagree);
claim_7(B,Nisynch);
}
role S
{
var Nb: Nonce;
read_4(B,S, { A,B,Nb, { A,B,Nb }k(A,S) }k(B,S) );
send_5(S,B, { A,B,Nb }k(B,S) );
}
}
run woolampif.B(Alice,Bob,Simon);
run woolampif.B(Alice,Bob,Simon);