0fb7e9e24e
It is now possible to declare syntactic macros at the global level.
macro ID = TERM;
After this definition, every occurrence of ID will be replaced by TERM.
For example, this can be used to avoid duplicating message definitions
among roles:
macro M1 = { nI, I}pk(R) ;
protocol X(I,R) {
role I {
send (I,R, M1);
}
role R {
recv (I,R, M1);
}
}
52 lines
748 B
Plaintext
52 lines
748 B
Plaintext
/*
|
|
* Needham-Schroeder protocol
|
|
*/
|
|
|
|
// The protocol description
|
|
|
|
macro m1 = {ni,I}pk(R);
|
|
macro m2 = {ni,nr}pk(I);
|
|
macro m3 = {nr}pk(R);
|
|
|
|
protocol ns3(I,R)
|
|
{
|
|
role I
|
|
{
|
|
fresh ni: Nonce;
|
|
var nr: Nonce;
|
|
|
|
send_1(I,R, m1 );
|
|
recv_2(R,I, m2 );
|
|
claim(I,Running,R,ni,nr);
|
|
send_3(I,R, m3 );
|
|
|
|
claim(I,Secret,ni);
|
|
claim(I,Secret,nr);
|
|
claim(I,Alive);
|
|
claim(I,Weakagree);
|
|
claim(I,Commit,R,ni,nr);
|
|
claim(I,Niagree);
|
|
claim(I,Nisynch);
|
|
}
|
|
|
|
role R
|
|
{
|
|
var ni: Nonce;
|
|
fresh nr: Nonce;
|
|
|
|
recv_1(I,R, m1 );
|
|
claim(R,Running,I,ni,nr);
|
|
send_2(R,I, m2 );
|
|
recv_3(I,R, m3 );
|
|
|
|
claim(R,Secret,ni);
|
|
claim(R,Secret,nr);
|
|
claim(R,Alive);
|
|
claim(R,Weakagree);
|
|
claim(R,Commit,I,ni,nr);
|
|
claim(R,Niagree);
|
|
claim(R,Nisynch);
|
|
}
|
|
}
|
|
|