scyther/spdl/nsl3.spdl
2004-02-22 13:16:53 +00:00

38 lines
549 B
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const pk: Function;
secret sk: Function;
inversekeys (pk,sk);
protocol nsl3(I,R)
{
role I
{
const ni: Nonce;
var nr: Nonce;
send_1(I,R, {I,ni}pk(R) );
read_2(R,I, {ni,nr,R}pk(I) );
send_3(I,R, {nr}pk(R) );
claim(I,Secret,ni,nr);
}
role R
{
var ni: Nonce;
const nr: Nonce;
read_1(I,R, {I,ni}pk(R) );
send_2(R,I, {ni,nr,R}pk(I) );
read_3(I,R, {nr}pk(R) );
claim(I,Secret,ni,nr);
}
}
const Alice,Bob,Eve: Agent;
untrusted Eve;
const nc: Nonce;
compromised sk(Eve);
run nsl3.I(Agent,Agent);
run nsl3.R(Alice,Bob);