- Added SPORE protocols.

spdl/SPORE/yahalom.spdl

@@ -0,0 +1,84 @@
+# Yahalom
+#
+# Modelled after the description in the SPORE library
+# http://www.lsv.ens-cachan.fr/spore/yahalom.html
+#
+# Note:
+# This protocol uses a ticket so scyther will only be able to verify
+# the protocol using the ARACHNE engine (-a) 
+#
+
+secret k : Function;
+
+usertype SessionKey;
+const Fresh: Function;
+const Compromised: Function;
+
+protocol yahalom^KeyCompromise(C)
+{
+    // Read the names of 3 agents and disclose a session between them including
+    // corresponding session key to simulate key compromise
+    role C {
+        const Ni,Nr: Nonce;
+        const Kir: SessionKey;
+        var I,R,S: Agent;
+
+        read_C1(C,C,    I,R,S);
+        send_C2(C,C,    I,Ni,
+                        R,{I,Ni,Nr}k(R,S),
+                        {R,Kir,Ni,Nr}k(I,S),
+                        {I,Kir}k(R,S),
+                        {Nr}Kir,
+                        Kir
+               );
+        claim_C3(C,Empty, (Compromised,Kir));
+    }
+}
+
+
+protocol yahalom(I,R,S)
+{
+    role I
+    {
+        const Ni: Nonce;
+        var Nr: Nonce;
+        var T: Ticket;
+        var Kir: SessionKey;
+
+        send_1(I,R, I,Ni);
+        read_3(S,I, {R,Kir,Ni,Nr}k(I,S), T );
+        send_4(I,R, T, {Nr}Kir );
+
+        claim_I1(I, Secret,Kir);
+        claim_I2(I, Nisynch);
+        claim_I3(I, Empty, (Fresh,Kir));
+    }
+
+    role R
+    {
+        const Nr: Nonce;
+        var Ni: Nonce;
+        var T: Ticket;
+        var Kir: SessionKey;
+
+        read_1(I,R, I,Ni);
+        send_2(R,S, R, {I,Ni,Nr}k(R,S) );
+        read_4(I,R, {I,Kir}k(R,S) , {Nr}Kir );
+
+        claim_R1(R, Secret,Kir);
+        claim_R2(R, Nisynch);
+        claim_R3(R, Empty, (Fresh,Kir));
+    }
+
+    role S
+    {
+        const Kir: SessionKey;
+        var Ni,Nr: Nonce;
+
+        read_2(R,S, R, {I,Ni,Nr}k(R,S) );
+        send_3(S,I, {R,Kir,Ni,Nr}k(I,S), {I,Kir}k(R,S) );
+    }
+}
+
+const Alice,Bob,Simon : Agent;
+