- Add session compromise to all protocols that establish a session key

spdl/SPORE/yahalom.spdl

@@ -12,6 +12,28 @@ secret k : Function;
 
 usertype Key;
 const Fresh: Function;
+const Compromised: Function;
+
+protocol yahalomSessionKeyCompromise(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: Key;
+        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)