- Use variable type SessionKey every where instead of a combination

between Key and SessionKey
- Make KSL working again

spdl/SPORE/yahalom.spdl

@@ -10,7 +10,7 @@
 
 secret k : Function;
 
-usertype Key;
+usertype SessionKey;
 const Fresh: Function;
 const Compromised: Function;
 
@@ -20,7 +20,7 @@ protocol yahalomSessionKeyCompromise(C)
     // corresponding session key to simulate key compromise
     role C {
         const Ni,Nr: Nonce;
-        const Kir: Key;
+        const Kir: SessionKey;
         var I,R,S: Agent;
 
         read_C1(C,C,    I,R,S);
@@ -43,7 +43,7 @@ protocol yahalom(I,R,S)
         const Ni: Nonce;
         var Nr: Nonce;
         var T: Ticket;
-        var Kir: Key;
+        var Kir: SessionKey;
 
         send_1(I,R, I,Ni);
         read_3(S,I, {R,Kir,Ni,Nr}k(I,S), T );
@@ -59,7 +59,7 @@ protocol yahalom(I,R,S)
         const Nr: Nonce;
         var Ni: Nonce;
         var T: Ticket;
-        var Kir: Key;
+        var Kir: SessionKey;
 
         read_1(I,R, I,Ni);
         send_2(R,S, R, {I,Ni,Nr}k(R,S) );
@@ -72,7 +72,7 @@ protocol yahalom(I,R,S)
 
     role S
     {
-        const Kir: Key;
+        const Kir: SessionKey;
         var Ni,Nr: Nonce;
 
         read_2(R,S, R, {I,Ni,Nr}k(R,S) );