- SPORE moved into gui directory by default.

gui/Protocols/ksl-lowe.spdl

@@ -0,0 +1,111 @@
+# Lowe modified KSL
+#
+# Modelled after the description in the SPORE library
+# http://www.lsv.ens-cachan.fr/spore/kslLowe.html
+#
+# Note:
+# According to SPORE there are no attacks on this protocol, scyther
+# finds one however. This has to be investigated further.
+
+usertype Server, SessionKey, TimeStamp, TicketKey;
+usertype ExpiredTimeStamp;
+secret k: Function;
+
+const a, b, e: Agent;
+const s: Server;
+const Fresh: Function;
+const Compromised: Function;
+
+
+const ne: Nonce;
+const kee: SessionKey;
+untrusted e;
+compromised k(e,s);
+
+protocol ksl-Lowe^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,Nc,Ma,Mb: Nonce;
+        const Kir: SessionKey;
+        const Kbb: TicketKey;
+        const Tr: ExpiredTimeStamp;
+        var I,R,S: Agent;
+
+        read_!C1(C,C,    I,R,S);
+        send_!C2(C,C,    (Ni,I),
+                        (Ni,I,Nr,R),
+                        {I,Nr,Kir}k(R,S),{Ni,R,Kir}k(I,S),
+                        {Tr,I,Kir}Kbb,Nc,{R,Ni}k(I,R),
+                        {Nc}Kir,
+                        Ma,
+                        Mb,{Ma,R}Kir,
+                        {I,Mb}Kir,
+                        Kir,
+                        Kbb
+               );
+        claim_C3(C,Empty, (Compromised,Kir));
+        claim_C4(C,Empty, (Compromised,Kbb));
+    }
+}
+
+protocol ksl-Lowe(I,R,S)
+{
+    role I
+    {
+        const Ni, Mi: Nonce;
+        var Nc, Mr: Nonce;
+        var T: Ticket;
+        var Kir: SessionKey;
+        
+        send_1(I,R, Ni, I);
+        read_4(R,I, { Ni,R,Kir }k(I,S), T, Nc, {R,Ni}Kir );
+        send_5(I,R, { Nc }Kir );
+        
+        send_6(I,R, Mi,T );
+        read_7(R,I, Mr,{Mi, R}Kir );
+        send_8(I,R, {I,Mr}Kir );
+
+        claim_I1(I,Secret, Kir);
+        claim_I2(I,Niagree);
+        claim_I3(I,Nisynch);
+        claim_I4(I,Empty, (Fresh,Kir));
+    }
+
+    role R
+    {
+        var Ni,Mi: Nonce;
+        const Nr,Nc,Mr: Nonce;
+        var Kir: SessionKey;
+        const Kbb: TicketKey;
+        const Tr: TimeStamp;
+        var T: Ticket;
+        
+        read_1(I,R, Ni, I);
+        send_2(R,S, Ni, I, Nr, R );
+        read_3(S,R, { I, Nr, Kir }k(R,S), T );
+        send_4(R,I, T, { Tr, I, Kir }Kbb, Nc, {R, Ni}Kir );
+        read_5(I,R, { Nc }Kir );
+        
+        read_6(I,R, Mi,{ Tr, I, Kir }Kbb );
+        send_7(R,I, Mr,{Mi,R}Kir );
+        read_8(I,R, {I,Mr}Kir );
+
+        claim_R1(R,Secret, Kir);
+        claim_R2(R,Niagree);
+        claim_R3(R,Nisynch);
+        claim_R4(R,Empty, (Fresh,Kir));
+    }
+
+    role S
+    {
+        var Ni, Nr: Nonce;
+        const Kir: SessionKey;
+
+        read_2(R,S, Ni, I, Nr, R );
+        send_3(S,R, { I, Nr, Kir }k(R,S), { Ni,R,Kir }k(I,S) );
+    }
+}
+
+