- SPORE moved into gui directory by default.

gui/Protocols/ccitt509-1.spdl

@@ -0,0 +1,46 @@
+# CCITT X.509 (1)
+#
+# Modelled after the description in the SPORE library
+# http://www.lsv.ens-cachan.fr/spore/ccittx509_1.html
+#
+# Note:
+# The attack in SPORE is not found as this is not an attack against
+# synchronisation, but an attack against the freshness of Xa and Ya
+# which can currently not be modelled in scyther
+#
+
+const pk: Function;
+secret sk: Function;
+inversekeys(pk,sk);
+usertype Timestamp;
+
+protocol ccitt509-1(I,R)
+{
+    role I
+    {
+        const Ta: Timestamp;
+        const Na,Xa,Ya: Nonce;
+        send_1(I,R, I,{Ta, Na, R, Xa,{Ya}pk(R)}sk(I));
+        # claim_2(I,Nisynch);
+        # This claim is useless as there are no preceding read events
+    }    
+    
+    role R
+    {
+        var Ta: Timestamp;
+        var Na,Xa,Ya: Nonce;
+
+        read_1(I,R, I,{Ta, Na, R, Xa,{Ya}pk(R)}sk(I));
+        claim_3(R,Nisynch);
+        # There should also be Fresh Xa and Fresh Ya claims here
+    }
+}
+
+const Alice,Bob,Eve: Agent;
+
+untrusted Eve;
+const ne: Nonce;
+const te: Timestamp;
+compromised sk(Eve);
+
+