diff --git a/spdl/carkey-broken.spdl b/spdl/carkey-broken.spdl
new file mode 100644
index 0000000..cba0666
--- /dev/null
+++ b/spdl/carkey-broken.spdl
@@ -0,0 +1,33 @@
+const pk: Function;
+secret sk: Function;
+inversekeys (pk,sk);
+
+protocol carkeybroken(I,R)
+{
+	role I
+	{
+		const ni: Nonce;
+
+		send_1(I,R, {ni}sk(I) );
+		claim_3(I,Nisynch);
+	}	
+	
+	role R
+	{
+		var ni: Nonce;
+
+		read_1(I,R, {ni}sk(I) );
+		claim_2(R,Nisynch);
+	}
+}
+
+const Alice,Bob,Eve: Agent;
+
+untrusted Eve;
+const nc: Nonce;
+compromised sk(Eve);
+
+run carkeybroken.I(Agent,Agent);
+run carkeybroken.R(Agent,Agent);
+run carkeybroken.I(Agent,Agent);
+run carkeybroken.R(Agent,Agent);
diff --git a/spdl/carkey-ni.spdl b/spdl/carkey-ni.spdl
new file mode 100644
index 0000000..6d9245c
--- /dev/null
+++ b/spdl/carkey-ni.spdl
@@ -0,0 +1,33 @@
+const pk: Function;
+secret sk: Function;
+inversekeys (pk,sk);
+
+protocol carkeyni(I,R)
+{
+	role I
+	{
+		const ni: Nonce;
+
+		send_1(I,R, {R,ni}sk(I) );
+		claim_3(I,Nisynch);
+	}	
+	
+	role R
+	{
+		var ni: Nonce;
+
+		read_1(I,R, {R,ni}sk(I) );
+		claim_2(R,Nisynch);
+	}
+}
+
+const Alice,Bob,Eve: Agent;
+
+untrusted Eve;
+const nc: Nonce;
+compromised sk(Eve);
+
+run carkeyni.I(Agent,Agent);
+run carkeyni.R(Agent,Agent);
+run carkeyni.I(Agent,Agent);
+run carkeyni.R(Agent,Agent);
diff --git a/spdl/carkey-ni2.spdl b/spdl/carkey-ni2.spdl
new file mode 100644
index 0000000..8d40deb
--- /dev/null
+++ b/spdl/carkey-ni2.spdl
@@ -0,0 +1,35 @@
+const pk: Function;
+secret sk: Function;
+inversekeys (pk,sk);
+
+protocol carkeyni(I,R)
+{
+	role I
+	{
+		const ni: Nonce;
+
+		send_1(I,R, {R,ni}sk(I) );
+		send_2(I,R, {R,ni}sk(I) );
+		claim_5(I,Nisynch);
+	}	
+	
+	role R
+	{
+		var ni: Nonce;
+
+		read_1(I,R, {R,ni}sk(I) );
+		read_2(I,R, {R,ni}sk(I) );
+		claim_4(R,Nisynch);
+	}
+}
+
+const Alice,Bob,Eve: Agent;
+
+untrusted Eve;
+const nc: Nonce;
+compromised sk(Eve);
+
+run carkeyni.I(Agent,Agent);
+run carkeyni.R(Agent,Agent);
+run carkeyni.I(Agent,Agent);
+run carkeyni.R(Agent,Agent);
diff --git a/spdl/ns3.spdl b/spdl/ns3.spdl
index 272d968..3c250ac 100644
--- a/spdl/ns3.spdl
+++ b/spdl/ns3.spdl
@@ -12,7 +12,7 @@ protocol ns3(I,R)
 		send_1(I,R, {I,ni}pk(R) );
 		read_2(R,I, {ni,nr}pk(I) );
 		send_3(I,R, {nr}pk(R) );
-		claim(I,Secret,ni,nr);
+		claim_4(I,Secret,ni,nr);
 	}	
 	
 	role R
@@ -23,7 +23,7 @@ protocol ns3(I,R)
 		read_1(I,R, {I,ni}pk(R) );
 		send_2(R,I, {ni,nr}pk(I) );
 		read_3(I,R, {nr}pk(R) );
-		claim(R,Secret,ni,nr);
+		claim_5(R,Secret,ni,nr);
 	}
 }
 
diff --git a/spdl/nsl3.spdl b/spdl/nsl3.spdl
index 5176a4a..b74ae11 100644
--- a/spdl/nsl3.spdl
+++ b/spdl/nsl3.spdl
@@ -12,7 +12,7 @@ protocol nsl3(I,R)
 		send_1(I,R, {I,ni}pk(R) );
 		read_2(R,I, {ni,nr,R}pk(I) );
 		send_3(I,R, {nr}pk(R) );
-		claim(I,Secret,ni,nr);
+		claim_4(I,Secret,ni,nr);
 	}	
 	
 	role R
@@ -23,7 +23,7 @@ protocol nsl3(I,R)
 		read_1(I,R, {I,ni}pk(R) );
 		send_2(R,I, {ni,nr,R}pk(I) );
 		read_3(I,R, {nr}pk(R) );
-		claim(I,Secret,ni,nr);
+		claim_5(I,Secret,ni,nr);
 	}
 }