- Finished the protocol.
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@ -5,6 +5,8 @@ const Alice, Bob, Charlie, Eve: Agent;
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const Simon: Server;
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/* give the intruder something to work with */
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// Scyther finds an attack using basic type flaws
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const ne: Nonce;
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const ke: SessionKey;
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untrusted Eve;
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@ -14,22 +16,49 @@ const authToken: Token;
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protocol woolamcmv(A,B,S)
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{
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role A
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{
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const Na: Nonce;
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var Nb: Nonce;
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var Kab: SessionKey;
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var t1,t2;
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send_1(A,B, A,Na);
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read_2(B,A, B,Nb);
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send_3(A,B, { A,B, Na,Nb }k(A,S) );
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read_6(B,A, { B,Na,Nb,Kab }k(A,S), { Na,Nb }Kab );
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send_7(A,B, { Nb }Kab );
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claim_8(B,Secret, Kab);
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}
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role B
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{
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var Na: Nonce;
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const Nb: Nonce;
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var Kab: SessionKey;
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var t1,t2: Ticket;
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var t1,t2;
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read_1(A,B, A,Na);
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send_2(B,A, B,Nb);
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read_3(A,B, t1 );
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send_4(B,S, t1, { (A,(B,(Na,Nb))) }k(B,S) );
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read_5(S,B, t2, { (A,(Na,(Nb,Kab))) }k(B,S) );
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send_4(B,S, t1, { A,B,Na,Nb }k(B,S) );
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read_5(S,B, t2, { A,Na,Nb,Kab }k(B,S) );
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send_6(B,A, t2, { Na,Nb }Kab );
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read_7(A,B, { Nb }Kab );
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claim(B,Secret,Kab,Nb,authToken);
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claim_9(B,Secret, Kab);
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}
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role S
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{
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var Na, Nb: Nonce;
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const Kab: SessionKey;
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read_4(B,S, { A,B, Na,Nb }k(A,S), { A,B,Na,Nb }k(B,S) );
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send_5(S,B, { B,Na,Nb,Kab }k(A,S), { A,Na,Nb,Kab }k(B,S) );
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claim_10(B,Secret, Kab);
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}
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}
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