76 lines
1.4 KiB
Plaintext
76 lines
1.4 KiB
Plaintext
/*
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* Woo-lam version from Spore, as it is in Sjouke's list
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*/
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usertype Server, SessionKey, Token, Ticket;
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secret k: Function;
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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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compromised k(Eve,Simon);
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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(A,Secret, Kab);
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claim_9(A,Niagree);
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claim_10(A,Nisynch);
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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;
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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_6(B,A, t2, { Na,Nb }Kab );
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read_7(A,B, { Nb }Kab );
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claim_11(B,Secret, Kab);
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claim_12(B,Niagree);
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claim_13(B,Nisynch);
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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_14(S,Secret, Kab);
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}
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}
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run woolamcmv.B(Alice,Bob,Simon);
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run woolamcmv.B(Alice,Bob,Simon);
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