2010-12-31 14:41:52 +00:00
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/*
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* From Boyd Mathuria
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*
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* To check: 3.38 or other?
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*
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*/
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2010-11-09 09:05:34 +00:00
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usertype Sessionkey;
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usertype Keypart;
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protocol gongnonce(I,R,S)
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{
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role I
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{
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fresh ni: Nonce;
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var nr: Nonce;
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fresh ki: Keypart;
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var kr: Keypart;
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send_1 (I,R, I,R,ni );
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read_3 (S,I, { S,I,R, kr, I, ni }k(I,S), nr);
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send_4 (I,S, { I,S,I, ki, R, nr }k(I,S) );
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claim_6 (I, Secret, ki);
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claim_7 (I, Secret, kr);
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claim_8 (I, Nisynch);
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claim_9 (I, Niagree);
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}
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role R
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{
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var ni: Nonce;
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fresh nr: Nonce;
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fresh kr: Keypart;
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var ki: Keypart;
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read_1 (I,R, I,R,ni );
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send_2 (R,S, I,R, nr, { R,S,R, kr, I,ni }k(R,S));
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read_5 (S,R, { S,R,I, ki, R, nr }k(R,S) );
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claim_10 (R, Secret, ki);
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claim_11 (R, Secret, kr);
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claim_12 (R, Nisynch);
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claim_13 (R, Niagree);
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}
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role S
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{
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var ni,nr: Nonce;
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var ki,kr: Keypart;
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read_2 (R,S, I,R, nr, { R,S,R, kr, I,ni }k(R,S));
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send_3 (S,I, { S,I,R, kr, I, ni }k(I,S), nr);
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read_4 (I,S, { I,S,I, ki, R, nr }k(I,S) );
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send_5 (S,R, { S,R,I, ki, R, nr }k(R,S) );
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}
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}
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