52 lines
748 B
Plaintext
52 lines
748 B
Plaintext
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/*
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* Needham-Schroeder protocol
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*/
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// The protocol description
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macro m1 = {ni,I}pk(R);
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macro m2 = {ni,nr}pk(I);
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macro m3 = {nr}pk(R);
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protocol ns3(I,R)
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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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send_1(I,R, m1 );
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recv_2(R,I, m2 );
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claim(I,Running,R,ni,nr);
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send_3(I,R, m3 );
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claim(I,Secret,ni);
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claim(I,Secret,nr);
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claim(I,Alive);
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claim(I,Weakagree);
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claim(I,Commit,R,ni,nr);
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claim(I,Niagree);
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claim(I,Nisynch);
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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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recv_1(I,R, m1 );
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claim(R,Running,I,ni,nr);
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send_2(R,I, m2 );
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recv_3(I,R, m3 );
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claim(R,Secret,ni);
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claim(R,Secret,nr);
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claim(R,Alive);
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claim(R,Weakagree);
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claim(R,Commit,I,ni,nr);
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claim(R,Niagree);
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claim(R,Nisynch);
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}
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}
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