56 lines
978 B
Plaintext
56 lines
978 B
Plaintext
# Woo and Lam Pi f
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#
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# Modelled after the description in the SPORE library
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# http://www.lsv.ens-cachan.fr/spore/wooLamPif.html
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#
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# Note:
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# This protocol uses a ticket so scyther will only be able to verify
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# the protocol using the ARACHNE engine (-a)
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#
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secret k: Function;
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protocol woolamPi-f(I,R,S)
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{
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role I
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{
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var Nr: Nonce;
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send_1(I,R, I);
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read_2(R,I, Nr);
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send_3(I,R, {I,R,Nr}k(I,S));
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}
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role R
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{
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const Nr: Nonce;
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var T: Ticket;
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read_1(I,R, I);
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send_2(R,I, Nr);
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read_3(I,R, T);
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send_4(R,S, {I, R, Nr, T}k(R,S));
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read_5(S,R, {I, R, Nr}k(R,S));
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claim_R1(R,Nisynch);
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}
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role S
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{
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var Nr: Nonce;
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read_4(R,S, {I, R, Nr,{I,R,Nr}k(I,S)}k(R,S));
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send_5(S,R, {I, R, Nr}k(R,S));
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}
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}
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const Alice,Bob,Eve,Simon: Agent;
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const Te: Ticket;
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const Ne: Nonce;
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untrusted Eve;
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compromised k(Eve,Simon);
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