56c032f4a5
- Use builtin Ticket type instead of user type - Remove remark that -m2 matching is required as it no longer is
80 lines
1.7 KiB
Plaintext
80 lines
1.7 KiB
Plaintext
# Neumann Stubblebine
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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/neumannStubblebine.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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usertype Server, SessionKey, TimeStamp, TicketKey;
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secret k: Function;
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const a, b, e: Agent;
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const s: Server;
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const ne: Nonce;
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const kee: SessionKey;
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untrusted e;
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compromised k(e,s);
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protocol neustub(I,R,S)
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{
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role I
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{
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const Ni,Mi: Nonce;
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var Nr,Mr: Nonce;
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var T: Ticket;
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var Tb: TimeStamp;
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var Kir: SessionKey;
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send_1(I,R, I, Ni);
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read_3(S,I, { R,Ni,Kir,Tb}k(I,S), T, Nr);
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send_4(I,R,T,{Nr}Kir);
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send_5(I,R,Mi,T);
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read_6(R,I,Mr,{Mi}Kir);
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send_7(I,R,{Mr}Kir);
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claim_I1(I,Secret, Kir);
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claim_I2(I,Niagree);
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claim_I3(I,Nisynch);
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}
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role R
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{
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var Ni,Mi: Nonce;
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const Nr,Mr: Nonce;
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var Kir: SessionKey;
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const Tb: TimeStamp;
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var T: Ticket;
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read_1(I,R, I, Ni);
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send_2(R,S, R, {I, Ni, Tb}k(R,S),Nr);
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read_4(I,R,{I,Kir,Tb}k(R,S),{Nr}Kir);
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read_5(I,R,Mi,T);
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send_6(R,I,Mr,{Mi}Kir);
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read_7(I,R,{Mr}Kir);
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claim_R1(R,Secret, Kir);
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claim_R2(R,Niagree);
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claim_R3(R,Nisynch);
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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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const Kir: SessionKey;
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var Tb: TimeStamp;
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read_2(R,S, R, {I,Ni,Tb}k(R,S), Nr);
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send_3(S,I, { R, Ni, Kir, Tb}k(I,S), { I,Kir,Tb}k(R,S),Nr );
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}
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}
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run neustub.A(a,b,s);
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run neustub.B(a,b,s);
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run neustub.S(a,b,s);
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