76 lines
1.6 KiB
Plaintext
76 lines
1.6 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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# In SPORE this protocol is not described correctly, there are in fact 2
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# different protocols (the key establishment protocol and the repeated
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# authentication protocol)
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usertype Server, SessionKey, TimeStamp, TicketKey;
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usertype ExpiredTimeStamp;
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secret k: Function;
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const Fresh: Function;
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const Compromised: Function;
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const kee: SessionKey;
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protocol neustub^Repeat(I,R,S)
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{
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fresh Kir: SessionKey;
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role I
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{
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fresh Mi: Nonce;
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var Mr: Nonce;
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var Kir: SessionKey;
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var Tr: TimeStamp;
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var Tb: Ticket;
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fresh g: Ticket;
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var h: Ticket;
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recv_!chain(R,I, { R,Tr,Kir }k(I,S), Tb);
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send_5(I,R,Mi,{I,Kir,Tr}k(R,S),g);
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recv_6(R,I,{Mi,Mr,g,h}Kir);
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send_7(I,R,{I,Mr}Kir);
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claim_I0(I,Secret, g);
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claim_I5(I,Secret, h);
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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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claim_I4(I,Empty,(Fresh,Kir));
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}
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role R
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{
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fresh Mr: Nonce;
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var Tr: TimeStamp;
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var Kir: SessionKey;
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var Mi: Nonce;
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var g: Ticket;
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fresh h: Ticket;
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recv_5(I,R,Mi,{I,Kir,Tr}k(R,S),g);
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send_6(R,I,{Mi,Mr,g,h}Kir);
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recv_7(I,R,{I,Mr}Kir);
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claim_R1(R,Secret, Kir);
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claim_R5(R,Secret, g);
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claim_R6(R,Secret, h);
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claim_R2(R,Niagree);
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claim_R3(R,Nisynch);
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claim_R4(R,Empty,(Fresh,Kir));
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}
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role S
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{
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}
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}
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