scyther/gui/Protocols/MultiProtocolAttacks/tmn.spdl
2012-04-26 16:40:01 +02:00

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# TMN
#
# Modelled after the description in the SPORE library
# http://www.lsv.ens-cachan.fr/spore/tmn.html
#
# Note:
# According to Boyd and Mathuria Kb is the session key this is not clear
# from the description in SPORE
usertype SessionKey;
const Fresh: Function;
const Compromised: Function;
protocol tmn(I,R,S)
{
role I
{
fresh Ki: SessionKey;
var Kr: SessionKey;
send_1(I,S, R,{Ki}pk(S) );
recv_4(S,I, R,{Kr}Ki );
claim_I1(I,Secret,Kr);
claim_I2(I,Nisynch);
claim_I3(I,Empty,(Fresh,Kr));
}
role R
{
fresh Kr: SessionKey;
recv_2(S,R, I );
send_3(R,S, I, { Kr }pk(S) );
claim_R1(R,Secret,Kr);
claim_R2(R,Nisynch);
claim_R3(R,Empty,(Fresh,Kr));
}
role S
{
var Ki,Kr: SessionKey;
recv_1(I,S, R,{Ki}pk(S) );
send_2(S,R, I );
recv_3(R,S, I, { Kr }pk(S) );
send_4(S,I, R,{Kr}Ki );
}
}