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- Added BKE variant which is used in an exercise for 2R890.

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ccremers 2005-04-04 13:50:59 +00:00
parent 73b0f8a4a5
commit 1c72acc47f
1 changed files with 62 additions and 0 deletions
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spdl/bke-variation.spdl Normal file
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/*
Bilateral Key Exchange with Public Key protocol (BKEPK)
*/
usertype Key;
const pk,hash: Function;
secret sk,unhash: Function;
inversekeys (pk,sk);
inversekeys (hash,unhash);
protocol bke(I,R)
{
role I
{
const ni: Nonce;
var nr: Nonce;
var kir: Key;
send_1 (I,R, { ni,I }pk(R) );
read_2 (R,I, { hash(ni),nr,kir }pk(I) );
send_3 (I,R, { hash(nr) }kir );
claim_4 (I, Secret, kir );
claim_5 (I, Niagree );
claim_6 (I, Nisynch );
}
role R
{
var ni: Nonce;
const nr: Nonce;
const kir: Key;
read_1 (I,R, { ni,I }pk(R) );
send_2 (R,I, { hash(ni),nr,kir }pk(I) );
read_3 (I,R, { hash(nr) }kir );
claim_7 (R, Secret, kir );
claim_8 (R, Niagree );
claim_9 (R, Nisynch );
}
}
const a,b,e: Agent;
untrusted e;
compromised sk(e);
const ne: Nonce;
run bke.I(a,Agent);
run bke.R(Agent,b);
run bke.I(a,Agent);
run bke.R(Agent,b);
run bke.I(a,Agent);
run bke.R(Agent,b);
run bke.I(a,Agent);
run bke.R(Agent,b);
run bke.I(a,Agent);
run bke.R(Agent,b);