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- Added the splice-AS protocol. The modelchecker finds an attack, but

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the arachne methods causes some problems.
This commit is contained in:
ccremers 2004-10-14 14:22:59 +00:00
parent 87a75106d1
commit dbb35a3ec9
1 changed files with 58 additions and 0 deletions
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spdl/splice-as.spdl Normal file
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const pk: Function;
secret sk: Function;
inversekeys (pk,sk);
protocol spliceAS(C,AS,S)
{
role C
{
const N1,N2: Nonce;
const T,L: Nonce;
send_1(C,AS, C, S, N1 );
read_2(AS,C, AS, {AS, C, N1, pk(S)}sk(AS) );
send_3(C,S, C, S, {C, T, L, {N2}pk(S)}sk(C) );
read_6(S,C, S, C, {S, N2}pk(C) );
claim_7(C, Secret, N2);
}
role AS
{
var N1,N3: Nonce;
read_1(C,AS, C, S, N1 );
send_2(AS,C, AS, {AS, C, N1, pk(S)}sk(AS) );
read_4(S,AS, S, C, N3 );
send_5(AS,S, AS, {AS, S, N3, pk(C)}sk(AS) );
}
role S
{
const N3: Nonce;
var N2: Nonce;
var T,L: Nonce;
var ni: Nonce;
const nr: Nonce;
read_3(C,S, C, S, {C, T, L, {N2}pk(S)}sk(C) );
send_4(S,AS, S, C, N3 );
read_5(AS,S, AS, {AS, S, N3, pk(C)}sk(AS) );
send_6(S,C, S, C, {S, N2}pk(C) );
claim_8(S, Secret, N2);
}
}
const Alice,Bob,Eve: Agent;
untrusted Eve;
const ne: Nonce;
compromised sk(Eve);
run spliceAS.C(Agent,Agent,Agent);
run spliceAS.AS(Agent,Agent,Agent);
run spliceAS.S(Agent,Agent,Agent);