scyther/protocols/misc/splice-as.spdl
2012-06-12 23:12:14 +02:00

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usertype TimeStamp, LifeTime;
const pk: Function;
secret sk: Function;
inversekeys (pk,sk);
protocol spliceAS(C,AS,S)
{
role C
{
fresh N1,N2: Nonce;
fresh T: TimeStamp;
fresh L: LifeTime;
send_1(C,AS, C, S, N1 );
recv_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) );
recv_6(S,C, S, C, {S, N2}pk(C) );
claim_7(C, Secret, N2);
claim_9(C, Niagree);
claim_10(C, Nisynch);
}
role AS
{
var N1,N3: Nonce;
recv_1(C,AS, C, S, N1 );
send_2(AS,C, AS, {AS, C, N1, pk(S)}sk(AS) );
recv_4(S,AS, S, C, N3 );
send_5(AS,S, AS, {AS, S, N3, pk(C)}sk(AS) );
}
role S
{
fresh N3: Nonce;
var N2: Nonce;
var T: TimeStamp;
var L: LifeTime;
var ni: Nonce;
fresh nr: Nonce;
recv_3(C,S, C, S, {C, T, L, {N2}pk(S)}sk(C) );
send_4(S,AS, S, C, N3 );
recv_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);
claim_11(S, Niagree);
claim_12(S, Nisynch);
}
}