scyther/spdl/bkepk-ce.spdl

60 lines
1.1 KiB
Plaintext
Raw Normal View History

2004-02-20 11:37:28 +00:00
/*
Bilateral Key Exchange with Public Key protocol (BKEPK)
Version from Corin/Etalle: An Improved Constraint-Based System for the Verification of Security Protocols.
Tried to stay as close as possible to compare timing results.
*/
const pk,hash: Function;
secret sk: Function;
inversekeys (pk,sk);
protocol bkepk(A,B,testnonce)
{
role B
{
const nb: Nonce;
var na: Nonce;
var kab: Key;
send_1 (B,A, B,{ nb,B }pk(A) );
read_2 (A,B, { hash(nb),na,A,kab }pk(B) );
send_3 (B,A, { hash(na) }kab );
}
role A
{
var nb: Nonce;
const na: Nonce;
const kab: Key;
read_1 (B,A, B,{ nb,B }pk(A) );
send_2 (A,B, { hash(nb),na,A,kab }pk(B) );
read_3 (B,A, { hash(na) }kab );
}
role testnonce
{
var n: Nonce;
read_4 (A,A, n);
}
}
const Alice,Bob,Eve;
compromised sk(Eve);
run bkepk.A(Alice,Bob,Alice);
run bkepk.A(Alice,Bob,Alice);
run bkepk.A(Alice,Bob,Alice);
run bkepk.B(Bob,Alice,Alice);
run bkepk.B(Bob,Alice,Alice);
run bkepk.B(Bob,Alice,Alice);
run bkepk.testnonce(Alice,Bob,Alice);
run bkepk.testnonce(Alice,Bob,Alice);
run bkepk.testnonce(Alice,Bob,Alice);