44 lines
691 B
Plaintext
44 lines
691 B
Plaintext
|
/*
|
||
|
|
* Modeled from ISO/IEC 9798
|
||
|
|
* Modeler: Cas Cremers, Dec. 2010
|
||
|
|
*
|
||
|
|
* ccf
|
||
|
|
* unilateral
|
||
|
|
* two-pass
|
||
|
|
*
|
||
|
|
* Unidirectional key version.
|
||
|
|
*
|
||
|
|
* Modeling notes:
|
||
|
|
*
|
||
|
|
* - The keyed CCF (f_kab(x)) is modeled as f(x,kab)
|
||
|
|
*/
|
||
|
|
hashfunction f;
|
||
|
|
|
||
|
|
protocol isoiec-9798-4-2-udkey(A,B)
|
||
|
|
{
|
||
|
|
role A
|
||
|
|
{
|
||
|
|
var Rb: Nonce;
|
||
|
|
var Text1: Ticket;
|
||
|
|
fresh Text2,Text3: Ticket;
|
||
|
|
|
||
|
|
recv_1(B,A, Rb,Text1 );
|
||
|
|
claim(A,Running,B,Rb,Text2);
|
||
|
|
send_2(A,B, Text3, f( Rb, Text2, k(A,B)) );
|
||
|
|
}
|
||
|
|
role B
|
||
|
|
{
|
||
|
|
fresh Rb: Nonce;
|
||
|
|
fresh Text1: Ticket;
|
||
|
|
var Text2,Text3: Ticket;
|
||
|
|
|
||
|
|
send_1(B,A, Rb,Text1 );
|
||
|
|
recv_2(A,B, Text3, f( Rb, Text2, k(A,B)) );
|
||
|
|
|
||
|
|
claim(B,Commit,A,Rb,Text2);
|
||
|
|
claim(B,Alive);
|
||
|
|
claim(B,Weakagree);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|