scyther/gui/Protocols/IKE/skeme-basic.cpp
Cas Cremers 34d7cba293 Added IKE base models.
Modelers: Adrian Kyburz and Cas Cremers
2012-11-15 11:48:14 +01:00

61 lines
1.3 KiB
C++

/** HEADDOC
* @protocol SKEME
* @reference Krawczyk, H., SKEME: A Versatile Secure Key Exchange Mechanism
* for Internet,
* Boyd C. and Mathuria A., Protocols for Authentication and
* Key Agreement
* @description SKEME is a set of protocols suitable for negotiation of
* services in a general networked environment. The main
* characteristics are forward secrecy, privacy and anonymity,
* and DoS protection.
* @variant Basic mode
**/
/** MACRO DEFINITIONS
* Needs preprocessing by cpp before fed to scyther
* Note: May use the same oracles as sts
**/
#define __SKEME__
#ifndef __ORACLE__
#include "common.h"
#endif
#define Kir prf(Ni,Nr)
protocol skeme-basic(I, R)
{
role I {
fresh i, Ni: Nonce;
var Nr: Nonce;
var Gr: Ticket;
send_1( I, R, {I, Ni}pk(R), g(i) );
recv_2( R, I, {Nr}pk(I), Gr, prf(Kir, g(i), Gr, R, I) );
send_3( I, R, prf(Kir, Gr, g(i), I, R) );
/* SECURITY CLAIMS */
claim( I, SKR, SKi );
claim( I, Alive );
claim( I, Weakagree );
}
role R {
fresh r, Nr: Nonce;
var Ni: Nonce;
var Gi: Ticket;
recv_1( I, R, {I, Ni}pk(R), Gi );
send_2( R, I, {Nr}pk(I), g(r), prf(Kir, Gi, g(r), R, I) );
recv_3( I, R, prf(Kir, g(r), Gi, I, R) );
/* SECURITY CLAIMS */
claim( R, SKR, SKr );
claim( R, Alive );
claim( R, Weakagree );
}
}