scyther/gui/Protocols/IKE/ikev1-psk-m.cpp

101 lines
2.5 KiB
C++
Raw Normal View History

/**********************************************************************
* @protocol Internet Key Exchange Protocol (IKEv1)
* @reference RFC 2409,
* Boyd C. and Mathuria A., Protocols for Authentication
* and Key Agreement
* @variant Pre-shared key authentication (main mode)
**********************************************************************/
/**
* MACRO DEFINITIONS
* Needs preprocessing by cpp before fed to scyther
*/
#define __IKEV1_PSK__
#ifndef __ORACLE__
#include "common.h"
#endif
#define SKEYID prf(k(I,R),Ni,Nr)
#define HASH_Ii prf(k(I,R), Ni, Nr, g(i), Gr, Ci, Cr, list, I)
#define HASH_Ir prf(k(R,I), Ni, Nr, Gi, g(r), Ci, Cr, list, I)
#define HASH_Ri prf(k(I,R), Ni, Nr, Gr, g(i), Cr, Ci, list, R)
#define HASH_Rr prf(k(R,I), Ni, Nr, g(r), Gi, Cr, Ci, list, R)
usertype String;
const list, algo: String;
/**
* This role serves as an "oracle" to ensure the executability of the
* protocol by taking care of the problems that arise from our way of
* modelling Diffie-Hellman keys.
*/
protocol @executability(O) {
#define Gi g(i)
#define Gr g(r)
role O {
var i, r, Ni, Nr, Ci, Cr: Nonce;
var I, R: Agent;
// msg 5
recv_!O1( O, O, {I, HASH_Ii}SKi );
send_!O2( O, O, {I, HASH_Ir}SKr );
// msg 6
recv_!O3( O, O, {R, HASH_Rr}SKr );
send_!O4( O, O, {R, HASH_Ri}SKi );
}
#undef Gi
#undef Gr
}
protocol ikev1-psk-m(I, R)
{
role I {
fresh i, Ni, Ci: Nonce;
var Nr, Cr: Nonce;
var Gr: Ticket;
send_1( I, R, Ci, list );
recv_2( R, I, Ci, Cr, algo );
send_3( I, R, Ci, Cr, g(i), Ni );
recv_4( R, I, Ci, Cr, Gr, Nr );
claim( I, Running, R, Ni, Nr, g(i), Gr, Ci, Cr );
send_!5( I, R, Ci, Cr, {I, HASH_Ii}SKi );
recv_!6( R, I, Ci, Cr, {R, HASH_Ri}SKi );
/* SECURITY CLAIMS */
claim( I, SKR, SKi );
claim( I, Alive );
claim( I, Weakagree );
claim( I, Commit, R, Ni, Nr, g(i), Gr, Ci, Cr );
}
role R {
fresh r, Nr, Cr: Nonce;
var Ni, Ci: Nonce;
var Gi: Ticket;
recv_1( I, R, Ci, list );
send_2( R, I, Ci, Cr, algo );
recv_3( I, R, Ci, Cr, Gi, Ni );
send_4( R, I, Ci, Cr, g(r), Nr );
recv_!5( I, R, Ci, Cr, {I, HASH_Ir}SKr );
claim( R, Running, I, Ni, Nr, Gi, g(r), Ci, Cr );
send_!6( R, I, Ci, Cr, {R, HASH_Rr}SKr );
/* SECURITY CLAIMS */
claim( R, SKR, SKr );
claim( R, Alive );
claim( R, Weakagree );
claim( R, Commit, I, Ni, Nr, Gi, g(r), Ci, Cr );
}
}