97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/**********************************************************************
|
|
* @protocol Internet Key Exchange Protocol (IKEv1)
|
|
* @reference RFC 2409,
|
|
* Boyd C. and Mathuria A., Protocols for Authentication
|
|
* and Key Agreement
|
|
* @variant Quick mode (no pfs), without optional identities
|
|
**********************************************************************/
|
|
|
|
/**
|
|
* MACRO DEFINITIONS
|
|
* Needs preprocessing by cpp before fed to scyther
|
|
*/
|
|
|
|
#define __IKEV1_QUICK_NOPFS__
|
|
#ifndef __ORACLE__
|
|
#include "common.h"
|
|
#endif
|
|
|
|
/* k(I,R)=k(R,I) equal Ka from the spec */
|
|
#define HASH1i prf(k(I,R), mid, list, Ni)
|
|
#define HASH1r prf(k(R,I), mid, list, Ni)
|
|
#define HASH2i prf(k(I,R), mid, Ni, algo, Nr)
|
|
#define HASH2r prf(k(R,I), mid, Ni, algo, Nr)
|
|
#define HASH3i prf(k(I,R), mid, Ni, Nr)
|
|
#define HASH3r prf(k(R,I), mid, Ni, Nr)
|
|
|
|
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 k(I,R) = k(R,I).
|
|
*/
|
|
protocol @executability(O) {
|
|
role O {
|
|
var mid, Ni, Nr: Nonce;
|
|
var I, R: Agent;
|
|
|
|
// msg 1
|
|
recv_!O1( O, O, {HASH1i, list, Ni}k(I,R) );
|
|
send_!O2( O, O, {HASH1r, list, Ni}k(R,I) );
|
|
|
|
// msg 2
|
|
recv_!O3( O, O, {HASH2r, algo, Nr}k(R,I) );
|
|
send_!O4( O, O, {HASH2i, algo, Nr}k(I,R) );
|
|
|
|
// msg 3
|
|
recv_!O5( O, O, {HASH3i}k(I,R) );
|
|
send_!O6( O, O, {HASH3r}k(R,I) );
|
|
|
|
}
|
|
}
|
|
|
|
|
|
protocol ikev1-quick-nopfs(I, R)
|
|
{
|
|
role I {
|
|
fresh i, Ni, Ci, mid: Nonce;
|
|
var Nr, Cr: Nonce;
|
|
|
|
send_!1( I, R, mid, {HASH1i, list, Ni}k(I,R) );
|
|
recv_!2( R, I, mid, {HASH2i, algo, Nr}k(I,R) );
|
|
claim( I, Running, R, Ni, Nr );
|
|
send_!3( I, R, mid, {HASH3i}k(I,R) );
|
|
|
|
/* SECURITY CLAIMS */
|
|
claim( I, SKR, SKi );
|
|
|
|
claim( I, Alive );
|
|
claim( I, Weakagree );
|
|
claim( I, Commit, R, Ni, Nr );
|
|
|
|
}
|
|
|
|
role R {
|
|
fresh r, Nr, Cr: Nonce;
|
|
var Ni, Ci, mid: Nonce;
|
|
|
|
recv_!1( I, R, mid, {HASH1r, list, Ni}k(R,I) );
|
|
claim( R, Running, I, Ni, Nr );
|
|
send_!2( R, I, mid, {HASH2r, algo, Nr}k(R,I) );
|
|
recv_!3( I, R, mid, {HASH3r}k(R,I) );
|
|
|
|
|
|
/* SECURITY CLAIMS */
|
|
claim( R, SKR, SKr );
|
|
|
|
claim( R, Alive );
|
|
claim( R, Weakagree );
|
|
claim( R, Commit, I, Ni, Nr );
|
|
|
|
}
|
|
}
|
|
// TODO: Incorporate into various phase 1 protocols (see spec for adaptions)
|
|
// NOTE: If incorporated in phase 1, make sure to model with and without optional identities in msg 2 & 3
|