Change in osmo-ttcn3-hacks[master]: msc: f_mm_auth(): Add support for UMTS AKA

Harald Welte gerrit-no-reply at lists.osmocom.org
Mon Apr 22 12:07:10 UTC 2019


Harald Welte has uploaded this change for review. ( https://gerrit.osmocom.org/13736


Change subject: msc: f_mm_auth(): Add support for UMTS AKA
......................................................................

msc: f_mm_auth(): Add support for UMTS AKA

Change-Id: Id57adcebd63a06cfa555824e493561fe08f13d6d
---
M msc/BSC_ConnectionHandler.ttcn
1 file changed, 28 insertions(+), 8 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/36/13736/1

diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 4534a9b..e408f82 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -75,7 +75,8 @@
 	boolean mm_info,
 	boolean sgsap_enable,
 	boolean gsup_enable,
-	integer ran_idx
+	integer ran_idx,
+	boolean use_umts_aka
 };
 
 /* get a one-octet bitmaks of supported algorithms based on Classmark information */
@@ -293,15 +294,34 @@
 function f_mm_auth() runs on BSC_ConnHdlr
 {
 	if (g_pars.net.expect_auth) {
-		g_pars.vec := f_gen_auth_vec_2g();
-		var GSUP_IE auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G(g_pars.vec.rand,
-									 g_pars.vec.sres,
-									 g_pars.vec.kc));
+		var GSUP_IE auth_tuple;
 		GSUP.receive(tr_GSUP_SAI_REQ(g_pars.imsi));
-		GSUP.send(ts_GSUP_SAI_RES(g_pars.imsi, auth_tuple));
 
-		BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_MM_AUTH_REQ(g_pars.vec.rand)));
-		BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MT_MM_AUTH_RESP_2G(g_pars.vec.sres)));
+		if (g_pars.use_umts_aka) {
+			g_pars.vec := f_gen_auth_vec_3g();
+			auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G3G(g_pars.vec.rand,
+									g_pars.vec.sres,
+									g_pars.vec.kc,
+									g_pars.vec.ik,
+									g_pars.vec.ck,
+									g_pars.vec.autn,
+									g_pars.vec.res));
+			GSUP.send(ts_GSUP_SAI_RES(g_pars.imsi, auth_tuple));
+
+			BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_MM_AUTH_REQ_3G(g_pars.vec.rand, g_pars.vec.autn)));
+			var OCT4 res := substr(g_pars.vec.res, 0, 4);
+			var OCT4 xres := substr(g_pars.vec.res, 4, 4);
+			BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MT_MM_AUTH_RESP_3G(res, xres)));
+		} else {
+			g_pars.vec := f_gen_auth_vec_2g();
+			auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G(g_pars.vec.rand,
+									g_pars.vec.sres,
+									g_pars.vec.kc));
+			GSUP.send(ts_GSUP_SAI_RES(g_pars.imsi, auth_tuple));
+
+			BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_MM_AUTH_REQ(g_pars.vec.rand)));
+			BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MT_MM_AUTH_RESP_2G(g_pars.vec.sres)));
+		}
 	}
 }
 

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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Id57adcebd63a06cfa555824e493561fe08f13d6d
Gerrit-Change-Number: 13736
Gerrit-PatchSet: 1
Gerrit-Owner: Harald Welte <laforge at gnumonks.org>
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