cellular-infrastructure
/
osmo-msc
mirror of https://gerrit.osmocom.org/osmo-msc
9
0
Fork 0
Code Issues Releases Wiki Activity

IuPS: dev hack: init hardcoded Ki on ATT REQ 

DEVELOPMENT HACK: Our current HLR does not support 3G authentication tokens.  A
new HLR/VLR implementation is being developed. Until it is ready and actual
milenage authentication is properly supported, we are hardcoding a fixed Ki and
use 2G auth.

Change-Id: Ieca45960fa941a3a706c6e479b04b9f2ef89d860
This commit is contained in:
Daniel Willmann 2016-05-21 00:31:12 +02:00 committed by Neels Hofmeyr
parent 7bc6986f6b
commit 770f3e32e0
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
openbsc/src/gprs/gprs_gmm.c
View File

@ -42,6 +42,7 @@
#include <osmocom/core/signal.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/crypt/auth.h>
#include <osmocom/gsm/apn.h>
#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
@ -1039,6 +1040,34 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
ctx->ra = ra_id;
if (ctx->ran_type == MM_CTX_T_GERAN_Gb)
ctx->gb.cell_id = cid;
else if (ctx->ran_type == MM_CTX_T_UTRAN_Iu) {
/* DEVELOPMENT HACK: Our current HLR does not support 3G
* authentication tokens. A new HLR/VLR implementation is being
* developed. Until it is ready and actual milenage
* authentication is properly supported, we are hardcoding a
* fixed Ki and use 2G auth. */
unsigned char tmp_rand[16];
/* Ki 000102030405060708090a0b0c0d0e0f */
struct osmo_sub_auth_data auth = {
.type = OSMO_AUTH_TYPE_GSM,
.algo = OSMO_AUTH_ALG_COMP128v1,
.u.gsm.ki = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f
},
};
/* XXX: Hack to make 3G auth work with special SIM card */
ctx->auth_state = SGSN_AUTH_AUTHENTICATE;
RAND_bytes(tmp_rand, 16);
memset(&ctx->auth_triplet.vec, 0, sizeof(ctx->auth_triplet.vec));
osmo_auth_gen_vec(&ctx->auth_triplet.vec, &auth, tmp_rand);
ctx->auth_triplet.key_seq = 0;
}
/* Update MM Context with other data */
ctx->drx_parms = drx_par;
ctx->ms_radio_access_capa.len = ms_ra_acc_cap_len;