support A5/4 in inter-BSC handover
Forward the Kc128 key to the new BSS in BSSMAP Handover Request.
Depends: Ieb6e43eef9e57281d54d4b7c63664668df5aef3e (libosmocore)
Change-Id: Id5ce995a741c8e469a50a0c46e53c06a2378bb7e
diff --git a/src/libmsc/ran_msg_a.c b/src/libmsc/ran_msg_a.c
index 106c2df..273f8dd 100644
--- a/src/libmsc/ran_msg_a.c
+++ b/src/libmsc/ran_msg_a.c
@@ -483,6 +483,7 @@
const struct tlv_p_entry *ie_aoip_transp_addr = TLVP_GET(tp, GSM0808_IE_AOIP_TRASP_ADDR);
const struct tlv_p_entry *ie_codec_list_msc_preferred = TLVP_GET(tp, GSM0808_IE_SPEECH_CODEC_LIST);
const struct tlv_p_entry *ie_call_id = TLVP_GET(tp, GSM0808_IE_CALL_ID);
+ const struct tlv_p_entry *ie_kc128 = TLVP_GET(tp, GSM0808_IE_KC_128);
const struct tlv_p_entry *ie_global_call_ref = TLVP_GET(tp, GSM0808_IE_GLOBAL_CALL_REF);
struct gsm0808_channel_type channel_type;
@@ -525,6 +526,11 @@
geran_encr.key_len = encr_info.key_len;
}
+ if (ie_kc128) {
+ memcpy(geran_encr.kc128, ie_kc128->val, 16);
+ geran_encr.kc128_present = true;
+ }
+
r->geran.chosen_encryption = &geran_encr;
}
@@ -1166,6 +1172,12 @@
n->geran.chosen_encryption->key, n->geran.chosen_encryption->key_len);
r.encryption_information.key_len = n->geran.chosen_encryption->key_len;
r.chosen_encryption_algorithm_serving = n->geran.chosen_encryption->alg_id;
+
+ if (n->geran.chosen_encryption->kc128_present) {
+ r.more_items = true;
+ memcpy(r.kc128, n->geran.chosen_encryption->kc128, sizeof(r.kc128));
+ r.kc128_present = true;
+ }
}
if (n->classmark)