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
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@ -7,4 +7,4 @@
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# If any interfaces have been added since the last public release: c:r:a + 1.
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# If any interfaces have been removed or changed since the last public release: c:r:0.
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#library what description / commit summary line
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libosmocore >1.5.1 A5/4 support requires new API gsm0808_create_cipher2()
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libosmocore >1.5.1 A5/4 support requires new API gsm0808_create_cipher2(), and gsm0808_handover_request.kc128
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@ -483,6 +483,7 @@ static int ran_a_decode_handover_request(struct ran_dec *ran_dec, const struct m
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const struct tlv_p_entry *ie_aoip_transp_addr = TLVP_GET(tp, GSM0808_IE_AOIP_TRASP_ADDR);
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const struct tlv_p_entry *ie_codec_list_msc_preferred = TLVP_GET(tp, GSM0808_IE_SPEECH_CODEC_LIST);
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const struct tlv_p_entry *ie_call_id = TLVP_GET(tp, GSM0808_IE_CALL_ID);
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const struct tlv_p_entry *ie_kc128 = TLVP_GET(tp, GSM0808_IE_KC_128);
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const struct tlv_p_entry *ie_global_call_ref = TLVP_GET(tp, GSM0808_IE_GLOBAL_CALL_REF);
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struct gsm0808_channel_type channel_type;
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@ -525,6 +526,11 @@ static int ran_a_decode_handover_request(struct ran_dec *ran_dec, const struct m
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geran_encr.key_len = encr_info.key_len;
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}
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if (ie_kc128) {
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memcpy(geran_encr.kc128, ie_kc128->val, 16);
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geran_encr.kc128_present = true;
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}
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r->geran.chosen_encryption = &geran_encr;
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}
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@ -1166,6 +1172,12 @@ struct msgb *ran_a_make_handover_request(struct osmo_fsm_inst *log_fi, const str
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n->geran.chosen_encryption->key, n->geran.chosen_encryption->key_len);
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r.encryption_information.key_len = n->geran.chosen_encryption->key_len;
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r.chosen_encryption_algorithm_serving = n->geran.chosen_encryption->alg_id;
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if (n->geran.chosen_encryption->kc128_present) {
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r.more_items = true;
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memcpy(r.kc128, n->geran.chosen_encryption->kc128, sizeof(r.kc128));
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r.kc128_present = true;
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}
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}
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if (n->classmark)
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