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NSA: some work on security (for PDCP)

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- compute correct kgNB
- propagate properly NR security capabilities of an UE
  (involves: rrc, s1ap, x2ap)
This commit is contained in:
Cedric Roux
2021-02-12 16:01:37 +01:00
parent 39ab3c1e9e
commit 0b4335accc
8 changed files with 79 additions and 3 deletions
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openair2/RRC/LTE/rrc_eNB_S1AP.c
+9
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@@ -1045,6 +1045,15 @@ int rrc_eNB_process_S1AP_INITIAL_CONTEXT_SETUP_REQ(MessageDef *msg_p, const char
}
}
ue_context_p->ue_context.nr_security.ciphering_algorithms = S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).nr_security_capabilities.encryption_algorithms;
ue_context_p->ue_context.nr_security.integrity_algorithms = S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).nr_security_capabilities.integrity_algorithms;
/* let's initialize sk_counter to 0 */
ue_context_p->ue_context.nr_security.sk_counter = 0;
/* let's compute kgNB */
derive_skgNB(ue_context_p->ue_context.kenb,
ue_context_p->ue_context.nr_security.sk_counter,
ue_context_p->ue_context.nr_security.kgNB);
// in case, send the S1SP initial context response if it is not sent with the attach complete message
if (ue_context_p->ue_context.Status == RRC_RECONFIGURED) {
LOG_I(RRC, "Sending rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP, cause %ld\n", ue_context_p->ue_context.reestablishment_cause);