feature - support eia0 during S1 Handover

srsenb/src/stack/rrc/rrc_bearer_cfg.cc

@@ -105,6 +105,8 @@ bool security_cfg_handler::set_security_capabilities(const asn1::s1ap::ue_securi
       case srsran::INTEGRITY_ALGORITHM_ID_EIA0:
         // Null integrity is not supported
         logger.info("Skipping EIA0 as RRC integrity algorithm. Null integrity is not supported.");
+        sec_cfg.integ_algo = srsran::INTEGRITY_ALGORITHM_ID_EIA0;
+        integ_algo_found   = true;
         break;
       case srsran::INTEGRITY_ALGORITHM_ID_128_EIA1:
         // “first bit” – 128-EIA1,

srsenb/src/stack/rrc/rrc_mobility.cc

@@ -106,7 +106,7 @@ uint16_t compute_mac_i(uint16_t                            crnti,
                                 mac_key);
       break;
     default:
-      printf("Unsupported integrity algorithm %d.", integ_algo);
+      srsran::console_stderr("ERROR: Unsupported integrity algorithm %d.\n", integ_algo);
   }
 
   uint16_t short_mac_i = (((uint16_t)mac_key[2] << 8u) | (uint16_t)mac_key[3]);