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srsLTE
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Fix bug in re-sync procedure.

This commit is contained in:
Pedro Alvarez 2020-02-25 12:53:25 +00:00
parent 469c3ad273
commit 88c7988813
1 changed files with 5 additions and 7 deletions
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12
srsepc/src/hss/hss.cc
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@ -257,6 +257,7 @@ bool hss::write_db_file(std::string db_filename)
bool hss::gen_auth_info_answer(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres)
{
m_hss_log->debug("Generating AUTH info answer\n");
hss_ue_ctx_t* ue_ctx = get_ue_ctx(imsi);
if (ue_ctx == nullptr) {
m_hss_log->console("User not found at HSS. IMSI: %015" PRIu64 "\n", imsi);
@ -459,7 +460,7 @@ bool hss::get_k_amf_opc_sqn(uint64_t imsi, uint8_t* k, uint8_t* amf, uint8_t* op
bool hss::resync_sqn(uint64_t imsi, uint8_t* auts)
{
m_hss_log->debug("Re-syncing SQN\n");
hss_ue_ctx_t* ue_ctx = get_ue_ctx(imsi);
if (ue_ctx == nullptr) {
m_hss_log->console("User not found at HSS. IMSI: %015" PRIu64 "\n", imsi);
@ -514,6 +515,7 @@ bool hss::resync_sqn_milenage(hss_ue_ctx_t* ue_ctx, uint8_t* auts)
m_hss_log->debug_hex(k, 16, "User Key : ");
m_hss_log->debug_hex(opc, 16, "User OPc : ");
m_hss_log->debug_hex(amf, 2, "User AMF : ");
m_hss_log->debug_hex(last_rand, 16, "User Last Rand : ");
m_hss_log->debug_hex(auts, 16, "AUTS : ");
m_hss_log->debug_hex(sqn_ms_xor_ak, 6, "SQN xor AK : ");
@ -529,15 +531,11 @@ bool hss::resync_sqn_milenage(hss_ue_ctx_t* ue_ctx, uint8_t* auts)
m_hss_log->debug_hex(sqn_ms, 6, "SQN MS : ");
m_hss_log->debug_hex(sqn, 6, "SQN HE : ");
m_hss_log->debug_hex(amf, 2, "AMF : ");
uint8_t mac_s_tmp[8];
for (int i = 0; i < 2; i++) {
amf[i] = 0;
}
uint8_t dummy_amf[2] = {};
srslte::security_milenage_f1_star(k, opc, last_rand, sqn_ms, amf, mac_s_tmp);
srslte::security_milenage_f1_star(k, opc, last_rand, sqn_ms, dummy_amf, mac_s_tmp);
m_hss_log->debug_hex(mac_s_tmp, 8, "MAC calc : ");
set_sqn(ue_ctx->imsi, sqn_ms);