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Started to remove unecesssary lookups in gen_auth_info_answer_xor

This commit is contained in:
Pedro Alvarez 2020-02-24 19:24:10 +00:00
parent 98400f65e2
commit a99ce1fc51
2 changed files with 13 additions and 13 deletions
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2
srsepc/hdr/hss/hss.h
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@ -92,8 +92,8 @@ private:
void gen_rand(uint8_t rand_[16]);
bool get_k_amf_opc_sqn(uint64_t imsi, uint8_t* k, uint8_t* amf, uint8_t* opc, uint8_t* sqn);
void gen_auth_info_answer_xor(hss_ue_ctx_t* ue_ctx, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
bool gen_auth_info_answer_milenage(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
bool gen_auth_info_answer_xor(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
bool resync_sqn_milenage(uint64_t imsi, uint8_t* auts);
bool resync_sqn_xor(uint64_t imsi, uint8_t* auts);

24
srsepc/src/hss/hss.cc
View File

@ -267,7 +267,7 @@ bool hss::gen_auth_info_answer(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, ui
bool ret = false; // FIXME
switch (ue_ctx->algo) {
case HSS_ALGO_XOR:
ret = gen_auth_info_answer_xor(imsi, k_asme, autn, rand, xres);
gen_auth_info_answer_xor(ue_ctx, k_asme, autn, rand, xres);
break;
case HSS_ALGO_MILENAGE:
ret = gen_auth_info_answer_milenage(imsi, k_asme, autn, rand, xres);
@ -331,13 +331,15 @@ bool hss::gen_auth_info_answer_milenage(uint64_t imsi, uint8_t* k_asme, uint8_t*
return true;
}
bool hss::gen_auth_info_answer_xor(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres)
void hss::gen_auth_info_answer_xor(hss_ue_ctx_t* ue_ctx, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres)
{
uint8_t k[16];
uint8_t amf[2];
uint8_t opc[16];
uint8_t sqn[6];
// Get K, AMF, OPC and SQN
uint8_t *k = ue_ctx->key;
uint8_t *amf = ue_ctx->amf;
uint8_t *opc = ue_ctx->opc;
uint8_t *sqn = ue_ctx->sqn;
// Temp variables
uint8_t xdout[16];
uint8_t cdout[8];
@ -348,9 +350,7 @@ bool hss::gen_auth_info_answer_xor(uint64_t imsi, uint8_t* k_asme, uint8_t* autn
int i = 0;
if (!get_k_amf_opc_sqn(imsi, k, amf, opc, sqn)) {
return false;
}
// Gen RAND
gen_rand(rand);
// Use RAND and K to compute RES, CK, IK and AK
@ -421,9 +421,9 @@ bool hss::gen_auth_info_answer_xor(uint64_t imsi, uint8_t* k_asme, uint8_t* autn
m_hss_log->debug_hex(autn, 8, "User AUTN: ");
set_last_rand(imsi, rand);
return true;
// Set last RAND
memcpy(ue_ctx->last_rand, rand, 16);
return;
}
bool hss::gen_update_loc_answer(uint64_t imsi, uint8_t* qci)