Generating RAND

master
Pedro Alvarez 7 years ago
parent 1a8a2f738b
commit 470c815196

@ -55,8 +55,10 @@ public:
static void cleanup(void);
int init(hss_args_t *hss_args, srslte::logger* logger);
uint64_t get_sqn();
void get_sqn(uint8_t sqn[6]);
void gen_rand(uint8_t rand_[16]);
bool get_k_amf_op(uint64_t imsi, uint8_t *k, uint8_t *amf, uint8_t *op);
bool gen_auth_info_answer_milenage(uint64_t imsi, uint8_t *kasme, uint8_t *autn, uint8_t *rand, uint8_t *xres);
private:
@ -64,6 +66,7 @@ private:
virtual ~hss();
static hss *m_instance;
uint64_t m_sqn; //48 bits
srslte::byte_buffer_pool *m_pool;
/*Logs*/

@ -23,7 +23,8 @@
* and at http://www.gnu.org/licenses/.
*
*/
#include <stdlib.h> /* srand, rand */
#include <time.h> /* time */
#include <boost/thread/mutex.hpp>
#include "hss/hss.h"
@ -33,6 +34,7 @@ hss* hss::m_instance = NULL;
boost::mutex hss_instance_mutex;
hss::hss()
:m_sqn(0)
{
m_pool = srslte::byte_buffer_pool::get_instance();
return;
@ -72,27 +74,52 @@ hss::init(hss_args_t *hss_args, srslte::logger *logger)
m_hss_log.set_level(srslte::LOG_LEVEL_DEBUG);
m_hss_log.set_hex_limit(32);
srand(time(NULL));
m_hss_log.info("Initialized HSS\n");
m_hss_log.console("Initialized HSS\n");
return 0;
}
bool
hss::get_k_amf_op(uint64_t imsi, uint8_t *k, uint8_t *amf, uint8_t *op )
hss::gen_auth_info_answer_milenage(uint64_t imsi, uint8_t *kasme, uint8_t *autn, uint8_t *rand, uint8_t *xres)
{
uint8_t k[16];
uint8_t amf[2];
uint8_t op[16];
//uint8_t rand[16];
uint8_t sqn[6];
uint8_t k_tmp[16];
for(int i=0;i<8;i++)
if(!get_k_amf_op(imsi,k,amf,op))
{
k_tmp[2*i]=i;
k_tmp[2*i+1]=i;
return false;
}
gen_rand(rand);
get_sqn(sqn);
return true;
}
bool
hss::get_k_amf_op(uint64_t imsi, uint8_t *k, uint8_t *amf, uint8_t *op )
{
uint8_t k_tmp[16];
uint8_t amf_tmp[2]={0x80,0x00};
uint8_t op_tmp[16]={0x63,0xbf,0xA5,0x0E,0xE6,0x52,0x33,0x65,0xFF,0x14,0xC1,0xF4,0x5F,0x88,0x73,0x7D};
if(imsi != 1010123456789)
{
m_hss_log.console("Usernot found. IMSI: %015lu\n",imsi);
return false;
}
for(int i=0;i<8;i++)
{
k_tmp[2*i]=i;
k_tmp[2*i+1]=i;
}
m_hss_log.console("Found User %015lu\n",imsi);
memcpy(k,k_tmp,16);
memcpy(amf,amf_tmp,2);
@ -101,10 +128,25 @@ hss::get_k_amf_op(uint64_t imsi, uint8_t *k, uint8_t *amf, uint8_t *op )
return true;
}
uint64_t
hss::get_sqn( )
void
hss::get_sqn(uint8_t sqn[6])
{
return 0;
for (int i=0; i<6; i++)
{
sqn[i] = ((uint8_t *)&m_sqn)[i];
}
m_sqn++;
return; //TODO See TS 33.102, Annex C
}
void
hss::gen_rand(uint8_t rand_[16])
{
for(int i=0;i<16;i++)
{
rand_[i]=rand()%256; //Pulls on byte at a time. It's slow, but does not depend on RAND_MAX.
}
return;
}
} //namespace srsepc

@ -363,7 +363,7 @@ s1ap::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *msg
m_s1ap_log->info("User not found. IMSI %015lu\n",imsi);
return false;
}
/*

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