int generate_vector(uint64_t imsi, uint8_t key[16], uint8_t plmn[3],
uint8_t sqn[6], auc_vector_t *vector)
{
/* in E-UTRAN an authentication vector is composed of:
* - RAND
* - XRES
* - AUTN
* - KASME
*/
uint8_t amf[] = { 0x80, 0x00 };
uint8_t mac_a[8];
uint8_t ck[16];
uint8_t ik[16];
uint8_t ak[6];
int i;
if (vector == NULL) {
return EINVAL;
}
/* Compute MAC */
f1(key, vector->rand, sqn, amf, mac_a);
print_buffer("MAC_A : ", mac_a, 8);
print_buffer("SQN : ", sqn, 6);
print_buffer("RAND : ", vector->rand, 16);
/* Compute XRES, CK, IK, AK */
f2345(key, vector->rand, vector->xres, ck, ik, ak);
print_buffer("AK : ", ak, 6);
print_buffer("CK : ", ck, 16);
print_buffer("IK : ", ik, 16);
print_buffer("XRES : ", vector->xres, 8);
/* AUTN = SQN ^ AK || AMF || MAC */
generate_autn(sqn, ak, amf, mac_a, vector->autn);
print_buffer("AUTN : ", vector->autn, 16);
derive_kasme(ck, ik, plmn, sqn, ak, vector->kasme);
print_buffer("KASME : ", vector->kasme, 32);
return 0;
}
static
void
do_derive_kasme (
uint8_t * sn_id,
uint8_t * sqn,
uint8_t * ak,
uint8_t * ck,
uint8_t * ik,
uint8_t * kasme_exp)
{
uint8_t kasme[32];
derive_kasme (ck, ik, sn_id, sqn, ak, kasme);
if (compare_buffer (kasme, 32, kasme_exp, 32) != 0) {
fail ("Fail: derive_kasme\n");
}
}
