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/* GSM/GPRS/3G authentication core infrastructure */
/* (C) 2014 by Sylvain Munaut <tnt@246tNt.com>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <osmocom/crypt/auth.h>
static int xor_gen_vec(struct osmo_auth_vector *vec,
struct osmo_sub_auth_data *aud,
const uint8_t *_rand)
{
int i;
for (i=0; i<4; i++)
vec->sres[i] = _rand[i] ^ aud->u.gsm.ki[i];
for (i=0; i<8; i++)
vec->kc[i] = _rand[i+4] ^ aud->u.gsm.ki[i+4];
vec->auth_types = OSMO_AUTH_TYPE_GSM;
return 0;
}
static struct osmo_auth_impl xor_alg = {
.algo = OSMO_AUTH_ALG_XOR,
.name = "XOR (libosmogsm built-in)",
.priority = 1000,
.gen_vec = &xor_gen_vec,
};
static __attribute__((constructor)) void on_dso_load_xor(void)
{
osmo_auth_register(&xor_alg);
}
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