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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface 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 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#define EIA0_ALG_ID 0x00
#define EIA1_128_ALG_ID 0x01
#define EIA2_128_ALG_ID 0x02
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#define EEA0_ALG_ID 0x00
#define EEA1_128_ALG_ID 0x01
#define EEA2_128_ALG_ID 0x02
#define SECU_DIRECTION_UPLINK 0
#define SECU_DIRECTION_DOWNLINK 1
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void kdf(const uint8_t *s, const uint32_t s_length, const uint8_t *key,
const uint32_t key_length, uint8_t **out, uint32_t out_length);
int derive_keNB(const uint8_t kasme[32], const uint32_t nas_count, uint8_t **keNB);
int derive_key_nas(algorithm_type_dist_t nas_alg_type, uint8_t nas_enc_alg_id,
const uint8_t kasme[32], uint8_t **knas);
#define derive_key_nas_enc(aLGiD, kASME, kNAS) \
derive_key_nas(NAS_ENC_ALG, aLGiD, kASME, kNAS)
#define derive_key_nas_int(aLGiD, kASME, kNAS) \
derive_key_nas(NAS_INT_ALG, aLGiD, kASME, kNAS)
#define derive_key_rrc_enc(aLGiD, kASME, kNAS) \
derive_key_nas(RRC_ENC_ALG, aLGiD, kASME, kNAS)
#define derive_key_rrc_int(aLGiD, kASME, kNAS) \
derive_key_nas(RRC_INT_ALG, aLGiD, kASME, kNAS)
#define derive_key_up_enc(aLGiD, kASME, kNAS) \
derive_key_nas(UP_ENC_ALG, aLGiD, kASME, kNAS)
#define derive_key_up_int(aLGiD, kASME, kNAS) \
derive_key_nas(UP_INT_ALG, aLGiD, kASME, kNAS)
#define SECU_DIRECTION_UPLINK 0
#define SECU_DIRECTION_DOWNLINK 1
typedef struct {
uint8_t *key;
uint32_t key_length;
uint32_t count;
uint8_t bearer;
uint8_t direction;
uint8_t *message;
/* length in bits */
uint32_t blength;
} nas_stream_cipher_t;
int nas_stream_encrypt_eea1(nas_stream_cipher_t *stream_cipher, uint8_t **out);
int nas_stream_encrypt_eia1(nas_stream_cipher_t *stream_cipher, uint8_t out[4]);