forked from acouzens/open5gs
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef NAS_SECURITY_H
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#define NAS_SECURITY_H
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#include "ogs-crypt.h"
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#include "mme-context.h"
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#include "snow-3g.h"
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#include "zuc.h"
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#define NAS_SECURITY_BEARER 0
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#define NAS_SECURITY_DOWNLINK_DIRECTION 1
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#define NAS_SECURITY_UPLINK_DIRECTION 0
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#define NAS_SECURITY_MAC_SIZE 4
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _nas_security_header_type_t {
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union {
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struct {
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ED5(uint8_t integrity_protected:1;,
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uint8_t ciphered:1;,
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uint8_t new_security_context:1;,
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uint8_t service_request:1;,
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uint8_t reserved:4;)
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};
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uint8_t type;
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};
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} __attribute__ ((packed)) nas_security_header_type_t;
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int nas_security_encode(
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ogs_pkbuf_t **pkbuf, mme_ue_t *mme_ue, nas_message_t *message);
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int nas_security_decode(mme_ue_t *mme_ue,
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nas_security_header_type_t security_header_type, ogs_pkbuf_t *pkbuf);
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void nas_mac_calculate(uint8_t algorithm_identity,
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uint8_t *knas_int, uint32_t count, uint8_t bearer,
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uint8_t direction, ogs_pkbuf_t *pkbuf, uint8_t *mac);
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void nas_encrypt(uint8_t algorithm_identity,
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uint8_t *knas_enc, uint32_t count, uint8_t bearer,
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uint8_t direction, ogs_pkbuf_t *pkbuf);
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#ifdef __cplusplus
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}
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#endif
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#endif /* NAS_SECURITY_H */
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