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/*
* Copyright (c) 2015, EURECOM (www.eurecom.fr)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "ProtocolDiscriminator.h"
#include "SecurityHeaderType.h"
#include "MessageType.h"
#include "NasSecurityAlgorithms.h"
#include "NasKeySetIdentifier.h"
#include "UeSecurityCapability.h"
#include "ImeisvRequest.h"
#include "Nonce.h"
#ifndef NAS_SECURITY_MODE_COMMAND_H_
#define NAS_SECURITY_MODE_COMMAND_H_
/* Minimum length macro. Formed by minimum length of each mandatory field */
#define SECURITY_MODE_COMMAND_MINIMUM_LENGTH ( \
NAS_SECURITY_ALGORITHMS_MINIMUM_LENGTH + \
NAS_KEY_SET_IDENTIFIER_MINIMUM_LENGTH + \
UE_SECURITY_CAPABILITY_MINIMUM_LENGTH )
/* Maximum length macro. Formed by maximum length of each field */
#define SECURITY_MODE_COMMAND_MAXIMUM_LENGTH ( \
NAS_SECURITY_ALGORITHMS_MAXIMUM_LENGTH + \
NAS_KEY_SET_IDENTIFIER_MAXIMUM_LENGTH + \
UE_SECURITY_CAPABILITY_MAXIMUM_LENGTH + \
IMEISV_REQUEST_MAXIMUM_LENGTH + \
NONCE_MAXIMUM_LENGTH + \
NONCE_MAXIMUM_LENGTH )
/* If an optional value is present and should be encoded, the corresponding
* Bit mask should be set to 1.
*/
# define SECURITY_MODE_COMMAND_IMEISV_REQUEST_PRESENT (1<<0)
# define SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_PRESENT (1<<1)
# define SECURITY_MODE_COMMAND_NONCEMME_PRESENT (1<<2)
typedef enum security_mode_command_iei_tag {
SECURITY_MODE_COMMAND_IMEISV_REQUEST_IEI = 0xC0, /* 0xC0 = 192 */
SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_IEI = 0x55, /* 0x55 = 85 */
SECURITY_MODE_COMMAND_NONCEMME_IEI = 0x56, /* 0x56 = 86 */
} security_mode_command_iei;
/*
* Message name: Security mode command
* Description: This message is sent by the network to the UE to establish NAS signalling security. See table 8.2.20.1.
* Significance: dual
* Direction: network to UE
*/
typedef struct security_mode_command_msg_tag {
/* Mandatory fields */
ProtocolDiscriminator protocoldiscriminator:4;
SecurityHeaderType securityheadertype:4;
MessageType messagetype;
NasSecurityAlgorithms selectednassecurityalgorithms;
NasKeySetIdentifier naskeysetidentifier;
UeSecurityCapability replayeduesecuritycapabilities;
/* Optional fields */
uint32_t presencemask;
ImeisvRequest imeisvrequest;
Nonce replayednonceue;
Nonce noncemme;
} security_mode_command_msg;
int decode_security_mode_command(security_mode_command_msg *securitymodecommand, uint8_t *buffer, uint32_t len);
int encode_security_mode_command(security_mode_command_msg *securitymodecommand, uint8_t *buffer, uint32_t len);
#endif /* ! defined(NAS_SECURITY_MODE_COMMAND_H_) */