94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "ProtocolDiscriminator.h"
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#include "SecurityHeaderType.h"
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#include "MessageType.h"
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#include "NasSecurityAlgorithms.h"
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#include "NasKeySetIdentifier.h"
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#include "UeSecurityCapability.h"
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#include "ImeisvRequest.h"
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#include "Nonce.h"
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#ifndef NAS_SECURITY_MODE_COMMAND_H_
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#define NAS_SECURITY_MODE_COMMAND_H_
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/* Minimum length macro. Formed by minimum length of each mandatory field */
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#define SECURITY_MODE_COMMAND_MINIMUM_LENGTH ( \
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NAS_SECURITY_ALGORITHMS_MINIMUM_LENGTH + \
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NAS_KEY_SET_IDENTIFIER_MINIMUM_LENGTH + \
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UE_SECURITY_CAPABILITY_MINIMUM_LENGTH )
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/* Maximum length macro. Formed by maximum length of each field */
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#define SECURITY_MODE_COMMAND_MAXIMUM_LENGTH ( \
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NAS_SECURITY_ALGORITHMS_MAXIMUM_LENGTH + \
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NAS_KEY_SET_IDENTIFIER_MAXIMUM_LENGTH + \
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UE_SECURITY_CAPABILITY_MAXIMUM_LENGTH + \
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IMEISV_REQUEST_MAXIMUM_LENGTH + \
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NONCE_MAXIMUM_LENGTH + \
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NONCE_MAXIMUM_LENGTH )
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/* If an optional value is present and should be encoded, the corresponding
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* Bit mask should be set to 1.
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*/
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# define SECURITY_MODE_COMMAND_IMEISV_REQUEST_PRESENT (1<<0)
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# define SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_PRESENT (1<<1)
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# define SECURITY_MODE_COMMAND_NONCEMME_PRESENT (1<<2)
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typedef enum security_mode_command_iei_tag {
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SECURITY_MODE_COMMAND_IMEISV_REQUEST_IEI = 0xC0, /* 0xC0 = 192 */
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SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_IEI = 0x55, /* 0x55 = 85 */
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SECURITY_MODE_COMMAND_NONCEMME_IEI = 0x56, /* 0x56 = 86 */
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} security_mode_command_iei;
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/*
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* Message name: Security mode command
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* Description: This message is sent by the network to the UE to establish NAS signalling security. See table 8.2.20.1.
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* Significance: dual
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* Direction: network to UE
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*/
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typedef struct security_mode_command_msg_tag {
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/* Mandatory fields */
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ProtocolDiscriminator protocoldiscriminator:4;
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SecurityHeaderType securityheadertype:4;
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MessageType messagetype;
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NasSecurityAlgorithms selectednassecurityalgorithms;
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NasKeySetIdentifier naskeysetidentifier;
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UeSecurityCapability replayeduesecuritycapabilities;
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/* Optional fields */
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uint32_t presencemask;
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ImeisvRequest imeisvrequest;
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Nonce replayednonceue;
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Nonce noncemme;
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} security_mode_command_msg;
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int decode_security_mode_command(security_mode_command_msg *securitymodecommand, uint8_t *buffer, uint32_t len);
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int encode_security_mode_command(security_mode_command_msg *securitymodecommand, uint8_t *buffer, uint32_t len);
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#endif /* ! defined(NAS_SECURITY_MODE_COMMAND_H_) */
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