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68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
3 years ago
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSUE_NAS_BASE_H
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#define SRSUE_NAS_BASE_H
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#include "srsran/asn1/liblte_mme.h"
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#include "srsran/common/buffer_pool.h"
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#include "srsran/common/common.h"
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#include "srsran/common/nas_pcap.h"
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#include "srsran/common/security.h"
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#include "srsran/common/string_helpers.h"
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#include "srsran/config.h"
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using srsran::byte_buffer_t;
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namespace srsue {
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class nas_base
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{
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public:
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nas_base(const std::string& type_);
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// PCAP
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void start_pcap(srsran::nas_pcap* pcap_) { pcap = pcap_; }
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protected:
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srslog::basic_logger& logger;
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// PCAP
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srsran::nas_pcap* pcap = nullptr;
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// Security context
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struct nas_sec_ctxt {
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uint8_t ksi;
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uint8_t k_asme[32];
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uint32_t tx_count;
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uint32_t rx_count;
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uint32_t k_enb_count;
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srsran::CIPHERING_ALGORITHM_ID_ENUM cipher_algo;
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srsran::INTEGRITY_ALGORITHM_ID_ENUM integ_algo;
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LIBLTE_MME_EPS_MOBILE_ID_GUTI_STRUCT guti;
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};
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nas_sec_ctxt ctxt = {};
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uint8_t k_nas_enc[32] = {};
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uint8_t k_nas_int[32] = {};
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int parse_security_algorithm_list(std::string algorithm_string, bool* algorithm_caps);
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// Security
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void
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integrity_generate(uint8_t* key_128, uint32_t count, uint8_t direction, uint8_t* msg, uint32_t msg_len, uint8_t* mac);
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bool integrity_check(srsran::byte_buffer_t* pdu);
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void cipher_encrypt(srsran::byte_buffer_t* pdu);
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void cipher_decrypt(srsran::byte_buffer_t* pdu);
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};
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} // namespace srsue
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#endif
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