mirror of https://github.com/PentHertz/srsLTE.git
nas: add comment as to why attach request is only integrity protected
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@ -1762,6 +1762,8 @@ void nas::gen_attach_request(srslte::unique_byte_buffer_t& msg)
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ctxt.guti.mnc,
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ctxt.guti.mnc,
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ctxt.guti.mme_group_id,
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ctxt.guti.mme_group_id,
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ctxt.guti.mme_code);
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ctxt.guti.mme_code);
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// According to Sec 4.4.5, the attach request is always unciphered, even if a context exists
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liblte_mme_pack_attach_request_msg(
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liblte_mme_pack_attach_request_msg(
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&attach_req, LIBLTE_MME_SECURITY_HDR_TYPE_INTEGRITY, ctxt.tx_count, (LIBLTE_BYTE_MSG_STRUCT*)msg.get());
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&attach_req, LIBLTE_MME_SECURITY_HDR_TYPE_INTEGRITY, ctxt.tx_count, (LIBLTE_BYTE_MSG_STRUCT*)msg.get());
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