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Content for  TS 33.536  Word version:  16.0.0

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5  Security for V2X over NR based PC5 reference point

5.1  General

This clause contains the security and privacy requirements and specifies procedures that can achieve the requirements for V2X over NR based PC5 reference point except those for PC5 over E-UTRA which are given in TS 33.185.

5.2  Common security

5.2.1  General

This clause describes the security requirements and the procedures that are commonly applied for the all kinds of communication modes, i.e. unicast mode, groupcast mode and broadcast mode, which the NR based PC5 reference point supports.

5.2.2  Requirements

5.2.2.1  Requirements for Cross-RAT control authorization indication

The 5G System shall provide means to manage the cross-RAT PC5 control authorization.

5.2.3  Procedures

5.2.3.1  Cross-RAT PC5 control authorization indication

The procedures for the cross-RAT PC5 control authorization indication are specified in TS 23.287 clause 6.5.

5.3  Security for unicast modeWord‑p. 8

5.3.1  General

This clause describes the security requirements and the procedures that can be specifically applied for the NR based PC5 unicast mode.

5.3.2  Requirements

5.3.2.1  Requirements for securing the PC5 unicast link

The initiating UE shall establish a different security context for each receiving UE during the PC5 unicast link establishment if the security is activated.
PC5 unicast link security establishment between the initiating UE and each receiving UE shall be protected from man-in-the-middle attacks.
The system shall support confidentiality protection, integrity protection and replay protection of the user plane data of PC5 unicast.
The system shall support confidentiality protection, integrity protection and replay protection of signalling for PC5 unicast link.
The system shall support means of configuring the signalling and user plane security policies to UEs for a particular PC5 unicast link.
Signalling plane protection of the PC5 unicast link for a V2X service shall align with the PC5 signalling security policies of the communicating UEs.
User plane protection of the PC5 unicast link for a V2X service shall align with the PC5 user plane security policies of the communicating UEs.
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5.3.2.2  Identity privacy requirements for the PC5 unicast link

The 5G System should provide means for mitigating trackability attacks on a UE during PC5 unicast communications.
The 5G System should provide means for mitigating link ability attacks on a UE during PC5 unicast communications.


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