W.3 Security mechanisms for xMB-C/MB2-C and xMB-U/MB2-U interface
33.5013GPPRelease 18Security architecture and procedures for 5G SystemTS
The security aspects defined in clause 12 in present document is applicable for both MBSF and MBSTF. TLS based solution are reused to protect the interface xMB-C/MB2-C and xMB-U/MB2-U between AF and 5GC in MBS.