A.1 KDF interface and input parameter construction

33.5033GPPRelease 17Security Aspects of Proximity based Services (ProSe) in the 5G System (5GS)TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

A.1.1 General

All key derivations for 5G ProSe shall be performed using the Key Derivation Function (KDF) specified in clause B.2.2 of TS 33.220 [8].

This clause specifies how to construct the input string, S, and the input key, KEY, for each distinct use of the KDF. Note that "KEY" is denoted "Key" in TS 33.220 [8].

A.1.2 FC value allocations

The FC number space used is controlled by TS 33.220 [8], FC values allocated for the present document are: 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B.