name: STF
full_form: Security Terminating Function
context: Figure 7.15.2-1 shows the general LI architecture where an IRI-POI in the KSF provides the xIRIs that include key management related information such as the decryption keys to the MDF2 over the LI_X2 interface. The STF can provide xIRI and xCC for the target's communication traffic, as described in more detail below. Figure 7.15.2-1 shows the case where STF is assumed to provide services based on 5G-native identifier, e.g. SUPI, enabling the STF to be provisioned over LI_X1. NOTE: If the STF is located outside the PLMN (not shown), the LI_X2 from IRI-POI in KSF can be used to provide IRI with key management information such as decryption keys via MDF2. Figure 7.15.2-1: General architecture, STF using 5G native identifiers. If the STF instead provides services based on some other user identifier space, the STF POIs are assumed to be triggered by IRI-TF and CC-TF in the KSF, as shown in figure 7.15.2-2. The triggering is based on the KSF detecting requests from the STF for cryptographic
description: The Security Terminating Function (STF) is a network component responsible for providing security-related services, such as decryption keys and key management information, to support lawful interception (LI) in the 5G core network. It interacts with other network functions, like the Key Storage Function (KSF) and the Mediation Function (MDF2), to facilitate secure communication.
explanation: The text describes STF as a component within the 5G core network that performs specific security-related tasks and interacts with other network functions. This clearly indicates that STF is a Network Function.
section_title: 7.15.2	Architecture
biotag_Context: O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Network,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,B-Technology,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O