name: KSF
full_form: Key Server Function
context: 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 keys associated with a target UE. When the key management service of the KSF is based on target specific key identifiers (KID) known both at KSF and STF, such KID can serve as basis for mapping STF-identifiers to 5G-native identifiers at the KSF. The IRI-TF or CC-TF present in the KSF send the triggers to the IRI-POI or CC-POI present in the STF to indicate that the communication traffic is that of a target. The IRI-POI and CC-POI are then enabled for delivery of xIRI and the xCC with communication traffic of the target in a decrypted form as laid out above. Figure 7.15.2-2: General architecture, STF not relying on 5G native identifiers. The IRI-POI present in the KSF is provisioned by the LIPF over LI_X1 and is responsible for providing key management related information in the form of xIRI.
description: The Key Server Function (KSF) is a network component responsible for managing cryptographic keys associated with target user equipment (UE). It detects requests from the Security Transparency Function (STF) for these keys and triggers the STF to deliver decrypted communication traffic. The KSF also provisions key management related information in the form of xIRI.
explanation: The context explicitly describes the role of the Key Server Function (KSF) as a network component that manages cryptographic keys, interacts with other network functions like the Security Transparency Function (STF), and provides key management related information. This description aligns with the definition of a Network Function.
section_title: 7.15.2	Architecture
biotag_Context: 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,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,B-Network Function,O,O,O,B-Parameter,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,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,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,B-Technology,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,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,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O