name: SIDF
full_form: Subscription Identifier De-concealing Function
context: It is assumed that the UE can be preconfigured with a pseudonym and that the SIDF is preconfigured with a map from pseudonyms to SUPIs. If the UE is preconfigured with a pseudonym and the UE is required to calculate a SUCI with other than the null encryption scheme, for example for an initial registration procedure, then the UE calculates the SUCI using the pseudonym and includes the corresponding new scheme identifier to indicate that SUCI was calculated using a pseudonym. If the SIDF receives a SUCI including a scheme identifier signalling the use of a pseudonym, then after decryption of the SUCI, the SIDF uses the preconfigured map to recover the corresponding SUPI. If the included scheme identifier does not signal the use of pseudonym, then the SIDF obtains the SUPI directly after decryption. In both cases, normal network operations can continue using the SUPI. The need of a preconfigured map on the network side depends on how the pseudonyms are generated. For methods that require
description: The Subscription Identifier De-concealing Function (SIDF) is responsible for managing the mapping between pseudonyms and SUPIs, enabling the recovery of SUPIs from SUCIs calculated using pseudonyms. It plays a crucial role in subscription identifier management within the network.
explanation: SIDF is classified as a Network Function based on its role in handling pseudonym-SUPI mappings and facilitating the recovery of SUPIs for normal network operations, as described in the context from 3GPP TS 33.870.
section_title: 6.3.2.2	Procedure
biotag_Context: O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,B-Network Function,O,O,B-Parameter,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,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,B-Parameter,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
biotag_Description: O,B-Network Function,I-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,O,O