name: DRF
full_form: Discovery and Registration Function
context: Data Consumer and the Data Source. The DCCF deletes the old key pairs and binds the new key pair to the involved NFs of the subscription ID. 3. The DCCF sends a Key Refresh Request to all Data Consumers and the Data Source including the subscription ID and the new keys KE and KI. In case the DCCF would like to store data in the Data Repository Function (DRF), then the DCCF adds the DRF as a data consumer for a specific subscription ID. The DRF then can decrypt the encrypted data and store it unencrypted in the DRF (tamperproof) memory. Once a data consumer would like to read historic data of a specific subscription ID from the DRF, then it creates a corresponding subscription ID and the DCCF will add the DRF as a data source. With those scenarios, the DRF will always be able to store the data of producers and to provide them to consumers, because the DRF will always have the corresponding keys KE and KI to encrypt/decrypt the data.
description: The Discovery and Registration Function (DRF) is a network component responsible for storing and providing access to data in the 5G core network. It acts as a repository for encrypted data, allowing authorized entities to store and retrieve data using specific subscription IDs.
explanation: The context explicitly describes the DRF's role in handling data storage and retrieval within the network, interacting with other Network Functions like the DCCF, and managing encryption keys. This behavior aligns with the characteristics of a Network Function.
section_title: 6.5.2.1	DCCF initiated key refresh procedure
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